Cisco Cisco Packet Data Interworking Function (PDIF)
Interchassis Session Recovery
Updating the Operating System ▀
ASR 5000 System Administration Guide, StarOS Release 18 ▄
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Primary Chassis
Log into the active primary chassis and complete the tasks described below.
Initiating an SRP Switchover
An SRP switchover places the primary chassis in standby mode and makes the backup chassis active. The secondary
chassis is now processing sessions with the upgraded software.
chassis is now processing sessions with the upgraded software.
Step 1
On the primary chassis run the srp initiate-switchover command. All existing sessions will be migrated to the backup
chassis and it begins servicing new session requests. Allow the switchover process to complete.
chassis and it begins servicing new session requests. Allow the switchover process to complete.
Step 2
On the primary chassis, run the show srp info command. Chassis State should indicate Standby when switchover is
complete.
complete.
Step 3
On the backup chassis, confirm the switchover is complete by running the show srp info command. Chassis State
should indicate Active when switchover is complete.
should indicate Active when switchover is complete.
Checking AAA Monitor Status on the Newly Active Chassis
If your network deployment requires communication with AAA servers, log into the newly active chassis and perform
an AAA monitor check. You will be checking for the existence of any SNMP traps that indicate the chassis cannot
communicate with AAA servers (starSRPAAAUnreachable).
an AAA monitor check. You will be checking for the existence of any SNMP traps that indicate the chassis cannot
communicate with AAA servers (starSRPAAAUnreachable).
Step 1
Run the Exec mode command show snmp trap history |grep starSRPAAAUnreachable.
Step 2
There should be no output for this command, or no very recent SNMP trap notifications (based on the event timestamp).
Step 3
additional information on how to proceed.
Completing the Software Update
Log into the standby chassis and repeat the following tasks to complete the upgrade process on the standby primary
chassis:
chassis: