setting COOKIE_INSERT_EXPIRATION_DATE to null makes "inserted cookie" session based cookie.
You just need to
1. Define a sticky group with insert cookie
sticky 19 cookie APP1-cookie insert timeout 30
(timeout defined here has no significance, CSM will insert cookie "APP1-cookie" in the server responses.Cookie values will be different for all the reals)
2. And Assign it to a VServer/ policy
vserver APP1-VS
virtual 10.10.10.12 tcp www
serverfarm APP1-SF
sticky 30 group 19
replicate csrp sticky
replicate csrp connection
persistent rebalance
inservice
Syed Iftekhar Ahmed