Nortel Networks Confidential | Overview 27 |
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these sessions either receive no indication or continue to hear an alerting tone for an indefinite period of time.
Manual failover
There are two recommended procedures for manually initiating the fail-over of an active instance to a Standby node: the initiation of discrete LOCK and UNLOCK actions, or the initiation of a restart.
Lock/Unlock If you want to force a fail-over in order to perform maintenance on the "failed" server, then request a LOCK from the Management Console. The LOCK forces the component into a disabled operational state, where it remains until you request an UNLOCK from the Management Console. You can perform any maintenance on the "failed" server while it is LOCKed. Once maintenance is complete, the server can be UNLOCKed from the Management Console, which causes an automatic restart and brings the server back into service.
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