Cisco ONS 15310-CL, Руководство по устранению неисправностей

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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
78-17235-01
Chapter 1 Alarm Troubleshooting
1.7.143 LOP-V
Step 4
If the error is not due to an incorrectly configured test set, the error is in the provisioned CTC circuit
size. Complete the
“Delete a Circuit” procedure on page 1-156 .
Step 5 Recreate the circuit for the correct size. For procedures, refer to the “Create Circuits” chapter in the
Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide .
Step 6
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.
1.7.143 LOP-V
Default Severity: Major (MJ), Service-Affecting (SA)
SONET Logical Objects: VT-MON, VT-TERM
The LOP VT alarm indicates a loss of pointer at the VT level. This alarm can occur when the received
payload does not match the provisioned payload. LOP-V is caused by a circuit size mismatch on the
concatenation facility.
Clear the LOP-V Alarm
Step 1 Complete the “Clear the LOP-P Alarm” procedure on page 1-92 .
Step 2
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.
1.7.144 LO-RXPOWER
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
The Equipment Low Receive Power alarm is an indicator for OCN port received optical signal power.
LO-RXPOWER occurs when the measured optical power of the received signal falls below the threshold
value, which is user-provisionable.
Clear the LO-RXPOWER Alarm
Step 1
At the transmit end of the errored circuit, increase the transmit power level within safe limits.
Step 2 Find out whether new channels have been added to the fiber. The number of channels affects power. If
channels have been added, power levels of all channels need to be adjusted.
Step 3
Find out whether gain (the amplification power) of any amplifiers has been changed. Changing
amplification also causes channel power to need adjustment.
Step 4 If the alarm does not clear, remove any receive fiber attenuators or replace them with lower-resistance
attenuators.