iRule to Force Source IP to Specific Backend Node

Thanks, everyone on you suggestions. It was solved by irule on each VIPs

Jison111 You can definitely force traffic to a specific node or pool member in a pool based on source IP but when you do that it tends to cause some persistence issues. What I would recommend is configuring a pool for each pool member and then one pool with all three pool members in it. Use the pool with all three members as the default pool to balance traffic to and then if a specific source IP comes in then you balance traffic to the respective pool with the pool member you would like to use which will reduce the chance of persistence issues that have been encountered before when forcing traffic to a specific node or pool member inside a pool with multiple members. So the logic should be as follows.

client request -> VS -> pool with all pool members in it
client request with specific source IP -> VS -> pool with single pool member for that source IP

You would use an iRule or Traffic Policy, I prefer iRules when I can use them.

instead of irules, you can use gui based local traffic policy.

put node1 to pool1 and node2 to pool2
create lt policy and rules such as below
then attach the lt policy to the vserver