To Isolate the A1/B1 FC Link

1.Quiesce the I/O on the A1/B1 FC link path.

2.Run switchtest or qlctest to test the entire link.

3.Break the connection by uncabling the link.

4.Insert a loopback connector into the switch port.

5.Rerun switchtest.

a.If switchtest fails, replace the GBIC and rerun switchtest.

b.If switchtest fails again, replace the switch.

6.Insert a loopback connector into the HBA.

7.Run qlctest.

If the test fails, replace the HBA.

If the test passes, replace the cable.

8.Recable the entire link.

9.Run switchtest or qlctest to validate the fix.

10.Return the path to production.

28 Sun StorEdge 3900 and 6900 Series Troubleshooting Guide • March 2002

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Sun Microsystems 6900 Series, 3900 Series manual To Isolate the A1/B1 FC Link