SNMPAUTHFAIL despite (assumed) correct config

[trane.m]

I have configured a line of C1200 switches with SNMP so my Solarwinds instance at 172.22.101.67 can poll them. However, they produce error logs every ~30 secs. I cannot seem to find any relevant information about how to remove it or what is wrong with my config. I can conclude that Solarwinds is able to poll information from the switches.

Config: (sensitive information replaced)

snmp-server server
snmp-server location the_moon
snmp-server contact admin@company.com
snmp-server community snmp_secret ro 172.22.101.67 view Default

Error logs:

sh snmp:

There is a connection between Solarwinds and the switches, because as i already wrote once, Solarwinds polls data. There is an access-list locally on the switch and also on the firewall, permitting the traffic. Since Solarwinds polls data, i can only assume that the configuration of SNMP credentials and the switches are correct, which i have already triple-checked.

I know there is a command to disable these logs, but i don't want to ignore a problem or make it invisible; i want to understand the problem and solve it, if possible.

I am not a network professional or very knowledgeable about this. I am learning. I will provide any additional information needed.

[Cristian Matei]

Hi,

    Can you validate on the Solarwinds side that is not trying to also use SNMPv3 to this device, additionally to SNMP v2c?

Best,

Cristian.

[trane.m]

Hi Christian,

Thanks for the quick reply.

I dont know where validate this, but i deleted all SNMPv3 credentials on solarwinds, since we don't want to use SNMPv3. I haven't been able to find out where to disable SNMPv3 or whether it is possible at all.

[Cristian Matei]

Hi,

     Launch a debug and let's see the outputs:

logging console informational
logging monitor informational
logging buffered debugging
logging buffered 65535
!
debug snmp sessions
debug snmp requests
debug snmp packets

Collect the logs via "show logging" and disable debugs via "undebug all".

Best,

Cristian. 

[trane.m]

Hi again Christian,

Some of these commands i cannot run. It doesnt recognize the logging monitor command as well as the 3 debug commands Also the log buffer could only go to 1000 instead of 65K. In User exec mode i can run "debug" which puts me in a weird mode i havent tried before:

And then i guess the logs won't show what you need. This is a c1200 switch running v4.1.0.76 if that helps. Are there other commands i can use instead?