To isolate the a1 or b1 fc link, Quiesce the i/o on the a1 or b1 fc link path, Break the connection by uncabling the link – Sun Microsystems 6900 User Manual
Page 68: Insert a loopback connector into the switch port, Rerun switchtest, B. if switchtest fails again, replace the switch, Insert a loopback connector into the hba, Run qlctest, A. if the qlctest test fails, replace the hba, B. if the qlctest test passes, replace the cable
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Sun StorEdge 3900 and 6900 Series 2.0 Troubleshooting Guide • March 2003
Sun Proprietary/Confidential: Internal Use Only
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To Isolate the A1 or B1 FC Link
To isolate the A1 or B1 link, which is the FC link from the HBA to the switch, follow
these steps:
1. Quiesce the I/O on the A1 or B1 FC link path.
2. Run
switchtest(1M)
or
qlctest(1M)
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 gigabit interface converter (GBIC) and rerun
switchtest.
b. If
switchtest
fails again, replace the switch.
6. Insert a loopback connector into the HBA.
7. Run
qlctest
.
a. If the
qlctest
test fails, replace the HBA.
b. If the
qlctest
test passes, replace the cable.
8. Recable the entire link.
9. Run
switchtest
or
qlctest
to validate the fix.
10. Put the path back into production.