[SOLVED] Need help with routing

[amlife]

Hello everyone


I have 2 application servers and they are directly connected to a SAN without a switch.

The SAN server has dual network card

                      APP1                              APP2
                     172.16.16.10                   172.16.16.20
                          |                                |
                          |                                |
                   172.16.16.1 --[ SAN DUAL NIC ] -- 172.16.16.2

APP1 is able to ping SAN on 172.16.16.1, however I'm not able to reach SAN from APP2.


I'm not really sure why its not working, but if I change the subnet to be as the following

                      APP1                              APP2
                     172.16.16.10                   192.168.1.20
                          |                                |
                          |                                |
                   172.16.16.1 --[ SAN DUAL NIC ] -- 192.168.1.2

Both servers are able to talk to SAN box.

My question will be how can I enable route between APP1 APP2? right now they work, but they can't talk to each other since they are on different subnet.

Your help is highly appreciated.

Thank you

[Kloschüssel]

You probably want to:

* let APP1 be in the subnet1 172.16.16.0/24
* let APP2 be in the subnet2 172.16.17.0/24
* route packets from subnet1 into subnet2 and vice-versa; normally this is done with the route command, i.e. something like:
~@ route add -net 172.16.16.0 netmask 255.255.255.0 dev nic1
~@ route add -net 172.16.17.0 netmask 255.255.255.0 dev nic2

Cheers

[amlife]

I found the solution

Configuring Multiple Default Routes in Linux « Darien Kindlund's Blog