Cisco 15310-MA Instrukcja Naprawy Pobierz pdf (Strona 231)

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

78-18394-01

Chapter 2 Alarm Troubleshooting

Alarm Procedures

2.7.149 LOS (BITS)

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

SONET Logical Object: BITS

The LOS (BITS) alarm indicates that the 15310-CL-CTX or CTX2500 card has an LOS from the BITS

timing source. The LOS (BITS-N) means the BITS clock or the connection to it failed.

Clear the LOS (BITS) Alarm

Step 1 Verify the wiring connection from the BITS clock pin fields on the ONS 15310-CL or ONS 15310-MA

to the timing source.

Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL

or ONS 15310-MA.

Step 2 If wiring is good, verify that the BITS clock is operating properly.

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) in order to report a Service-Affecting (SA)

problem.

2.7.150 LOS (DS1)

Default Severity: Major (MJ), Service-Affecting (SA)

SONET Logical Object: DS1

An LOS (DS1) alarm for a DS-1 port on a 15310-CL-CTX, DS1-28/DS3-EC1-3, or DS1-84/DS3-EC1-3

card occurs when the port on the port is in service but no signal is being received. The cabling might not

be correctly connected to the port, or the line could have no signal.

Note When the ONS 15310-MA raises an LOF (DS1) or LOS (DS1) alarm, a path protection switch will

occur, but a PDI-P alarm will not be generated due to hardware limitations.

Clear the LOS (DS1) Alarm

Step 1 Verify that the cable is properly connected and attached to the correct port. For more information about

cable connections and terminations, refer to the “Install Hardware” chapter in the Cisco ONS 15310-CL

and Cisco ONS 15310-MA Procedure Guide.

Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL

or ONS 15310-MA.

Step 2 Consult site records to determine whether the port raising the alarm has been assigned.

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Cisco 15310-MA Instrukcja Naprawy Strona 231