no checkpoint session periodic-interval
end
Selective Disabling of NACK Messaging
The NACK mechanism sends a NACK message for any ICSR checkpoint failure on the standby chassis.
Every NACK sent from the standby chassis triggers a full checkpoint from the active chassis.
If the micro-checkpoint is failing continuously and sending NACKs, the active chassis keeps sending
full-checkpoints. This increases SRP bandwidth.
CLI commands allow an operator to selectively disable and re-enable NACK messages for specific
micro-checkpoints.
The Exec mode
srp disable nack micro-chkpt-cmd
disables the sending of a NACK from the standby chassis.
srp disable nack micro-chkpt-cmd chkpt_number
chkpt_number
specifies the checkpoint number to be disabled as an integer from 1 through 255. You can
obtain checkpoint numbers (CMD IDs) from the output of the
show srp checkpoint info
command.
You can re-enable the micro-checkpoint using the
srp enable nack micro-chkpt-cmd
command.
srp enable nack micro-chkpt-cmd chkpt_number
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.
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 339
.
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 340
.
Step 3
Verify your BGP context configuration by following the steps in
Verifying BGP Configuration, on page 340
.
Step 4
Save your configuration as described in
Verifying and Saving Your Configuration
.
Configuring BGP Router and Gateway Address
Use the following example to create the BGP context and network addresses.
configure
context source_ctxt_name
router bgp AS_num
ASR 5000 System Administration Guide, StarOS Release 21.1
339
Interchassis Session Recovery
Modifying the Source Context for ICSR
Summary of Contents for ASR 5000
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Page 400: ...ASR 5000 System Administration Guide StarOS Release 21 1 372 Engineering Rules ECMP Groups ...