Would like to use priority group activation in a dual primary/backup situation

Let's look at the following approach based on the information you provided:

let's call Network A "PoolA" and Network B "PoolB"

Server1 and Server2 in PoolA

Server 2 and Server 3 in PoolB

Pool A (Minimum active members is 1)
    Server 1: Priority 100 Ratio 1<== ACTIVE
    Server 2: Priority 50  Ratio 1<== INACTIVE and active ONLY when Server 1 is down
Pool B (Minimum active members is 1)
   Server 2: Priority 100 Ratio 1 <== ACTIVE
   Server 3: Priority 50 Ratio 1 <== INACTIVE and active ONLY when Server 2 is down

Not sure that is what I am looking for. Looks like there are 2 pools with 2 servers in each pool with this configuration. I am wanting all 4 servers in the same pool but specifically have server 2 backup server 1 and server 4 backup server 3.

I'm not sure there is a way to do that. Is there anything unique about the requests that you could split requests up between two pools? An iRule could split traffic between the two pools based on something and then this would work.

The idea of 2 seperate pools gave us an idea that is similiar to something we are already doing. We have an F5 on the front end and an F5 on the backend where the actual servers reside. We are going to try and setup a vip on the front end F5 and configure the pool to be 2 vips on the backend F5 and one vip will load balance to pool A the the other one will load balance to pool B, using persistence we should be able to stay on the same pool if one server fails.

 

 

Thanks for comments.

If you want specific servers an irule can give you that granulity

 

 

Take a look at the following article

 

http://devcentral.f5.com/Default.aspx?tabid=63&articleType=ArticleView&articleId=130

 

 

Thanks,

 

CB

 

it s very simple alteon load balancer,

 

 

group (member a b c d)

 

 

node a (backup b)

 

node c (backup d)

 

 

zafer