F5 LTM and simple centos voice server

Common Sip LB problem, remember to setup a SIP session Persistance.

Here is how: https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-concepts-11-2-1/ltm_persist_profiles.html1192268

Regards!!

Sure, i created a pool named voice-pool with port 5060 and added 2 pool members with ip 192.168.1.58 192.168.1.59 with 5060 port , and health monitor is sip as i remember , i also tried icmp and udp later

the default health monitor for the nodes was icmp

created a virtual server named voice-vserver with ip 192.168.1.140 , selected udp profile for the client and server , applied SNAT automap (also tried snat pool) , didnt add persistence profile in this setup , but tried it later

when configured the phone to register to 192.168.1.140 the phone did register to the first server with no problem , and it showed int he statistics ob F5 LTM

but when i shut down the first server , the phone doesnt register to the vserver ip (192.168.1.140) but could register to the ip of the 2nd server (192.168.1.59)

Did you try reselect in action on service down pool configuration

Would you mind sharing your setup. When a pool member goes down, the traffic will be load balanced to the available member.