IRule Creation help

Interesting, the problem is once you introduce persistence you have more of a chance of not distributing the traffic as planned..

 

 

I remember reading about a similar issue earlier in the year... Here is the post dug up.

 

 

http://devcentral.f5.com/Community/GroupDetails/tabid/1082223/asg/50/aft/1176748/showtab/groupforums/Default.aspx

 

 

Read through the post, you could try enabling a persistence profile and using "match across".. but I'm not sure that is going to work for you and your cookie persistence requirements..

 

 

Also, the post makes reference to "ratio" load balancing.. Could you possibly use one pool and use Ratio for a LB metric?

 

 

Otherwise you could probably go at it a few ways.. One idea, what if you set a unique cookie for each pool during the random logic, then before the random logic you could check if either cookie exists and send it to the appropriate pool..If no cookie, then you start the random logic. Problem is now we would need to figure out how to take the existing persistent traffic into your % metric or you're not going to be meeting your original goals..