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McDATA 4314 Fibre Channel Switch Module Installation Guide
4-4
Recovering a Switch Module
Port threshold alarm monitoring is disabled by default. Refer to the EFCM
Basic Management Guide for information about managing port threshold
alarms.
If the count for any of these errors exceeds the rising trigger for three
consecutive sample windows, the switch generates an alarm and disables the
affected port, changing its operational state to “down”. Port errors can be
caused by the following:
• Triggers are too low or the sample window is too small
• Faulty Fibre Channel port cable
• Faulty SFP
• Faulty port
• Fault device or HBA
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 do
the following:
1. Examine the alarm configuration for the associated error using the Show
Config Threshold command or the EFCM BASIC application. Refer to the
McDATA 4314 Command Line Interface Guide for information about this
command. 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. Refer to the EFCM Basic Management Guide for
information about testing ports. 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 - 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.
Recovering a Switch Module
A switch can become inoperable or unmanageable for the following reasons:
• Firmware becomes corrupt
•IP address is lost
• Switch configuration becomes corrupt