Failover for specific ip pool

Hello everyone,
I want to create a fail over for only a specific IP Pool. Please guide me to the right discussion or post or documentation.

Thank you.

Hi
What meaning fail over for pooling,pls?

So this is what I want to do. I have two ISP’s providing me bandwidth. If one ISP fails I want a switch over to ISP2 for only specific IP’s.

For eg.
user 1 IP: 192.168.1.61
user 2 IP: 192.168.1.62
user 3 IP: 192.168.1.63

user 4 IP: 172.17.1.61
user 5 IP: 172.17.1.62

The above is a list of clients connected with two IP pools. All these users are connected to ISP1, if ISP1 fails I want only users 4 & 5 to switch over to ISP2.

Thank you.