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Polling Fan Status Using SNMP Returns Status Unknown

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TitlePolling Fan Status Using SNMP Returns Status Unknown
Symptoms
  • Switch polled for fan status running VOSS 6.1.4 code and returns status (2) up
root@XMC:/usr/bin$ snmpgetnext -v 2c -c public 10.10.10.64 1.3.6.1.4.1.2272.1.4.7.1.1.2
iso.3.6.1.4.1.2272.1.4.8.1.1.1.1 = INTEGER: 2
  • Switch upgraded to VOSS 7.0 and polling fan status returns status (1) unknown
root@XMC:/usr/bin$ snmpgetnext -v 2c -c public 10.10.10.64 1.3.6.1.4.1.2272.1.4.7.1.1.2
iso.3.6.1.4.1.2272.1.4.7.1.1.2.1 = INTEGER: 1
  • MIB polled is rcChasFanOperStatus
rcChasFanOperStatus OBJECT-TYPE
	SYNTAX        INTEGER {
		         unknown(1),
		         up(2),
		         down(3),
			 notpresent(4)
	              }
	MAX-ACCESS    read-only
	STATUS        current 
	DESCRIPTION   "Actual status of the Fan:
	              - unknown(1) - status can not be determined.
	              - up(2) - present and supplying power.
	              - down(3) - present, but failure indicated."
	::= { rcChasFanEntry 2 }


 
Environment
  • VSP Platform
  • VOSS 7.x
Cause
Product functioning as designed
Resolution
  • As of VOSS 7.0, rcChasFanOperStatus MIB was deprecated and new MIB rcVossSystemFanInfoOperStatus used for fan status
rcVossSystemFanInfoOperStatus OBJECT-TYPE
	SYNTAX        INTEGER {
		         unknown(1),
		         up(2),
		         down(3),
			 notpresent(4)
	              }
	MAX-ACCESS    read-only
	STATUS        current 
	DESCRIPTION   "Actual status of the FanInfo:
	              - unknown(1) - status can not be determined.
	              - up(2) - present and supplying power.
	              - down(3) - present, but failure indicated."
	::= { rcVossSystemFanInfoEntry 4 }


 
Additional notes
For more information, see page 116 of VOSS 7.0 release notes

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