traffic load balanced to CAS server very unevenly

Hi Daniel, for which Exchange service are you seeing uneven persistence? I would expect OWA to work fine, but Outlook Anywhere/ActiveSync/Autodiscover connections don't use cookies, so they would fall back to source IP address. If the TMG is translating the source IP of the client connections to it's own IP, LTM would only see one source address for all connections and you would have clumped connections. You can run this command on the LTM to see the source IP persistence records:

 

 

(tmos): show ltm persistence persistence-records

 

 

This command will not show you cookie persistence records.

 

thanks

 

Mike