IP Addresses and Services Command Reference for Cisco NCS 5500 Series, Cisco NCS 540 Series, and Cisco NCS 560 Series Routers

cef adjacency route override rib

To enable the CEF prefer Routing Information Base (RIB) prefixes over Adjacency Information Base (AIB) prefixes in the Global configuration mode. To enable the CEF prefer AIB prefixes over RIB prefixes, use the no form of this command.

cef adjacency route override rib

no cef adjacency route override rib

Syntax Description


route	Enables adjacency route configuration .
override	Sets override options for the adjacency routes.
rib	Sets options for adjacency routes to override the RIB routes.

Command Default

By default, CEF prefers RIB prefixes over AIB prefixes.

Command Modes

Global configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

CEF may prefer the L2 adjacency for forwarding over the RIB (routing) entry under the following conditions:

When there is no local ARP entry (yet).

ARP learning may result in the router creating a forwarding entry.
A forwarding entry of /32 (or /128 for IPv6) RIB routes are overridden when there is a covering connected or attached route.

If an interface has a larger subnet, and you want to redirect a /32 out of that subnet of a different interface via a static route.

This can be seen in scenarios of EVPN and or HSRP, or in bridge domains with a BVI and multiple EFP’s.

To deviate from the behavior of preferring a L2 adjacency for forwarding over a route entry, use the cef adjacency route override rib command.

Task ID


Task ID	Operation
cef	read, write

Examples

The following example shows how to override the CEF adjacency route:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router# cef adjacency route override rib

cef load-balancing

To configure load-balancing parameters, use the cef load-balancing command in Global configuration mode. To enable the default CEF load-balancing behavior, use the no form of this command.

cef load-balancing { mode hierarchical { ucmp group-size | ecmp min-path } <range> | recursive oor mode dampening-and-dlb [ dampening resource-threshold <percentage> | dlb resource-threshold <percentage> | max-duration <secs> ] }

Syntax Description


mode	Specifies the mode as hierarchical.
hierarchical	Specifies the configuration for multi-level load balancing in CEF.
ucmp	Specifies the ucmp parameters for CEF load-balancing configuration.
group-size	Enables ucmp group size for hierarchical load balancing (HLB).
ecmp	Specifies the ecmp parameters for CEF load-balancing configuration.
min-path	Specifies the minimum number of paths required for hierarchical ecmp load balancing.
`range`	Specifies the range of values for configuring the group size for ucmp and minimum paths for ecmp in hierarchical load balancing. The routers supports the values ranging from 1 to 128.
recursive	Enables recursive route configuration.
oor	Enables oor configuration.
dlb	Specifies the dynamic load balancing (DLB) parameter in CEF load balancing.
dampening-and-dlb	Enables dampening and dlb mode for oor handling.
dampening	Configure dampening mode parameters.
resource-threshold	Specifies the resource threshold percentage to enable dynamic load-balancing mode.
`percentage`	Specifies the threshold percentage for enabling FIB dampening and DLB features.
max-duration	Specifies the maximum duration time configuration for dampening and dynamic load balancing in CEF load balancing.
`secs`	Specifies the maximum duration time, in seconds, for configuring dampening and dynamic load balancing in CEF load balancing. You can configure the time range from 1 to 600 seconds.

Command Default

None

Command Modes

Global configuration

Command History


Release	Modification
Release 24.2.1	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The cef load-balancing mode hierarchical ecmp min-paths command is a replacement for the cef hierarchical-load-balancing ecmp min-paths command.

If the number of paths exceeds 128, HLB is automatically applied.

The cef load-balancing mode hierarchical ucmp group-size command is a replacement for the cef hierarchical-load-balancing ucmp group-size command.

Task ID


Task ID	Operation
cef	read, write

Examples

The following example shows how to enable FIB dampening and DLB features with default values of dampening threshold percentage and max switchover duration and dlb threhold percentage as (70%, 300 sec, 90%)

Examples

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router# cef load-balancing recursive oor mode dampening-and-dlb

Examples

The following example shows how to enable FIB dampening and DLB features with default values of dampening threshold percetange and max switchover duration and dlb threhold percentage as (70%, 90%).

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router# cef load-balancing recursive oor mode dampening-and-dlb max-duration 600

Examples

The following example shows how to configure dampening and dynamic load balancing with specified resource-threshold for dampening and dlb each and maximum duration for switchover time.

Note

The dampening threshold value should be lower than the DLB threshold.

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router# cef load-balancing recursive oor mode dampening-and-dlb dampening resource-threshold 99 max-duration 600 dlb resource-threshold 99

Examples

The following example shows how to configure the group size for ucmp in hierarchical load balancing

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router# cef load-balancing mode  hierarchical ucmp group-size 128

Examples

The following example shows how to configure the minimum paths for hierarchical ecmp load balancing.

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router# cef load-balancing mode  hierarchical ecmp min-path 128

clear cef ipv4 drops

To clear Cisco Express Forwarding (CEF) IPv4 packet drop counters, use the clear cef ipv4 drops command in XR EXEC mode.

clear cef ipv4 drops location node-id

Syntax Description


location `node-id`	Clears IPv4 packet drop counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command will clear IPv4 CEF drop counters only for the node on which the command is issued.

Task ID


Task ID	Operations
basic-services	read, write
cef	read, write

Examples

The following example displays sample output for the IPv4 Cisco Express Forwarding (CEF) table packet drop counters, and clears IPv4 CEF drop counters for location 0/RP0/CPU0:



RP/0/RP0/CPU0:router# show cef ipv4 drops

CEF Drop Statistics
Node: 0/RP0/CPU0
  Unresolved drops     packets :               0
  Unsupported drops    packets :               0
  Null0 drops          packets :               0
  No route drops       packets :               0
  No Adjacency drops   packets :               0
  Checksum error drops packets :               0
  RPF drops            packets :               0
  RPF suppressed drops packets :               0
  RP destined drops    packets :               0
  Discard drops        packets :               0
  GRE lookup drops     packets :               0
  GRE processing drops packets :               0
  LISP punt drops      packets :               0
  LISP encap err drops packets :               0
  LISP decap err drops packets :               0

Node: 0/RP1/CPU0
  Unresolved drops     packets :               0
  Unsupported drops    packets :               0
  Null0 drops          packets :               0
  No route drops       packets :               0
  No Adjacency drops   packets :               0
  Checksum error drops packets :               0
  RPF drops            packets :               0
  RPF suppressed drops packets :               0
  RP destined drops    packets :               0
  Discard drops        packets :               0
  GRE lookup drops     packets :               0
  GRE processing drops packets :               0
  LISP punt drops      packets :               0
  LISP encap err drops packets :               0
  LISP decap err drops packets :               0

RP/0/RP0/CPU0:router# clear cef ipv4 drops location 0/RP0/CPU0

  Node: 0/RP0/CPU0
  Clearing CEF Drop Statistics

clear cef ipv4 exceptions

To clear IPv4 Cisco Express Forwarding (CEF) exception packet counters, use the clear cef ipv4 exceptions command in XR EXEC mode mode.

clear cef ipv4 exceptions location node-id

Syntax Description


location `node-id`	Clears IPv4 CEF exception packet counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command will clear IPv4 CEF exception packet counters for all nodes.

Task ID


Task ID	Operations
basic-services	read, write
cef	read, write

Examples

The following example displays sample output for the IPv4 Cisco Express Forwarding (CEF) exception packet counters, and clear s IPv4 CEF exception packets node 0/RP0/CPU0:



RP/0/RP0/CPU0:router# show cef ipv4 exceptions

CEF Exception Statistics
Node: 0/RP0/CPU0
  Slow encap  packets :               0
  Unsupported packets :               0
  Redirect    packets :               0
  Receive     packets :               0
  Broadcast   packets :               0
  IP options  packets :               0
  TTL expired packets :               0
  Fragmented  packets :               0
Node: 0/RP1/CPU0
  Slow encap  packets :               3
  Unsupported packets :               0
  Redirect    packets :               0
  Receive     packets :           12787
  Broadcast   packets :           74814
  IP options  packets :               0
  TTL expired packets :               0
  Fragmented  packets :               0

RP/0/RP0/CPU0:router# clear cef ipv4 exceptions location 0/RP0/CPU0 

Node: 0/RP0/CPU0
Clearing CEF Exception Statistics

clear cef ipv6 drops

To clear Cisco Express Forwarding (CEF) IPv6 packet drop counters, use the clear cef ipv6 drop command in XR EXEC mode.

clear cef ipv6 drops location node-id

Syntax Description


location `node-id`	Clears IPv6 packet drop counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command clears IPv6 CEF drop counters for all nodes.

Task ID


Task ID	Operations
basic-services	read, write
cef	read, write

Examples

The following example displays sample output for the IPv6 Cisco Express Forwarding (CEF) table packet drop counters, and clears IPv6 CEF drop counters for location 0/RP0/CPU0:



RP/0/RP0/CPU0:router# show cef ipv6 drops

CEF Drop Statistics
Node: 0/RP0/CPU0
  Unresolved drops     packets :               0
  Unsupported drops    packets :               0
  Null0 drops          packets :               0
  No route drops       packets :               1
  No Adjacency drops   packets :               0
  Checksum error drops packets :               0
  RPF drops            packets :               0
  RPF suppressed drops packets :               0
  RP destined drops    packets :               0
  Discard drops        packets :               0
  GRE lookup drops     packets :               0
  GRE processing drops packets :               0
  LISP punt drops      packets :               0
  LISP encap err drops packets :               0
  LISP decap err drops packets :               0

Node: 0/RP1/CPU0
  Unresolved drops     packets :               0
  Unsupported drops    packets :               0
  Null0 drops          packets :               0
  No route drops       packets :               1
  No Adjacency drops   packets :               0
  Checksum error drops packets :               0
  RPF drops            packets :               0
  RPF suppressed drops packets :               0
  RP destined drops    packets :               0
  Discard drops        packets :               0
  GRE lookup drops     packets :               0
  GRE processing drops packets :               0
  LISP punt drops      packets :               0
  LISP encap err drops packets :               0
  LISP decap err drops packets :               0

RP/0/RP0/CPU0:router# clear cef ipv6 drop

Node: 0/RP0/CPU0
Clearing CEF Drop Statistics

clear cef ipv6 exceptions

To clear IPv6 Cisco Express Forwarding (CEF) exception packet counters, use the clear cef ipv6 exceptions command in XR EXEC mode .

clear cef ipv6 exceptions location node-id

Syntax Description


location `node-id`	Clears IPv6 CEF exception packet counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command clears IPv6 CEF exception packet counters for all nodes.

Task ID


Task ID	Operations
basic-services	read, write
cef	read, write

Examples

The following example displays sample output for the IPv6 Cisco Express Forwarding (CEF) exception packet counters, and clears the IPv6 CEF exception packets for location:



RP/0/RP0/CPU0:router# show cef ipv6 exceptions

CEF Exception Statistics
Node: 0/RP0/CPU0
  Slow encap  packets :               0
  Unsupported packets :               0
  Redirect    packets :               0
  Receive     packets :               1
  Broadcast   packets :               0
  IP options  packets :               0
  TTL expired packets :               0
  Fragmented  packets :               0

Node: 0/RP1/CPU0
  Slow encap  packets :               0
  Unsupported packets :               0
  Redirect    packets :               0
  Receive     packets :               7
  Broadcast   packets :               0
  IP options  packets :               0
  TTL expired packets :               0
  Fragmented  packets :               0

RP/0/RP0/CPU0:router# clear cef ipv6 exceptions location 0/RP0/CPU0

Node: 0/RP0/CPU0
Clearing CEF Exception Statistics

hw-module fib bgppa stats-mode

To enable the BGP policy accounting on the main interface or on the sub interface, run the hw-module fib bgppa stats-mode command with the main-intf or the sub-intf keywords respectively.

hw-module fib bgppa stats-mode {main-intf | sub-intf}

Syntax Description


bgppa	BGP policy accounting
stats-mode	Stats accounting mode
main-intf	Account the BGP policy accounting stats for the main interface.
sub-intf	Account the BGP policy accounting stats for the sub interface.

Command Default

None

Command Modes

Interface configuration

Command History


Release	Modification
Release 7.9.1	This command was introduced.

Usage Guidelines

The BGP policy accounting feature is applicable for the following address families:
- IPv4
- IPv6
After configuring the command, you must reload the router for the BGP policy accounting feature to take effect.

Task ID


Task ID	Operation
bgp	read, write

Examples

The following example shows the configuration of the main interface and the sub interface. You must reload the router after configuring the following commands to take effect.

For main interface:


Router# config
Router(config)# hw-module fib bgppa stats-mode main-intf

Router(config)# commit

For sub interface:


Router# config
Router(config)# hw-module fib bgppa stats-mode sub-intf
Router(config)# commit

hw-module profile load-balance algorithm

To modify the hashing algorithm that is used for ECMP and bundle member selection, use the hw-module profile load-balance algorithm command in XR Config mode.

hw-module profile load-balance algorithm { L3-only | PPPoE | gtp | gtp-mpls | inner-l2-field | ip-tunnel | layer2 | mpls-lsr-ler | mpls-lsr-ler-optimized | mpls-safe-speculative-parsing }

Syntax Description


ip-tunnel	Allows the hashing algorithm to use the outer IPv4 GRE header even while doing an IP tunnel decapsulation.
layer2	Allows the hashing algorithm to use the inner IP header information while doing layer 2 forwarding with inner payload as MPLS.
gtp	Allows hashing based on the tunnel id in GTP-U packets.
gtp-mpls	Allows hashing based on the tunnel id in GTP-U packets intead of Layer 4 packets when underlay network is MPLS.
mpls-safe-speculative-parsing	Allows hashing based on the first nibble of the MAC DA address.
pppoe	Allows hashing based on inner IPv4 or IPv6 headers for PPPoE packets. We recommend enabling this hashing on head and tail nodes.
L3-Only	Allows hashing for L3 header only. We recommend enabling this hashing when majority of traffic is fragmented.
mpls-lsr-ler	Allows hashing in Label Edge Router (LER) and Label Switched Routers (LSRs) with MPLS traffic. This profile is recommended to be used when the following traffic flows are prominent: IPv4 pop and lookup flows (EthoMPLS2/3oIPv4oL4) with L4 as TCP or UDP IPv6 pop and lookup flows (EthoMPLS2/3oIPv6oXX) with L4 as TCP or UDP
mpls-lsr-ler-optimized	Allows optimized hashing in LER and LSR with MPLS IPv6 traffic. This profile is recommended to be used when the following traffic flows are prominent: 4 Label IPv6 flows (EthoMPLS4/6oIPv6) IPv6 pop and lookup flows (EthoMPLS2/3oIPv6oXX) with L4 as non-TCP/UDP (for example, no next header, GRE)
inner-L2-field	Allows the hashing algorithm to use the inner ethernet fields of the source MAC and destination MAC addresses.

Command Default

No load-balancing profile is configured.

Command Modes

XR Config mode

Command History


Release	Modification
7.10.1	The mpls-lsr-ler-optimized keyword was introduced.
7.7.2	The inner-l2-field keyword was introduced.
6.5.1	This command was modified.
6.3.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Without control-word, L2VPN traffic is considered to be IPv4 or IPv6 traffic depending on the presence of nibble 4 or nibble 6 in the payload after the last label in the traffic. The matching offset fields are considered for load-balancing hash calculation. This may cause hashing of a single flow to different links resulting in decrease of end user throughput.

Note

Only one of the load-balancing profiles should be enabled at a time. The last configured CLI takes precedence.
While adding or removing the hw-module profile load-balance algorithm mpls-lsr-ler and hw-module profile load-balance algorithm mpls-lsr-ler-optimized commands, there is no need to reload the router.
While adding or removing the hw-module profile load-balance algorithm ip-tunnel and hw-module profile load-balance algorithm PPPoE commands, you must reload the router.
The hw-module profile segment-routing srv6 is mutually exclusive with hw-module profile load-balance algorithm PPPoE and hw-module profile load-balance algorithm ip-tunnel commands.

Task ID


Task ID	Operation
bundle	read, write

Examples

This example shows how to configure the hw-module profile load-balance algorithm command to use the outer IPv4 GRE header for hashing even while doing an IP tunnel decapsulation.


RP/0/RP0/CPU0:Router(config)# hw-module profile load-balance algorithm ip-tunnel

This example shows how to configure the hw-module profile load-balance algorithm command to use the tunnel id in GTP-U packets for hashing.


RP/0/RP0/CPU0:Router(config)# hw-module profile load-balance algorithm gtp

This example shows how to configure the hw-module profile load-balance algorithm command to hash the L2VPN traffic to the right egress link.

RP/0/RP0/CPU0:Router(config)# hw-module profile load-balance algorithm mpls-safe-speculative-parsing

This example shows how to configure the hw-module profile load-balance algorithm command to hash the IPv6 traffic with four MPLS labels to ensure optimized load-balancing.

RP/0/RP0/CPU0:ios(config)#hw-module profile load-balance algorithm mpls-lsr-ler-optimized

pppoe payload

To enable load balancing based on PPPoE payload IPV4/IPV6 header when PPPoE header is on ETH, use the hw-module profile load-balance algorithm pppoe command in XR Config mode. To restore the default values, use the no form of this command.

hw-module profile load-balance algorithm pppoe [ ip-tunnel | layer2 | gtp | mpls-safe-speculative-parsing ]

Syntax Description


ip-tunnel	Allows the hashing algorithm to use the outer IPv4 GRE header even while doing an IP tunnel decapsulation.
layer2	Allows the hashing algorithm to use the inner IP header information while doing layer 2 forwarding with inner payload as MPLS.
gtp	Allows hashing based on the tunnel id in GTP-U packets.
mpls-safe-speculative-parsing	Allows hashing based on the first nibble of the MAC DA address.

Command Modes

XR Config mode

Command History


Release	Modification
Release 7.4.1	This command was introduced.

Usage Guidelines

Without control-word, L2VPN traffic is considered to be IPv4 or IPv6 traffic depending on the presence of nibble 4 or nibble 6 in the payload after the last label in the traffic. The matching offset fields are considered for load-balancing hash calculation. This may cause hashing of a single flow to different links resulting in decrease of end user throughput.

Task ID


Task ID	Operations
bundle	read, write

Examples

This example shows how to configure the hw-module profile load-balance algorithm command to use the outer IPv4 GRE header for hashing even while doing an IP tunnel decapsulation.

:

Router(config)#hw-module profile load-balance algorithm ip-tunnel
Fri Jul 23 08:44:28.724 UTC
reload of all chassis/all line cards is required only for PPPoE option configuration/removal
Router(config)#
Router(config)#
Router(config)#
Router(config)#commit
Fri Jul 23 08:44:36.701 UTC
Router(config)#Router(config)#no hw-module p
port-range profile
Router(config)#no hw-module profile load-balance algorithm ip-tunnel
Fri Jul 23 08:44:50.292 UTC
reload of all chassis/all line cards is required only for PPPoE option configuration/removal
Router(config)#commit
Fri Jul 23 08:44:53.504 UTC
Router(config)#

Examples

This example shows how to configure the hw-module profile load-balance algorithm command to use the tunnel id in GTP-U packets for hashing.

Router(config)#hw-module profile load-balance algorithm gtp
Fri Jul 23 08:45:00.823 UTC
reload of all chassis/all line cards is required only for PPPoE option configuration/removal
Router(config)#
Router(config)#commit
Fri Jul 23 08:45:03.651 UTC
Router(config)#
Router(config)#
Router(config)#no hw-module profile load-balance algorithm gtp
Fri Jul 23 08:45:14.485 UTC
reload of all chassis/all line cards is required only for PPPoE option configuration/removal
Router(config)#commit
Fri Jul 23 08:45:17.172 UTC

Examples

This example shows how to configure the hw-module profile load-balance algorithm command to hash the L2VPN traffic to the right egress link .

Router(config)#hw-module profile load-balance algorithm ?
L3-only L3 Header only Hash.
PPPoE PPPoE session based optimized hash. Reload is required for this option
gtp GTP optimized.
gtp-mpls GTP over MPLS optimized hash.
ip-tunnel IP tunnel optimized.
layer2 Layer 2 optimized.
mpls-safe-speculative-parsing MPLS safe Speculative parsing.Router(config)#

show adjacency

To display Cisco Express Forwarding (CEF) adjacency table information, use the show adjacency command in XR EXEC mode.

show adjacency [ipv4 [nexthop ipv4-address] | mpls | ipv6] [interface type interface-instance] [remote] [detail] [location node-id]

Syntax Description


ipv4	(Optional) Displays only IPv4 adjacencies.
nexthop `ipv4-address`	(Optional) Displays adjacencies that are destined to the specified IPv4 nexthop.
mpls	(Optional) Displays only MPLS adjacencies.
ipv6	(Optional) Displays only IPv6 adjacencies.
`interface-type`	(Optional) Interface type. For more information, use the question mark (?) online help function.
`interface-instance`	Either a physical interface instance or a virtual interface instance: Physical interface instance. Naming notation is rack/slot/module/port and a slash mark between values is required as part of the notation. rack: Chassis number of the rack. slot: Physical slot number of the line card. module: Module number. A physical layer interface module (PLIM) is always 0. port: Physical port number of the interface. Virtual interface instance. Number range varies depending on interface type. For more information about the syntax for the router, use the question mark (?) online help function.
remote	(Optional) Displays only remote adjacencies. A remote adjacency is an internal adjacency used to forward packets between line cards.
detail	(Optional) Displays detailed adjacency information, including Layer 2 information.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

This command is used to verify that an adjacency exists for a connected device, that the adjacency is valid, and that the MAC header rewrite string is correct.

If you do not specify a node with the location keyword and node-id argument, this command displays the CEF adjacency table for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from show adjacency command with the location keyword specified:


RP/0/RP0/CPU0:router# show adjacency location 0/RP1/CPU0

Interface      Address Version Refcount Protocol
Mg0/RP1/CPU0/0 1.73.57.180 49 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.181 55 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.250 14 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.91  48 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.92  60 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.52.5   21 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.52.52 17723 2( 0)     ipv4 
Mg0/RP1/CPU0/0 1.73.46.4   80 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.1   86 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.2   88 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.10  84 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.250 23 2( 0)       ipv4 
Te0/5/0/11/3   110.0.0.2    3 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.0.3    20 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.0.2     7 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.0.1    15 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.44.250  8 2( 0)       ipv4


RP/0/RP0/CPU0:router# show adjacency location 0/RP1/CPU0

Interface      Address Version Refcount Protocol
Mg0/RP1/CPU0/0 1.73.57.180 49 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.181 55 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.250 14 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.91  48 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.57.92  60 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.52.5   21 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.52.52 17723 2( 0)     ipv4 
Mg0/RP1/CPU0/0 1.73.46.4   80 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.1   86 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.2   88 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.10  84 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.46.250 23 2( 0)       ipv4 
Te0/5/0/11/3   110.0.0.2    3 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.0.3    20 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.0.2     7 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.0.1    15 2( 0)       ipv4 
Mg0/RP1/CPU0/0 1.73.44.250  8 2( 0)       ipv4

This table describes the significant fields shown in the display.

Table 1. show adjacency Command Field Descriptions
Field	Description
Interface	Outgoing interface associated with the adjacency.
Address	Address can represent one of these addresses: Next hop IPv4 or IPv6 address Point-to-Point address Information in parentheses indicates different types of adjacency.
Version	Version number of the adjacency. Updated whenever the adjacency is updated.
Refcount	Number of references to this adjacency.
Protocol	Protocol for which the adjacency is associated.
0f000800 and 000c86f33d330800453a21c10800	Layer 2 encapsulation string.
mtu	Value of the maximum transmission unit (MTU).
flags	Internal field.
packets	Number of packets going through the adjacency.
bytes	Number of bytes going through the adjacency.

show cef

To display information about packets forwarded by Cisco Express Forwarding (CEF), use the show cef command in XR EXEC mode.

show cef [prefix [mask] ] [hardware {egress} | detail] [location {node-id | all}]

Syntax Description


`prefix`	(Optional) Longest matching CEF entry for the specified IPv4 destination prefix.
mask	(Optional) Exact CEF entry for the specified IPv4 prefix and mask.
hardware	(Optional) Displays detailed information about hardware.
egress	Displays information from the egress packet switch exchange (PSE) file.
detail	(Optional) Displays full details.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.
all	(Optional) Displays all locations.

Command Default

When the prefix is not explicitly specified, this command displays all the IPv4 prefixes that are present in CEF. When not specified, the location defaults to the active Route Processor (RP) node.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output shows the load information flag from the show cef command for both hardware and ingress keywords.


Router# show cef 1.81.0.0/16 hardware ingress location 0/RP0/CPU0 

1.81.0.0/16, version 10, internal 0x1000001 0x0 (ptr 0x8d793370) [1], 0x0 (0x0), 0x0 (0x0)
Updated Nov 24 03:56:15.876 
local adjacency 1.73.0.1
Prefix Len 16, traffic index 0, precedence n/a, priority 3
via 1.73.0.1/32, 2 dependencies, recursive [flags 0x0]
path-idx 0 NHID 0x0 [0x8d7934f0 0x0]
next hop 1.73.0.1/32 via 1.73.0.1/32
RP/0/RP1/CPU0:ncs5508#show cef 1.81.0.0/16 hardware ingress loc 0/5/cpu0 
1.81.0.0/16, version 10, internal 0x1000001 0x0 (ptr 0x8853a698) [1], 0x0 (0x0), 0x0 (0x0)
Updated Nov 24 03:56:15.880
Prefix Len 16, traffic index 0, precedence n/a, priority 3
via 1.73.0.1/32, 2 dependencies, recursive [flags 0x0]
path-idx 0 NHID 0x0 [0x8853a4e8 0x0]
next hop 1.73.0.1/32 via 1.73.0.1/32



LEAF - HAL pd context : 
sub-type : IPV4, ecd_marked:0, has_collapsed_ldi:0
collapse_bwalk_required:0, ecdv2_marked:0
HW Walk:
LEAF:
Handle: 0x8893c7d8 type: 0 FEC handle: 0x887557a8

REC-SHLDI HAL PD context :
ecd_marked:0, collapse_bwalk_required:0, load_shared_lb:0

RSHLDI:
PI:0x0x883e8908 PD:0x0x883e8984 rev:0 p-rev:0 flag:0x1
FEC hdl: 0x887557a8 fec index: 0x2000101e(4126) num paths: 1
Path:0 fec index: 0x2000101e(4126) DSP:0x16033036

show cef bgp-attribute

To display Border Gateway Protocol (BGP) attributes for Cisco Express Forwarding (CEF), use the show cef bgp-attribute command in XR EXEC mode.

show cef bgp-attribute [attribute-id index-id] [local-attribute-id index-id] [location node-id]

Syntax Description


attribute-id index-id	(Optional) Displays FIB attribute index.
local-attribute-id index-id	(Optional) Displays FIB local attribute index.
location `node-id`	(Optional) Displays BGP information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

The default location is active RP.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

This command has no keywords or arguments.

Task ID


Task ID	Operations
cef	read

Examples

The following example shows how to use the show cef bgp-attribute command:


RP/0/RP0/CPU0:router# show cef bgp-attribute

Total number of entries: 75742
BGP Attribute ID: 0x2058a, Local Attribute ID: 0x1
    Origin AS:    195, Next Hop AS:        195
BGP Attribute ID: 0x20583, Local Attribute ID: 0x2
    Origin AS:    22, Next Hop AS:        22
BGP Attribute ID: 0x20582, Local Attribute ID: 0x3
    Origin AS:    21, Next Hop AS:        21
BGP Attribute ID: 0x20585, Local Attribute ID: 0x4
    Origin AS:    28, Next Hop AS:        28
BGP Attribute ID: 0x20584, Local Attribute ID: 0x5
    Origin AS:    27, Next Hop AS:        27
BGP Attribute ID: 0x2057f, Local Attribute ID: 0x6
    Origin AS:    86, Next Hop AS:        86
BGP Attribute ID: 0x2058b, Local Attribute ID: 0x7
    Origin AS:    196, Next Hop AS:        196
BGP Attribute ID: 0x20589, Local Attribute ID: 0x8
    Origin AS:    194, Next Hop AS:        194

This table describes the significant fields shown in the display.

Table 2. show cef bgp-attribute Command Field Descriptions
Field	Description
BGP Attribute ID	Displays the id assigned by BGP.
Local Attribute ID	Displays the id assigned by FIB.
Origin AS	Displays the origin AS of the prefix that carries this attribute id.
Next Hop AS	Displays the AS that contains the BGP nexthop for this prefix.

show cef summary

To display summary information for the Cisco Express Forwarding (CEF) table, use the show cef summary command in XR EXEC mode.

show cef summary [location {node-id | all}]

Syntax Description


location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.
all	(Optional) Displays all locations.

Command Default

The show cef summary command assumes the IPv4 CEF table and the active RP node as the location.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef summary command.


RP/0/RP0/CPU0:router# show cef summary location 0/RP0/CPU0

Router ID is 10.1.1.1

IP CEF with switching (Table Version 0) for node0_1_CPU0

  Load balancing: L3
  Tableid 0xe0000000, Vrfid 0x60000000, Vrid 0x20000000, Flags 0x301
  Vrfname default, Refcount 318
  170 routes, 0 reresolve, 0 unresolved (0 old, 0 new), 12240 bytes
  183 load sharing elements, 57292 bytes, 184 references
  19 shared load sharing elements, 7036 bytes
  164 exclusive load sharing elements, 50256 bytes
  0 CEF route update drops, 10 revisions of existing leaves
  Resolution Timer: 15s
  0 prefixes modified in place
  0 deleted stale prefixes
  21 prefixes with label imposition, 60 prefixes with label information
Adjacency Table has 49 adjacencies
  25 incomplete adjacencies

This table describes the significant fields shown in the display.

Table 3. show cef summary Command Field Descriptions
Field	Description
Load balancing	Current load-balancing mode. The default value is L3.
Table Version	Version of the CEF table.
tableid	Table identification number.
vrfname	VRF name.
flags	Option value for the table
routes	Total number of routes.
reresolve	Total number of routes being reresolved.
unresolved (x old, x new)	Number of routes not yet resolved.
load sharing elements	Total number of internal load-sharing data structures.
bytes	Total memory used by internal load sharing data structures.
references	Total reference count of all internal load sharing data structures.
CEF resets	Number of CEF table resets.
revisions of existing leaves	Number of updates to existing prefixes.
Exponential (currently xs, peak xs)	Currently not used.
prefixes modified in place	Prefixes modified in place.
Adjacency Table has x adjacencies	Total number of adjacencies.
x incomplete adjacency	Total number of incomplete adjacencies.

show cef ipv4

To display the IPv4 Cisco Express Forwarding (CEF) table, use the show cef ipv4 command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 [prefix [mask] | interface-type interface-instance] [detail] [location node-id]

Syntax Description

vrf

(Optional) Displays VPN routing and forwarding (VRF) instance information.

vrf-name

(Optional) Name of a VRF.

prefix

(Optional) Longest matching CEF entry for the specified IPv4 destination prefix.

mask

(Optional) Exact CEF entry for the specified IPv4 prefix and mask.

interface-type

(Optional) Interface type. For more information, use the question mark (?) online help function.

interface-instance

Either a physical interface instance or a virtual interface instance:

Physical interface instance. Naming notation is rack/slot/module/port and a slash mark between values is required as part of the notation.

rack: Chassis number of the rack.
slot: Physical slot number of the line card.
module: Module number. A physical layer interface module (PLIM) is always 0.
port: Physical port number of the interface.

Note

In references to a Management Ethernet interface located on a route processor card, the physical slot number is alphanumeric (RSP0) and the module is CPU0. Example: interface MgmtEth0/RSP0 /CPU0/0.

Virtual interface instance. Number range varies depending on interface type.

For more information about the syntax for the router, use the question mark (?) online help function.

detail

(Optional) Displays full CEF entry information.

location node-id

(Optional) Displays the IPv4 CEF table for the designated node. The node-id argument is entered in the rack/slot/module notation.

Command Default

If the location is not specified, the command defaults to the active RP node.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command displays the CEF table on the node in which the command is issued. Otherwise, the command is effective on the node specified by the location node-id keyword and argument.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv4 command:


RP/0/RP0/CPU0:router/CPU0:router# show cef ipv4 
Prefix              Next Hop            Interface
------------------- ------------------- ------------------
0.0.0.0/0           drop                default handler
0.0.0.0/32          broadcast
1.75.55.1/32        1.76.0.1/32         <recursive>
1.76.0.0/16         attached            MgmtEth0/RP0/CPU0/0
1.76.0.0/32         broadcast           MgmtEth0/RP0/CPU0/0
1.76.0.1/32         1.76.0.1/32         MgmtEth0/RP0/CPU0/0
1.76.0.2/32         1.76.0.2/32         MgmtEth0/RP0/CPU0/0
1.76.0.3/32         1.76.0.3/32         MgmtEth0/RP0/CPU0/0
1.76.11.2/32        1.76.11.2/32        MgmtEth0/RP0/CPU0/0


RP/0/RP0/CPU0:router/CPU0:router# show cef ipv4 
Prefix              Next Hop            Interface
------------------- ------------------- ------------------
0.0.0.0/0           drop                default handler
0.0.0.0/32          broadcast
1.75.55.1/32        1.76.0.1/32         <recursive>
1.76.0.0/16         attached            MgmtEth0/RP0/CPU0/0
1.76.0.0/32         broadcast           MgmtEth0/RP0/CPU0/0
1.76.0.1/32         1.76.0.1/32         MgmtEth0/RP0/CPU0/0
1.76.0.2/32         1.76.0.2/32         MgmtEth0/RP0/CPU0/0
1.76.0.3/32         1.76.0.3/32         MgmtEth0/RP0/CPU0/0
1.76.11.2/32        1.76.11.2/32        MgmtEth0/RP0/CPU0/0

This table describes the significant fields shown in the display.

Table 4. show cef ipv4 Command Field Descriptions
Field	Description
Prefix	Prefix in the IPv4 CEF table.
Next Hop	Next hop of the prefix.
Interface	Interface associated with the prefix.

show cef ipv4 adjacency

To display Cisco Express Forwarding (CEF) IPv4 adjacency status and configuration information, use the show cef ipv4 adjacency command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 adjacency [interface-type interface-path-id] [location node-id] [detail] [discard] [glean] [null] [punt] [remote] [protected]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
`interface-type`	(Optional) Interface type. For more information, use the question mark (?) online help function.
`interface-` `path-id`	(Optional) Either a physical interface instance or a virtual interface instance: Physical interface instance. Naming notation is rack/slot/module/port and a slash mark between values is required as part of the notation. rack: Chassis number of the rack. slot: Physical slot number of the line card. module: Module number. A physical layer interface module (PLIM) is always 0. port: Physical port number of the interface. Virtual interface instance. Number range varies depending on interface type. For more information about the syntax for the router, use the question mark (?) online help function.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.
detail	(Optional) Displays the detailed adjacency information.
discard	(Optional) Filters out and displays only the discarded adjacency information.
glean	(Optional) Filters out and displays only the glean adjacency information.
null	(Optional) Filters out and displays only the adjacency information.
punt	(Optional) Filters out and displays only the punt adjacency information.
remote	(Optional) Filters out and displays only the remote adjacency information.
protected	(Optional) Filters out and displays only the IP-Fast Reroute (FRR) protected adjacency information.

Command Default

No default behavior or values

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the show cef ipv4 adjacency command displays the CEF adjacency table for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from show cef ipv4 adjacency command :


RP/0/RP0/CPU0:router# show cef ipv4 adjacency

Display protocol is ipv4
Interface    Address                                         Type    Refcount

Hu0/6/0/16                                                   special 2
             Interface: Hu0/6/0/16 Type:  glean
             Interface Type: 0x0, Base Flags: 0x220 (0x8ceb3f98)
             Nhinfo PT: 0x8ceb3f98, Idb PT: 0x8cb35a20, 
             If Handle: 0x30001e0 no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec  7 11:20:35.145


Hu0/6/0/16  Prefix: 10.0.22.2/32                            local   9
            Adjacency: PT:0x8d5752b8 10.0.22.2/32
            Interface: Hu0/6/0/16
            NHID: 0x0
            MAC: e6.07.2b.8d.33.f0.e6.48.5c.10.b3.a0.08.00
            Interface Type: 0x0, Base Flags: 0x1 (0x8d001fa0)
            Nhinfo PT: 0x8d001fa0, Idb PT: 0x8cb35a20,
            If Handle: 0x30001e0 no dependent adj
            Ancestor If Handle: 0x0
Update time Dec  7 11:20:45.022


Hu0/6/0/18                                                   special 2
             Interface: Hu0/6/0/18 Type:  glean
             Interface Type: 0x0, Base Flags: 0x220 (0x8ceb44c0)
             Nhinfo PT: 0x8ceb44c0, Idb PT: 0x8cb35920,
             If Handle: 0x30001f0 no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec  7 11:20:33.449


Hu0/6/0/18   Prefix: 10.0.62.2/32                            local   10
             Adjacency: PT:0x8d5794a0 10.0.62.2/32
             Interface: Hu0/6/0/18
             NHID: 0x0
             MAC: e6.07.2b.8d.34.48.e6.48.5c.10.b3.a8.08.00
             Interface Type: 0x0, Base Flags: 0x1 (0x8d002aa0)
             Nhinfo PT: 0x8d002aa0, Idb PT: 0x8cb35920
             If Handle: 0x30001f0 no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec  7 11:20:45.019

This table describes the significant fields shown in the display.

Table 5. show cef ipv4 adjacency Command Field Descriptions
Field	Description
Interface	Interface associated with the prefix.
Address	Prefix address information.
Type	Type of adjacency, can be either local or remote.
Refcount	Number of times the adjacency is referenced by other routers.

show cef ipv4 adjacency hardware

To display Cisco Express Forwarding (CEF) IPv4 adjacency hardware status and configuration information, use the show cef ipv4 adjacency hardware command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 adjacency hardware {egress} [detail | discard | drop | glean | location node-id | null | punt | protected | remote]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
egress	Displays information from the egress packet switch exchange (PSE) file.
detail	(Optional) Displays full details.
discard	(Optional) Displays the discard adjacency information.
drop	(Optional) Displays the drop adjacency information.
glean	(Optional) Displays the glean adjacency information.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.
null	(Optional) Displays the null adjacency information.
punt	(Optional) Displays the punt adjacency information.
protected	(Optional) Filters out and displays only the IP-Fast Reroute (FRR) protected adjacency information.
remote	(Optional) Displays the remote adjacency information.

Command Default

No default behavior or values

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output shows the load information flag from the show cef ipv4 adjacency hardware command for the egress keyword:


RP/0/RP0/CPU0:router# show cef ipv4 adjacency hardware egress detail location 0/2/CPU0

Display protocol is ipv4
Interface    Address                                         Type    Refcount

Hu0/6/0/16                                                   special 2
             Interface: Hu0/6/0/16 Type:  glean
             Interface Type: 0x0, Base Flags: 0x220 (0x87874298)
             Nhinfo PT: 0x87874298, Idb PT: 0x874f4a20, If Handle: 0x30001e0
             no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec  7 11:20:35.155


        SP-NHINFO:
            Trap Port: 0x16033036, Trap handle: (nil), npu_mask: 3f



Hu0/6/0/16   Prefix: 10.0.22.2/32                            local   9
             Adjacency: PT:0x8661b378 10.0.22.2/32
             Interface: Hu0/6/0/16
             NHID: 0x0
             MAC: e6.07.2b.8d.33.f0.e6.48.5c.10.b3.a0.08.00
             Interface Type: 0x0, Base Flags: 0x1 (0x88074420)
             Nhinfo PT: 0x88074420, Idb PT: 0x874f4a20, If Handle: 0x30001e0
             no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec  7 11:20:45.623


        TX-NHINFO:
            Encap hdl: 0x8a975b58 Encap id: 0x4003f004 Remote: 64
            L3 int: 0 npu_mask: 0

This table describes the significant fields shown in the display.

Table 6. show cef ipv4 adjacency hardware Command Field Descriptions
Field	Description
Interface	Interface associated with the prefix.
Address	Prefix address information.
Type	Type of adjacency, can be either local or remote.
Refcount	Number of times the adjacency is referenced by other routers.

show cef ipv4 drops

To display IPv4 Cisco Express Forwarding (CEF) table packet drop counters, use the show cef ipv4 drops command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 drops [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
location `node-id`	(Optional) Displays IPv4 CEF table packet drop counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

A packet might be dropped from the IPv4 CEF table because of unresolved CEF entries, unsupported features, absence of route information, absence of adjacency information, or an IP checksum error.

If you do not specify a node with the location keyword and node-id argument, this command displays IPv4 CEF packet drop counters for all nodes.

The show cef ipv4 drop command output counters include CEF table packet drop counters for IPv4 and IPv6 packets.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv4 drops for location command:

RP/0/RP0/CPU0:router# show cef ipv4 drops 

CEF Drop Statistics
Node: 0/RP0/CPU0
  Unresolved drops     packets :               0
  Unsupported drops    packets :               0
  Null0 drops          packets :               0
  No route drops       packets :               0
  No Adjacency drops   packets :               0
  Checksum error drops packets :               0
  RPF drops            packets :               0
  RPF suppressed drops packets :               0
  RP destined drops    packets :               0
  Discard drops        packets :               0
  GRE lookup drops     packets :               0
  GRE processing drops packets :               0
  LISP punt drops      packets :               0
  LISP encap err drops packets :               0
  LISP decap err drops packets :               0

Node: 0/RP1/CPU0
  Unresolved drops     packets :               0
  Unsupported drops    packets :               0
  Null0 drops          packets :               0
  No route drops       packets :               0
  No Adjacency drops   packets :               0
  Checksum error drops packets :               0
  RPF drops            packets :               0
  RPF suppressed drops packets :               0
  RP destined drops    packets :               0
  Discard drops        packets :               0
  GRE lookup drops     packets :               0
  GRE processing drops packets :               0
  LISP punt drops      packets :               0
  LISP encap err drops packets :               0
  LISP decap err drops packets :               0

Table 7. show cef ipv4 drop Command Field Descriptions
Field	Description
Unresolved drops	Drops due to unresolved routes.
Unsupported drops	Drops due to an unsupported feature.
Null0 drops	Drops to the Null0 interface.
No route drops	Number of packets dropped because there were no routes to the destination.
No Adjacency drops	Number of packets dropped because there were no adjacencies established.
Checksum error drops	Drops due to IPv4 checksum error.
RPF drops	Drops due to IPv4 unicast RPF¹.
RPF suppressed drops	Drops suppressed due to IPv4 unicast RPF.
RP destined drops	Drops destined for the router.
Discard drops	Drops those were discarded.
GRE lookup drops	GRE packets dropped during GRE Lookup.
GRE processing drops	GRE packets dropped during GRE Processing.
LISP punt drops	LISP packets dropped during software processing of the packets.
LISP encap err drops	LISP encap packets dropped due to errors.
LISP decap err drops	LISP Decap packets dropped due to errors.

¹ RPF = Reverse Path Forwarding

show cef ipv4 exact-route

To display an IPv4 Cisco Express Forwarding (CEF) exact route, use the show cef ipv4 exact-route command in XR EXEC mode.

show cef [vrf vrf-name]ipv4 exact-route {source-address destination-address}[ protocolprotocol-name] [ source-portsource-port] [ destination-portdestination-port] [ type interface-path-id] [policy-class-value][ detail | location node-id]

Syntax Description

vrf

(Optional) Displays VPN routing and forwarding (VRF) instance information.

vrf-name

(Optional) Name of a VRF.

source-address

The IPv4 source address in x.x.x.x format.

destination-address

The IPv4 destination address in x.x.x.x format.

protocol protocol name

(Optional) Displays the specified protocol for the route.

source-port source-port

(Optional) Sets the UDP source port. The range is from 0 to 65535.

destination-port destination-port

(Optional) Sets the UDP destination port. The range is from 0 to 65535.

type

(Optional) Interface type. For more information, use the question mark (?) online help function.

interface-path-id

Physical interface or virtual interface.

Note

Use the show interfaces command to see a list of all interfaces currently configured on the router.

For more information about the syntax for the router, use the question mark (?) online help function.

detail

(Optional) Displays full CEF entry information.

location node-id

(Optional) Displays the IPv4 CEF table for the designated node. The node-id argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If the Layer 4 information is enabled, the source-port, destination-port, and protocol fields are required. Otherwise, the output of the show cef ipv4 exact-route command is not correct.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv4 exact-route command:


RP/0/RP0/CPU0:router# show cef ipv4 exact-route 159.0.0.0 189.0.0.0

189.0.0.0/24, version 1952527, internal 0x1000001 0x83 (ptr 0x9019ebd0) [1], 0x0 (0x91a814b8), 0xa20 (0x8dcc6700)
 Updated Dec  9 17:15:37.521
 local adjacency 10.0.94.2
 Prefix Len 24, traffic index 0, precedence n/a, priority 2
   via TenGigE0/4/0/30/0
   via 10.0.94.2/32, TenGigE0/4/0/30/0, 7 dependencies, weight 0, class 0 [flags 0x0]
    path-idx 0 NHID 0x0 [0x8cffee20 0x8cffec20]
    next hop 10.0.94.2/32
    local adjacency
     local label 75001      labels imposed {ImplNull}

This table describes the significant fields shown in the display.

Table 8. show cef ipv4 exact-route Command Field Descriptions
Field	Description
Prefix	Prefix in the IPv4 CEF table .
Next Hop	Next hop of the prefix
Interface	Interface associated with the prefix

show cef ipv4 exceptions

To display IPv4 Cisco Express Forwarding (CEF) exception packet counters, use the show cef ipv4 exceptions command in .

show cef [vrf vrf-name] ipv4 exceptions [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
location `node-id`	(Optional) Displays CEF exception packet counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

CEF exception packets are those packets that have been sent from the hardware to the software because they require additional handling. The types of IPv4 CEF exception packets are displayed in the command’s output and are defined.

If you do not specify a node with the location keyword and node-id argument, this command displays IPv4 CEF exception packet counters on all nodes.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv4 exceptions command:


RP/0/# show cef ipv4 exceptions

CEF Exception Statistics
Node: 0/RP0/CPU0
  Slow encap  packets :               0
  Unsupported packets :               0
  Redirect    packets :               0
  Receive     packets :               0
  Broadcast   packets :               0
  IP options  packets :               0
  TTL expired packets :               0
  Fragmented  packets :               0
Node: 0/RP1/CPU0
  Slow encap  packets :               3
  Unsupported packets :               0
  Redirect    packets :               0
  Receive     packets :           12787
  Broadcast   packets :           74814
  IP options  packets :               0
  TTL expired packets :               0
  Fragmented  packets :               0

This table describes the significant fields shown in the display.

Table 9. show cef ipv4 exceptions Command Field Descriptions
Field	Description
Slow encap	Number of packets requiring special processing during encapsulation.
Redirect	Number of ICMP² redirect messages sent.
Receive	Number of packets destined to the router.
Broadcast	Number of broadcasts received.
IP options	Number of IP option packets.
TTL expired	Number of packets with expired TTLs³.
Fragmented	Number of packets that have been fragmented.

² ICMP = internet control message protocol

³ TTL = time to live

show cef ipv4 hardware

To display Cisco Express Forwarding (CEF) IPv4 hardware status and configuration information, use the show cef ipv4 hardware command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 hardware {egress | [detail | location node-id]}

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
vrf-name	(Optional) Name of a VRF.
egress	Displays information from the egress packet switch exchange (PSE) file.
detail	(Optional) Displays full details.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv4 hardware command:


RP/0/RP0/CPU0:router# sh cef ipv4 hardware egress detail location 0/6/CPU0

0.0.0.0/0, version 0, proxy default, default route handler, drop adjacency,
 internal 0x1001011 0x0 (ptr 0x887e40a8) [1], 0x0 (0x88772098), 0x0 (0x0)
 Updated Dec 20 22:22:08.311
 Prefix Len 0, traffic index 0, precedence n/a, priority 15
  gateway array (0x88534098) reference count 1, flags 0x200, source default (12), 0 backups
                [2 type 3 flags 0xa401 (0x885db098) ext 0x0 (0x0)]
  LW-LDI[type=3, refc=1, ptr=0x88772098, sh-ldi=0x885db098]
  gateway array update type-time 1 Dec 20 22:22:08.311
 LDI Update time Dec 20 22:22:08.327
 LW-LDI-TS Dec 20 22:22:08.337
   via 0.0.0.0/32, 3 dependencies, weight 0, class 0 [flags 0x0]
    path-idx 0 NHID 0x0 [0x8778d3c8 0x0]
    next hop 0.0.0.0/32
     drop adjacency


 LEAF - HAL pd context :
 sub-type : IPV4, ecd_marked:0, has_collapsed_ldi:0
 collapse_bwalk_required:0, ecdv2_marked:0
HW Walk:
LEAF:
    Handle: 0x88c40098 type: 0 FEC handle: 0x8894d098

    LWLDI:
        PI:0x88772098 PD:0x887720d8 rev:1 p-rev:0 ldi type:3
        FEC hdl: 0x8894d098 fec index: 0x0(0) num paths:1, bkup: 0

        SHLDI:
            PI:0x885db098 PD:0x885db118 rev:0 p-rev:0 flag:0x0
            FEC hdl: 0x8894d098 fec index: 0x20001001(4097) num paths: 1 bkup paths: 0
            Path:0 fec index: 0x20001001(4097) DSP:0x16033037

        SP-NHINFO:
            PD: 0x8778d438, Trap Port: 0x16033037, Trap handle: (nil), npu_mask: 3f



    Load distribution: 0 (refcount 2)

    Hash  OK  Interface                 Address
    0     Y   Unknown                   drop
0.0.0.0/32, version 0, broadcast
  Updated Dec 20 22:22:08.365
  Prefix Len 32


 LEAF - HAL pd context :
 sub-type : IPV4, ecd_marked:0, has_collapsed_ldi:0
 collapse_bwalk_required:0, ecdv2_marked:0
HW Walk:
LEAF:
    Handle: 0x88c404d8 type: 0 FEC handle: 0x88957fe8

    LWLDI:
        PI:0x887723e8 PD:0x88772428 rev:11 p-rev:8 ldi type:3
        FEC hdl: 0x88957fe8 fec index: 0x0(0) num paths:1, bkup: 0

        SHLDI:
            PI:0x885dc478 PD:0x885dc4f8 rev:8 p-rev:0 flag:0x0
            FEC hdl: 0x88957fe8 fec index: 0x20001004(4100) num paths: 1 bkup paths: 0
            Path:0 fec index: 0x20001004(4100) DSP:0x16033037

        SP-NHINFO:
            PD: 0x8778d548, Trap Port: 0x16033037, Trap handle: (nil), npu_mask: 3f

1.75.55.1/32, version 11, internal 0x1000001 0x0 (ptr 0x887e4d50) [1], 0x0 (0x0), 0x0 (0x0)
 Updated Dec 20 22:22:24.596
 Prefix Len 32, traffic index 0, precedence n/a, priority 3
  gateway array (0x88534de0) reference count 3, flags 0x4010, source rib (7), 0 backups
                [1 type 3 flags 0x48501 (0x885e45a8) ext 0x0 (0x0)]
  LW-LDI[type=0, refc=0, ptr=0x0, sh-ldi=0x0]
  gateway array update type-time 1 Dec 20 22:22:24.594
 LDI Update time Dec 20 22:22:24.727
   via 1.76.0.1/32, 2 dependencies, recursive [flags 0x0]
    path-idx 0 NHID 0x0 [0x887e4c78 0x0]
    next hop 1.76.0.1/32 via 1.76.0.1/32


 LEAF - HAL pd context :
 sub-type : IPV4, ecd_marked:0, has_collapsed_ldi:0
 collapse_bwalk_required:0, ecdv2_marked:0
HW Walk:
LEAF:
    Handle: 0x88c42078 type: 0 FEC handle: 0x88999bc8

 REC-SHLDI HAL PD context :
ecd_marked:0, collapse_bwalk_required:0, load_shared_lb:0

    RSHLDI:
        PI:0x0x885e45a8 PD:0x0x885e4624 rev:0 p-rev:0 flag:0x1
        FEC hdl: 0x88999bc8 fec index: 0x20001012(4114) num paths: 1
        Path:0 fec index: 0x20001012(4114) DSP:0x16033036
                MPLS Encap Handle: (nil) LL Encap Handle: (nil)

        TX-NHINFO: INCOMPLETE
            Trap Port: 0x16033036 npu_mask: 0



    Load distribution: 0 (refcount 1)

    Hash  OK  Interface                 Address
    0     Y   MgmtEth0/RP0/CPU0/0       1.76.0.1
1.76.0.0/16, version 8, attached, connected, glean adjacency,
 internal 0x3000061 0x0 (ptr 0x887e49f0) [1], 0x0 (0x88773cc0), 0x0 (0x0)
 Updated Dec 20 22:22:23.985
 Prefix Len 16, traffic index 0, precedence n/a, priority 0
  gateway array (0x88534b88) reference count 1, flags 0x0, source rib (7), 0 backups
                [2 type 3 flags 0x8401 (0x885e1de8) ext 0x0 (0x0)]
  LW-LDI[type=3, refc=1, ptr=0x88773cc0, sh-ldi=0x885e1de8]
  gateway array update type-time 1 Dec 20 22:22:23.986
 LDI Update time Dec 20 22:22:23.986
 LW-LDI-TS Dec 20 22:22:24.179
   via MgmtEth0/RP0/CPU0/0, 2 dependencies, weight 0, class 0 [flags 0x8]
    path-idx 0 NHID 0x0 [0x8778e3b8 0x0]
     glean adjacency


 LEAF - HAL pd context :
 sub-type : IPV4, ecd_marked:0, has_collapsed_ldi:0
 collapse_bwalk_required:0, ecdv2_marked:0
HW Walk:
LEAF:
    Handle: 0x88c417f8 type: 0 FEC handle: 0x88983d28

    LWLDI:
        PI:0x88773cc0 PD:0x88773d00 rev:61 p-rev:60 ldi type:3
        FEC hdl: 0x88983d28 fec index: 0x0(0) num paths:1, bkup: 0

        SHLDI:
            PI:0x885e1de8 PD:0x885e1e68 rev:60 p-rev:0 flag:0x0
            FEC hdl: 0x88983d28 fec index: 0x2000100e(4110) num paths: 1 bkup paths: 0
            Path:0 fec index: 0x2000100e(4110) DSP:0x16033036

        SP-NHINFO:
            PD: 0x8778e428, Trap Port: 0x16033036, Trap handle: (nil), npu_mask: 3f



    Load distribution: 0 (refcount 2)

    Hash  OK  Interface                 Address
    0     Y   MgmtEth0/RP0/CPU0/0       glean
1.76.0.0/32, version 0, broadcast
  Updated Dec 20 22:22:24.459
  Prefix Len 32


 LEAF - HAL pd context :
 sub-type : IPV4, ecd_marked:0, has_collapsed_ldi:0
 collapse_bwalk_required:0, ecdv2_marked:0
HW Walk:
LEAF:
    Handle: 0x88c41c38 type: 0 FEC handle: 0x8898ec78

    LWLDI:
        PI:0x88774010 PD:0x88774050 rev:65 p-rev:64 ldi type:3
        FEC hdl: 0x8898ec78 fec index: 0x0(0) num paths:1, bkup: 0

        SHLDI:
            PI:0x885e31c8 PD:0x885e3248 rev:64 p-rev:0 flag:0x0
            FEC hdl: 0x8898ec78 fec index: 0x20001010(4112) num paths: 1 bkup paths: 0
            Path:0 fec index: 0x20001010(4112) DSP:0x16033037

        SP-NHINFO:
            PD: 0x8778d548, Trap Port: 0x16033037, Trap handle: (nil), npu_mask: 3f

1.76.0.1/32, version 0, internal 0x1020001 0x0 (ptr 0x887e4c78) [2], 0x0 (0x887741b8), 0x0 (0x0)
 Updated Dec 20 22:22:24.593
 Prefix Len 32, traffic index 0, Adjacency-prefix, precedence n/a, priority 15
  gateway array (0x88534ea8) reference count 1, flags 0x0, source internal (11), 0 backups
                [2 type 3 flags 0x8401 (0x885e3bb8) ext 0x0 (0x0)]
  LW-LDI[type=3, refc=1, ptr=0x887741b8, sh-ldi=0x885e3bb8]
  gateway array update type-time 1 Dec 20 22:22:24.594
 LDI Update time Dec 20 22:22:24.594
 LW-LDI-TS Dec 20 22:22:24.657
   via 1.76.0.1/32, MgmtEth0/RP0/CPU0/0, 3 dependencies, weight 0, class 0 [flags 0x0]
    path-idx 0 NHID 0x0 [0x87ee71b8 0x0]
    next hop 1.76.0.1/32
    local adjacency


 LEAF - HAL pd context :
 sub-type : IPV4, ecd_marked:0, has_collapsed_ldi:0
 collapse_bwalk_required:0, ecdv2_marked:0
HW Walk:

show cef ipv4 interface

To display IPv4 Cisco Express Forwarding (CEF)-related information for an interface, use the show cef ipv4 interface command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 interface type interface-path-id [detail] [location node-id]

Syntax Description

vrf

(Optional) Displays VPN routing and forwarding (VRF) instance information.

vrf-name

(Optional) Name of a VRF.

type

Interface type. For more information, use the question mark (?) online help function.

in terface-path-id

Either a physical interface instance or a virtual interface instance as follows:

Physical interface instance. Naming notation is rack/slot/module/port and a slash between values is required as part of the notation.

rack: Chassis number of the rack.
slot: Physical slot number of the modular services card or line card.
module: Module number. A physical layer interface module (PLIM) is always 0.
port: Physical port number of the interface.

Note

In references to a Management Ethernet interface located on a route processor card, the physical slot number is alphanumeric (RSP0) and the module is CPU0. Example: interface HundredGigE 0/RSP0 /CPU0/0.

Virtual interface instance. Number range varies depending on interface type.

For more information about the syntax for the router, use the question mark (?) online help function.

detail

(Optional) Displays detailed CEF information for all the interfaces on the node in which the command is issued.

location node-id

(Optional) Displays IPv4 CEF-related information for an interface. The node-id argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the show cef ipv4 interface rpf-statistics command displays the CEF-related information for the interface on the route processor.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv4 interface command:


RP/0/RP0/CPU0:router# show cef ipv4 interface  hundredGigE 0/4/0/0

HundredGigE0/4/0/0 is up if_handle 0x02000148 if_type IFT_HUNDREDGE(0x49)
     idb info 0x87674320 flags 0x8001 ext 0x89a1c648 flags 0x50
     Vrf Local Info (0x899dd790)
  Interface last modified Dec  7, 2015 08:07:58, create
  Reference count 1       Next-Hop Count 2
  Forwarding is enabled
  ICMP redirects are never sent
  ICMP unreachables are enabled
  Protocol MTU 8986, TableId 0xe0000000(0x87aff378)
  Protocol Reference count 2
  Primary IPV4 local address 10.0.1.0/32

This table describes the significant fields shown in the display.

Table 10. show cef ipv4 interface Command Field Descriptions
Field	Description
HundredGigE 0/RSP0/CPU0/0 is up	Status of the interface.
if_handle	Internal interface handle.
Forwarding is enabled	Indicates that Cisco Express Forwarding (CEF) is enabled.
ICMP redirects are always sent or never sent	Indicates whether ICMP⁴ redirect messages should be sent. By default, ICMP redirect messages are always sent.
IP MTU	Value of the IPv4 MTU⁵ size set on the interface.
Reference count	Internal reference counter.

⁴ ICMP = internet control message protocol

⁵ MTU = maximum transmission unit

show cef ipv4 resource

To display the IPv4 nonrecursive prefix entries in the IPv4 Cisco Express Forwarding (CEF) table, use the show cef ipv4 resource command in XR EXEC mode.

show cef ipv4 resource [detail] [location node-id]

Syntax Description


detail	(Optional) Displays detailed information resources listed in the IPv4 CEF table.
location `node-id`	(Optional) Displays the IPv4 resource entries in the IPv4 CEF table for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the output displays the IPv4 CEF nonrecursive routes for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv4 resource command:


RP/0/RP0/CPU0:router# show cef ipv4 resource detail

CEF resource availability summary state: GREEN
  ipv4 shared memory resource:
        CurrMode GREEN, CurrUtil 0%
        CurrAvail 1874526208 bytes, MaxAvail 1875693568 bytes
  ipv6 shared memory resource:
        CurrMode GREEN, CurrUtil 0%
        CurrAvail 1874591744 bytes, MaxAvail 1875365888 bytes
  mpls shared memory resource:
        CurrMode GREEN, CurrUtil 0%
        CurrAvail 1874407424 bytes, MaxAvail 1875038208 bytes
  common shared memory resource:
        CurrMode GREEN, CurrUtil 0%
        CurrAvail 1873215488 bytes, MaxAvail 1874972672 bytes
  TABLE hardware resource: GREEN
  LEAF hardware resource: GREEN
  LOADINFO hardware resource: GREEN
  NHINFO hardware resource: GREEN
  LABEL_INFO hardware resource: GREEN
  IDB hardware resource: GREEN
  FRR_NHINFO hardware resource: GREEN
  LDSH_ARRAY hardware resource: GREEN
  RSRC_MON hardware resource: GREEN

show cef ipv4 summary

To display a summary of the IPv4 Cisco Express Forwarding (CEF) table, use the show cef ipv4 summary command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 summary [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
location `node-id`	(Optional) Displays a summary of the IPv4 CEF table for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command displays a summary of the IPv4 CEF table for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv4 summary command:


RP/0/RP0/CPU0:router# show cef ipv4 summary 
Router ID is 
10
0
.0.0.0

IP CEF with switching (Table Version 0)

  Load balancing: L3
  Tableid 0xe0000000, Vrfid 0x60000000, Vrid 0x20000000, Flags 0x301
  Vrfname default, Refcount 367
  193 routes, 0 reresolve, 0 unresolved (0 old, 0 new), 13896 bytes
  204 load sharing elements, 51904 bytes, 154 references
  17 shared load sharing elements, 5536 bytes
  187 exclusive load sharing elements, 46368 bytes
  0 CEF route update drops, 175 revisions of existing leaves
  Resolution Timer: 15s
  0 prefixes modified in place
  0 deleted stale prefixes
  16 prefixes with label imposition, 51 prefixes with label information
Adjacency Table has 44 adjacencies
  1 incomplete adjacency

This table describes the significant fields shown in the display.

Table 11. show cef ipv4 summary Command Field Descriptions
Field	Description
Load balancing	Current load-balancing mode. The default value is L3.
Table Version	Version of the CEF table.
tableid	Table identification number.
vrfid	VPN routing and forwarding (VRF) identification (vrfid) number.
vrfname	VRF name.
vrid	Virtual router identification (vrid) number.
flags	Option value for the table
routes	Total number of routes.
reresolve	Total number of routes being reresolved.
unresolved (x old, x new)	Number of routes not yet resolved.
load sharing elements	Total number of internal load-sharing data structures.
bytes	Total memory used by internal load sharing data structures.
references	Total reference count of all internal load sharing data structures.
CEF resets	Number of CEF table resets.
revisions of existing leaves	Number of updates to existing prefixes.
Exponential (currently xs, peak xs)	Currently not used.
prefixes modified in place	Prefixes modified in place.
Adjacency Table has x adjacencies	Total number of adjacencies.
x incomplete adjacency	Total number of incomplete adjacencies.

show cef ipv4 unresolved

To display unresolved routes in the IPv4 Cisco Express Forwarding (CEF) table, use the show cef ipv4 unresolved command in XR EXEC mode.

show cef [vrf vrf-name] ipv4 unresolved [detail] [hardware {egress}] [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
detail	(Optional) Displays detailed information unresolved routes listed in the IPv4 CEF table.
hardware	(Optional) Displays detailed information about hardware.
egress	(Optional) Displays egress packet switch exchange (PSE).
location `node-id`	(Optional) Displays the unresolved routes in the IPv4 CEF table for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the output displays the unresolved routes for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv4 unresolved command when an unresolved route is detected:


RP/0/RP0/CPU0:router# show cef ipv4 unresolved

Prefix              Next Hop            Interface
10.3.3.3              102.2.2.2                ?

This table describes the significant fields shown in the display.

Table 12. show cef ipv4 unresolved Command Field Descriptions
Field	Description
Prefix	Prefix of the unresolved CEF.
Next Hop	Next hop of the unresolved CEF.
Interface	Next hop interface. A question mark (?) indicates that the interface has not been resolved.

show cef ipv6

To display the IPv6 Cisco Express Forwarding (CEF) table, use the show cef ipv6 command in XR EXEC mode.

show cef [vrf vrf-name]] ipv6[ interface-type interface-number | ipv6-prefix/ prefix-length] [ detail] [ locationnode-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
`interface-type interface-number`	(Optional) IPv6 prefixes going through the specified next hop interface.
`ipv6-prefix/prefix-length`	(Optional) Longest prefix entry in the CEF table matching the specified IPv6 prefix and prefix length.
detail	(Optional) Displays detailed IPv6 CEF table information.
location `node-id`	(Optional) Displays the IPv6 CEF table for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command displays the IPv6 CEF table for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv6 command:


RP/0/RP0/CPU0:router# show cef ipv6

::/0
drop default handler 
fe80::/10
receive 
ff02::/16
receive 
ff02::2/128
receive 
ff02::1:ff00:0/104
receive 
ff05::/16
receive 
ff12::/16
receive

This table describes the significant fields shown in the display.

Table 13. show cef ipv6 Command Field Descriptions
Field	Description
drop	Indicates that packets sent to the destination prefix are dropped.
loopback	Indicates that the prefix points to a loopback address. Packets sent to loopback addresses are dropped.
receive	Indicates that the prefix is configured on one of the router interfaces. Packets sent to those prefixes are received by the router.
connected	Indicates that the prefix points to a directly connected next-hop interface.
recursive	Indicates that the prefix is not directly connected but is reachable through the next-hop prefix displayed.

The following sample output is from the show cef ipv6 with the detail keyword:


RP/0/RP0/CPU0:router# show cef ipv6 detail


::/0, version 0, proxy default, default route handler, drop adjacency, internal 0x1001011 0x0 (ptr 0x8d7d52dc) [1], 0x0 (0x8db46098), 0x0 (0x0)
Updated Nov 22 22:57:58.580
Prefix Len 0, traffic index 0, precedence n/a, priority 15
via ::/128, 3 dependencies, weight 0, class 0 [flags 0x0]
path-idx 0 NHID 0x0 [0x8cf1c218 0x0]
next hop ::/128
drop adjacency
::ffff:90.0.0.1/128, version 14, attached, receive
Updated Nov 25 15:28:03.320
Prefix Len 128
internal 0x1004141 (ptr 0x8d7d48b4) [1], 0x0 (0x8db462c8), 0x0 (0x0)
fe80::/10, version 0, receive
Updated Nov 22 22:57:58.611
Prefix Len 10
internal 0x1004001 (ptr 0x8d7d4cc4) [1], 0x0 (0x8db461e8), 0x0 (0x0)
ff02::/16, version 0, receive
Updated Nov 22 22:57:58.611
Prefix Len 16
internal 0x1004001 (ptr 0x8d7d4f14) [1], 0x0 (0x8db46140), 0x0 (0x0)
ff02::2/128, version 0, receive
Updated Nov 22 22:57:58.611
Prefix Len 128
internal 0x1004001 (ptr 0x8d7d4fe4) [1], 0x0 (0x8db46108), 0x0 (0x0)
ff02::1:ff00:0/104, version 0, receive
Updated Nov 22 22:57:58.601
Prefix Len 104
internal 0x1004001 (ptr 0x8d7d520c) [1], 0x0 (0x8db460d0), 0x0 (0x0)
ff05::/16, version 0, receive
Updated Nov 22 22:57:58.607
Prefix Len 16
internal 0x1004001 (ptr 0x8d7d513c) [1], 0x0 (0x8db461b0), 0x0 (0x0)
ff12::/16, version 0, receive
Updated Nov 22 22:57:58.607
Prefix Len 16
internal 0x1004001 (ptr 0x8d7d4d94) [1], 0x0 (0x8db46178), 0x0 (0x0)

This table describes the significant output fields shown in the display.

Table 14. show cef ipv6 detail Command Field Descriptions
Field	Description
flags:	Properties of the indicated prefix.
Loadinfo owner:	Owner of the Loadinfo used by the prefix for forwarding. The Loadinfo owner is the prefix that owns the array of pointers to adjacencies.
fast adj:	Cached adjacency used for forwarding.
path 1:	The following three items are displayed below path 1: flags–Properties of the path. next hop–Next-hop prefix if the packet is being forwarded. interface–Next-hop interface if the packet is being forwarded.

show cef ipv6 adjacency

To display Cisco Express Forwarding (CEF) IPv6 adjacency status and configuration information, use the show cef ipv6 adjacency command in XR EXEC mode.

show cef [vrf vrf-name] ipv6 adjacency [interface-type interface-path-id] [location node-id] [detail] [discard] [glean] [null] [punt] [remote]

Syntax Description

vrf

(Optional) Displays VPN routing and forwarding (VRF) instance information.

vrf-name

(Optional) Name of a VRF.

interface-type

(Optional) Interface type. For more information, use the question mark (?) online help function.

interface- path-id

(Optional) Either a physical interface instance or a virtual interface instance:

Physical interface instance. Naming notation is rack/slot/module/port and a slash mark between values is required as part of the notation.

rack: Chassis number of the rack.
slot: Physical slot number of the line card.
module: Module number. A physical layer interface module (PLIM) is always 0.
port: Physical port number of the interface.

Note

In references to a Management Ethernet interface located on a route processor card, the physical slot number is alphanumeric (RSP0) and the module is CPU0. Example: interface MgmtEth0/RSP0 /CPU0/0.

Virtual interface instance. Number range varies depending on interface type.

For more information about the syntax for the router, use the question mark (?) online help function.

location node-id

(Optional) Displays detailed CEF information for the designated node. The node-id argument is entered in the rack/slot/module notation.

detail

(Optional) Displays the detailed adjacency information.

discard

(Optional) Filters out and displays only the discarded adjacency information.

glean

(Optional) Filters out and displays only the glean adjacency information.

null

(Optional) Filters out and displays only the null adjacency information.

punt

(Optional) Filters out and displays only the punt adjacency information.

remote

(Optional) Filters out and displays only the remote adjacency information.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command displays the CEF adjacency table for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv6 adjacency command:


RP/0/RP0/CPU0:router# show cef ipv6 adjacency

Hu0/4/0/6                                                    special 2
             Interface: Hu0/4/0/6 Type:  glean
             Interface Type: 0x0, Base Flags: 0x220 (0x8cf24d98)
             Nhinfo PT: 0x8cf24d98, Idb PT: 0x8cb39da0, If Handle: 0x2000198
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 20 22:29:18.442


Hu0/4/0/6    Prefix: 10:0:18::2/128                          local   6
             no next-hop adj
             Interface: NULLIFHNDL
             NHID: 0x0
             Mac-length is 0
             incomplete
             Interface Type: 0x0, Base Flags: 0x8 (0x8d318778)
             Nhinfo PT: 0x8d318778, Idb PT: 0x8cb39da0, If Handle: 0x2000198
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 20 22:29:18.446


Hu0/4/0/25                                                   special 2
             Interface: Hu0/4/0/25 Type:  glean
             Interface Type: 0x0, Base Flags: 0x220 (0x8cf24d18)
             Nhinfo PT: 0x8cf24d18, Idb PT: 0x8cb39420, If Handle: 0x2000230
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 20 22:29:09.986


Hu0/4/0/25   Prefix: fe80::e407:2bff:fe8d:3418/128           local   3
             Adjacency: PT:0x8d568048 fe80::e407:2bff:fe8d:3418/128
             Interface: Hu0/4/0/25
             NHID: 0x0
             MAC: e6.07.2b.8d.34.18.e6.48.5c.10.b2.a4.86.dd
             Interface Type: 0x0, Base Flags: 0x1 (0x8d318558)
             Nhinfo PT: 0x8d318558, Idb PT: 0x8cb39420, If Handle: 0x2000230
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 20 22:29:15.089

This is a sample output from the show cef ipv6 adjacency remote detail command:


RP/0/RP0/CPU0:router# show cef ipv6 adjacency remote detail location 0/RP0/CPU0 

Display protocol is ipv6
Interface    Address                                         Type    Refcount

Te0/2/0/3    Ifhandle: 0x8000240                             remote  2
             Adjacency: PT:0xa1bed9e4 
             Interface: Te0/2/0/3
             Interface Type: 0x0, Base Flags: 0x0 (0xa55f3114)
             Nhinfo PT: 0xa55f3114, Idb PT: 0xa2d850d8, If Handle: 0x8000240
             Ancestor If Handle: 0x0


tt103        Ifhandle: 0x120                                 remote  1
             no next-hop adj
             Interface: NULLIFHNDL
             tunnel adjacency
             Interface Type: 0x24, Base Flags: 0x200 (0xa61ddc30)
             Nhinfo PT: 0xa61ddc30, Idb PT: 0xa2d851d8, If Handle: 0x120
             Ancestor If Handle: 0x0


tt2993       Ifhandle: 0xf9a0                                remote  1
             no next-hop adj
             Interface: NULLIFHNDL
             tunnel adjacency
             Interface Type: 0x24, Base Flags: 0x200 (0xa65634f0)
             Nhinfo PT: 0xa65634f0, Idb PT: 0xa2d94a58, If Handle: 0xf9a0
             Ancestor If Handle: 0x0


tt2994       Ifhandle: 0xf9e0                                remote  1
             no next-hop adj
             Interface: NULLIFHNDL
             tunnel adjacency
             Interface Type: 0x24, Base Flags: 0x200 (0xa65641e0)
             Nhinfo PT: 0xa65641e0, Idb PT: 0xa2d94a98, If Handle: 0xf9e0
             Ancestor If Handle: 0x0


tt2995       Ifhandle: 0xfa20                                remote  1
             no next-hop adj
             Interface: NULLIFHNDL
             tunnel adjacency
             Interface Type: 0x24, Base Flags: 0x200 (0xa6564350)
             Nhinfo PT: 0xa6564350, Idb PT: 0xa2d94ad8, If Handle: 0xfa20
             Ancestor If Handle: 0x0

show cef ipv6 adjacency hardware

To display Cisco Express Forwarding (CEF) IPv6 adjacency hardware status and configuration information, use the show cef ipv6 adjacency hardware command in XR EXEC mode.

show cef [vrf vrf-name] ipv6 adjacency hardware {egress} [detail | discard | drop | glean | location node-id | null | punt | remote]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
egress	Displays information from the egress packet switch exchange (PSE) file.
detail	(Optional) Displays full details.
discard	(Optional) Displays the discard adjacency information.
drop	(Optional) Displays the drop adjacency information.
glean	(Optional) Displays the glean adjacency information.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.
null	(Optional) Displays the null adjacency information.
punt	(Optional) Displays the punt adjacency information.
remote	(Optional) Displays the remote adjacency information.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv6 adjacency hardware command:


RP/0/RP0/CPU0:router#  sh cef ipv6 adjacency hardware egress location 0/6/CPU

Display protocol is ipv6
Interface    Address                                         Type    Refcount

Te0/2/0/24/0                                                 special 2
             Interface: Te0/2/0/24/0 Type:  glean
             Interface Type: 0x0, Base Flags: 0x220 (0x877c4280)
             Nhinfo PT: 0x877c4280, Idb PT: 0x87414620, If Handle: 0x10002c0
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 20 22:29:31.635


        SP-NHINFO:
            PD: 0x877c42f8, Trap Port: 0x16033036, Trap handle: (nil), npu_mask: 3f



Te0/2/0/24/0 Prefix: 10:0:8::2/128                           local   3
             Adjacency: PT:0x86ca5ba0 10:0:8::2/128
             Interface: Te0/2/0/24/0
             NHID: 0x0
             MAC: 10.f3.11.4c.71.9c.e6.48.5c.10.b1.80.86.dd
             Interface Type: 0x0, Base Flags: 0x1 (0x8adc4920)
             Nhinfo PT: 0x8adc4920, Idb PT: 0x87414620, If Handle: 0x10002c0
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 20 22:29:45.496


        TX-NHINFO:
            PD: 0x8adc4998 Encap hdl: 0x8ae01008 Encap id: 0x4003f008 Remote: 64
            L3 int: 0 npu_mask: 0



Te0/2/0/24/0 Prefix: fe80::12f3:11ff:fe4c:719c/128           local   5
             Adjacency: PT:0x86ca64e0 fe80::12f3:11ff:fe4c:719c/128
             Interface: Te0/2/0/24/0
             NHID: 0x0
             MAC: 10.f3.11.4c.71.9c.e6.48.5c.10.b1.80.86.dd
             Interface Type: 0x0, Base Flags: 0x1 (0x8adc4c80)
             Nhinfo PT: 0x8adc4c80, Idb PT: 0x87414620, If Handle: 0x10002c0
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 20 22:29:49.590

RP/0/RP0/CPU0:fretta-54#sh cef ipv4 hardware
                                ^
% Invalid input detected at '^' marker.
RP/0/RP0/CPU0:fretta-54#sh cef ipv4 hardware egress ?
  detail    Display full information
  flags     Interpret any flags in the output(cisco-support)
  internal  internal information
  location  specify a node name
  |         Output Modifiers

show cef ipv6 drops

To display IPv6 Cisco Express Forwarding (CEF) table packet drop counters, use the show cef ipv6 drops command in XR EXEC mode.

show cef [vrf vrf-name]ipv6 drops [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
location `node-id`	(Optional) Displays IPv6 CEF table packet drop counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

A packet might be dropped by the IPv6 CEF table because of unresolved CEF entries, unsupported features, absence of route information, absence of adjacency information, or an IP checksum error.

If you do not specify a node with the location keyword and node-id argument, this command displays the packet drops for all nodes.

Note

Because no hardware forwarding occurs on the route processor (RP), no packet drop information is displayed for that node.

The show cef ipv6 drop command output counters include CEF table packet drop counters for IPv4 and IPv6 packets.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv6 drops command:



RP/0/RP0/CPU0:router# show cef ipv6 drops location 0/RP0/CPU0

CEF Drop Statistics
Node: 0/RP0/CPU0
  Unresolved drops     packets :               0
  Unsupported drops    packets :               0
  Null0 drops          packets :               0
  No route drops       packets :               1
  No Adjacency drops   packets :               0
  Checksum error drops packets :               0
  RPF drops            packets :               0
  RPF suppressed drops packets :               0
  RP destined drops    packets :               0
  Discard drops        packets :               0
  GRE lookup drops     packets :               0
  GRE processing drops packets :               0
  LISP punt drops      packets :               0
  LISP encap err drops packets :               0
  LISP decap err drops packets :               0

Table 15. show cef ipv6 drops Command Field Descriptions
Field	Description
Unresolved drops	Drops due to unresolved routes.
Unsupported drops	Drops due to an unsupported feature.
Null0 drops	Drops to the Null0 interface.
No route drops	Number of packets dropped because there were no routes to the destination.
No Adjacency drops	Number of packets dropped because there were no adjacencies established.
Checksum error drops	Drops due to IPv6 checksum error.
RPF drops	Drops due to IPv6 unicast RPF⁶.
RPF suppressed drops	Drops suppressed due to IPv6 unicast RPF.
RP destined drops	Drops destined for the router.
Discard drops	Drops those were discarded
GRE lookup drops	GRE packets dropped during GRE Lookup.
GRE processing drops	GRE packets dropped during GRE Processing.
LISP punt drops	LISP packets dropped during software processing of the packets.
LISP encap err drops	LISP encap packets dropped due to errors.
LISP decap err drops	LISP Decap packets dropped due to errors.

⁶ RPF = Reverse Path Forwarding

show cef ipv6 exact-route

To display the path an IPv6 flow comprising a source and destination address would take, use the show cef ipv6 exact-route command in XR EXEC mode.

show cef [vrf vrf-name]ipv6 exact-route {source-address destination-address}[ protocolprotocol name] [ source-portsource-port] [ destination-portdestination-port] [ ingress-interfacetype interface-path-id] [ policy-class value] [ detail | location node-id]]

Syntax Description

vrf

(Optional) Displays VPN routing and forwarding (VRF) instance information.

vrf-name

(Optional) Name of a VRF.

source-address

The IPv6 source address in x:x::x format.

destination-address

The IPv6 destination address in x:x::x format.

protocol protocol name

(Optional) Displays the specified protocol for the route.

source-port source-port

(Optional) Sets the UDP source port. The range is from 0 to 65535.

destination-port destination-port

(Optional) Sets the UDP destination port. The range is from 0 to 65535.

ingress-interface

(Optional) Sets the ingress interface.

type

(Optional) Interface type. For more information, use the question mark (?) online help function.

interface-path-id

Physical interface or virtual interface.

Note

Use the show interfaces command to see a list of all interfaces currently configured on the router.

For more information about the syntax for the router, use the question mark (?) online help function.

policy-class value

(Optional) Displays the class for the policy-based tunnel selection. The range for the tunnel policy class value is from 1 to 7.

detail

(Optional) Displays full CEF entry information.

location node-id

(Optional) Displays the IPv6 CEF table for the designated node. The node-id argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If the Layer 4 information is enabled, the source-port, destination-port, protocol, and ingress-interface fields are required. Otherwise, the output of the show cef ipv6 exact-route command is not correct.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv6 exact-route command:


RP/0/RP0/CPU0:router# show cef ipv6 exact-route 222::2 9999::6751 location

0/RP0/CPU0 source address: 222::2 destination address: 9999::6751
interface : HundredGigE 0/3/0/3 non local interface

show cef ipv6 exceptions

To display IPv6 Cisco Express Forwarding (CEF) exception packet counters, use the show cef ipv6 exceptions command in XR EXEC mode.

show cef [vrf vrf-name] ipv6 exceptions [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
location `node-id`	(Optional) Displays IPv6 CEF exception packet counters for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

CEF exception packets are those packets that have been sent from the hardware to the software because they require additional handling. The types of IPv6 CEF exception packets are displayed in the output of show cef ipv6 exceptions .

If you do not specify a node with location keyword and node-id argument, this command displays IPv6 CEF exception packet counters for all nodes.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv6 exceptions command:


RP/0/RP0/CPU0:router# show cef ipv6 exceptions location 0/RP0/CPU0

CEF Exception Statistics
Node: 0/RP0/CPU0
  Slow encap  packets :               0
  Unsupported packets :               0
  Redirect    packets :               0
  Receive     packets :               1
  Broadcast   packets :               0
  IP options  packets :               0
  TTL expired packets :               0
  Fragmented  packets :               0

This table describes the significant fields shown in the display.

Table 16. show cef ipv6 exceptions Command Field Descriptions
Field	Description
TTL err	Packets sent to software for processing because the packet header of the IPv6 prefix had a TTL⁷ error.
Link-local dst addr	Packets sent to the software for processing because the destination address of the IPv6 prefix is link local.
Hop-by-Hop header	Packets sent to the software for processing because the IPv6 packet has a hop-by-hop header.
PLU entry set to punt	Packets sent to software for processing because the IPv6 prefix is set to punt.
Packet too big	Packets sent to the software for processing because the packet size exceeded the MTU⁸.
Med priority punt	Field used internally for troubleshooting.

⁷ TTL = time to live

⁸ MTU = maximum transmission unit

show cef ipv6 hardware

To display Cisco Express Forwarding (CEF) IPv6 hardware status and configuration information, use the show cef ipv6 hardware command in XR EXEC mode.

show cef [vrf vrf-name] ipv6 hardware {egress | [detail | location node-id]}

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
egress	Displays information from the egress packet switch exchange (PSE) file.
detail	(Optional) Displays full details.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output displays the full details from the show cef ipv6 hardware command:


RP/0/RP0/CPU0:router# show cef ipv6 hardware egress detail

::/0, version 0, proxy default, default route handler, drop adjacency, internal 0x1001011 0x0 (ptr 0x8d7d52dc) [1], 0x0 (0x8db46098), 0x0 (0x0)
Updated Nov 22 22:57:58.578
Prefix Len 0, traffic index 0, precedence n/a, priority 15
gateway array (0x8d87a098) reference count 1, flags 0x200, source default (12), 0 backups
[2 type 3 flags 0xa401 (0x8d9cf098) ext 0x0 (0x0)]
LW-LDI[type=3, refc=1, ptr=0x8db46098, sh-ldi=0x8d9cf098]
gateway array update type-time 1 Nov 22 22:57:58.578
LDI Update time Nov 22 22:57:58.595
LW-LDI-TS Nov 22 22:57:58.595
via ::/128, 3 dependencies, weight 0, class 0 [flags 0x0]
path-idx 0 NHID 0x0 [0x8cf1c218 0x0]
next hop ::/128
drop adjacency


Load distribution: 0 (refcount 2)

Hash OK Interface Address
0 Y Unknown drop 
::ffff:90.0.0.1/128, version 14, attached, receive
Updated Nov 25 15:28:03.318
Prefix Len 128
internal 0x1004141 (ptr 0x8d7d48b4) [1], 0x0 (0x8db462c8), 0x0 (0x0)
fe80::/10, version 0, receive
Updated Nov 22 22:57:58.608
Prefix Len 10
internal 0x1004001 (ptr 0x8d7d4cc4) [1], 0x0 (0x8db461e8), 0x0 (0x0)
ff02::/16, version 0, receive
Updated Nov 22 22:57:58.609
Prefix Len 16
internal 0x1004001 (ptr 0x8d7d4f14) [1], 0x0 (0x8db46140), 0x0 (0x0)

show cef ipv6 interface

To display IPv6 Cisco Express Forwarding (CEF)-related information for an interface, use the show cef ipv6 interface command in XR EXEC mode.

show cef [vrf vrf-name] ipv6 interface type interface-path-id [detail] [ location node-id]

Syntax Description

vrf

(Optional) Displays VPN routing and forwarding (VRF) instance information.

vrf-name

(Optional) Name of a VRF.

type

Interface type. For more information, use the question mark (?) online help function.

interface-path-id

Physical interface or virtual interface.

Note

Use the show interfaces command to see a list of all interfaces currently configured on the router.

For more information about the syntax for the router, use the question mark (?) online help function.

detail

(Optional) Displays detailed CEF information for all the interfaces on the node in which the command is issued.

location node-id

(Optional) Displays IPv4 CEF-related information for an interface. The node-id argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the show cef ipv6 interface command displays the CEF-related information for the interface on the route processor.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef ipv6 interface command:


RP/0/RP0/CPU0:router# show cef ipv6 interface

fib_show_interface
created item name: 1000/protocol/1/vrf/default/interface-info/1/
HundredGigE0/4/0/1 is down if_handle 0x02000170 if_type UNKNOWN caps 0(0x0)
     idb info 0x8cb3a020 flags 0x8001 ext 0x0
     Vrf Local Info (0x0)
  Interface last modified Dec 20, 2015 22:28:52, create
  Reference count 1       Next-Hop Count 0
  Protocol Reference count 0
  Protocol ipv6 not configured or enabled on this card
  Primary IPV6 local address NOT PRESENT
HundredGigE0/4/0/2 is down if_handle 0x02000178 if_type UNKNOWN caps 0(0x0)
     idb info 0x8cb39fa0 flags 0x8001 ext 0x0
     Vrf Local Info (0x0)
  Interface last modified Dec 20, 2015 22:28:52, create
  Reference count 1       Next-Hop Count 0
  Protocol Reference count 0
  Protocol ipv6 not configured or enabled on this card
  Primary IPV6 local address NOT PRESENT
HundredGigE0/4/0/3 is down if_handle 0x02000180 if_type UNKNOWN caps 0(0x0)
     idb info 0x8cb39f20 flags 0x8001 ext 0x0
     Vrf Local Info (0x0)
  Interface last modified Dec 20, 2015 22:28:52, create
  Reference count 1       Next-Hop Count 0
  Protocol Reference count 0
  Protocol ipv6 not configured or enabled on this card
  Primary IPV6 local address NOT PRESENT
HundredGigE0/4/0/4 is down if_handle 0x02000188 if_type UNKNOWN caps 0(0x0)
     idb info 0x8cb39ea0 flags 0x8001 ext 0x0
     Vrf Local Info (0x0)
  Interface last modified Dec 20, 2015 22:28:52, create
  Reference count 1       Next-Hop Count 0
  Protocol Reference count 0
  Protocol ipv6 not configured or enabled on this card
  Primary IPV6 local address NOT PRESENT
HundredGigE0/4/0/5 is down if_handle 0x02000190 if_type UNKNOWN caps 0(0x0)
     idb info 0x8cb39e20 flags 0x8001 ext 0x0
     Vrf Local Info (0x0)
  Interface last modified Dec 20, 2015 22:28:52, create
  Reference count 1       Next-Hop Count 0
  Protocol Reference count 0
  Protocol ipv6 not configured or enabled on this card
  Primary IPV6 local address NOT PRESENT
HundredGigE0/4/0/6 is up if_handle 0x02000198 if_type UNKNOWN caps 0(0x0)
     idb info 0x8cb39da0 flags 0x8001 ext 0x8de7fd98 flags 0x0
     Vrf Local Info (0x8df2e100)
  Interface last modified Dec 20, 2015 22:28:52, create
  Reference count 1       Next-Hop Count 2
  Protocol Reference count 1
  Protocol ipv6 not configured or enabled on this card
  Primary IPV6 local address 10:0:18::1/128

show cef ipv6 resource

To display the IPv6 nonrecursive prefix entries in the IPv6 Cisco Express Forwarding (CEF) table, use the show cef ipv6 resource command in XR EXEC mode.

show cef ipv6 resource [detail] [location node-id]

Syntax Description


detail	(Optional) Displays detailed information resources listed in the IPv6 CEF table.
location `node-id`	(Optional) Displays the IPv6 resource entries in the IPv6 CEF table for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the output displays the IPv6 CEF nonrecursive routes for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv6 resource command:


RP/0/RP0/CPU0:router# show cef ipv6 resource

CEF resource availability summary state: GREEN
  ipv4 shared memory resource: GREEN
  ipv6 shared memory resource: GREEN
  mpls shared memory resource: GREEN
  common shared memory resource: GREEN
  TABLE hardware resource: GREEN
  LEAF hardware resource: GREEN
  LOADINFO hardware resource: GREEN
  NHINFO hardware resource: GREEN
  LABEL_INFO hardware resource: GREEN
  IDB hardware resource: GREEN
  FRR_NHINFO hardware resource: GREEN
  LDSH_ARRAY hardware resource: GREEN
  RSRC_MON hardware resource: GREEN

show cef ipv6 summary

To display a summary of the IPv6 Cisco Express Forwarding (CEF) table, use the show cef ipv6 summary command in XR EXEC mode.

show cef [vrf vrf-name] ipv6 summary [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
location `node-id`	(Optional) Displays a summary of the IPv6 CEF table for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command displays a summary of the IPv6 CEF table for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

The following is sample output from the show cef ipv6 summary command:


RP/0/RP0/CPU0:router# show cef ipv6 summary

IP CEF with switching (Table Version 0)

  Load balancing: L3
  Tableid 0xe0800000, Vrfid 0x60000000, Vrid 0x20000000, Flags 0x301
  Vrfname default, Refcount 12
  4 routes, 0 reresolve, 0 unresolved (0 old, 0 new), 288 bytes
  0 load sharing elements, 0 bytes, 0 references
  0 shared load sharing elements, 0 bytes
  0 exclusive load sharing elements, 0 bytes
  0 CEF route update drops, 0 revisions of existing leaves
  Resolution Timer: 15s
  0 prefixes modified in place
  0 deleted stale prefixes
  0 prefixes with label imposition, 0 prefixes with label information
Adjacency Table has 44 adjacencies
  1 incomplete adjacency

This table describes the significant fields shown in the display.

Table 17. show cef ipv6 summary Command Field Descriptions
Field	Description
Load balancing	Current load-balancing mode. The default value is L3.
Table Version	Version of the CEF table.
routes	Total number of routes.
unresolved (x old, x new)	Number of routes not yet resolved.
load sharing elements	Total number of internal load-sharing data structures.
bytes	Total memory used by internal load sharing data structures.
references	Total reference count of all internal load sharing data structures.
CEF resets	Number of CEF table resets.
revisions of existing leaves	Number of updates to existing prefixes.
Exponential (currently xs, peak xs)	Currently not used.
prefixes modified in place	Prefixes modified in place.
Router ID	Router identification.
Adjacency Table has x adjacencies	Total number of adjacencies.
x incomplete adjacency	Total number of incomplete adjacencies.

show cef ipv6 unresolved

To display the unresolved routes in the IPv6 Cisco Express Forwarding (CEF) table, use the show cef ipv6 unresolved command in XR EXEC mode.

show cef [vrf vrf-name] ipv6 unresolved [detail] [hardware {egress}] [location node-id]

Syntax Description


vrf	(Optional) Displays VPN routing and forwarding (VRF) instance information.
`vrf-name`	(Optional) Name of a VRF.
detail	(Optional) Displays full details.
hardware	(Optional) Displays Cisco Express Forwarding (CEF) IPv6 hardware status and configuration information.
egress	Displays information from the egress packet switch exchange (PSE) file.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, this command displays the unresolved routes for the node on which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

This following is sample output from show cef ipv6 unresolved command when an unresolved route is detected:


RP/0/RP0/CPU0:router# show cef ipv6 unresolved

9999::/64
  unresolved

This table describes the significant fields shown in the display.

Table 18. show cef ipv6 unresolved Command Field Descriptions
Field	Description
xxxx::/xx	Detected unresolved route.

show cef mpls adjacency

To display the Multiprotocol Label Switching (MPLS) adjacency table, use the show cef mpls adjacency command in XR EXEC mode.

Syntax Description

interface-type

(Optional) Interface type. For more information, use the question mark (?) online help function.

interface- path-id

(Optional) Either a physical interface instance or a virtual interface instance:

Physical interface instance. Naming notation is rack/slot/module/port and a slash mark between values is required as part of the notation.

rack: Chassis number of the rack.
slot: Physical slot number of the line card.
module: Module number. A physical layer interface module (PLIM) is always 0.
port: Physical port number of the interface.

Note

In references to a Management Ethernet interface located on a route processor card, the physical slot number is alphanumeric (RSP0) and the module is CPU0. Example: interface MgmtEth0/RSP0 /CPU0/0.

Virtual interface instance. Number range varies depending on interface type.

For more information about the syntax for the router, use the question mark (?) online help function.

detail

(Optional) Displays full details.

discard

(Optional) Displays the discard adjacency information.

drop

(Optional) Displays the drop adjacency information.

glean

(Optional) Displays the glean adjacency information.

null

(Optional) Displays the null adjacency information.

punt

(Optional) Displays the punt adjacency information.

remote

(Optional) Displays the remote adjacency information.

location node-id

(Optional) Displays detailed CEF information for the designated node. The node-id argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the show cef mpls adjacency command displays the MPLS adjacency table for the node in which the command is issued.

Task ID


Task ID	Operations
cef	read

Examples

This following is sample output from show cef mpls adjacency command:


RP/0/RP0/CPU0:router# sh cef mpls adjacency inter

Display protocol is mpls
Interface    Address                                         Type   Refcount

BE1906       Prefix: 10.0.86.1/32                            local   7
             Adjacency: PT:0x8cba28d0 10.0.86.1/32
             Interface: BE1906
             NHID: 0x0
             MAC: e6.48.5c.10.b4.8e.e6.07.2b.8d.34.88.88.47
             Interface Type: 0x1c, Base Flags: 0x1 (0x8d10f620)
             Nhinfo PT: 0x8d10f620, Idb PT: 0x8ca57320, If Handle:
0x8000174
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 21 03:56:49.977


BE1904       Prefix: 10.0.85.1/32                            local   7
             Adjacency: PT:0x8cba3c78 10.0.85.1/32
             Interface: BE1904
             NHID: 0x0
             MAC: e6.48.5c.10.b4.86.e6.07.2b.8d.34.89.88.47
             Interface Type: 0x1c, Base Flags: 0x1 (0x8d10f1a0)
             Nhinfo PT: 0x8d10f1a0, Idb PT: 0x8ca572a0, If Handle:
0x800016c
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 21 03:57:25.360

show cef mpls adjacency hardware

To display the Multiprotocol Label Switching (MPLS) adjacency hardware status and configuration information, use the show cef mpls adjacency hardware command in XR EXEC mode.

show cef mpls adjacency hardware {egress} [detail | discard | drop | glean | location node-id | null | punt | remote]

Syntax Description


egress	Displays information from the egress packet switch exchange (PSE) file.
detail	(Optional) Displays full details.
discard	(Optional) Displays the discard adjacency information.
drop	(Optional) Displays the drop adjacency information.
glean	(Optional) Displays the glean adjacency information.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.
null	(Optional) Displays the null adjacency information.
punt	(Optional) Displays the punt adjacency information.
remote	(Optional) Displays the remote adjacency information.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

This following is sample output from show cef mpls adjacency hardware command:


RP/0/RP0/CPU0:router# sh cef mpls adjacency inter

Display protocol is mpls
Interface    Address                                         Type   Refcount

BE1906       Prefix: 10.0.86.1/32                            local   7
             Adjacency: PT:0x8cba28d0 10.0.86.1/32
             Interface: BE1906
             NHID: 0x0
             MAC: e6.48.5c.10.b4.8e.e6.07.2b.8d.34.88.88.47
             Interface Type: 0x1c, Base Flags: 0x1 (0x8d10f620)
             Nhinfo PT: 0x8d10f620, Idb PT: 0x8ca57320, If Handle:
0x8000174
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 21 03:56:49.977


BE1904       Prefix: 10.0.85.1/32                            local   7
             Adjacency: PT:0x8cba3c78 10.0.85.1/32
             Interface: BE1904
             NHID: 0x0
             MAC: e6.48.5c.10.b4.86.e6.07.2b.8d.34.89.88.47
             Interface Type: 0x1c, Base Flags: 0x1 (0x8d10f1a0)
             Nhinfo PT: 0x8d10f1a0, Idb PT: 0x8ca572a0, If Handle:
0x800016c
no dependent adj
             Ancestor If Handle: 0x0
 Update time Dec 21 03:57:25.360

show cef mpls drops

To display Multiprotocol Label Switching (MPLS) drop counters for packets that belong to a segment routing (SR) network, use the show cef mpls drops command in XR EXEC mode.

show cef mpls drops [location {node-id | all}]

Syntax Description


location `node-id`	(Optional) Displays detailed Cisco Express Forwarding (CEF) information for the designated node. The `node-id` argument is entered in the `rack/slot/module` notation.
all	(Optional) Displays all locations.

Command Default

No default behavior or values

Command History


Release	Modification
Release 6.5.1	This command was introduced.

Usage Guidelines

Use this command to display the SR MPLS drop counters.

The incoming top MPLS label is inspected. If the label belongs to the Segment Routing Local Block (SRLB) or the Segment Routing Global Block (SRGB), an MPLS SR drop counter is incremented for unknown label value.

Note

The NCS 5500 routerNCS 540 router does not support the TTL expiry counter. The SR MPLS TTL expired packets counter is always 0.

Note

The drop counters will increment for manually allocated adjacency SIDs and prefix SIDs only. They will not increment for dynamically allocated adjacency SIDs.

Task ID


Task ID	Operation
cef	read

Examples

This following is sample output from show cef mpls drops command:


RP/0/RP0/CPU0:router# show cef mpls drops location 0/0/CPU0
Sat Jun  9 03:49:27.100 IST
CEF Drop Statistics
Node: 0/0/CPU0
  SR MPLS unreachable packets :               100
  SR MPLS TTL expired packets :               0

show cef mpls interface

To display the Multiprotocol Label Switching (MPLS) Cisco Express Forwarding (CEF)-related information for an interface, use the show cef mpls interface command in XR EXEC mode.

show cef mpls interface type interface-path-id [detail] [location node-id]

Syntax Description

type

Interface type. For more information, use the question mark (?) online help function.

in terface-path-id

Either a physical interface instance or a virtual interface instance as follows:

Physical interface instance. Naming notation is rack/slot/module/port and a slash between values is required as part of the notation.

rack: Chassis number of the rack.
slot: Physical slot number of the modular services card or line card.
module: Module number. A physical layer interface module (PLIM) is always 0.
port: Physical port number of the interface.

Note

In references to a Management Ethernet interface located on a route processor card, the physical slot number is alphanumeric ( RSP0 ) and the module is CPU0. Example: interface MgmtEth0/ RSP0

Virtual interface instance. Number range varies depending on interface type.

For more information about the syntax for the router, use the question mark (?) online help function.

detail

(Optional) Displays detailed CEF information for all the interfaces on the node in which the command is issued.

location node-id

(Optional) Displays IPv4 CEF-related information for an interface. The node-id argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If you do not specify a node with the location keyword and node-id argument, the show cef mpls interface command displays the CEF-related information for the interface on the route processor.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef mpls interface command:


RP/0/RP0/CPU0:router#  sh cef mpls interface hundredGigE 0/0/0/0

fib_show_interface
mpls_v6_item_name: 0/protocol/2/vrf/default/interface-info/1/130
HundredGigE0/0/0/0 is up if_handle 0x00000130 if_type IFT_HUNDREDGE(0x49)
     idb info 0x894d5c20 flags 0x8001 ext 0x89c545b8 flags 0x50
     Vrf Local Info (0x0)
  Interface last modified Dec 20, 2015 12:00:36, create
  Reference count 1       Next-Hop Count 2
  Forwarding is enabled
  Protocol MTU 1500, TableId 0(0x882b5098)
  Protocol Reference count 2

show cef mpls unresolved

To display the Multiprotocol Label Switching (MPLS) unresolved routes, use the show cef mpls unresolved command in XR EXEC mode.

show cef mpls unresolved [detail] [location node-id]

Syntax Description


detail	(Optional) Displays detailed adjacency information, including Layer 2 information.
location `node-id`	(Optional) Displays detailed CEF information for the designated node. The `node-id` argument is entered in the rack/slot/module notation.

Command Default

No default behavior or values

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
cef	read

Examples

The following sample output is from the show cef mpls unresolved command:


RP/0/RP0/CPU0:router# show cef mpls unresolved

Label/EOS           Next Hop            Interface
20001/0
20001/1

This table describes the significant fields shown in the display.

Table 19. show cef mpls unresolved Command Field Descriptions
Field	Description
Label/EOS	MPLS forwarding label/End of Stack (EOS) bit.
Next Hop	Next hop of the prefix.
Interface	Interface associated with the prefix.

Bias-Free Language

Results

Chapter: Cisco Express Forwarding Commands

Cisco Express Forwarding Commands

cef adjacency route override rib

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

cef load-balancing

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Examples

Examples

Examples

Examples

Examples

clear cef ipv4 drops

Syntax Description

Command Default

Command History

Usage Guidelines

Task ID

Examples

clear cef ipv4 exceptions

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

clear cef ipv6 drops

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

clear cef ipv6 exceptions

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

hw-module fib bgppa stats-mode

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

hw-module profile load-balance algorithm

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

pppoe payload

Syntax Description

Command Modes

Command History

Usage Guidelines

Task ID

Examples