HP StorageWorks 8/20q HP StorageWorks 8/20q Fibre Channel Switch installation - Page 52

Transceiver diagnostics

Page 52 highlights

Review the event browser to determine if excessive port errors are responsible for disabling the port. Look for a message that mentions one of the monitored error types indicating that the port has been disabled, then perform the following procedure: 1. Examine the alarm configuration for the associated error using the show config threshold CLI command. See the show config threshold CLI command in the HP StorageWorks 8/20q Fibre Channel Switch command line interface guide. Are the thresholds and sample window correct? • Yes-Continue • No-Correct the alarm configuration. If the condition remains, continue. 2. Reset the port, then perform an external port loopback test to validate the port and the SFP. For information about testing ports, see the HP StorageWorks 8/20q Fibre Channel Switch command line interface guide or the HP StorageWorks 8/20q Fibre Channel Switch QuickTools switch management user guide. Does the port pass the test? • Yes-Continue • No-Replace the SFP and repeat the test. If the port does not pass the test, contact your authorized maintenance provider. Otherwise continue. 3. Replace the Fibre Channel port cable. Is the problem corrected? • Yes-The procedure is complete. • No-Continue. 4. Inspect the device to which the affected port is connected and confirm that the device and its HBA are working properly. Make repairs and corrections as needed. If the condition remains, contact your authorized maintenance provider. Transceiver diagnostics You can display the following transceiver information using the show media CLI command: • Port number • Manufacturer • Temperature (°C) • Operating voltage (volts) • Transmitter bias (milliamps) • Transmitter power (milliwatts) • Receiver power (milliwatts) The display indicates warning and alarm conditions for both high and low values. 52

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52
Review the event browser to determine if excessive port errors are responsible for disabling the port. Look
for a message that mentions one of the monitored error types indicating that the port has been disabled,
then perform the following procedure:
1.
Examine the alarm configuration for the associated error using the
show config threshold
CLI
command. See the
show config threshold
CLI command in the
HP StorageWorks 8/20q Fibre
Channel Switch command line interface guide
. Are the thresholds and sample window correct?
Yes—Continue
No—Correct the alarm configuration. If the condition remains, continue.
2.
Reset the port, then perform an external port loopback test to validate the port and the SFP. For
information about testing ports, see the
HP StorageWorks 8/20q Fibre Channel Switch command line
interface guide
or the
HP StorageWorks 8/20q Fibre Channel Switch QuickTools switch management
user guide
. Does the port pass the test?
Yes—Continue
No—Replace the SFP and repeat the test. If the port does not pass the test, contact your authorized
maintenance provider. Otherwise continue.
3.
Replace the Fibre Channel port cable. Is the problem corrected?
Yes—The procedure is complete.
No—Continue.
4.
Inspect the device to which the affected port is connected and confirm that the device and its HBA are
working properly. Make repairs and corrections as needed. If the condition remains, contact your
authorized maintenance provider.
Transceiver diagnostics
You can display the following transceiver information using the
show media
CLI command:
Port number
Manufacturer
Temperature (°C)
Operating voltage (volts)
Transmitter bias (milliamps)
Transmitter power (milliwatts)
Receiver power (milliwatts)
The display indicates warning and alarm conditions for both high and low values.