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11-11
Cisco WAN Manager User’s Guide
Version 10.5, Part Number 78-12945-01 Rev. D0, August 2003
Chapter 11 CWM to CWM Communications
Recovering From Degrade Mode
The CWM Workstation Crashed or was Powered-off (Disaster Recovery)
Note A CWM W/S crash includes a power down, power failure, or disk crash.
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To recover from this degraded mode of operation follow these steps:
Step 1 Use the kill command (-9) on the CWMGateway process on the Secondary CWMs, after a successful
re-start of the Primary CWM.
Step 2 The CWMGateway process will then be re-started by Watchdog within seconds.
Step 3 Manually re-sync the user data tables with the usertblDBsync command. Or, avoid doing any new user
data provisioning on the re-started Primary CWM until all of the Secondary CWMs are out of degrade
mode.
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An alternate approach to re-starting the Primary CWM is as follows:
Step 1 Start the core on the Primary
Step 2 Stop the core on all Secondaries
Step 3 Start the core on the Secondary CWMs in the network one by one.
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Eliminate the downed Primary from the CWM domain only if power-on or re-start of the
Primary does not work by following these steps:
Step 1 Manually remove the downed Primary from all the other CWM’s DomainGatewayList in the
CWMGateway.conf file
The following is an example of a CWMGateway.conf file with a DomainGatewayList consisting of
three CWM workstations named cwmws1, cwmws2, and cwmws3, with cwmws1 assigned as the
Primary and cwmws2 and cwmws3 assigned as Secondaries:
Debug level 2
DomainGatewayList cwmws1 cwmws2 cwmws3
ForcedSwitchOver
HeartBeatInterval 20
The above DomainGatewayList, for example, would need to be edited to show that the downed Primary
has been removed from all the other CWM’s DomainGatewayLists in the CWMGateway.conf file. In
this example, you would remove the downed Primary from both cwmws2 and cwmws3
DomainGatewayLists to include only cwmws2 and cwmws3 Secondaries in the same domain:
Debug level 2
DomainGatewayList cwmws2 cwmws3
ForcedSwitchOver
HeartBeatInterval 20
Step 2 Manually remove all the other CWMs from the downed Primary’s DomainGatewayList in the
CWMGateway.conf file