Re: [Testbed-admins] Debug snmpit

[Robert Ricci <ricci@cs.utah.edu>]

Debugging SNMP problems in general is a sort of a dark art. :)


'noCreation', the error you got, generally means that you are trying to 
access an SNMP object that doesn't exist, and the switch will not 
'automatically create' such an object. I've seen this most often when 
the index within a table is incorrect - eg. below, it's trying to set 
object 2.26 and 2.37 in the portAdminSpeed and portDuplex tables, which 
would lead me to guess that one of two thing is the case:

1) Ports 2/26 and 2/37 don't exist in your switch
2) This is on a switch that needs indexing by ifIndex rather than card 
and port - eg. an issue of Cisco IOS vs. CatOS - what kind of switch is 
this, and if it's a Cisco, did you make sure to follow the bits in the 
setup instructions that indicated which OS the switch is running?

The snmpget and snmpwalk command line tools can be useful for diagnosing 
these sorts of problems - you can make sure the tables do exist, find 
out what the indices look like, etc.

On 6/21/10 1:37 PM, Spies, Sebastian Martin wrote:
> Hi,
>
> which one is the best way to debug snmpit? I’m struggling with the
> following errors:
>
> *** WARNING: snmpit:
>
> *** SNMP SET failed - In /usr/testbed/bin/snmpit
>
> *** SNMPIT set failed for device expswitch1 (try 10 of 10)
>
> *** Variable was [portAdminSpeed,2.26,1000000000,INTEGER]
>
> *** Returned (undefined), ErrorNum was 11
>
> *** Error string is: noCreation
>
> *** WARNING: snmpit:
>
> *** SNMP SET failed - In /usr/testbed/bin/snmpit
>
> *** SNMPIT set failed for device expswitch1 (try 10 of 10)
>
> *** Variable was [portDuplex,2.26,2,INTEGER]
>
> *** Returned (undefined), ErrorNum was 11
>
> *** Error string is: noCreation
>
> *** WARNING: snmpit:
>
> *** SNMP SET failed - In /usr/testbed/bin/snmpit
>
> *** SNMPIT set failed for device expswitch1 (try 10 of 10)
>
> *** Variable was [portAdminSpeed,2.37,1000000000,INTEGER]
>
> *** Returned (undefined), ErrorNum was 11
>
> *** Error string is: noCreation
>
> Creating VLAN 16 as VLAN #3 on stack Experiment ...
>
>     Creating VLAN 16 as VLAN #3 on expswitch1 ... Succeeded.
>
>         Applying VLAN changes on expswitch1 ... Succeeded
>
> Do you have some idea? Help would be greatly appreciated.
>
> Sebastian
>
> ----
>
> Sebastian Spies
>
> Advanced Network Technologies Devision
>
> National Institute of Standards and Technology
>
> phone: 301-975-3259
>
>
>
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