chassis waits for seven heart beat messages from the active chassis before it is ready to accept data. This may
cause significant delay in session manager database synchronization on the standby chassis.
You can enable an aggressive method for synchronizing the session manager database reduces recovery time
in the following scenarios:
•
Standby Session Manager crash
•
Packet processing card failure on Standby chassis
•
Standby chassis reboot
•
Temporary loss and recovery of SRP connection
The aggressive method reduces the number of heartbeat messages and amount of housekeeping information
exchanged between ICSR chassis.
The SRP Configuration mode
standby database-recovery aggressive
command allows you to select normal
or aggressive restoration of the SRP database.
The following command sequence enables the aggressive recovery mode:
configure
context context_name
service-redundancy-protocol
standby database-recovery aggressive
end
The default form of this command restores the normal mode of SRP database recovery.
Verifying SRP Configuration
Verify that your SRP contexts were created and configured properly by running the
show srp info
command
(Exec Mode) on each chassis.
Notes:
•
The interval is specified as an integer divisible by 15 in the range from 30 through 1440 (Default = 45
minutes). The interval range for sending full checkpoints is 30 minutes to 24 hours (1140 minutes).
Modifying the Source Context for ICSR
To modify the source context of core service:
Step 1
Add the Border Gateway Protocol (BGP) router AS-path and configure the gateway IP address, neighbor IP address,
remote IP address in the source context where the core network service is configured, by applying the example
configuration in
Configuring BGP Router and Gateway Address, on page 283
.
Step 2
Configure the service redundancy context with the BGP neighbor context and IP address to monitor the BGP link activity
by applying the example configuration in
Configuring the SRP Context for BGP, on page 283
.
Step 3
Verify your BGP context configuration by following the steps in
Verifying BGP Configuration, on page 283
.
Step 4
Save your configuration as described in
Verifying and Saving Your Configuration
.
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Interchassis Session Recovery
Modifying the Source Context for ICSR