Cisco 15310-MA Instrukcja Naprawy Pobierz pdf (Strona 153)

2-23

Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, Release 9.0

78-18394-01

Chapter 2 Alarm Troubleshooting

Alarm Procedures

Clear the APSB Alarm

Step 1 Use an optical test set to examine the incoming SONET overhead to confirm inconsistent or invalid

K bytes. For specific procedures to use the test set equipment, consult the manufacturer. If corrupted

K bytes are confirmed and the upstream equipment is functioning properly, the upstream equipment

might not interoperate effectively with the ONS 15310-CL and ONS 15310-MA.

Step 2 If the condition 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).

2.7.8 APSCDFLTK

The APSCDFLTK alarm is not used in the ONS 15310 platforms in this release. It is reserved for

development.

2.7.9 APSCINCON

Default Severity: Minor (MN), Non-Service-Affecting (NSA)

SONET Logical Object: OCN

An APS Inconsistent alarm means that an inconsistent APS byte is present. The SONET overhead

contains K1/K2 APS bytes that notify receiving equipment, such as the ONS 15310-CL and

ONS 15310-MA, to switch the SONET signal from a working to a protect path when necessary. An

inconsistent APS code occurs when three consecutive frames contain nonidentical APS bytes, which in

turn give the receiving equipment conflicting commands about switching.

Clear the APSCINCON Alarm

Step 1 Look for other alarms, especially the “LOS (OCN)” alarm on page 2-106,or the “LOF (OCN)” alarm on

page 2-95 (or the “AIS” condition on page 2-20). Clearing these alarms clears the APSCINCON alarm.

Step 2 If an APSINCON alarm occurs with no other alarms, log into the Technical Support Website at

http://www.cisco.com/techsupport for more information or call Cisco TAC (1-800-553-2447).

2.7.10 APSCM

Default Severity: Minor (MN), Non-Service-Affecting (NSA)

SONET Logical Object: OCN

The APS Channel Mismatch alarm occurs when the ONS 15310-CL or ONS 15310-MA expects a

working channel but receives a protect channel. In many cases, the working and protect channels are

crossed and the protect channel is active. If the fibers are crossed and the working line is active, the alarm

does not occur. The APSCM alarm occurs only on the system when bidirectional protection is used on

OC-N ports in a 1+1 protection group configuration. The APSCM alarm does not occur in an optimized

1+1 protection configuration.

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