Cisco ONS 15454 SDH Specifications download pdf (Page 45)

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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3

May 2002

Chapter 1 Alarm Troubleshooting

Alarm Procedures

Step 8 If the alarm reappears when the TCC-I in Slot 7 reboots as the active TCC-I, the TCC-I card in Slot 7 is

defective and must be replaced.

Note When replacing a card with an identical type of card, you do not need to change the CTC

database.

1.5.17 CONTBUS-B

• Major, Non-service affecting

The communication failure TCC-I to shelf communication failure alarm indicates the TCC-I card in Slot

11 lost communication with a line card. Cards require frequent communication with the TCC-I card,

because the TCC-I card performs system initialization, provisioning, alarm reporting, maintenance,

diagnostics, IP address detection/resolution, SDH DCC termination, and system fault detection among

other operations for the ONS 15454 SDH. The TCC-I card also ensures that the system maintains timing

requirements.

This alarm may appear briefly when the ONS 15454 SDH switches over to the protect TCC-I card. In

this instance, the alarm clears after the other cards establish communication with the new primary TCC-I

card. In cases where the alarm persists, the problem lies in the physical path of communication from the

TCC-I card to the reporting card. The physical path of communication includes the TCC-I card, the card

in Slot X, and the backplane.

Caution Always use the supplied electrostatic discharge wristband when working with a powered

ONS 15454 SDH. Plug the wristband cable into the ESD jack located on the middle-right outside edge

of the shelf assembly.

Procedure: Clear the CONTBUS-B Alarm

Step 1 Ensure the reporting card is physically present. Record the card type.

Step 2 If this slot is the only one reporting the alarm, perform a software reset on the traffic card:

a. Display the CTC node view.

b. Position the cursor over the slot reporting the alarm.

c. Right-click the mouse and choose RESET CARD to do a software reset.

Step 3 If the software reset does not clear the alarm, physically reseat the reporting card.

Step 4 If all cards with the exception of the active TCC-I report this alarm, perform a software reset of the active

TCC-I:

a. Display the CTC node view.

b. Position the cursor over the active TCC-I card slot.

c. Choose RESET CARD.

Step 5 If the software reset does not clear the card, physically reseat the TCC-I card to perform a card pull.

Step 6 If the alarm still does not clear, replace the TCC-I card.

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Cisco ONS 15454 SDH Specifications Page 45