Remove active connections from backup system after return to normal

Hello Aaron,

 

 

I have a similar query and will the grateful if you could answer.

 

 

I am trying to Load Balance Microsoft Exchange 2010 servers at one of my clients.

 

 

The Setup is as follows:

 

 

1 Primary Site - Having 2x CAS Servers

 

1 DR Site - Having 1x CAS Servers

 

 

The Pool in the LTM consists of all the 3 CAS servers and has Priority Group Activation = Less than1

 

The 2 CAS Servers have a priority of 4 whereas the CAS at the DR has a priority of 3. So in case both of the CAS servers at the Main site go offline, the users are shifted to the DR Site CAS servers.

 

 

THE PROBLEM

 

 

The problem is that when the CAS Servers are brought back online the users (both new and existing) still keep connected to the CAS at the DR.

 

 

A colleague has given me a suggestion to use iRules, but the thing is that I am not proficient with iRules.

 

 

Would appreciate if you can help me devise an iRule which checks to see that is the Servers with Higher priority are online the users should get connected to them rather than the lower priority servers.