Clone, what does it do technically in an iRule?

Using a clone pool won't work if your clone destination is a standard web server. With a clone pool, LTM just translates the destination MAC address and leaves the destination IP address unmodified. So the original web server pool members and the clone pool members would both need to accept traffic destined for the same IP address. Clone pools are only useful for IPS-like devices which accept traffic destined for any IP address.

 

 

Instead of clone pools, check this iRule which uses high speed logging to duplicate HTTP requests (and ignore responses to the cloned traffic):

 

https://devcentral.f5.com/tech-tips/articles/http-request-cloning-via-irules-part-1

 

 

Aaron