HP StorageWorks 4000 Compaq StorageWorks Fibre Channel Troubleshooting Guide - Page 57

Fibre Channel Loopback Test

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StorageWorks RAID Array 4000 and 4100 Troubleshooting Flow Charts 4-17 Fibre Channel Loopback Test Begin The Fibre Channel Loopback test is a method to verify proper function of cables, GBICs and nodes of your Fibre Array system on an isolated link. The test consists of running a diagnostic utility remotely through a serial port connection between the Fibre Array and a PC such as a laptop. To isolate the link, a loopback plug is used to close the circuit. This plug is part of the Fibre Channel Troubleshooting option kit (P/N 234468-B21) The Fibre Array User Diagnostics Utility (located on the SmartStart and Support Software CD) contains a Fibre Channel loopback test function. Load the utility on the remote computer. Fibre Channel loopback plug Use the serial cable found in the Fibre Channel Troubleshooting option kit to connect the remote computer to the Fibre Array. Remove the Fibre Channel cable from the GBIC at the Fibre Array. Insert the loopback plug into the GBIC. Run the diagnostic utility on the laptop or other computer. Remove the GBIC from the Fibre Array. Insert the GBIC from the Fibre Hub 7 into the Fibre Array. Insert the loopback plug into the GBIC. Run the diagnostics utility on the laptop or other computer. G Did the test pass? no yes G1

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StorageWorks RAID Array 4000 and 4100 Troubleshooting Flow Charts
4-17
Fibre Channel Loopback Test
Begin
The Fibre Channel Loopback test is a method to verify
proper function of cables, GBICs and nodes of your
Fibre Array system on an isolated link.
The test
consists of running a diagnostic utility remotely
through a serial port connection between the Fibre
Array and a PC such as a laptop.
To isolate the link, a
loopback plug is used to close the circuit.
This plug is
part of the Fibre Channel Troubleshooting option kit
(P/N 234468-B21)
The Fibre Array User Diagnostics Utility (located on
the SmartStart and Support Software CD) contains a
Fibre Channel loopback test function.
Load the utility
on the remote computer.
Use the serial cable found in the Fibre Channel
Troubleshooting option kit to connect the remote
computer to the Fibre Array.
Remove the Fibre Channel cable from the GBIC
at the Fibre Array.
Insert the loopback plug into
the GBIC.
Run the diagnostic utility on the laptop
or other computer.
Remove the GBIC from the Fibre Array.
Insert the
GBIC from the Fibre Hub 7 into the Fibre Array.
Insert the loopback plug into the GBIC.
Run the
diagnostics utility on the laptop or other computer.
G
G1
Did the test pass?
yes
no
Fibre Channel loopback plug