- Read Me First
- Preparing for Broadband Access Aggregation
- Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions
- PPP for IPv6
- DHCP for IPv6 Broadband
- Providing Protocol Support for Broadband Access Aggregation of PPP over ATM Sessions
- Providing Connectivity Using ATM Routed Bridge Encapsulation over PVCs
- PPPoE Circuit-Id Tag Processing
- Configuring PPP over Ethernet Session Limit Support
- PPPoE Session Limit Local Override
- PPPoE QinQ Support
- PPP-Max-Payload and IWF PPPoE Tag Support
- PPPoE Session Limiting on Inner QinQ VLAN
- PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement
- Enabling PPPoE Relay Discovery and Service Selection Functionality
- Configuring Cisco Subscriber Service Switch Policies
- AAA Improvements for Broadband IPv6
- Per Session Queueing and Shaping for PPPoEoVLAN Using RADIUS
- 802.1P CoS Bit Set for PPP and PPPoE Control Frames
- PPP over Ethernet Client
- PPPoE Smart Server Selection
- Monitoring PPPoE Sessions with SNMP
- PPPoE on ATM
- PPPoE on Ethernet
- PPPoE over VLAN Enhancements Configuration Limit Removal and ATM Support
- ADSL Support in IPv6
- Broadband IPv6 Counter Support at LNS
- PPP IP Unique Address and Prefix Detection
- PPP IPv4 Address Conservation in Dual Stack Environments
- TR-069 Agent
- Broadband High Availability Stateful Switchover
- Broadband High Availability In-Service Software Upgrade
- Controlling Subscriber Bandwidth
- PPPoE Service Selection
- Disabling AC-name and AC-cookie Tags from PPPoE PADS
- Finding Feature Information
- Prerequisites for Broadband High Availability Stateful Switchover
- Restrictions for Broadband High Availability Stateful Switchover
- Information About Broadband High Availability Stateful Switchover
- How to Configure Broadband High Availability Stateful Switchover
- Configuration Examples for Broadband High Availability Stateful Switchover
- Additional References
- Feature Information for Broadband High Availability Stateful Switchover
Broadband High Availability Stateful Switchover
The Cisco IOS XE Broadband High Availability Stateful Switchover feature provides the capability for dual Route Processor systems to support stateful switchover of Point-to-Point Protocol over X (PPPoX, where X designates a family of encapsulating communications protocols such as PPP over Ethernet [PPPoE], PPP over ATM [PPPoA], PPPoEoA, PPPoEoVLAN implementing PPP) sessions, thus allowing applications and features to maintain a stateful state while system control and routing protocol execution is transferred between an active and a standby processor.
- Finding Feature Information
- Prerequisites for Broadband High Availability Stateful Switchover
- Restrictions for Broadband High Availability Stateful Switchover
- Information About Broadband High Availability Stateful Switchover
- How to Configure Broadband High Availability Stateful Switchover
- Configuration Examples for Broadband High Availability Stateful Switchover
- Additional References
- Feature Information for Broadband High Availability Stateful Switchover
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for Broadband High Availability Stateful Switchover
The stateful switchover (SSO) and nonstop forwarding (NSF) features must be enabled. For more information about SSO, see the "Stateful Switchover" module. For more information about NSF, see the "Configuring Nonstop Forwarding" module.
Restrictions for Broadband High Availability Stateful Switchover
SSO is supported only on High Availability (HA) network devices.
Information About Broadband High Availability Stateful Switchover
- Feature Design of Broadband High Availability Stateful Switchover
- Supported Broadband Aggregation Protocols
- Benefits of Broadband High Availability Stateful Switchover
Feature Design of Broadband High Availability Stateful Switchover
Prior to the implementation of the Broadband High Availability Stateful Switchover feature, unplanned control plane and dataplane failures resulted in service outages and network downtime for PPPoX sessions. Cisco HA features, including SSO, enable network protection by providing fast recovery from such failures. The Broadband High Availability Stateful Switchover feature eliminates a source of outages by providing for stateful switchover to a standby processor while continuing to forward traffic. SSO protects from hardware or software faults on an active Route Processor (RP) by synchronizing protocol and state information for supported features with a standby RP, ensuring no interruption of sessions or connections if a switchover occurs.
The SSO feature takes advantage of RP redundancy by establishing one of the RPs as the active processor, designating the other RP as the standby processor, and then synchronizing critical state information between them. Following an initial (bulk) synchronization between the two processors, SSO dynamically maintains RP state information between them. A switchover from the active to the standby processor occurs when the active RP fails, when it is removed from the networking device, or when it is manually taken down for maintenance. The standby RP then takes control and becomes the active RP, preserving the sessions and connections for the supported features. At this time, packet forwarding continues while route convergence is completed on the newly active RP. A critical component of SSO and Cisco HA technology is the cluster control manager (CCM) that manages session re-creation on the standby processor. The Broadband High Availability Stateful Switchover feature allows you to configure subscriber redundancy policies that tune the synchronization process. For more information, see the Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover.
The Broadband High Availability Stateful Switchover feature works with the Cisco NSF and SSO HA features, to maintain PPPoX sessions. NSF forwards network traffic and application state information so that user session information is maintained after a switchover.
For information about High Availability and stateful switchover, see the "High Availability Overview" chapter in the Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide .
Supported Broadband Aggregation Protocols
The Broadband High Availability Stateful Switchover feature set supports the broadband aggregation protocols described in the following sections:
SSO PPPoA
The Broadband High Availability Stateful Switchover feature delivers stateful switchover capability for PPP over ATM (PPPoA) sessions during Route Processor switchover.
SSO L2TP
The L2TP HA Session SSO/ISSU on a LAC/LNS feature provides a generic stateful switchover/In Service Software Upgrade (SSO/ISSU) mechanism for Layer 2 Tunneling Protocol (L2TP) on a Layer 2 Access Concentrator (LAC) and a Layer 2 Network Server (LNS). This feature preserves all fully established PPP and L2TP sessions during an SSO switchover or an ISSU upgrade or downgrade.
SSO PPPoE
The Broadband High Availability Stateful Switchover feature delivers stateful switchover capability for PPP over Ethernet (PPPoE) subscriber access sessions, including PPPoE, PPPoEoVLAN, and PPPoEoQinQ.
SSO RA-MLPS VPN
The Broadband High Availability Stateful Switchover feature delivers stateful switchover capability for PPPoX terminated into remote access (RA)-Multiprotocol Label Switching (MPLS) VPN or PPPoX into MPLS VPN sessions during processor switchover.
The figure below shows a typical broadband aggregation HA deployment with SSO functionality.
Benefits of Broadband High Availability Stateful Switchover
Reduces operating costs associated with outages.
Delivers higher service levels to subscribers.
Improves network availability.
Promotes continuous connectivity, lower packet loss, and consistent path flow through nodes providing specific network services.
Mitigates service disruptions, reduces downtime costs, and increases operational efficiency.
How to Configure Broadband High Availability Stateful Switchover
- Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover
- Verifying and Troubleshooting Subscriber Redundancy Policy for Broadband HA Stateful Switchover
Configuring Subscriber Redundancy Policy for Broadband HA Stateful Switchover
Perform this task to configure subscriber redundancy policy for HA SSO capability for broadband subscriber sessions.
1.
enable
2.
configure
terminal
3.
subscriber
redundancy
{
bulk
limit
{
cpu
percent
delay
seconds
[
allow
sessions
]
|
time
seconds
}
|
dynamic
limit
cpu
percent
delay
seconds
[
allow
sessions
]
|
delay
seconds
|
rate
sessions
seconds
}
4.
exit
DETAILED STEPS
Verifying and Troubleshooting Subscriber Redundancy Policy for Broadband HA Stateful Switchover
To view the configuration, use the show running-config command. Sample output is available at Configuration Examples for Broadband High Availability Stateful Switchover.
1.
show
ccm
clients
2. show ccm sessions
3. show ppp subscriber statistics
4.
show
pppatm
statistics
5.
show
pppoe
statistics
6.
show
vpdn
redundancy
7.
show
vpdn
history
failure
8.
show
pppatm
redundancy
9.
show
pppoe
redundancy
10.
debug
pppatm
redundancy
11.
debug
pppoe
redundancy
DETAILED STEPS
Step 1 |
show
ccm
clients
Example: This command is useful for troubleshooting the CCM synchronization component. This command displays information about the CCM, which is the HA component that manages the capability to synchronize session launch on the standby processor of a redundant processor HA system. Active Route Processor Example: Router# show ccm clients CCM bundles sent since peer up: Sent Queued for flow control Sync Session 16000 0 Update Session 0 0 Active Bulk Sync End 1 0 Session Down 0 0 ISSU client msgs 346 0 Dynamic Session Sync 0 0 Unknown msgs 0 0 Client events sent since peer up: PPP 144000 PPPoE 96002 VPDN FSP 0 AAA 64000 PPP SIP 0 LTERM 16000 AC 0 L2TP CC 0 SSS FM 16000 VPDN LNS 0 Standby Route Processor Example: Router# show ccm clients CCM bundles rcvd since last boot: Sync Session 16000 Update Session 0 Active Bulk Sync End 1 Session Down 0 ISSU client msgs 173 Dynamic Session Sync 0 Unknown msgs 0 Client events extracted since last boot: PPP 144000 PPPoE 96002 VPDN FSP 0 AAA 64000 PPP SIP 0 LTERM 16000 AC 0 L2TP CC 0 SSS FM 16000 VPDN LNS 0 |
Step 2 |
show ccm sessions
This command is useful for troubleshooting the CCM synchronization component. This command shows information about sessions managed by CCM. Active Route Processor Example: Router# show ccm sessions Global CCM state: CCM HA Active - Dynamic Sync Global ISSU state: Compatible, Clients Cap 0x9EFFE Current Bulk Sent Bulk Rcvd ----------- ----------- ----------- Number of sessions in state Down: 0 0 0 Number of sessions in state Not Ready: 0 0 9279 Number of sessions in state Ready: 0 0 6721 Number of sessions in state Dyn Sync: 16000 16000 0 Timeout: Timer Type Delay Remaining Starts CPU Limit CPU Last ------------ -------- --------- ----------- --------- -------- Rate 00:00:01 - 64 - - Dynamic CPU 00:00:10 - 0 90 0 Bulk Time Li 00:08:00 - 1 - - RF Notif Ext 00:00:01 - 475 - - Standby Route Processor Example: Router# show ccm sessions Global CCM state: CCM HA Standby - Collecting Global ISSU state: Compatible, Clients Cap 0x9EFFE Current Bulk Sent Bulk Rcvd ----------- ----------- ----------- Number of sessions in state Down: 0 0 0 Number of sessions in state Not Ready: 0 0 8384 Number of sessions in state Ready: 16000 0 7616 Number of sessions in state Dyn Sync: 0 0 0 Timeout: Timer Type Delay Remaining Starts CPU Limit CPU Last ------------ -------- --------- ----------- --------- -------- Rate 00:00:01 - 0 - - Dynamic CPU 00:00:10 - 0 90 0 Bulk Time Li 00:08:00 - 1 - - RF Notif Ext 00:00:01 - 0 - - |
Step 3 |
show ppp subscriber statistics
This command is useful for reviewing PPPoX session statistics. Use the show ppp subscriber statistics command to display a cumulative count of PPP subscriber events and statistics, and to display an incremental count since the clear ppp subscriber statistics command was last issued. The following is sample output from the show ppp subscriber statistics command: Example: Router# show ppp subscriber statistics PPP Subscriber Events TOTAL SINCE CLEARED Encap 5 5 DeEncap 0 0 CstateUp 7 7 CstateDown 4 4 FastStart 0 0 LocalTerm 7 7 LocalTermVP 0 0 MoreKeys 7 7 Forwarding 0 0 Forwarded 0 0 SSSDisc 0 0 SSMDisc 0 0 PPPDisc 0 0 PPPBindResp 7 7 PPPReneg 3 3 RestartTimeout 5 5 PPP Subscriber Statistics TOTAL SINCE CLEARED IDB CSTATE UP 4 4 IDB CSTATE DOWN 8 8 APS UP 0 0 APS UP IGNORE 0 0 APS DOWN 0 0 READY FOR SYNC 8 8 |
Step 4 |
show
pppatm
statistics
This command is useful for obtaining statistics for PPPoA sessions. Use the show pppatm statistics command to display a total count of PPPoA events since the clear pppatm statisticscommand was last issued. The following example displays PPPoA statistics: Example: Router# show pppatm statistics 4000 : Context Allocated events 3999 : SSS Request events 7998 : SSS Msg events 3999 : PPP Msg events 3998 : Up Pending events 3998 : Up Dequeued events 3998 : Processing Up events 3999 : Vaccess Up events 3999 : AAA unique id allocated events 3999 : No AAA method list set events 3999 : AAA gets nas port details events 3999 : AAA gets retrived attrs events 68202 : AAA gets dynamic attrs events 3999 : Access IE allocated events |
Step 5 |
show
pppoe
statistics
This command is useful for reviewing PPPoX session statistics. Use the show pppoe statistics command to display a cumulative count of PPPoE events and statistics, and to display an incremental count since the clear pppoe statistics command was last issued. The following is sample output from the show pppoe statistics command: Example: Router# show pppoe statistics PPPoE Events TOTAL SINCE CLEARED ------------------------------ ------------- ------------- INVALID 0 0 PRE-SERVICE FOUND 0 0 PRE-SERVICE NONE 0 0 SSS CONNECT LOCAL 0 0 SSS FORWARDING 0 0 SSS FORWARDED 0 0 SSS MORE KEYS 0 0 SSS DISCONNECT 0 0 CONFIG UPDATE 0 0 STATIC BIND RESPONSE 0 0 PPP FORWARDING 0 0 PPP FORWARDED 0 0 PPP DISCONNECT 0 0 PPP RENEGOTIATION 0 0 SSM PROVISIONED 0 0 SSM UPDATED 0 0 SSM DISCONNECT 0 0 PPPoE Statistics TOTAL SINCE CLEARED ------------------------------ ------------- ------------- SSS Request 0 0 SSS Response Stale 0 0 SSS Disconnect 0 0 PPPoE Handles Allocated 0 0 PPPoE Handles Freed 0 0 Dynamic Bind Request 0 0 Static Bind Request 0 0 |
Step 6 |
show
vpdn
redundancy
Use this command to verify the failure of any L2TP tunnels. Example: Router# show vpdn redundancy L2TP HA support: Silent Failover L2TP HA Status: Checkpoint Messaging on: FALSE Standby RP is up: TRUE Recv'd Message Count: 0 L2TP Tunnels: 2/2/2/0 (total/HA-enabled/HA-est/resync) L2TP Sessions: 10/10/10 (total/HA-enabled/HA-est) L2TP Resynced Tunnels: 0/0 (success/fail) |
Step 7 |
show
vpdn
history
failure
Use this command to verify the failure of any VPDN groups. Example: Router# show vpdn history failure % VPDN user failure table is empty |
Step 8 |
show
pppatm
redundancy
Use the show pppatm redundancy command to display the PPPoA HA sessions summary. The following is sample output from the show pppatm redundancy command from a Cisco 10000 series router standby processor: Example: Router-stby# show pppatm redundancy 0 : Session recreate requests from CCM 0 : Session up events invoked 0 : Sessions reaching PTA 0 : Sessions closed by CCM 0 : Session down events invoked 0 : Queued sessions waiting for base hwidb creation 0 : Sessions queued for VC up notification so far 0 : Sessions queued for VC encap change notification so far 0 : VC activation notifications received from ATM 0 : VC encap change notifications received from ATM 0 : Total queued sessions waiting for VC notification(Encap change+VC Activation) |
Step 9 |
show
pppoe
redundancy
This command is useful for reviewing PPPoX session statistics. Use the show pppoe redundancy command to display statistics and events for PPPoE sessions. This command gives a cumulative count of PPPoE events and statistics, and an incremental count since the clear pppoe redundancy command was last issued. The following is sample output from the show pppoe redundancy command from a Cisco 10000 series router standby processor: Example: Router-stby# show pppoe redundancy 12 Event Queues size max kicks starts false suspends ticks(ms) 9 PPPoE CCM EV 0 1 2 3 1 0 20 Event Names Events Queued MaxQueued Suspends usec/evt max/evt 1* 9 Recreate UP 2 0 1 0 1500 3000 2* 9 Recreate DOWN 0 0 0 0 0 0 3* 9 VC Wait UP 0 0 0 0 0 0 4* 9 VC Wait Encap 0 0 0 0 0 0 Sessions waiting for Base Vaccess: 0 Sessions waiting for ATM VC UP: 0 Sessions waiting for Auto VC Encap 0 |
Step 10 |
debug
pppatm
redundancy
Use the debug pppatm redundancy command to display CCM events and messages for PPPoA sessions on HA systems. This command is generally used only by Cisco engineers for internal debugging of CCM processes. The following is sample output from the debug pppatm redundancy command from a Cisco 10000 series router active processor: Example: Router# debug pppatm redundancy PPP over ATM redundancy debugging is on |
Step 11 |
debug
pppoe
redundancy
Use the debug pppoe redundancy command to display CCM events and messages for PPPoE sessions on HA systems. This command is generally used only by Cisco engineers for internal debugging of CCM processes. Example: Router# debug pppoe redundancy Nov 22 17:21:11.327: PPPoE HA[0xBE000008] 9: Session ready to sync data Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PADR, length = 58 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SESSION ID, length = 2 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SWITCH HDL, length = 4 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SEGMENT HDL, length = 4 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PHY SWIDB DESC, length = 20 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = VACCESS DESC, length = 28 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: Sync collection for ready events Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PADR, length = 58 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SESSION ID, length = 2 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SWITCH HDL, length = 4 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = SEGMENT HDL, length = 4 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = PHY SWIDB DESC, length = 20 Nov 22 17:21:11.351: PPPoE HA[0xBE000008] 9: code = VACCESS DESC, length = 28 |
Configuration Examples for Broadband High Availability Stateful Switchover
Example Configuring Broadband High Availability Stateful Switchover
The following example shows how to configure the Broadband High Availability Stateful Switchover feature:
Router# configure terminal Router(config)# subscriber redundancy bulk limit cpu 75 delay 20 allow 30 Router(config)# exit
The following is a sample configuration of PPPoX terminated into an RA-MPLS network with SSO. Commands that appear in the configuration task tables for this feature but that do not appear in the running configuration output are configured for their default settings.
Router# show running-config hostname Router ! boot-start-marker boot system bootflash:packages.conf ! enable password cisco ! aaa new-model ! ! aaa authentication ppp default local ! ! ! aaa session-id common ppp hold-queue 80000 ip subnet-zero no ip gratuitous-arps no ip domain lookup ip vrf vrf1 rd 1:1 route-target export 1:1 route-target import 1:1 ! no ip dhcp use vrf connected ! ! ! ! no subscriber policy recording rules
The following lines show the subscriber redundancy policy configuration:
subscriber redundancy dynamic limit cpu 90 delay 10 subscriber redundancy bulk limit cpu 90 delay 10 subscriber redundancy rate 4000 1 subscriber redundancy delay 10 no mpls traffic-eng mpls ldp graceful-restart mpls ldp router-id Loopback100 no virtual-template snmp no issu config-sync policy bulk prc no issu config-sync policy bulk bem ! redundancy mode sso username cisco password 0 cisco ! bba-group pppoe grp1 virtual-template 1 ! bba-group pppoe grp2 virtual-template 2 ! bba-group pppoe grp3 virtual-template 3 ! bba-group pppoe grp4 virtual-template 4 ! bba-group pppoe grp5 virtual-template 5 ! bba-group pppoe grp7 virtual-template 7 ! bba-group pppoe grp8 virtual-template 8 ! bba-group pppoe grp6 virtual-template 6 ! ! interface Loopback0 ip vrf forwarding vrf1 ip address 10.1.1.1 255.255.255.255 ! interface Loopback100 ip address 192.168.0.1 255.255.255.255 ! interface FastEthernet0/0/0 ip address 192.168.2.26 255.255.255.0 speed 100 full-duplex ! interface GigabitEthernet1/0/0 no ip address load-interval 30 ! interface GigabitEthernet1/0/0.1 encapsulation dot1Q 2 pppoe enable group grp1 ! ! interface GigabitEthernet1/0/0.2 encapsulation dot1Q 2 pppoe enable group grp2 ! ! interface GigabitEthernet1/0/1 no ip address ! interface GigabitEthernet1/0/1.1 encapsulation dot1Q 2 pppoe enable group grp3 ! ! interface GigabitEthernet1/0/1.2 encapsulation dot1Q 2 pppoe enable group grp4 ! ! interface GigabitEthernet1/0/2 no ip address ! interface GigabitEthernet1/0/2.1 encapsulation dot1Q 2 pppoe enable group grp5 ! ! interface GigabitEthernet1/0/2.2 encapsulation dot1Q 2 pppoe enable group grp6 ! ! interface GigabitEthernet1/0/3 no ip address ! interface GigabitEthernet1/0/3.1 encapsulation dot1Q 2 pppoe enable group grp7 ! ! interface GigabitEthernet1/0/3.2 encapsulation dot1Q 2 pppoe enable group grp8 ! interface GigabitEthernet7/0/3 no ip address ! interface GigabitEthernet8/0/0 mac-address 0011.0022.0033 ip vrf forwarding vrf1 ip address 10.1.1.2 255.255.255.0 negotiation auto ! interface GigabitEthernet8/1/0 ip address 10.1.1.1 255.255.255.0 negotiation auto mpls ip ! interface Virtual-Template1 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool1 no snmp trap link-status keepalive 30 ppp authentication pap ! interface Virtual-Template2 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool2 no snmp trap link-status keepalive 30 ppp authentication pap ! interface Virtual-Template3 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool3 no snmp trap link-status keepalive 30 ppp authentication pap ! interface Virtual-Template4 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool4 no snmp trap link-status keepalive 30 ppp authentication pap ! interface Virtual-Template5 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool5 no snmp trap link-status keepalive 30 ppp authentication pap ! interface Virtual-Template6 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool6 no snmp trap link-status keepalive 30 ppp authentication pap ! interface Virtual-Template7 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool7 no snmp trap link-status keepalive 30 ppp authentication pap ! interface Virtual-Template8 ip vrf forwarding vrf1 ip unnumbered Loopback0 no logging event link-status peer default ip address pool pool8 no snmp trap link-status keepalive 30 ppp authentication pap ! router ospf 1 log-adjacency-changes nsf network 10.1.1.0 0.0.0.255 area 0 network 224.0.0.0 0.0.0.255 area 0 ! router bgp 1 no synchronization bgp log-neighbor-changes bgp graceful-restart restart-time 120 bgp graceful-restart stalepath-time 360 bgp graceful-restart neighbor 224.0.0.3 remote-as 1 neighbor 224.0.0.3 update-source Loopback100 no auto-summary ! address-family vpnv4 neighbor 224.0.0.3 activate neighbor 224.0.0.3 send-community extended exit-address-family ! address-family ipv4 vrf vrf1 redistribute connected redistribute static no auto-summary no synchronization exit-address-family ! ip local pool pool2 10.1.1.1 10.1.16.160 ip local pool pool3 10.13.1.1 10.13.16.160 ip local pool pool4 10.14.1.1 10.14.16.160 ip local pool pool5 10.15.1.1 10.15.16.160 ip local pool pool6 10.16.1.1 10.16.16.160 ip local pool pool7 10.17.1.1 10.17.16.160 ip local pool pool8 10.18.1.1 10.18.16.160 ip classless ! ! no ip http server ! ! arp 10.20.1.1 0020.0001.0001 ARPA arp vrf vrf1 10.20.1.1 0020.0001.0001 ARPA ! ! ! line con 0 line aux 0 line vty 0 4 password cisco ! exception crashinfo file bootflash:crash.log ! end
Additional References
Related Documents
Related Topic |
Document Title |
---|---|
Cisco IOS commands |
|
Cisco IOS Broadband Access Aggregation and DSL commands |
Cisco IOS Broadband Access Aggregation and DSL Command Reference |
High Availability |
"High Availability Overview" chapter in the Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide |
Performing an ISSU |
The following chapters in the Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide : |
Broadband ISSU |
"Broadband High Availability In Service Software Upgrade" module |
Stateful switchover |
"Stateful Switchover" module |
Configuring nonstop forwarding |
"Configuring Nonstop Forwarding" module |
Layer 2 Tunnel Protocol |
Layer 2 Tunnel Protocol Technology Brief" module |
Standards
Standard |
Title |
---|---|
No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
-- |
MIBs
MIB |
MIBs Link |
---|---|
None |
To locate and download MIBs for selected platforms, Cisco software releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFCs
RFC |
Title |
---|---|
No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature. |
-- |
Technical Assistance
Description |
Link |
---|---|
The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for Broadband High Availability Stateful Switchover
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Feature Name |
Releases |
Feature Information |
---|---|---|
SSO--PPPoA |
Cisco IOS XE Release 3.3S |
In Cisco IOS XE Release 3.3S, this feature was implemented on ASR 1000 Series Routers. The Broadband High Availability Stateful Switchover feature delivers stateful switchover capability for PPP over ATM (PPPoA) sessions during RP switchover. The following commands were introduced or modified: subscriber redundancy, debug pppatm redundancy, debug pppoe redundancy, show pppoe redundancy, show pppatm statistics. |
SSO--PPPoE |
Cisco IOS XE Release 2.1 Cisco IOS XE Release 2.5 |
In Cisco IOS XE Release 2.1, this feature was implemented on ASR 1000 Series Routers. This feature uses the SSO--PPPoE feature to provide the capability for dual Route Processor systems to support stateful switchover of PPPoX sessions and allow applications and features to maintain state while system control and routing protocol execution is transferred between an active and a standby processor. The following commands were introduced or modified: clear ppp subscriber statistics, clear pppoe statistics, debug pppoe redundancy, show ccm clients, show ccm sessions, show ppp subscriber statistics, show pppoe statistic, subscriber redundancy. |