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Cisco ONS 15327 Troubleshooting Guide, R3.4
March 2004
Chapter2 Alarm Troublesho oting Alarm Procedures
An XTC A to Shelf Slot Communication Failure alarm occurs when the XTC card in Slot 5 (XTC A) has
lost communication with another card in the shelf The other card is identified by the Object column in
the CTC alarm window..
The CONTBUS-IO-A alarm can appear briefly when the ONS 15327 switches to the standby XTC card.
In the case of an XTC protection switch, the alarm clears after the other cards establish communication
with the new active XTC card. If the alarm persists, the problem is with the physical path of
communication from the XTC to the reporting card. The p hysi cal pat h of c omm un icat ion i ncl ud es the
XTC card, the other card, and the backplane.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15327.
Plug the wristband cable into the ESD jack located between the top high-speed and XTC slots.
Procedure: Clear the CONTBUS-IO-A Alarm
Step 1 Ensure that the reporting card is physically present in the shelf. Record the car d type. Clic k the
Inventory tab to reveal the provisioned type.
If the actual card type and the provisioned card type do not match, see the “MEA (EQP T)” sect ion on
page 2-90.
Step 2 If the alarm object is any single card slot other then the standby XTC card in Slot 6, perform a CTC reset
of the card. Complete the “Reset a Traffic Card in CTC” procedure on page 2-129.
Step 3 When you reinsert the high-speed card, verify the following LED behavior:
•The FAIL LED blinks for approximately 30 seconds.
•All LEDs blink once and turn off.
•The ACT/STBY LED is green (active).
Step4 If the alarm obje ct is the stand by XTC in Slot 6, perf orm a soft re set of this ca rd:
a. Right-click the Slot 6 XTC card.
b. Choose Reset Card from the shortcut menu.
c. Click Yes in the confirmation dia log box. Wait ten minutes to verify that the card you reset
completely reboots and becomes the standby card.
Step 5 Verify the following LED behavior:
•The FAIL LED blinks for approximately 30 seconds.
•All LEDs blink once and turn off.
•The ACT/STBY LED is green (active).
Step 6 If CONTBUS-IO-A is raised on several cards at once, complete the “Reset the Active XTC Card in CTC”
procedure on page 2-129. Verify that the card reboots as the standby card.
Step 7 Verify that the reset is complete and error-free:
•No new alarms appear in the Alarms window in CTC.
•If you are looking at the physical ONS 15327, the ACT/STBY LED is illuminated.
•If you are looking at the node view of the ONS 15327, an amber LED depiction with “Sby” has
replaced the white “LDG” depiction on the card in CTC.
Step 8 If the CTC reset does not clear the alarm, complete the “Remove and Reinsert (Reseat) a Card”
procedure on page 2-130 for the reporting card.