3com 4400 FX User Manual

HAPTER

4: P

ROBLEM

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Switch. The monitoring system polls the fan status at periodic intervals
while the unit is powered up.

If one fan has failed in the Switch, a warning message will be generated
in the following ways:

■

RMON Email Notification — If configured, you will receive
notification of the fan failure via email, SMS (Short Message Service),
or pager.

■

RMON Trap — If configured, an RMON trap is generated and sent to
the management workstation.

For further information about RMON, refer to “Chapter 7: Status
Monitoring and Statistics” in the Switch Implementation Guide supplied
in PDF format on the CD-ROM that accompanies the Switch.

If more than one fan has failed in the Switch, a warning message will be
generated by RMON Email Notification, RMON Trap and also in the
following ways:

■

Command Line Interface — An indication of a general hardware
failure is provided through the Top level menu displayed when logging
on to the CLI. For more detailed information about the failure select
the

system summary command.

■

Web interface — An indication of fan failure is provided through the
Device Summary table for the specific unit. In addition all Summary
tables turn red to indicate the fan failure.

If a fan failure warning message is generated:

1 Power off the unit.

2 Check that the air vents are not obstructed.

3 Power cycle the unit. To do this, remove and reconnect the AC mains

supply. If the unit has no AC main supply, remove and reconnect the DC
RPS supply.

4 If another fan failure warning message is generated via the Command

Line Interface or the Web interface, return the unit.

DUA1720-3AAA07.book Page 60 Wednesday, March 17, 2004 1:14 PM