[mrtg] Intermittent but constant polling error

Mersberger, Robert robert.mersberger at goldenliving.com
Wed Aug 20 18:53:42 CEST 2008

I have changed my setting as per below and will see if that helps,  I
should have thought of that avenue myself.  Thanks for the help.


From: mrtg-bounces at lists.oetiker.ch
[mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Steve Shipway
Sent: Tuesday, August 19, 2008 5:45 PM
To: Mersberger, Robert; 'mrtg at lists.oetiker.ch'
Cc: 'mrtg-bounces at lists.oetiker.ch'
Subject: Re: [mrtg] Intermittent but constant polling error

Is the switch particularly heavily loaded?  It may be that the SNMP
queries are being dropped due to load.  Try increasing your retries or
response timeout in the SNMP options, this may help.  The full syntax


community at hostname[:port[!localaddr[!localport]][:timeout[:retries[:back


the default is:


community at hostname:161:2:5:1:1


maybe you should try:


community at hostname::5:::2


which will use SNMPv2 (better) and do a 5sec timeout instead of 2s.


Incidentally, you just told the world your SNMP community string :-)




Below is an error message that I have been getting at least once each
hour from only the two switches in this enclosure.  I have 6 other
enclosures with the same type (Gbe2) switches that are all configured
the same as these two and I never get this error from them.  I can do an
snmpwalk from my mrtg server and it is successful.  I have tried
changing from SNMP V1 to V2c but it does not make the problem go away.

DOES ANYONE have any Ideas as to what might be causing this problem  or
how to correct it. 

SNMP Error: 
no response received 

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