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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.7.42 CONTBUS-DISABLED
Clear the CONTBUS-CLK-B Alarm
Step 1 If a single traffic port is reporting the alarm and it is part of a path protection, complete the “Initiate a
Force Switch for All Circuits on a Path Protection Span” procedure on page 2-151. If the traffic port is
part of a 1+1 protection group, complete the “Clear a 1+1 Force or Manual Switch Command” procedure
on page 2-149.
Note If the active CTX2500 card is reporting the alarm, shelf control should already have switched
off the card.
Step 2 Complete the appropriate procedure in the “2.10.3 Physical Card Reseating and Replacement” section
on page 2-154 for the reporting card.
Step 3 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1-800-553-2447).
Step 4 If traffic was manually switched in a 1+1 protection group, revert traffic to the original port by
completing the “Clear a 1+1 Force or Manual Switch Command” procedure on page 2-149. If traffic was
manually switched in a path protection, revert traffic to the original path by completing the “Clear an
External Switching Command on a Path Protection Span” procedure on page 2-152.
2.7.42 CONTBUS-DISABLED
Default Severity: Critical (CR), Service-Affecting (SA)
SONET Logical Object: EQPT
The CONTBUS-DISABLED alarm occurs when an Ethernet card is defective upon insertion into the
chassis or when a card that is already present in the chassis becomes defective. (That is, the card fails
the enhanced cell bus verification test.) The alarm persists as long as the defective card remains in the
chassis. When the card is removed, CONTBUS-DISABLED will remain raised for a one-minute wait
time. This wait time is designed as a guard period so that the system can distinguish this outage from a
briefer card reset communication outage.
If no card is reinserted into the original slot during the wait time, the alarm clears. After this time, a
different, nondefective card (not the original card) should be inserted.
When CONTBUS-DISABLED is raised, no message-oriented communication is allowed to or from this
Ethernet slot to the controller card (15310-CL-CTX or CTX2500 card), thus avoiding node
communication failure.
Caution CONTBUS-DISABLED clears only when the faulty card is removed for one minute. If any card at all is
reinserted before the one-minute guard period expires, the alarm does not clear.
CONTBUS-DISABLED overrides the IMPROPRMVL alarm during the one-minute wait period, but
afterward IMPROPRMVL can be raised because it is no longer suppressed. IMPROPRMVL is raised
after CONTBUS-DISABLED clears if the card is in the node database. If CONTBUS-DISABLED has
cleared but IMPROPRMVL is still active, inserting a card will clear the IMPROPRMVL alarm.
For more information about Ethernet cards, refer to the Cisco ONS 15310-CL and Cisco ONS 15310-MA
Ethernet Card Software Feature and Configuration Guide.