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Paulius's avatar
Paulius
Icon for MVP rankMVP
Dec 05, 2022

No Response to SNMP GetRequest

I am currently troubleshooting an issue from SolarWinds to all my F5 devices. I receive the GetRequests but no response ever comes back. I see the following in my tcpdump but I have redacted a lot be...
security
mihaic's avatar
mihaic
Icon for MVP rankMVP
Dec 06, 2022

Here is a guide how to configure SNMP on F5:

https://support.f5.com/csp/article/K52219241

make sure you read it first.

So a snmpwalk from you source Solarwinds server does not work?

when you say "Now if I go to any of my F5 devices and perform the same snmpwalk" you sis a snmpwalk from the F5? or from Solarwinds server? Try a snmpwalk from a Solrwinds server. There is an exe file that can do that.

Note: By default, SNMP is enabled only for the BIG-IP system loopback interface (127.0.0.1).

Make sure you have this:

"

  1. On the Main tab, click System > SNMP > Agent > Configuration .
  2. In the Client Allow List area, for the Type setting, select either Host or Network, depending on whether the IP address you specify is a host system or a subnet.

"

 

  • Paulius's avatar
    Paulius
    Icon for MVP rankMVP
    Dec 06, 2022

    mihaic 

    Q: So a snmpwalk from you source Solarwinds server does not work?
    A: Correct, no SNMP request from the Solarwinds server works when attempting to connect to any of my F5 devices but keeping it simple and just mentioning the one F5 device.

    Q: When you say "Now if I go to any of my F5 devices and perform the same snmpwalk" you sis a snmpwalk from the F5? or from Solarwinds server?
    A: I performed an snmpwalk and an snmpget from both Solarwinds and another of my F5 devices.

    In regards to the SNMP agent configuration, I do have the appropriate allowed list and even went as far as allowing all IPs to reach the F5 in question with the same result. I see the GetRequest arrive from the Solarwinds server but a GetResponse never goes back.