How LTM attaches information about node to JSessionsID ?

Hello,

I am not sure how you have persistence configured on the F5 but it sounds like the session persistence table needs to be investigated. Use something similar to the following command to check.

tmsh show /ltm persistence persist-records all-properties 

If your server is generating cookies then then above command can help you to understand which cookie is being persisted to each server.

What is the lifetime of your cookies that the server generates?

Christian