IBM 02L1333 Troubleshooting, Is the Link, Status LED OFF?, Is the Far End

48271 NWAYS ETHERNET LAN SWITCH ATM OC-3C MODULE QUICK REFERENCE GUIDE

Troubleshooting

The most likely error at start-up time is a problem with the physical connection. Use Table 1 to iden- tify any problems you encounter after installation. If you cannot resolve the problem using the table, refer to the “Troubleshooting” appendix in the ATM Module User’s Guide.

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Table 1 Troubleshooting

1 Is the Link	Yes	Ensure that the port is turned on
Status LED OFF?		(enabled) at both ends of the link.
		You may need to reverse the Transmit
		and Receive connectors at one end of
	No	the link.
		Go to step 2.
2 Is the Far End	Yes	Ensure that the cable is not
Status LED OFF?		obstructed or damaged. Replace dam-
	No	aged cable.
		Go to step 3.

3Has the LEC joined the LANE service?

Check the

Last LEC Failure Reason field on the ATM VLAN LEC Status Screen, as described in the previous section of this guide.

Yes The Switch is operational, but there is a problem with the adjacent ATM Switch, or insufficient resources fur- ther along the network connection.

Check the ATM Connection using the Connection Table, as described in “Dis- playing an ATM Connection” within the “Managing the ATM Module” chapter of the ATM Module User’s Guide.

No

Ensure that you have completed the “Pre-Configuration Checklist” at the start of this guide.

Refer to the Last LEC Failure Reason troubleshooting table in the “ATM VLAN LEC Status” section of the “Monitoring the ATM Module” chap- ter of the ATM Module User’s Guide.

If you still cannot resolve the problem, refer to the “Troubleshooting” appen- dix in the User’s Guide.