Specifications

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Channelized and Electrical Interface Line Card Installation and Configuration
78-16417-02
Configuring and Troubleshooting Line Card Interfaces
Fabric Ping Failure
Fabric ping failures occur when either a line card or the secondary RP fails to respond to a fabric ping
request from the primary RP over the switch fabric. Such failures are a problem symptom that should be
investigated. They are indicated by the following error messages:
%GRP-3-FABRIC_UNI: Unicast send timed out (1)
%GRP-3-COREDUMP: Core dump incident on slot 1, error: Fabric ping failure
%LCINFO-3-CRASH: Line card in slot 1 crashed
You can find more information about this issue on Cisco.com in the Troubleshooting Fabric Ping
Timeouts and Failures on the Cisco 12000 Series Internet Router publication.
Error Messages
If you receive any error message related to a line card, you can use the Error Message Decoder Tool (on
Cisco.com) to find the meaning of this error message. Some errors point to a hardware issue, while others
indicate a Cisco IOS software caveat or a hardware issue on another part of the router. This publication
does not cover all these messages.
Note Some messages related to Cisco Express Forwarding (CEF) and Inter Process-Communication (IPC) are
explained on Cisco.com in the Troubleshooting CEF-Related Error Messages publication.
Line Card Alarm and Event Detection
This section assumes that you are familiar with SONET/SDH alarm and signal events for SONET line
cards and DS3/E3 alarms and line states for DS3/E3 line cards. Your line card does not have an LED for
alarm and event detection, but you can enter the show controllers EXEC command to verify whether
the alarm and event detection messages are active or inactive. Most alarm and event detection messages
are short-lived, because if problems occur, the line card clears the error condition, but records the event
to verify line card operation status.
To display SONET alarms, use the show controllers sonet command; to display DS3 or E3 alarms, use
the show controllers serial command.
The output from the show controllers serial slot/port EXEC command sends messages about the
following types of alarms and events:
• AIS (Alarm Indication Signal)
• LOF (Loss of Frame)
• LOS (Loss of Signal)
• OOF (Out of Frame)
• RAI (Remote Alarm Indication)
The output also indicates whether the alarm or event originates from the local end connector or the
remote end connector.
Some of the alarm and signal events for the SONET line cards are enabled for reporting by default.
Others can be enabled individually. What the show controllers sonet privileged EXEC command
displays depends on the configuration of the SONET port.