Cisco Cisco IOS Software Release 12.2(27)SBC
BGP Support for Nonstop Routing (NSR) with Stateful Switchover (SSO)
How to Configure BGP Support for Nonstop Routing (NSR) with Stateful Switchover (SSO)
5
Cisco IOS Release 12.2(28)SB
Configuring a Peer to Support BGP NSR with SSO
Perform this task on a PE router if you want to configure a BGP peer to support BGP NSR with SSO.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
router bgp autonomous-system-number
4.
bgp graceful-restart [restart-time seconds] [stalepath-time seconds]
5.
address-family ipv4 vrf vrf-name
6.
neighbor ip-address remote-as autonomous-system-number
7.
neighbor ip-address ha-mode sso
8.
neighbor ip-address activate
9.
end
10.
show ip bgp vpnv4 all sso summary
DETAILED STEPS
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
•
Enter your password if prompted.
Step 2
configure
terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
router
bgp autonomous-system-number
Example:
Router(config)# router bgp 40000
Enters router configuration mode for the specified routing
process.
process.
Step 4
bgp graceful-restart
[restart-time seconds]
[stalepath-time seconds]
Example:
Router(config-router)# bgp graceful-restart
Enables the BGP graceful restart capability and BGP NSF
awareness.
awareness.
•
If you enter this command after the BGP session has
been established, you must restart the session for the
capability to be exchanged with the BGP neighbor.
been established, you must restart the session for the
capability to be exchanged with the BGP neighbor.
•
Use this command on the restarting router and all of its
peers (NSF-capable and NSF-aware).
peers (NSF-capable and NSF-aware).