Hash Load Balancing

Here is a piece of logic that may help.

192.168.1.x represents all the pool members in your test_pool.

 
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 . 
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 set active_members { } 
 set pool_list { 192.168.1.10 192.168.1.12 192.168.1.13 192.168.1.14 ... etc.  } 
     foreach node_address $pool_list { 
         if {LB:status pool test_pool member $node_address eq "up" } { 
            lappend active_members $N 
        } 
     }  
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 . 
 . 
 

Least to say I don't like embedding IP addresses into iRule, but I thought it might get you in the right direction and hopefully the iRule pro's in this forum would jump in enhance it or simply figure out a better way. I would also investigate using classes to replace the IP address simply because it's cleaner.

I hope this helps,

CB