Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

sonu_kumar4's avatar
sonu_kumar4
Icon for Altostratus rankAltostratus
Jan 10, 2019

i-Rule redirect/load-balance request based upon source subnets.

Hello Guys,   I am looking for I-rule which could load-balance the requests to different-2 pools based upon the different-2 source subnets.   let's say I have three pool:-   Pool-A 10.10.10....
big-ip
irules
security
Rico's avatar
Rico
Icon for Cirrus rankCirrus
Jan 10, 2019

Try this:

when HTTP_REQUEST
{
    switch [IP::addr [IP::remote_addr]]
    {
        case "172.16.10.0/24" -
        case "172.16.20.0/24" {
            pool Pool-A
        }
        case "172.16.30.0/24" -
        case "172.16.40.0/24" {
            pool Pool-B        
        }
        case "172.16.50.0/24" -
        case "172.16.60.0/24" {
            pool Pool-C
        }
        default {
            pool Pool-A
        }
    }
}

If you have any more questions, I am sure I can help.