Peer-Noresponse; Plm-P - Cisco ONS 15327 User Documentation

Chapter 14 Alarm Troubleshooting

14.4.93 PEER-NORESPONSE

•
The switch agent raises a peer card not responding (PEER-NORESPONSE) alarm if either traffic card
in a protection group does not receive a response to the peer-status request message. This is a software
failure and occurs at the task level, as opposed to a communication failure, which is a hardware failure
between peer cards.
Procedure: Clear the PEER-NORESPONSE Alarm Reported on XTC or OC-N Card
Right-click the card reporting the alarm.
Step 1
Click Reset Card and OK on the confirmation dialog.
Step 2
Wait for the card to reset.
Step 3
Step 4 At reset, the green Act LED on the card is replaced on the CTC by a white Ldg LED. When the card
finishes resetting, the green Act LED reappears.
Step 5 Right-click the peer card of the card reporting the alarm.
Click Reset Card and OK on the confirmation dialog.
Step 6

14.4.94 PLM-P

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A payload label mismatch path (PLM-P) alarm indicates an SLMF. An invalid C2 byte in the SONET
path overhead causes an SLMF. The C2 byte is the signal label byte. This byte tells the equipment what
the SONET payload envelope contains and how it is constructed. It enables a SONET device to transport
multiple types of services.
The ONS 15327 encounters an SLMF when the payload, such as a DS-3 signal, does not match what the
signal label is reporting. An AIS alarm often accompanies the PLM-P alarm. If the PLM-P is the only
alarm reported with the AIS, clearing the PLM-P alarm clears the AIS alarm.
Invisible laser radiation may be emitted from the aperture ports of the single-mode, fiber-optic
Warning
modules when no cable is connected. Avoid exposure and do not stare into open apertures.
Caution Always use the supplied ESD wristband when working with a powered ONS 15327. Plug the wristband
cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
Procedure: Clear the PLM-P Alarm Reported on the XTC Card
Verify that all circuits terminating in the reporting card are active:
Step 1
a.
b.
June 2002
Major, Non-Service-Affecting
Critical, Service-Affecting
Click the Circuits tab.
Verify that the State column lists the port as ACTIVE.
Cisco ONS 15327 User Documentation, R3.3
Alarm Procedures
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