Hello, if you want to use kamailio as a load balancer with failure re-routing, then see dispatcher module -- it has a sample config that does re-routing: - http://kamailio.org/docs/modules/stable/modules/dispatcher.html#dispatcher.… If you want to install kamailio load balancer as active-passive system based on shared IP, then check the web on tutorials about using heartbeat, ucarp, vrrp, corosync... It should be same procedure as for any other application -- perhaps you can easily find tutorials with heartbeat/ucarp/... about apache (or other web server), mysql, mail servers, etc. I use ucarp -- there are plenty of tutorials online about high availability of servers with ucarp. Cheers, Daniel On 30/10/14 08:10, Nandini madhu wrote: -- Daniel-Constantin Mierla http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda