Alcatel-Lucent 1643 AMS Operation Manual page 267

Alarm messages
VC-12 Virtual concatenated loss of total capacity
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Alarm identifier
Information
Alarm category
ASAP
Alarm severity
(default setting)
Reporting state
(default setting)
Local indications
Cause
Actions
Note(s)
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365-312-803R7.2
Issue 4, May 2007
VC12VcLOTC
Total transmission bandwidth lost because all members of the Virtual
Concatenation Group (VCG) have failed.
This alarm will only be reported when LCAS is enabled.
Transmission
sdhVCG
Prompt
Reported
–
All members of the VCG have failed.
If there are higher order alarms (such as Loss of signal or Loss of frame for
example) at the same time, then clear these alarms first.
Make sure that the same mapping scheme (GFP or LAP-S encapsulation for
example) is applied at both ends of the connection.
Otherwise, repair the individual members (VC-12s) of the VCG.
Generally it is recommended to have LCAS enabled, and apply "diverse
routing" i.e. to route the members of the VCG via physically diverse routes.
Alcatel-Lucent - Proprietary
See notice on first page
1-247