SNMP Probe timed out, target is either unreachable or there are no valid credentials for it

[Hanumant Madan1]

Hi All,

We are discovering some SNMP devices and observed that out of 5 devices 4 are getting discovered finely but the 5th devices throws an error. : SNMP Probe timed out, target is either unreachable or there are no valid credentials for it.

I have observed that for those 4 devices which got discovered:  response was received in around 20000 ms but the device which throwing an error says 

I got this link below which talks about solution.: 

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0859825

I currently see no values are set under SNMP - Classify  Under Discovery Definition--> probes

Any advise on what value we should be setting up in this fields, as in our case time taken is huge, and also unsure of what value to set, because I can't see the default values in those fields.

Any help will be appreciated.

Regards,

HM

[VivekSattanatha]

Hi Hanumant Madane,

What happens if you do a quick discovery of that device? Is it still getting failed?

If it still fails then try to do the SNMP walk from MID Server and see whether you are able to reach the target. You can show the SNMP walk results to your network team, they can analyze if the UDP packets are getting loss or any device-specific access control is in place on the target device.

Regards,

Vivek

[Divya G_]

What is SNMP walk from MIDserver i am new to discovery.

[mochan_s]

For IDRAC Out of Band Devices.
Similar Issue facing When the discovery is running through schedule it is giving error and not discovered.
SNMP probe timed out. Target is either unreachable or there are no valid credentials for it.
And there are few IPs in the same subnet which are getting discovered and updated through the schedule.
However running fine when doing quick discovery.

[Skinner · Accepted solution]

I believe the defaults you are looking for are in this document.

https://docs.servicenow.com/bundle/paris-it-operations-management/page/product/discovery/reference/r_SNMPProbeParameters.html

Thanks,

Dudley