Forum Discussion

jo123's avatar
jo123
Icon for Nimbostratus rankNimbostratus
Oct 24, 2024

Unstable communication L2 and ARP

Hi, I have a very wired problem with one of our F5. This is a single armed partition, so the LB VS and pool members and everything is all on the same L2 network segment.   The thing is, the pool me...
arp
L2
LTM
ping
timeout
  • jo123's avatar
    jo123
    Oct 29, 2024

    Found the issue, someone configured a duplicate non floating IP on both units in the device group, therefore, icmp monitor was failing randomly, rendering the nodes down.

    Thanks for the answers. 

boneyard's avatar
boneyard
Icon for MVP rankMVP
Oct 27, 2024

Some more info on the network around the F5 will be useful. Specially between the F5 and the servers.

 

Also can be useful to look from the server side. If you ping from the F5 when they don't respond, do they see the ping or not. What do they see when the arp happens?