Cisco Cisco Packet Data Gateway (PDG)
Interchassis Session Recovery
Configuring Interchassis Session Recovery (ICSR) ▀
ASR 5000 System Administration Guide, StarOS Release 18 ▄
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SRP Redundancy, AAA and Diameter Guard Timers
Guard timers ensure that local failures, such as card reboots and task restarts, do not result in ICSR events which can be
disruptive.
disruptive.
The guard timer command configures the redundancy-guard-period and monitor-damping-period for SRP service
monitoring.
monitoring.
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 } }
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.
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.
diameter-switchover-timers – sets timers that prevent a back-to-back ICSR switchover due to a Diameter
failure (post ICSR switchover) while the network is still converging.
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.
srp-redundancy-timers – sets timers that prevent an ICSR switchover while the system is recovering from a
local card-reboot/critical-task-restart failure.
aaa – local failure followed by AAA monitoring failure
bgp – local failure followed by BGP monitoring failure
diam – local failure followed by Diameter monitoring failure