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Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
OL-8723-19
Chapter 16 Disaster Recovery Procedures
Disaster Recovery Using the Automatic Shared Memory Backup
Automatic Shared Memory Backup Restore
This section describes the procedure for restoring a platform to its ASMB shared memory backup.
It is possible that multiple BTS 10200 network elements (NEs) need to have the shared memory restored.
If so, then this procedure should be executed for each one. It is recommended that the NEs be recovered
(if necessary) in the following order:
•
Call Agent (CA)
•
Feature Server (POTS)
•
Feature Server (AIN)
•
Element Management System (EMS)
•
Billing Data Management System (BDMS)
The EMS and BDMS are usually hosted on a separate system from the Call Agent and Feature Servers,
therefore they can be recovered in parallel with the NEs on the CA/FS system.
Additionally, all BTS NEs on one of the systems should be restored first before attempting to restore the
ones on the mate. This will ensure that full service is restored as soon as possible.
Step 1
Use the console to gain access to Side A and Side B of the system with the network element(s) to be
restored.
Step 2
Verify that both Side A and Side B of the NE are out of service using the
nodestat
command. Verify
neither NE will return to service after a
platform start
command. If either side is in service or can be
returned to service, exit this procedure.
Step 3
Choose which side of the NE to restore first. We recommend Side A as a convention, and therefore will
refer to Side A in this procedure. Exit from the console of the other system.
Step 4
On Side A, run the script
restoreSharedMemory
. This script will remove the current, corrupted shared
memory and then replace it with the ASMB backup copy. To restore the Call-agent, run
restoreSharedMemory -i CAxxx
.
Step 5
Bring the BTS 10200 NE back into service with the
platform start
command.
Step 6
Verify that the NE returns to service in the Active state using the
nodestat
command.
Step 7
to
for FSPTC and FSAIN if necessary using
restoreSharedMemory -i FSPTCyyy
and
restoreSharedMemory -i FSAINzzz
.
Step 8
After all BTS 10200 NEs are in service on Side A, perform an
Audit
of the EMS system database to the
CA/FS system database. The Audit will report any differences between the two system databases.
Because the data in the CA/FS shared memory backup can be up to 24 hours old, it is likely there will
be differences. These should then be resolved with a
Sync
of the EMS database to the CA/FS database.
Step 9
Perform some test calls to verify that full functionality is provided by the BTS 10200 after all NEs on
Side A have been completely restored. If there are any problems, contact Cisco TAC immediately.