DSR with LTM

Do I need to configure persistance or sticky to make DSR work? In some other vendor load balancer I have seen that persisnace configuration is mandetory (based on source IP) to get DSR working which is a problem in my opinion.i think it depends on your application. if there are multiple connection per session, i think persistence is needed.

 

 

In DSR mode, can I configure Virtual IPs (VIPs) per protocol and per port at the same time? For example, if we configure VIP for DNS (port 53) it works for both TCP and UDP with no way to make it work only for UDP.i understand you can choose protocol (i.e. tcp, udp, all) under virtual server setting.

 

 

When I configure VIPs for DSR operation, I configure loopback interfaces on the real servers with the VIP IP. Is it possible to have health checks aimed to the loopback addresses of the servers instead of the addresses bound to teh ethernet interfaces? So, this way if there is no loopback (with the VIP IP) configured on the real server (may be due to config error), the VIP will fail.i understand health monitor has to be sent to server's ethernet interface address but what health monitor checks is another thing. for example, http monitor. it will mark server up if server responds expected string.