Enable Primary Chassis Bfd Monitoring; Set Bfd To Ignore Icsr Dead Interval; Configure Icsr Switchover Guard Timer - Cisco ASR 5500 Administration Manual

Chassis-to-Chassis BFD Monitoring for ICSR
• Enable Primary Chassis BFD Monitoring, on page
• Set BFD to Ignore ICSR Dead Interval, on page
• Configure ICSR Switchover Guard Timer, on page
• Enable BFD Multihop Fall-over , on page
• Enable Advertising BGP Routes from Standby ICSR Chassis, on page

Enable Primary Chassis BFD Monitoring

You must enable monitoring of the connection between the primary chassis and specified BFD neighbors. If
the connection drops, the standby chassis becomes active. For more information, see
Connection for ICSR, on page

Set BFD to Ignore ICSR Dead Interval

The SRP Configuration mode bfd-mon-ignore-dead-interval command causes the standby ICSR chassis to
ignore the dead interval and remain in the standby state until all the BFD chassis-to-chassis monitors fail.
Enable this feature in association with BFD chassis-to-chassis monitoring to support more aggressive ICSR
failure detection times.
configure
context context_name
service-redundancy-protocol variable
bfd-mon-ignore-dead-interval
end

Configure ICSR Switchover Guard Timer

The SRP Configuration mode guard timer command configures the redundancy-guard-period and
monitor-damping-period for SRP service monitoring.
Use these guard timers to ensure that local failures, such as card reboots and task restarts, do not result in
ICSR events which can be disruptive.
configure
context context_name
service-redundancy-protocol variable
guard-timer { aaa-switchover-timers { damping-period seconds | guard-period seconds } |
diameter-switchover-timers { damping-period seconds | guard-period seconds } | srp-redundancy-timers
{ aaa { damping-period seconds | guard-period seconds } | bgp { damping-period seconds |
guard-period seconds } | diam { damping-period seconds | guard-period seconds } }
end
Notes:
• aaa-switchover-timers – sets timers that prevent back-to-back ICSR switchovers due to an AAA failure
(post ICSR switchover) while the network is still converging.
ASR 5500 System Administration Guide, StarOS Release 19
228
227.
◦damping-period – configures a delay time to trigger an ICSR switchover due to a monitoring
failure within the guard-period.
◦guard-period – configures the local-failure-recovery network-convergence timer.
228.
228.
228.
229.
Routing
230.
Monitoring BFD