Verifying The Software Version; Saving The Configuration File; Completing The Update Process; Waiting For Session Synchronization - Cisco ASR 5500 System Administration Manual

Interchassis Session Recovery

Verifying the Software Version

After the system has successfully booted, verify that the new StarOS version is running by executing the Exec
mode show version command.
You can run the Exec mode show build command to display additional information about the StarOS build
release.

Saving the Configuration File

Use the Exec mode save configuration command to save the currently running configuration to the /flash
device and to an off-chassis location (external memory device or network URL). The off-chassis copy assures
that you will have a fallback, loadable configuration file should a problem be encountered.

Completing the Update Process

Repeat the following tasks to complete the upgrade process on the standby secondary chassis:
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Waiting for Session Synchronization

Allow time for session synchronization to occur between the ICSR chassis before preceding to the next steps.
Step 1 Run the show session recovery status verbose command on both chassis. Proceed to the next steps only when no errors
are seen in the output of this command.
Step 2 On the standby chassis, run show srp checkpoint statistics |more.
Step 3
On active chassis, run show subs summary |grep Total.
Step 4 Compare the number of subscribers on the active chassis and the number of Current pre-allocated calls: on the standby
chassis. They should be similar (within 5%). Allow a few minutes for systems to complete synchronization.

Primary System

Perform the tasks described below on the primary (active) ICSR system.
Synchronizing File Systems, on page 294
Performing Health Checks, on page 293
Performing SRP Checks, on page 293
Performing BGP Checks, on page 293
ASR 5500 System Administration Guide, StarOS Release 21.5
Primary System
295