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Jan 072013

The nexus series switches return an integer value of 4 when it detects a power failure and integer value of 2 if operational.

The power labels are 470 or 471 if the power supply of the switch is damaged. The label 470 and 471 relates to the power supply unit 1 and 2 respectively.

If a fabric extender detects a power unit failure, it returns an integer of 4 for the labels fex_number_000470 and fex_number_000471. For example if the fabric extender attached has an association number of 111, the label will be 111000470 for power supply unit 1 and 111000471 for power supply unit 2.

snmpwalk -c public -v 2c | grep -i "INTEGER: 4"

SNMPv2-SMI::enterprises. = INTEGER: 4

In the above example the power supply unit 2 of the switch is failed.