Installation guide

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Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 4 Troubleshooting the IGX
Troubleshooting an IGX Node
Step 4 Call the telephone carrier to verify that they are testing the E1 span, and ask them to indicate when they
have completed their tests. Monitor the system to ensure that the loopback indication disappears when
testing is completed.
Step 5 Make a note of the alarm steps taken, and call Cisco TAC. For more information, refer to the “Obtaining
Technical Assistance” section on page xxiii.
Troubleshooting Failed Cards
Step 1 Use the dspcds command to determine which card has failed, along with its status (active or standby).
Step 2 Use the dsplog command to determine the time of day the card failed and whether or not any connections
using this card are also in a failed condition.
Step 3 If the failed card is an HDM or LDM card, use the dspbob command at each end of the connection, using
this card to verify that data is passing. For a CDP, CVM, or UVM, use the dspchstats command.
Step 4 If a card has failed, make a note of the steps taken, and call Cisco TAC (see the “Obtaining Technical
Assistance” section on page xxiii).
Troubleshooting Unreachable Nodes
Step 1 At any node, use the dsplog command to determine the date and time of day that the node became
unreachable. A node is usually unreachable because of a trunk failure or a power outage.
Step 2 Contact personnel at that node to determine if there was a power failure at the time logged by the IGX
node.
Step 3 If there was a power failure, check that NPM comes up, and run diagnostics.
Step 4 If there was not a power failure, call Cisco TAC. For more information, refer to the “Obtaining Technical
Assistance” section on page xxiii.
Troubleshooting Clock Over Speed
Step 1 Use the dspbob command to determine the incoming baud rate for this connection.
Step 2 Use the dspcon command to verify that the console incoming baud rate is the same as the configured
baud rate.
Step 3 Reconfigure the incoming baud rate to match the configured baud rate.
Step 4 Make a note of the steps taken, and call Cisco TAC. For more information, refer to the “Obtaining
Technical Assistance” section on page xxiii.