Troubleshooting guide

Section 8, User Interface Guide - TAP-100, MX2820 Troubleshooting Guide
61186003L1-1D 8-9
M13 MUX ALARM SUMMARY - 1186002LX
Table 8-4 provides alarm information for the M13 MUX module.
PWR Bus A Fail This alarm indicates that the primary power supply has
failed (PWR A).
AID Index and TL1 condition codes are user-definable.
NOTE: If both power supplies fail, the critical relay will
switch indicating the shelf is completely without power.
User-definable
PWR Bus B Fail This alarm indicates that the secondary power supply
has failed (PWR B).
AID Index and TL1 condition codes are user-definable.
NOTE: If both power supplies fail, the critical relay will
switch indicating the shelf is completely without power.
User-definable
Device
Communication
Failure
This alarm indicates an expansion shelf stopped
communicating with the SCU
Major
Table 8-4. M13 MUX General Alarm Summary
General Alarms Description Severity Level
SWTCH TO
PROTECT
The system has switched to the protect module (card B)
in the MUX pair.
Alert
MAX SW
EXCEEDED
The MUX pair has exceeded the user-provisioned
maximum number of protection switch events.
Alert
CARD FAIL The MUX module has detected a hardware failure. Minor/Critical
Minor, if a protection
switch was
successful, Critical if
not.
BTB COMM FAIL Communication between the two MUX modules in a
protected pair has failed.
Minor
Table 8-3. SCU Alarm Summary (Continued)
Alarm Description Severity Level