Catalyst Supervisor Engine 32 PISA IOS Command Reference, 12.2ZY

clear cable-diagnostics tdr

To clear a specific interface or clear all interfaces that support time domain reflectometery (TDR), use the clear cable-diagnostics tdr command.

clear cable-diagnostics tdr [interface interface interface-number]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

See the Release Notes for Cisco IOS Release 12.2 SX on the Catalyst 6500 for the list of modules that support TDR.

Examples

This example shows how to clear a specific interface:

Router# clear cable-diagnostics tdr interface gigabitethernet 4/1 

Router#

Related Commands

clear catalyst6000 traffic-meter

To clear the traffic meter counters, use the clear catalyst6000 traffic-meter command.

clear catalyst6000 traffic-meter

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the traffic meter counters:

Router# clear catalyst6000 traffic-meter

Router#

clear counters

To clear the interface counters, use the clear counters command.

clear counters [{interface interface-number} | {null interface-number} | {port-channel number} | {vlan vlan-id}]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

This command clears all the current interface counters from the interface unless you specify the interface.

Note This command does not clear counters that are retrieved using SNMP but only those counters that appear when you enter the show queueing interface command.

The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13 and valid values for the port number are from 1 to 48.

Examples

This example shows how to clear all interface counters:

Router# clear counters

Clear "show interface" counters on all interfaces [confirm]y

Router# 

This example shows how to clear counters on a specific interface:

Router# clear counters vlan 200

Clear "show interface" counters on this interface [confirm]y

Router# 

Related Commands

clear fm netflow counters

To clear the NetFlow counters, use the clear fm netflow counters command.

clear fm netflow counters

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the NetFlow counters:

Router# clear fm netflow counters

Router#

clear interface gigabitethernet

To clear the hardware logic on a Gigabit Ethernet IEEE 802.3z interface, use the clear interface gigabitethernet command.

clear interface gigabitethernet number

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

The number argument designates the module and port number. Valid values for number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13 and valid values for the port number are from 1 to 48.

Examples

This example shows how to clear the hardware logic on a Gigabit Ethernet IEEE 802.3z interface:

Router# clear interface gigabitethernet 5

Router# 

Related Commands

clear interface vlan

To clear the hardware logic on a VLAN, use the clear interface vlan command.

clear interface vlan vlan-id

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the hardware logic on a specific VLAN:

Router# clear interface vlan 5

Router#

Related Commands

clear ip access-template

To clear statistical information on the access list, use the clear ip access-template command.

clear ip access-template access-list

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear statistical information on the access list:

Router# clear ip access-template 201

Router#

Related Commands

clear ip arp inspection log

To clear the status of the log buffer, use the clear ip arp inspection log command.

clear ip arp inspection log

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the contents of the log buffer:

Router# clear ip arp inspection log

Router# 

Related Commands

clear ip arp inspection statistics

To clear the dynamic ARP inspection statistics, use the clear ip arp inspection statistics command.

clear ip arp inspection statistics [vlan vlan-range]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the DAI statistics from VLAN 1:

Router# clear ip arp inspection statistics vlan 1

Router#

Related Commands

clear ip auth-proxy watch-list

To delete a single watch-list entry or all watch-list entries, use the clear ip auth-proxy watch-list command.

clear ip auth-proxy watch-list {ip-addr | *}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC.

Command History

Usage Guidelines

If you see entries in the watch list that you suspect are not valid, you can enter the clear ip auth-proxy watch-list command to clear them manually instead of waiting for the watch list to expire.

Examples

This example shows how to delete a single watch-list entry:

Router# clear ip auth-proxy watch-list 12.0.0.2

Router# 

This example shows how to delete all watch-list entries:

Router# clear ip auth-proxy watch-list *

Router# 

Related Commands

clear ip cef epoch full

To begin a new epoch and increment the epoch number for all tables (including the adjacency table), use the clear ip cef epoch full command.

clear ip cef epoch full

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

Use the clear ip cef epoch full command when you want to rebuild a table. This command allows old and new table entries to be distinguished within the same data structure and allows you to retain the old CEF database table while constructing the new table.

These show commands display epoch information:

•show ip cef summary—Displays the table epoch for a specific FIB table.

•show ip cef detail—Displays the epoch value for each entry of a specific FIB table.

•show adjacency summary—Displays the adjacency table epoch.

•show adjacency detail—Displays the epoch value for each entry of the adjacency table.

Examples

This example shows the output before and after you clear the epoch table and increment the epoch number:

Router# show ip cef epoch

CEF epoch information:

Table:Default-table

  Table epoch:2 (164 entries at this epoch)

Adjacency table

  Table epoch:1 (33 entries at this epoch)

Router# clear ip cef epoch full

Router# show ip cef epoch

CEF epoch information:

Table:Default-table

  Table epoch:3 (164 entries at this epoch)

Adjacency table

  Table epoch:2 (33 entries at this epoch)

Router# 

Related Commands

clear ip cef inconsistency

To clear the statistics and records for the CEF-consistency checker, use the clear ip cef inconsistency command.

clear ip cef inconsistency

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

This command clears the statistics and records that accumulate when you enable the ip cef table consistency-check command.

Examples

This example shows how to clear all statistics and records for the CEF-consistency checker:

Router# clear ip cef inconsistency

Router# 

Related Commands

clear ip dhcp snooping

To clear the DHCP-snooping table without disabling DHCP snooping, use the clear ip dhcp snooping command.

clear ip dhcp snooping {binding | database | statistics}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the DHCP-snooping binding-entry table:

Router# clear ip dhcp snooping binding

Router# 

This example shows how to clear the DHCP-snooping database table:

Router# clear ip dhcp snooping database

Router# 

This example shows how to clear the DHCP-snooping statisics:

Router# clear ip dhcp snooping statistics

Router# 

Related Commands

clear ip flow stats

To clear the NetFlow-switching statistics, use the clear ip flow stats command.

clear ip flow stats

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

The show ip cache flow command displays the NetFlow-switching statistics.

Examples

This example shows how to clear the NetFlow-switching statistics:

Router# clear ip flow stats

Router# 

Related Commands

clear ip igmp group

To delete the entries for the IGMP-group cache, use the clear ip igmp group command.

clear ip igmp [vrf vrf-name] group [{interface interface-number} | {group-name | group-address} {loopback interface-number} | {null interface-number} | {port-channel number} | {vlan vlan-id}]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

The IGMP cache contains a list of hosts on the directly connected LAN. If the switch has joined a group, that group is also listed in the cache.

To delete all entries from the IGMP cache, specify the clear ip igmp group command with no arguments.

The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13 and valid values for the port number are from 1 to 48.

Examples

This example shows how to clear the entries for a specific group from the IGMP cache:

Router# clear ip igmp group 224.0.255.1

Router# 

This example shows how to clear the IGMP-group cache entries from a specific interface of the IGMP-group cache:

Router# clear ip igmp group gigabitethernet 2/2

Router# 

Related Commands

clear ip igmp snooping statistics

To clear the IGMP-snooping statistics, use the clear ip igmp snooping statistics command.

clear ip igmp snooping statistics [vlan vlan-id]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

If you do not enter a VLAN, the IGMP-snooping statistics for all VLANs is cleared.

Examples

This example shows how to clear the IGMP-snooping statistics for all VLANs:

Router# clear ip igmp snooping statistics

Router# 

This example shows how to clear the IGMP-snooping statistics for a specific VLAN:

Router# clear ip igmp snooping statistics vlan 300

Router# 

Related Commands

clear ip mroute

To delete entries from the IP multicast routing table, use the clear ip mroute command.

clear ip mroute [vrf vrf-name] {* | group} [source]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

The group argument specifies one of the following:

•Name of the multicast group as defined in the DNS hosts table or with the ip host command.

•IP address of the multicast group in four-part, dotted notation.

If you specify a group name or address, you can also enter the source argument to specify a name or address of a multicast source that is sending to the group. A source does not need to be a member of the group.

Examples

This example shows how to delete all entries from the IP multicast routing table:

Router# clear ip mroute *

Router# 

This example shows how to delete all sources on the 228.3.0.0 subnet that are sending to the multicast group 224.2.205.42 from the IP multicast routing table. This example shows how to delete all sources on network 228.3, not individual sources:

Router# clear ip mroute 224.2.205.42 228.3.0.0

Router# 

Related Commands

clear ip msdp peer

To clear the TCP connection to the specified MSDP peer, use the clear ip msdp peer command.

clear ip msdp [vrf vrf-name] peer {peer-address | peer-name}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

This command closes the TCP connection to the peer, resets all the MSDP peer statistics, and clears the input and output queues to and from the MSDP peer.

Examples

This example shows how to clear the TCP connection to the MSDP peer at 224.15.9.8:

Router# clear ip msdp peer 224.15.9.8

Router#

Related Commands

clear ip msdp sa-cache

To clear MSDP source active cache entries, use the clear ip msdp sa-cache command.

clear ip msdp [vrf vrf-name] sa-cache [group-address | group-name]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

In order to have any source active entries in the cache to clear, you must enable source active caching by entering the ip msdp cache-sa-state command.

If no multicast group is identified by group address or name, all source active cache entries are cleared.

Examples

This example shows how to clear the source active entries for the multicast group 224.5.6.7 from the cache:

Router# clear ip msdp sa-cache 224.5.6.7

Router# 

Related Commands

clear ip msdp statistics

To clear statistics counters for one or all of the MSDP peers without resetting the sessions, use the clear ip msdp statistics command.

clear ip msdp [vrf vrf-name] statistics [peer-address | peer-name]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the counters for the peer named sanjose:

Router# clear ip msdp statistics sanjose

Router# 

Related Commands

clear ip pim auto-rp

To delete entries from the Auto-RP cache, use the clear ip pim auto-rp command.

clear ip pim [vrf vrf-name] auto-rp rp-address

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

When you enter the rp-address argument, only the entries related to the rendezvous point at this address are cleared. If you omit this argument, the entire Auto-RP cache is cleared.

Examples

This example shows how to delete all entries from the Auto-RP cache:

Router# clear ip pim auto-rp 224.5.6.7

Router#

Related Commands

clear ip pim snooping statistics

To delete the IP PIM-snooping global statistics, use the clear ip pim snooping statistics command.

clear ip pim snooping statistics

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the IP PIM statistics:

Router# clear ip pim snooping statistics

Router# 

Related Commands

clear ip pim snooping vlan

To delete the IP PIM-snooping entries on a specific VLAN, use the clear ip pim snooping vlan command.

clear ip pim snooping vlan vlan-id mac-address gda-address

clear ip pim snooping vlan vlan-id mroute {* | {group-addr src-addr} {{downstream-neighbor ip-addr} | {upstream-neighbor ip-addr}}}

clear ip pim snooping vlan vlan-id neighbor {* | ip-addr}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the IP PIM statistics on a specific VLAN:

Router# clear ip pim snooping vlan 25 statistics 

Router# 

Related Commands

clear lacp counters

To clear the statistics for all interfaces belonging to a specific channel group, use the clear lacp counters command.

clear lacp [channel-group] counters

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

If you do not specify a channel-group, all channel groups are cleared.

If you enter this command for a channel group that contains members in PAgP mode, the command is ignored.

Examples

This example shows how to clear the statistics for a specific group:

Router# clear lacp 1 counters

Router# 

Related Commands

clear logging ip access-list cache

To clear all the entries from the OAL cache and send them to the syslog, use the clear logging ip access-list cache command.

clear logging ip access-list cache

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear all the entries from the OAL cache and send them to the syslog:

Router# clear logging ip access-list cache

Router#

Related Commands

clear mac-address-table dynamic

To clear the dynamic address entries from the MAC-address table in Layer 2, use the clear mac-address-table dynamic command.

clear mac-address-table dynamic [{address mac-addr} | {interface interface interface-number} | {protocol {assigned | ip | ipx | other}}] [vlan vlan-id]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

Enter the clear mac-address-table dynamic command with no arguments to remove all dynamic entries from the table.

The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13 and valid values for the port number are from 1 to 48.

Examples

This example shows how to clear all dynamic Layer 2 entries for a specific interface (e2/1) and protocol type (IPX):

Router# clear mac-address-table dynamic interface e2/1 protocol ipx

Router# 

Related Commands

clear mls acl counters

To clear the MLS ACL counters, use the clear mls acl counters command.

clear mls acl counters {all | {interface interface interface-number} [{loopback interface-number} | {null interface-number} | {port-channel number} | {vlan vlan-id}}]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

If you enter the clear mls acl counters all, all the MLS ACL counters for all the modules and the supervisor engines are cleared.

The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13 and valid values for the port number are from 1 to 48.

Examples

This example shows how to reset the MLS ACL counters in all interfaces:

Router# clear mls acl counters all

Router#

Related Commands

clear mls cef ip accounting per-prefix

To clear information about the IP per-prefix accounting statistics, use the clear mls cef ip accounting per-prefix command.

clear mls cef ip accounting per-prefix {all | {prefix mask [instance]}}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear all information about the per-prefix accounting statistics:

Router# clear mls cef ip accounting per-prefix all

Router# 

clear mls cef ipv6 accounting per-prefix

To clear information about the IPv6 per-prefix accounting statistics, use the clear mls cef ipv6 accounting per-prefix command.

clear mls cef ipv6 accounting per-prefix {all | {ipv6-address/mask [instance]}}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

When entering the ipv6-address/mask arguments, use this format, X:X:X:X::X/mask, where the valid values for mask are from 0 to 128.

Examples

This example shows how to clear all information about the per-prefix accounting statistics:

Router# clear mls cef ipv6 accounting per-prefix all

Router# 

clear mls ip multicast bidir-rpcache

To clear all bidirectional (Bider) rendezvous-point cache entries, use the clear mls ip multicast bidir-rpcache command.

clear mls ip multicast bidir-rpcache

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to reset the Bidir counters:

Router# clear mls ip multicast bidir-rpcache

Router#

Related Commands

clear mls ip multicast group

To delete an IP multicast group, use the clear mls ip multicast group command.

clear mls ip multicast group {ip-name | group-address}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to delete an IP multicast group:

Router# clear mls ip multicast group 224.0.255.1

Router#

Related Commands

clear mls ip multicast statistics

To reset the IP-multicast statistics counters, use the clear mls ip multicast statistics command.

clear mls ip multicast statistics

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to reset the IP-multicast statistics counters:

Router# clear mls ip multicast statistics

Router#

Related Commands

clear mls nde flow counters

To clear the NDE counters, use the clear mls nde flow counters command.

clear mls nde flow counters

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to reset the NDE counters:

Router# clear mls nde flow counters

Router#

Related Commands

clear mls netflow

To clear the MLS NetFlow-shortcut entries, use the clear mls netflow command.

clear mls netflow ip [destination ip-addr [source ip-addr-spec]] [dynamic | {sw-installed [non-static | static]}] [module mod]

clear mls netflow ipv6 [destination ipv6-addr[/ipv6-prefix] [source ipv6-addr[/ipv6-prefix]]] [flow {tcp | udp}] [{destination | source} port-num] [dynamic | {sw-installed [non-static | static]}] [module mod]

clear mls netflow mpls [top-label entry] [dynamic | {sw-installed [non-static | static]}] [module mod]

clear mls ipx [[module mod] [destination ipx-network [ipx-node]] [source ipx-network] [macs mac-addr] [macd mac-addr] [interface interface-num] | [all]]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

When entering the IPX address syntax, use the following format:

•IPX network address—1..FFFFFFFE

•IPX node address—x.x.x where x is 0..FFFF

•IPX address—ipx_net.ipx_node (for example, 3.0034.1245.AB45, A43.0000.0000.0001)

Entering any combination of input parameters narrows the search of entries to be cleared. The destination or source port-num keyword and argument should be specified as one of the following: telnet, FTP, WWW, SMTP, X, or DNS.

Up to 16 routers can be included explicitly as MLS-RPs.

Use the following syntax to specify an IP subnet address:

•ip-subnet-addr or ipv6-subnet-addr—Short subnet address format. The trailing decimal number 00 in an IP or IPv6 address YY.YY.YY.00 specifies the boundary for an IP or IPv6 subnet address. For example, 172.22.36.00 indicates a 24-bit subnet address (subnet mask 172.22.36.00/255.255.255.0), and 173.24.00.00 indicates a 16-bit subnet address (subnet mask 173.24.00.00/255.255.0.0). However, this format can identify only a subnet address of 8, 16, or 24 bits.

•ip-addr/subnet-mask or ipv6-addr/subnet-mask—Long subnet address format. For example, 172.22.252.00/255.255.252.00 indicates a 22-bit subnet address. This format can specify a subnet address of any bit number. To provide more flexibility, the ip-addr or ipv6-addr is a full host address, such as 172.22.253.1/255.255.252.00.

•ip-addr/maskbits or ipv6-addr/maskbits—Simplified long subnet address format. The mask bits specify the number of bits of the network masks. For example, 172.22.252.00/22 indicates a 22-bit subnet address. The ip-addr or ipv6-addr is a full host address, such as 193.22.253.1/22, which has the same subnet address as the ip-subnet-addr or ipv6-subnet-addr.

If you do not use the all keyword, you must specify at least one of the other four keywords (source, destination, flow, or interface) and its arguments.

A 0 value for the destination or source port-num keyword and argument clears all entries. Unspecified options are treated as wildcards, and all entries are cleared.

Examples

This example shows how to clear all the entries that are associated with a specific module (2) and that have a specific destination IP address (173.11.50.89):

Router# clear mls netflow ip destination 173.11.50.89 module 2

Router#

This example shows how to clear the IPv6 software-installed entries:

Router# clear mls netflow ipv6

Router#

This example shows how to clear the statistical information:

Router# clear mls netflow dynamic

Router#

Related Commands

clear mls qos

To clear the MLS aggregate-QoS statistics, use the clear mls qos command.

clear mls qos [{ip | ipx | mac | mpls | ipv6 | arp} [{interface interface-number} | {null interface-number} | {port-channel number} | {vlan vlan-id}]]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

Note Entering the clear mls qos command affects the policing token bucket counters and might allow traffic to be forwarded that would otherwise be policed.

The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 1 to 13 and valid values for the port number are from 1 to 48.

If you enter the clear mls qos command with no arguments, the global and per-interface aggregate QoS counters for all protocols are cleared.

If you do not enter an interface type, the protocol aggregate-QoS counters for all interfaces are cleared.

Examples

This example shows how to clear the global and per-interface aggregate-QoS counters for all protocols:

Router# clear mls qos

Router# 

This example shows how to clear the specific protocol aggregate-QoS counters for all interfaces:

Router# clear mls qos ip 

Router# 

Related Commands

clear mls statistics

To reset the MLS statistics counters, use the clear mls statistics command.

clear mls statistics [module num]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

This command replaces the clear mls stats command.

Examples

This example shows how to reset the MLS statistics counters for all modules:

Router# clear mls statistics

Router# 

This example shows how to reset the MLS statistics counters for a specific module:

Router# clear mls statistics module 5

Router# 

Related Commands

clear mls stats

To clear the MLS statistics, use the clear mls stats command.

clear mls stats

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the MLS statistics for all modules:

Router# clear mls stats

Router# 

Related Commands

clear pagp

To clear the port-channel information, use the clear pagp command.

clear pagp {group-number | counters}

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the port-channel information for a specific group:

Router# clear pagp 324

Router#

This example shows how to clear the port-channel traffic filters:

Router# clear pagp counters

Router#

Related Commands

clear platform netint

To clear the interrupt-throttling counters for the platform, use the clear platform netint command.

clear platform netint

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Examples

This example shows how to clear the interrupt-throttling counters for the platform:

Router# clear platform netint

Router#

Related Commands

clear platform pisa ixp counters

To clear Supervisor Engine 32 PISA-specific counters for the platform, use the clear platform pisa ixp command.

clear platform pisa ixp counters counter

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The valid values for the counter argument are as follows:

•all counters—Clears all Supervisor Engine 32 PISA-specific counters.

•fpm counters—Clears the flexible packet matching (FPM) counters.

•me num counters—Clears the microengine information; valid values are from 0 to 15.

•mqc counters—Clears the modular quality of service (QoS) CLI counters.

•mtacl counters—Clears the MTrie ACL counters.

•nbar counters—Clears the network-based application recognition (NBAR) counters.

•rx counters—Clears the receive engine counters.

•tx counters—Clears the transmit engine counters.

•urlf counters—Clears the URL filtering counters.

•vfr counters—Clears the virtual fragmentation and reassembly (VFR) counters.

Examples

This example shows how to clear the flexible packet matching (FPM) counters for the platform:

Router# clear platform pisa ixp counters fpm

FPM Statistics cleared

Router#

Related Commands

clear platform pisa np counters

To clear Supervisor Engine 32 PISA-specific counters for the platform, use the clear platform pisa np counters command.

clear platform pisa np counter counters

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The valid values for the counter argument are as follows:

•all—Clears all Supervisor Engine 32 PISA-specific counters.

•fpm—Clears the flexible packet matching (FPM) counters.

•me num—Clears the microengine information; valid values are from 0 to 15.

•mqc—Clears the modular quality of service (QoS) CLI counters.

•mtacl—Clears the MTrie ACL counters.

•nbar—Clears the network-based application recognition (NBAR) counters.

•rx—Clears the receive engine counters.

•tagging—Clears the protocol tagging counters.

•tx—Clears the transmit engine counters.

•urlf—Clears the URL filtering counters.

•vfr—Clears the virtual fragmentation and reassembly (VFR) counters.

Examples

This example shows how to clear all Supervisor Engine 32 PISA-specific counters for the platform:

Router# clear platform pisa np all counters

RX Statistics cleared for ME: 0

TX Statistics cleared for ME: 1

NBAR Statistics cleared

URLF Statistics cleared

MQC Statistics cleared

ACL Statistics cleared

FPM Statistics cleared

VFR Statistics cleared

Protocol Tagging Statistics cleared

Stubs Statistics cleared for ME: 2 to 15

Router#

Related Commands

clear port-security

To delete configured secure MAC addresses and sticky MAC addresses from the MAC address table, use the clear port-security command.

clear port-security dynamic [{address mac-addr} | {interface interface-id}] [vlan vlan-id]

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

This command is supported on negotiated trunks only.

If you enter the clear port-security command without adding any keywords or arguments, the switch removes all the secure MAC addresses and sticky MAC addresses from the MAC address table.

If you enter the clear port-security dynamic interface interface-id command, all the secure MAC addresses and sticky MAC addresses on an interface are removed from the MAC address table.

You can verify that the information was deleted by entering the show port-security command.

Examples

This example shows how to remove a specific secure address from the MAC address table:

Router# clear port-security dynamic address 0008.0070.0007

Router# 

This example shows how to remove all the secure MAC addresses and sticky MAC addresses learned on a specific interface:

Router# clear port-security dynamic interface gigabitethernet0/1

Router# 

Related Commands

clear spanning-tree detected-protocol

To restart the protocol migration, use the clear spanning-tree detected-protocol command.

clear spanning-tree detected-protocol [interface interface interface-num]

Syntax Description

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Usage Guidelines

RSTP and MST have built-in compatibility mechanisms that allow them to interact properly with other versions of IEEE spanning tree or other regions. For example, a bridge running RSTP can send 802.1D BPDUs on one of its ports when it is connected to a legacy bridge. An MST bridge can detect that a port is at the boundary of a region when it receives a legacy BPDU or an MST BPDU that is associated with a different region. These mechanisms are not always able to revert to the most efficient mode. For example, an RSTP bridge that is designated for a legacy 802.1D stays in 802.1D mode even after the legacy bridge has been removed from the link. Similarly, an MST port assumes that it is a boundary port when the bridges to which it is connected have joined the same region. To force the MST port to renegotiate with the neighbors, enter the clear spanning-tree detected-protocol command.

The valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 2 to 13 and valid values for the port number are 1 to 48.

The number of valid values for port-channel number are a maximum of 64 values ranging from 1 to 256.

If you enter the clear spanning-tree detected-protocol command with no arguments, the command is applied to every port of the Catalyst 6500 series switch.

Examples

This example shows how to restart the protocol migration on a specific interface:

Router# clear spanning-tree detected-protocol fa1/1

Router# 

Related Commands

clear top counters interface report

To clear the TopN reports, use the clear top counters interface report command.

clear top counters interface report number

Syntax Description

Defaults

This command has no default settings.

Command Modes

EXEC

Command History

Usage Guidelines

This command is supported on Ethernet, Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet ports only. LAN ports on the OSMs are also supported.

The clear top interface report command clears all the completed reports. It does not clear the pending TopN reports. When you specify a report number, the TopN task is cleared regardless of its status.

Examples

This example shows how to clear all TopN tasks:

Router# clear top counters interface report 

04:00:06: %TOPN_COUNTERS-5-DELETED: TopN report 1 deleted by the console

04:00:06: %TOPN_COUNTERS-5-DELETED: TopN report 2 deleted by the console

04:00:06: %TOPN_COUNTERS-5-DELETED: TopN report 3 deleted by the console

04:00:06: %TOPN_COUNTERS-5-DELETED: TopN report 4 deleted by the console1/24/

Router#

This example shows the output if you attempt to clear a pending TopN task:

Router# clear top counters interface report 4 

04:52:12: %TOPN_COUNTERS-5-KILLED: TopN report 4 killed by the sattili onvty0 (9.10.69.9)

Router#

Related Commands

clear vlan counters

To clear the software-cached counter values to start from zero again for a specified VLAN or all existing VLANs, use the clear vlan counters command.

clear vlan [vlan-id] counters

Syntax Description

Defaults

This command has no default settings.

Command Modes

Privileged EXEC

Command History

Usage Guidelines

If you do not specify a vlan-id; the software-cached counter values for all existing VLANs are cleared.

Examples

Router# clear vlan 10 counters

Clear "show vlan" counters on this vlan [confirm]y

Router# 

Related Commands

clock

To configure the port clocking mode for the 1000BASE-T transceivers, use the clock command. To return to the default settings, use the no form of this command.

clock {auto | active [prefer] | passive [prefer]}

no clock

Syntax Description

Defaults

auto

Command Modes

Interface configuration

Command History

Usage Guidelines

This command is supported on the 1000BASE-T transceivers only.

If the clock mode of the near end of a link does not match the clock mode of the far end, the line protocol does not come up.

The active and passive clock status is determined during autonegotiation before the transmission link is established.

The clock command supports the following configurations:

•auto—Autonegotiates with the far end of the link but gives preference to the active-clock switch.

•active—Uses a local clock to determine transmitter-operation timing.

•passive—Recovers the clock from the received signal and uses the recovered clock to determine transmitter-operation timing.

•active prefer—Autonegotiates with the far end of the link but gives preference to the active-clock switch.

•passive prefer—Autonegotiates with the far end of the link but gives preference to the passive-clock switch.

Enter the show running-config interface command to display the current clock mode.

Enter the show interfaces command to display the clock mode that is negotiated by the firmware.

Examples

This example shows how to enable the active-clock operation:

Router(config-if)# clock active

Router(config-if)#

Related Commands

collect top counters interface

To list the TopN processes and specific TopN reports, use the collect top counters interface command.

collect top [number] counters interface interface-type [interval seconds] [sort-by sort-by-value]

Syntax Description

Defaults

The defaults are as follows:

•number is 20 physical ports.

•sort-by-value is util.

•seconds is 30 seconds.

•interface-type is all.

Command Modes

EXEC

Command History

Usage Guidelines

This command is supported on Ethernet, Fast Ethernet, Gigabit Ethernet and 10-Gigabit Ethernet ports only. LAN ports on the OSMs are also supported.

If you specify an interval of 0 seconds, the TopN report is generated based on the absolute counters value. You cannot specify the interval seconds keyword and argument when the sorting criteria is utilization because utilization can only be computed over an interval.

When you specify the layer-2 vlan-num, valid values are from 1 to 4094 and indicates the number of the Layer 2 interface.

Only a TopN task with a done status is allowed to display the report. If you try to view a report that is incomplete (pending), an appropriate message is displayed.

•Total number of in and out bytes.

•Total number of in and out packets.

•Total number of in and out broadcast packets.

•Total number of in and out multicast packets.

•Total number of in errors (Ethernet ports such as CRC, undersize packets (+Runt), oversize packets, fragmentation, and jabber).

•Total number of buffer-overflow errors including outlost packets; for example, these errors include transmit errors that are due to these buffer full and Ethernet ports: dmaTxOverflow and dmaTxFull.

When the TopN reports are ready, a syslog message is displayed that the TopN reports are available. You can use the show top interface report command to view the reports. You can display the TopN reports multiple times until you enter the clear top interface report command to clear the reports.

Use the clear top interface report command to clear the reports.

Examples

This example shows how to sort the TopN report based on the receive and transmit broadcast packets:

Router# collect top 40 counters interface all sort-by broadcast 

Router# 

This example shows how to sort the TopN report based on the receive and transmit broadcast packets and specify the TopN sampling interval:

Router# collect top 40 counters interface all sort-by broadcast interval 500

Router# 

Related Commands

control-plane

To enter control-plane configuration mode, which allows users to associate or modify attributes or parameters (such as a service policy) that are associated with the control plane of the device, use the control-plane command.

control-plane

Syntax Description

This command has no arguments or keywords.

Defaults

No control plane service policies are defined.

Command Modes

Global configuration

Command History

Usage Guidelines

Note You must set a policy action for every class. If you do not set a policy action for every class, the traffic skips the class that does not have a policy action and matches against the subsequent classes.

After you enter the control-plane command, you can define aggregate control plane services for your route processor. For example, you can associate a service policy with the control plane to police all traffic that is destined to the control plane.

Examples

These examples show how to configure trusted hosts with source addresses 10.1.1.1 and 10.1.1.2 to forward Telnet packets to the control plane without constraint, while allowing all remaining Telnet packets to be policed at the specified rate:

Router(config)# access-list 140 deny tcp host 10.1.1.1 any eq telnet 

! Allow 10.1.1.2 trusted host traffic. 

Router(config)# access-list 140 deny tcp host 10.1.1.2 any eq telnet 

! Rate limit all other Telnet traffic.

Router(config)# access-list 140 permit tcp any any eq telnet

! Define class-map "telnet-class."

Router(config)# class-map telnet-class 

Router(config-cmap)# match access-group 140

Router(config-cmap)# exit

Router(config)# policy-map control-plane

Router(config-pmap)# class telnet-class

Router(config-pmap-c)# police 80000 conform transmit exceed drop

Router(config-pmap-c)# exit

Router(config-pmap)# exit

! Define aggregate control plane service for the active Route Processor.

Router(config)# control-plane

Router(config-cp)# service-policy input control-plane-policy

Router(config-cp)# exit

Related Commands

copy /noverify

To disable the automatic image verification for the current copy operation, use the copy /noverify command.

copy /noverify source-url destination-url

Syntax Description

Defaults

Verification is done automatically after completion of a copy operation.

Command Modes

EXEC

Command History

Usage Guidelines

The exact format of the source and destination URLs varies according to the file or directory location. You may enter either an alias keyword for a particular file or an alias keyword for a file system type (not a file within a type).

Timesaver Aliases are used to cut down on the amount of typing that you need to perform. For example, it is easier to type copy run start (the abbreviated form of the copy running-config startup-config command) than it is to type copy system:r nvram:s (the abbreviated form of the copy system:running-config nvram:startup-config command). These aliases allow you to continue using some of the common commands that are used in previous versions of Cisco IOS software.

Table 2-3 shows two keyword shortcuts to URLs.

Table 2-4 through Table 2-6 list aliases by file system type. If you do not specify an alias, the system looks for a file in the current directory.

Table 2-4 lists the URL prefix aliases for special (opaque) file systems, Table 2-5 lists the URL prefix aliases for network file systems, and Table 2-6 lists the URL prefix aliases for local writable storage file systems.

You can enter on the command line all necessary source- and destination-URL information and the username and password to use, or you can enter the copy command and have the switch prompt you for any missing information.

If you enter information, choose one of the following three options: running-config, startup-config, or a file system alias (see Table 2-3 through Table 2-6). The location of a file system dictates the format of the source or destination URL.

The colon is required after the alias. However, earlier commands that do not require a colon remain supported but are unavailable in context-sensitive help.

The entire copying process may take several minutes and differs from protocol to protocol and from network to network.

In the alias syntax for ftp:, rcp:, and tftp:, the location is either an IP address or a hostname. The filename is specified for the directory that is used for file transfers.

Enter the file verify auto command to set up verification globally.

Examples

This example shows how to disable the automatic image verification for the current copy operation:

Router# copy /noverify tftp: sup-bootflash: 

................................................. 

[OK - 24301348 bytes]

24301348 bytes copied in 157.328 secs (154463 bytes/sec)

Router# 

Related Commands