LTM logging of persistence and load-balancing algorithm results

Hi there,

this is my first post to DevCentral, so I hope it's not a stupid question!

I have an HTTPS virtual server

• default persistence is cookie insert
• fallback persistence is source IP

Although I can verify the presence of the LTM-created cookie, in the response to the client browser, I am concerned that there are still source IP persistence records being created in the LTM.

Now, I can change the fallback persistence to None, and then no source IP persistence records appear.

But I would really like concrete answers as to why these persistence records get created in the first place.

My browser

• is accepting the cookies
• can be stuck to another server, by maniulating the cookie content

This proves to me that the cookie-insert persistence is obeyed.

Is/are there (a) logfile(s) that record why the LTM took the action it did.

For example:

• received request from client with IP A for virtual server with IP W and port X
• no persistence cookie found in request
• no source IP persistence record found where source IP = A
• virtual server W:X uses least-connection(member) load-balance algorithm to pool Y
• pool Y member connection counts:
• pool member D: 100
• pool member E: 106
• pool member F: 96
• client balanced to pool member F with least connections

Cheers,

Tom.