Vip failover to other VIp having multiple pools

HI ,

 

 

I have requirement where my VIP has 4 pools each with context based and one default .

 

DC -A

 

pool 1 - when /sit matches choose pool 1 i.e (www.xyz.com/sit)

 

pool2 - /dev

 

pool3 -/uat

 

pool4 - default

 

 

 

when /sit is down it has to choose pools in DCB with have same set up has DC-A

 

when /dev is down in DC-a choose DC_B

 

when more than 2 pools are down say / uat and /dev are down then failover to all to DC- B.

 

If i have only one pool down then only that particular pool form DC- a has to failover to DC-b but not all . when 2 or more are down then failover the VIP to DC- B .

 

 

 

IS this possible with irules on LTM . even i have GTM as an option to use but not usre how GTM helps with the failover request basing on the context based pool .

 

 

 

 

 

Please advise any help appreciated .

 

 

 

Thanks

 

Ranjan