SNMPv3 communication stopped working with our APC PDU's. SNMPv1 still works.

Wondering if anyone has run into this issue or something similar before.

We are in the process of adding our APC PDU's into NPM. I added approximately 90 or so PDU's into Solarwinds and built some UNDP's for them. PDU's were talking to Solarwinds via SNMPv3. Everything was going great. However, the friday before last, suddenly solarwinds stopped polling on 80 of the 87 devices. Devices show up and pingable, but no data is being polled. The other 7 devices are working just fine though I tried to re-add a couple of the PDU's and they are now unable to connect via SNMPv3 - test fails constantly when trying to add them. Funny thing is, SNMPv1 works just fine if I configure the PDU with that.

I'm hoping someone else has had a similar issue at some point

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FormerMember

So after more investigation - If I configure one of the non-working devices as SNMPv3 noAuth noPriv Solarwinds picks it up just fine - As soon as I do Auth noPriv or AuthPriv SNMP fails. The crazy thing is that the devices that never stopped polling are set to AuthPriv and are working just fine. Maybe that will give somebody else a clue.

gdeemer86

We are having the same problem on a few of our Cisco Routers/switches. When we issue the 'debug snmp headers' command the header (sent by the Solarwinds app server) is noauth EVEN when we select AuthPriv on the node details section of the web GUI. This would explain why it is successful with v1 and noAuth. We are using version 11.5.2. Was a solution ever discovered for this? The ones that are working send 2 SNMPv3 packets. One is noAuth the other is Priv. (not sure if that part matters but it was still observed)