Irule for port 22

Hi, in my opinion may this option not a good idea.

You should have two distinct virtual servers (same ip address/ distinct port number) and so each one would have their own profiles and behaviors.

I can't see advantage doing one virtual server to both services to balance in L4/L7.

Anyway, if it really matter this approach, you could do a virtual server that will listen to all ports (any) and then you will direct the traffic to the correct pools (at this point, if the pool members have different ports than source port, do not forget to enable port translation on the virtual server). Remember that the virtual server should't have L7 profiles attached.

when CLIENT_ACCEPTED {
    if { [TCP::local_port] eq 22 } {
        pool ssh_pool
    } elseif { [TCP::local_port] eq 80 } {
        pool http_pool
    } else {
        TCP::close
    }
}

Respectfully,