Least Sessions balancing and Server restart

Hi,

 

I am running F5 BigIp with 11.2.00 HF2.

 

I am playing with the Diameter iApp and Least Sessions balancing policy. I have 3 servers in my setup and the following scenario:

 

1. 3 servers running and traffic balancer among these servers

 

2. 1 of the servers goes down and the new traffic is re-balanced to other servers (universal persistence in place)

 

3. After a while the server comes back, and Diameter monitor sets it up as the 'Available" one.

 

What I am expecting in this situation is, that new sessions will be routed to this new server, which was restored, but this is not a case. I check the Round Robin and it in general, it was quite fine.

 

I saw some time ago the information, that actually due to different bugs, for Diameter only teh Round Robin policy is really working. Is this still a case? Did you have similar experiences with F5 and Diameter traffic balancing?

 

Rgds,

 

DeeN