Capture AD Attribute redirect to a pool

Hello!

 

I have a VIP with its pool members working perfectly. I do have a spare pool in case of failure.

 

Now, I am looking for a way to "detect" an AD attribute so I can redirect them (depending on the value) to the spare pool.... like upper management users/admins. This way they will have a better experience than the regular population.

 

I was looking using an Application Policy but I don't know how to "Capture" the AD Attribute without authentication. All PC are authenticated in the Domain.

 

Please advice

 

Thank you

 

J