Forum Discussion

Patrick_Brown_7's avatar
Patrick_Brown_7
Icon for Nimbostratus rankNimbostratus
Jul 01, 2013

SNMP polling of nodes behind BIGIP

I'm trying to query hosts on my internal VLAN from an SNMP poller on my external VLAN. I've been searching for solutions but so far I'm only finding topics relating to monitoring the BIGIPs themselves.

 

I have done a tcpdump to watch traffic on the inside and outside interfaces. Any polling from the outside vlan (int 1.1) get's blocked. Polling from the inside vlan to hosts on the outside vlan work fine. I have a forwarding VIP defined and can ping all the servers in question.

 

 

Thanks,

 

Patrick

 

management
monitoring

2 Replies

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 06, 2013
    Any polling from the outside vlan (int 1.1) get's blocked.have you seen snmp polling packet from bigip to host in internal vlan in tcpdump file?
  • Patrick_Brown_7's avatar
    Patrick_Brown_7
    Icon for Nimbostratus rankNimbostratus
    Aug 05, 2013

    I was able to get this working. Turns out it had nothing to do with F5. The hosts had been configured to allow traffic only from the NMS server. The traffic was actually proxied from the inside of the F5 box. Removing that restriction resolved the issue.

     

     

    --Patrick