DFM and Redundant Power

Unanswered Question
May 28th, 2008
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Can DFM alert if RPS fails?

For example I have a 3750 stack of 6 switches on one RPS2600. If the RPS fails or looses power but the 3750s are OK running on their primary power, can I get an alert?

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Overall Rating: 4 (1 ratings)
Joe Clarke Wed, 05/28/2008 - 09:46
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I don't have a 3750 with an RPS which which to test, but if you go to DFM > Device Management > Device Details and launch the Detailed Device View for this switch, do you see any Power Supply objects under the Environment folder?

9tgonzalez Wed, 05/28/2008 - 11:28
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I see the primary power supply status (all 6 from the stack) but there is no redundant status.


Joe Clarke Wed, 05/28/2008 - 11:36
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Please post an snmpwalk of

9tgonzalez Wed, 05/28/2008 - 14:05
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Here is the snmpwalk, Thanks:

SNMP Walk Output



CISCO-ENVMON-MIB::ciscoEnvMonSupplyStatusDescr.1003 = STRING: Sw1, PS1 Normal, RPS Normal

CISCO-ENVMON-MIB::ciscoEnvMonSupplyStatusDescr.2003 = STRING: Sw2, PS1 Normal, RPS Normal

CISCO-ENVMON-MIB::ciscoEnvMonSupplyStatusDescr.3003 = STRING: Sw3, PS1 Normal, RPS Normal

CISCO-ENVMON-MIB::ciscoEnvMonSupplyStatusDescr.4003 = STRING: Sw4, PS1 Normal, RPS Normal

CISCO-ENVMON-MIB::ciscoEnvMonSupplyStatusDescr.5003 = STRING: Sw5, PS1 Normal, RPS Normal

CISCO-ENVMON-MIB::ciscoEnvMonSupplyStatusDescr.6003 = STRING: Sw6, PS1 Normal, RPS Normal

CISCO-ENVMON-MIB::ciscoEnvMonSupplyState.1003 = INTEGER: normal(1)

CISCO-ENVMON-MIB::ciscoEnvMonSupplyState.2003 = INTEGER: normal(1)

CISCO-ENVMON-MIB::ciscoEnvMonSupplyState.3003 = INTEGER: normal(1)

CISCO-ENVMON-MIB::ciscoEnvMonSupplyState.4003 = INTEGER: normal(1)

CISCO-ENVMON-MIB::ciscoEnvMonSupplyState.5003 = INTEGER: normal(1)

CISCO-ENVMON-MIB::ciscoEnvMonSupplyState.6003 = INTEGER: normal(1)

CISCO-ENVMON-MIB::ciscoEnvMonSupplySource.1003 = INTEGER: ac(2)

CISCO-ENVMON-MIB::ciscoEnvMonSupplySource.2003 = INTEGER: ac(2)

CISCO-ENVMON-MIB::ciscoEnvMonSupplySource.3003 = INTEGER: ac(2)

CISCO-ENVMON-MIB::ciscoEnvMonSupplySource.4003 = INTEGER: ac(2)

CISCO-ENVMON-MIB::ciscoEnvMonSupplySource.5003 = INTEGER: ac(2)

CISCO-ENVMON-MIB::ciscoEnvMonSupplySource.6003 = INTEGER: ac(2)

Joe Clarke Wed, 05/28/2008 - 17:21
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The state should change to critical when the main PS switches to the RPS. This will trigger an event in DFM.

9tgonzalez Thu, 05/29/2008 - 06:07
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I was hoping to get an alert if the RPS lost power. Last week I discovered a power cord for RPS supplying backup power for 6 3750 switches was unplugged. It would be nice if there was a way to be alerted if the RPS is not available even if the 3750s have primary power.

Joe Clarke Thu, 05/29/2008 - 07:52
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Based on your SNMP output, it does not appear the 3750s have the instrumentation to provide such data.


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