10-27-2004 11:04 AM
Does anybody know how to use SNMP to monitor the status of the internal power supplies of a group of stacked Cisco 3750 switches?
The switch stack has three 3750-48PS-E switches inter-connected by Cisco StackWise cable. IOS ver 12.1(19)EAlc. A single IP address is used to identify the switch stack. Every time I poll the OID chassisPs1Status (1.3.6.1.4.1.9.5.1.2.4.0 in CISCO-STACK-MIB), I only got the status for the Master switch of the switch stack. Is there any way to poll the power supply status of other switches in the switch stack?
Thanks a lot!
Solved! Go to Solution.
10-28-2004 09:56 AM
Hi Joseph,
You are going to need to walk CISCO-ENVMON-MIB for the TEMP/PowerSupply/FAN status of 3750's in stacks. Here are some specific OID's:
1.3.6.1.4.1.9.9.13.1.4.1.2 ciscoEnvMonSupplyState
1.3.6.1.4.1.9.9.13.1.5.1.2 ciscoEnvMonSupplyStatusDescr
I have checked this in Solarwinds on my 3750 stack and it works perfectly. Hope this helps
Kersean Rozier
10-27-2004 11:41 AM
Without having individual ip add assigned to the stack switches, don't think you can poll them for the status.
10-28-2004 09:56 AM
Hi Joseph,
You are going to need to walk CISCO-ENVMON-MIB for the TEMP/PowerSupply/FAN status of 3750's in stacks. Here are some specific OID's:
1.3.6.1.4.1.9.9.13.1.4.1.2 ciscoEnvMonSupplyState
1.3.6.1.4.1.9.9.13.1.5.1.2 ciscoEnvMonSupplyStatusDescr
I have checked this in Solarwinds on my 3750 stack and it works perfectly. Hope this helps
Kersean Rozier
10-29-2004 10:22 AM
Hi Kersean
Your tip works!!!
The OIDs work for me are:
ciscoEnvMonSupplyStatusEntry.4.1003 --> switch #1 PS
ciscoEnvMonSupplyStatusEntry.4.2003 --> switch #2 PS
and so on...
Thank you so much!
02-04-2005 05:22 AM
I take it if you have 3 switches then the following is correct ?
ciscoEnvMonSupplyStatusEntry.4.1003 --> switch #1 PS
ciscoEnvMonSupplyStatusEntry.4.2003 --> switch #2 PS
ciscoEnvMonSupplyStatusEntry.4.3003 --> switch #3 PS
02-04-2005 05:48 PM
Yes, it's correct. You can have up to 9 switches in the stack.
02-02-2010 07:51 AM
Sorry to refresh such an old topic - but I am stuck with exactly this: Monitoring power supplies of a stacked Cisco Catalyst 3750-E.
I'm using the exact same OID's as described, but the problem is, the information shown on the SNMP output is not correct.
This morning, a power supply of the first switch failed and switched to RPS. Here the information I got on SNMP:
snmpwalk -v 2c -c public 192.168.1.50 1.3.6.1.4.1.9.9.13.1
SNMPv2-SMI::enterprises.9.9.13.1.1.0 = INTEGER: 13
SNMPv2-SMI::enterprises.9.9.13.1.3.1.2.1006 = STRING: "SW#1, Sensor#1, GREEN "
SNMPv2-SMI::enterprises.9.9.13.1.3.1.2.2006 = STRING: "SW#2, Sensor#1, GREEN "
SNMPv2-SMI::enterprises.9.9.13.1.3.1.3.1006 = Gauge32: 41
SNMPv2-SMI::enterprises.9.9.13.1.3.1.3.2006 = Gauge32: 40
SNMPv2-SMI::enterprises.9.9.13.1.3.1.4.1006 = INTEGER: 59
SNMPv2-SMI::enterprises.9.9.13.1.3.1.4.2006 = INTEGER: 59
SNMPv2-SMI::enterprises.9.9.13.1.3.1.5.1006 = INTEGER: 0
SNMPv2-SMI::enterprises.9.9.13.1.3.1.5.2006 = INTEGER: 0
SNMPv2-SMI::enterprises.9.9.13.1.3.1.6.1006 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.13.1.3.1.6.2006 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.13.1.4.1.2.1060 = STRING: "Switch#1, Fan#1"
SNMPv2-SMI::enterprises.9.9.13.1.4.1.2.2059 = STRING: "Switch#2, Fan#1"
SNMPv2-SMI::enterprises.9.9.13.1.4.1.3.1060 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.13.1.4.1.3.2059 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.13.1.5.1.2.1059 = STRING: "Sw1, PS1 Normal, RPS NotExist"
SNMPv2-SMI::enterprises.9.9.13.1.5.1.2.2060 = STRING: "Sw2, PS1 Normal, RPS NotExist"
SNMPv2-SMI::enterprises.9.9.13.1.5.1.3.1059 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.13.1.5.1.3.2060 = INTEGER: 1
SNMPv2-SMI::enterprises.9.9.13.1.5.1.4.1059 = INTEGER: 2
SNMPv2-SMI::enterprises.9.9.13.1.5.1.4.2060 = INTEGER: 2
As you see, both PS1 (for both switches) are appearing normal. It doesn't even recognize RPS:
SNMPv2-SMI::enterprises.9.9.13.1.5.1.2.1059 = STRING: "Sw1, PS1 Normal, RPS NotExist"
SNMPv2-SMI::enterprises.9.9.13.1.5.1.2.2060 = STRING: "Sw2, PS1 Normal, RPS NotExist"
The first switch's power supply died and now the cable is disconnected. LED's of the power supply are out. And still: The switch happily announces by SNMP it's power supplies are up.
Is this a known bug? If yes, has it been fixed?
Model WS-C3750E-48TD
Firmware 12.2(37)SE1
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide