Determining the Failing SecureStack Unit from a Fan Failure Trap

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Article ID: 13323 

SecureStack C3, C2, B3, B2, A2
NetSight Console 

Determining the failing unit from a fan failure syslog message is explained in 5743

Fan failure traps are not specifically controllable but may be generated from the fanFail section of the cabletron-traps MIB, when traps are enabled and a fan has failed. 

In NetSight Console, the trap summary line looks something like:
 Notice  SNMP v2  09/09/2010 01:28:27 PM  ---  SNMP Trap  Trap  fanFail  Fan Failure.
Double-clicking on a summary line to pull up event details looks something like:
 Timestamp:   09/09/2010 01:28:27 PM      Acknowledged: No
Type: Trap Source:
Event Name: fanFail Client: ---
Severity: Notice User: SNMP Trap
Category: SNMP v2

Information: Fan Failure.

Enterprise: Cabletron Trap Number: .

Description: This trap is generated when the device detects that
the system fans have failed.
Such traps are not formulated to provide detailed information of the failing unit within a stacked topology, however do serve the purpose of alerting the network administrator to look in the syslog for more detailed diagnostic information. 

If a current syslog repository is not available in NetSight or some other network management application, a current.log (5487) file would provide fan failure information for a standalone or a stack, with any firmware version. A simpler approach that would work for this purpose is to issue a 'show support' command while running "higher firmware". The items listed at the end of that output - as read from the manager unit - may be interpreted as explained in 5743.
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