Multiple Cookies - Session lost

1. I have applied the iRule to encode the cookie into node ip and port to log it to var/log. I would like to know how can I save the cookie value as well in the logs. what irule are you using? i have seen some in codeshare.

 

 

e.g.

 

Persistence Cookie Logger by Deb

 

http://devcentral.f5.com/wiki/iRules.Persistence_Cookie_Logger.ashx

 

 

Cookie Persistence Logging for TMOS 10.0.0 or greater by rwilke -at- connectria.com

 

http://devcentral.f5.com/wiki/iRules.Cookie-Persistance-Logging-for-TMOS-10-0-0-or-greater.ashx

 

 

However, I also see the below cookie which I have not configured. Is this a default cookie

 

Set-Cookie: BIGipServerFP_pool=168430090.20480.0000;path=/;does the virtual server have irule which may select FP_pool?

 

 

Once the F5 sends a Set-Cookie, some http clients requests contain the cookie and some requests do not. Is this the correct behaviour.i do see client sending cookie in all requests (after receiving set-cookie).