Monitoring 3750x and 3560x Redundant Power Supply and Fans

[necxzcisco]

I need help for monitoring the redundant power supply of my switches (3750x and 3560x)

I have configured my snmp on my switches and is able to monitor interfaces, temperature and etc.

The problem is when I am monitoring the redundant power supply and fans.

I am using two Cisco C3KX-PWR-350WAC Modular Power Supply per switch.

The OID I use to monitor the PSU are the following:

Power Supply 1
.1.3.6.1.4.1.9.9.13.1.5.1.3 Instance: 1003

Power Supply 2
.1.3.6.1.4.1.9.9.13.1.5.1.3 Instance: 1004

When I do an SNMP walk, the value is showing (1) which means normal.

When I simulate a power outage on power supply 1 or 2 by unplugging the power source, the value doesn't change and is still (1).

Values: normal(1), warning(2), critical(3), shutdown(4), notPresent(5)

As for the Fans:

When I remove the fan module, I am able to get a notification that the fans are down, but when I plug back the fan module it is now using a different instance.

Below is my config for SNMP:

snmp-server community XXXXXXXXXXXXXX RO
snmp-server location XXXXXX
snmp-server contact XXXXXX
snmp-server chassis-id Cisco3560X
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps transceiver all
snmp-server enable traps tty
snmp-server enable traps license
snmp-server enable traps cpu threshold
snmp-server enable traps syslog
snmp-server enable traps vlancreate
snmp-server enable traps vlandelete
snmp-server enable traps port-security
snmp-server enable traps envmon fan shutdown supply temperature status
snmp-server enable traps errdisable
snmp-server enable traps vlan-membership
snmp-server host X.X.X.X version 2c XXXXXXXXXXXXXX
 

Note: This problem is the same for all of my 3560X switches and 3750X switches. I am not sure if I am monitoring the wrong OID. 

Thanks in advance

[AFROJ AHMAD]

Hi ,

the OID you are using are correct , there are quite a known issue with monitoring RPS via SNMP.

CSCud01798    "FRU Power Supply is not responding" was seen unexpectedly

CSCsq77660    ciscoEnvMonSupplyState returns notPresent

I would suggest to use CLI to check the power supply status.

Thanks-

Afroz

***Ratings Encourages Contributors ****

[necxzcisco]

Hi Afrahmad,

When I use " show environment all " 

The state of the RPS seems to be reflected.

I tried removing the power cable for PSU1 and ran " show environment all "

It is properly showing that PSU1 is down/ faulty.

Also I would like to add that the correct traps are also being sent out by the Switch and are received by the NMS.

So I am wondering if there are other OID which I can use to monitor my Redundant PSU and Modular Fans.

[AFROJ AHMAD]

Hi ,

try this

Object     ciscoEnvMonSupplyStatusDescr OID     1.3.6.1.4.1.9.9.13.1.5.1.2

As I said ,this is a buggy behaviour , you might not be able to see the correct information via SNMP

workaround: use CLI commands

Thanks-

Afroz

***Ratings Encourages Contributors ***

[necxzcisco]

Hi Afrahmad,

I am confused. Is there a way to use CLI for NMS? 

Can you enlighten me regarding this matter, I am not so experienced with monitoring system.

Your help is highly appreciated.

[AFROJ AHMAD]

what is the IOS code you are running ?

[necxzcisco]

Currently I am running the ff:

12.2(58)SE2 for the 3750x

12.2(53)SE2 for the 3560X

Sorry for the late response. I needed to ran back to the rack room

[AFROJ AHMAD · Accepted solution]

Hi ,

You are running an old IOS code , definitely you are hitting a BUG .

there is no workaround or I would say unfirtunetely you will not be able to get the correct power supply status via SNMP.

you need to use command line for this.

I mean "show env all "

**** if you want to know the Excat BUG that your code is hitting ,please contact TAC.

Thanks-

Afroz

**Ratings Encourages Contributors ****

[necxzcisco]

Will this be fixed if I upgrade the firmware?  

Thanks for all the help

[AFROJ AHMAD · Accepted solution]

most of them are fixed in latest IOS code , you check internally and plan for latest IOS upgrade.

hopefully it will work fine then..

Thanks-

Afroz

***ratings Encourages Contributors ***

[necxzcisco]

Hi Afrahmad,

Okay, I shall try upgrading one of my switches and hopefully it fixes the bugs.

Thank you very much for all your help.

Have a great day!

Franz

UPDATE:

I have upgraded the firmware from IOS 12.2(53)SE2 to 15.02-SE6 and now I am able to get the proper status of the PSU and FAN.

But still once I remove the Module, the instance still changes.

Maybe that is how cisco designed the FRU modules.