Cisco Cisco Packet Data Interworking Function (PDIF)
Routing
Bidirectional Forwarding Detection ▀
ASR 5000 System Administration Guide, StarOS Release 18 ▄
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Chassis-to-Chassis BFD Monitoring for ICSR
An operator can configure BFD to more quickly advertise routes during an ICSR switchover. This solution
complements the feature that allows the advertising of BGP routes from a Standby ICSR chassis. The overall goal is to
support more aggressive failure detection and recovery in an ICSR configuration when implementing of VoLTE.
complements the feature that allows the advertising of BGP routes from a Standby ICSR chassis. The overall goal is to
support more aggressive failure detection and recovery in an ICSR configuration when implementing of VoLTE.
You must configure the following features for chassis-to-chassis BFD monitoring in ICSR configurations:
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 drops, the standby chassis becomes active. For more information, see
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.
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.
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.
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.
which can be disruptive.
configure
context context_name
service-redundancy-protocol variable