Just a quick one today. Ever so often, you need to check the status of a the
power supplies in a switch or router. That information is nestled snugly in the
show environment command. I'll give you the proper syntax and results for a
few different platforms.
Example 1. Cisco 2611XM running Cisco IOS Software, C2600 Software (C2600-ADVIPSERVICESK9-M), Version 12.4(13a), RELEASE SOFTWARE (fc1)
SLAP1#show environment Power Supply: Redundant Power System is not present. Board Temperature: normal.
Example 2. Cisco 7206XVR running Cisco IOS Software, 7200 Software (C7200-SPSERVICESK9-M), Version 12.4(15)T1, RELEASE SOFTWARE (fc2)
SLAP2#show environment all Power Supplies: Power Supply 1 is AC Power Supply. Unit is on. Power Supply 2 is AC Power Supply. Unit is off. Temperature readings: NPE Inlet measured at 31C/87F NPE Outlet measured at 36C/96F Voltage readings: +3.45 V measured at +3.45 V +5.15 V measured at +5.21 V +12.15 V measured at +12.24 V -11.95 V measured at -11.81 V Envm stats saved 3 time(s) since reload
Example 3. Cisco Catalyst 2960 running Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(37)SE1, RELEASE SOFTWARE (fc1)
SLAP3#show env power POWER is OK SLAP3#show env all FAN is OK TEMPERATURE is OK POWER is OK RPS is NOT PRESENT
A quick note on the output of the Catalyst 2960.
show env power only shows
the status of the built-in power supply. If you are using an RPS on this system,
you need to use
show env all to get the RPS status, as well.