Enabling Session Recovery On An Out-Of-Service System; Enabling Session Recovery On An In-Service System - Cisco ASR 5500 System Administration Manual

Enabling Session Recovery

Enabling Session Recovery on an Out-of-Service System

The following procedure is for a system that does not have any contexts configured.
To enable the session recovery feature on an out-of-service system, follow the procedure below. This procedure
assumes that you begin at the Exec mode prompt.
Step 1
At the Exec mode prompt, verify that the session recovery feature is enabled via the session and feature use licenses on
the system by running the show license info command.
If the current status of the Session Recovery feature is Disabled, you cannot enable this feature until a license key is
installed in the system.
Step 2 Use the following configuration example to enable session recovery.
configure
require session recovery
end
Step 3
Save your configuration as described in Verifying and Saving Your Configuration.
The system, when started, enables session recovery, creates all mirrored "standby-mode" tasks, and performs packet
processing card reservations and other operations automatically.
Step 4 After the system has been configured and placed in-service, you should verify the preparedness of the system to support
this feature as described in

Enabling Session Recovery on an In-Service System

When enabling session recovery on a system that already has a saved configuration, the session recovery
commands are automatically placed before any service configuration commands in the configuration file.
To enable the session recovery feature on an in-service system, follow the procedure below. This procedure
assumes that you begin at the Exec mode prompt.
Step 1
At the Exec mode prompt, verify that the session recovery feature is enabled via the session and feature use licenses on
the system by running the show license info command:
If the current status of the Session Recovery feature is Disabled, You cannot enable this feature until a license key is
installed in the system.
Step 2 Use the following configuration example to enable session recovery.
configure
require session recovery
end
This feature does not take effect until after the system has been restarted.
Step 3 Save your configuration as described in Verifying and Saving Your Configuration.
Step 4
Perform a system restart by entering the reload command:
The following prompt appears:
ASR 5500 System Administration Guide, StarOS Release 21.5
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Viewing Session Recovery Status, on page 261
Session Recovery