Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Dan_Pacheco's avatar
Dan_Pacheco
Icon for Cirrus rankCirrus
Nov 17, 2017

In an HA pair, which device sends monitor traffic?

HA pair setup with fast failover, aka ha-group running v12.1.2 hf1. Single traffic group.   I expected both the active and standby LTM devices to send monitor traffic to nodes but when I tcpdump o...
application delivery
LTM
Lee_Sutcliffe's avatar
Lee_Sutcliffe
Icon for Nacreous rankNacreous
Nov 17, 2017

Both devices should be sending monitors, this is required so that the standby device can go active and start serving traffic.

 

Is your configuration synchronised and can you ping/curl the pool members from each device out of the equivalent network?