Question related to persistence

Let me just explain how it works :

• First request: When a client make a request for the first time to the VS, the BIG IP system forward the to the selected pool member based on the LB method used.

When you have both cookie and source-addr configured the system will make both:

a) insert the cookie into the http response of the server

b) update its peristence table with the information (example sourceIP-A node-1)

• Second request:

A) When a client make this request it will send the cookie within the HTTP header... the BIG IP receives it and can read it to know to which pool member it must send the traffic

B) If for some reason (client does not support cookie or cache was purged) the client sends the request without the cookie, the BIG IP uses the fallback method and read the persistance table to find that "sourceA must go to node1"

Hope it helps

Regards