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Frequent SNMP sensor timeout

Votes:

0

Hi

I've a PRTG deployment with approximatelly 800+ sensors. Since about 2 months I'm experiencing timeouts with the snmp sensors of any device, it's beacoming very anoying because sometimes those sensors go down and inmediately after go up again. Here are a few log examples:

01/03/2018 16:42:50
hostname1
SNMP System Uptime
Uptime
Up
55 d 
01/03/2018 16:42:50
hostname1
SNMP System Uptime
Uptime
Warning
No response (check: firewalls, routing, snmp settings of device, IPs, SNMP version, community, passwords etc) (SNMP error # -2003)

01/03/2018 16:37:36
hostname2
SNMP CPU Load
CPU Load
Up
7 %
01/03/2018 16:37:36
hostname2
SNMP CPU Load
CPU Load
Warning
No response (check: firewalls, routing, snmp settings of device, IPs, SNMP version, community, passwords etc) (SNMP error # -2003)

As you can see here there is a Warning event for a non responsive snmp check, but inmediately after and with the same time signature there is a record with the snmp response.

This is just an example, I'm having hundreds of those a day.

I've increased the probe's host memory and cpu to discard a performance bottleneck. Any suggestions on were could be the problem or what can I check?.

Thanks,

Nicolas.

performance prtg snmp-sensor

Created on Mar 1, 2018 7:55:37 PM

Last change on Mar 9, 2018 3:34:57 PM by Luciano Lingnau [Paessler]



3 Replies

Votes:

0

Hi Nicolas,

Are you using SNMPv3 by any chance? Did you already try to increase the SNMP delay within the devices to see if it's a load issue?

Kind regards,
Stephan Linke, Tech Support Team

Created on Mar 2, 2018 11:28:13 AM by Stephan Linke [Paessler Support]



Votes:

0

Hello Stephan

I'm not using SNMPv3. I'll try your suggestion to increase the SNMP delay and will let you know the result. Thanks,

Nicolas.

Created on Mar 2, 2018 12:41:57 PM



Votes:

0

Hi Stephan

During this week I tried your suggestion to increase the SNMP delay but that didn't seam to resolve this problem. Now I've installed a new probe on another VM and moved most of the devices to it, as of this change the SNMP timeout error is gone. Could there be some problem hosting a probe on the same prtg server?. Thanks,

Nicolas.

Created on Mar 9, 2018 2:53:46 PM




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