Originally posted by: michaeldpotter

Hello,

I have an LPAR that is setup with two interfaces, en0 and en1:

en0 10.99.0.0/16

en1 10.4.0.0/16

The default gateway is currently set to 10.99.0.2. 

I am wondering if there is a way to set a second gateway that would go to 10.4.0.2, but only for traffic that is received/sent on en1. In other words, I would like to send all traffic received on en1, back out en1 to the second gateway.

Thanks!

Michael

Originally posted by: Verleihnix

Hello Michael,

the default gateway is like the highlander "There can be only one". But never the less, you can add additional gateways to the routing table.

For example: You get a package addressed to 10.4.0.10 (your en1) from e.g. 10.5.0.10. So, if you don't have a route to the network 10.5.0.0 , the outgoing traffic will use the default route. To route the outgoing traffic to en1, you have to set a route for the network 10.5.0.0

Assuming, your Gateway in the network 10.4.0.0 is 10.4.0.2 and your destination is 10.5.10 in the network 10.5.0.0 then do a

route add -net 10.5.0.0 -netmask 255.255.0.0 10.4.0.2 for a network route

or

route add -host 10.5.0.10 -netmask 255.255.0.0 10.4.0.2 for a host route

If you want to set a persistent route, use the chdev -l inet0 -a route=.... , or simply smitty mkroute

Originally posted by: michaeldpotter

Thanks for your response. It's looking like I can't do what I want to do on AIX unfortunately. :-(