Hi Ganesh,

Here is some rules I know, it might not cover all, I think Dr.Chow may
have some more ideas about it.

if (url="*gif") then routeServer1
else routeServer2

if (url!=**) then routeServer1

if (http.mime="video") routeServer3

if (cookie="string") routeServer4

if (saddr=128.198.192.194) routeServer2

if (dport=80) routeServer4

if (xml.customID="####") routeserver1

And the combineation of thses rules. Let me know if you have any
questions.

Weihong