Cisco ONS 15454 SDH Specifications download pdf (Page 43)

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

May 2002

Chapter 1 Alarm Troubleshooting

Alarm Procedures

Procedure: Clear the CARLOSS Alarm (EQPT)

Step 1 Verify connectivity by pinging the ONS 15454 SDH that is reporting the alarm:

a. If you are using a Microsoft Windows operating system, from the Start Menu choose Programs >

Command Prompt.

b. If you are using a Sun Solaris operating system, from the Common Desktop Environment (CDE)

click the Personal Application tab and click Terminal.

c. For both the Sun and Microsoft operating systems, at the prompt type:

ping [ONS 15454 SDH IP address]

For example, ping 192.1.0.2

If the workstation has connectivity to the ONS 15454 SDH, it displays “reply from [IP Address]”

after the ping. If the workstation does not have connectivity, a “Request timed out” message

displays.

Step 2 If the ping is successful, an active TCP/IP connection exists. Restart the CTC.

Step 3 If you are unable to establish connectivity, perform standard network/LAN diagnostics. For example,

trace the IP route, check cables, and check any routers between the node and CTC.

1.5.15 CONTBUS-A

• Major, Non-service affecting

The communication failure TCC-I A to shelf slot alarm indicates the TCC-I card in Slot 7 has lost

communication with a line card. Cards require frequent communication with the TCC-I card because the

TCC-I performs system initialization, provisioning, alarm reporting, maintenance, diagnostics, IP

address detection/resolution, SDH DCC termination, system fault detection, and other operations for the

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

The CONTBUS-A alarm can appear briefly when the ONS 15454 SDH switches to the standby TCC-I

card. In this instance, the alarm clears after the 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 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-A Alarm

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

Step 2 Click the Inventory tab to reveal the provisioned type. If the actual card type and the provisioned card

type do not match, complete the procedure in the “MEA (EQPT)” section on page 1-41.

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Cisco ONS 15454 SDH Specifications Page 43