[Help] How to write iRule to select default gateway based source IP address?

Hi Destiny,

Stanislas has shown you a setup based

[array]

Prequisite:

1. Establish a L2-Forwarding Virtual Server and a default route-table for your environment.
2. Figure out all the required exemption of this default route-table (sort of PBR thinkering)
3. Customize the iRule below to selectively overwrite your default routing table.

iRule:

when CLIENT_CONNECTED {
    if { ( [IP::addr [IP::local_addr] equals "10.0.0.0/8"] ) 
      or ( [IP::addr [IP::local_addr] equals "172.16.0.0/12"] )
      or ( [IP::addr [IP::local_addr] equals "192.168.0.0/16"] ) } then {
         This is the section for traffic destined to internal IPs
         The traffic is handled by the regular routing table.
    } elseif { [getfield [IP::client_addr] "%" 1] equals "192.168.10.101" } then {
         This is the section for traffic orginating from IP 192.168.10.101
         Set the SNAT IP to 178.102.1.105
        snat 178.102.1.105
         Set the next-hop to 178.102.1.104
        next-hop 178.102.1.104
    } elseif { [getfield [IP::client_addr] "%" 1] equals "192.168.10.102" } then {
         This is the section for traffic orginating from IP 192.168.10.102
         Set the SNAT IP to 178.102.1.105
        snat 178.102.1.105
         Set the next-hop to 178.102.1.104
        next-hop 178.102.1.104
    } else {
         This is the section for the remaining traffic
         Set the SNAT IP to 122.255.27.145
        snat 122.255.27.145
         Don't overwrite the next-hop to rely on the routing table
    }
}

Cheers, Kai