eathernet bridging???

brianmay27 · 05-16-2006, 11:07 PM

I dont know if this falls under bridging i am still trying to get what a bridge is but i beleave this is correct. I have 3 eth connections lets say eth0 eth1 and eth2. I am trying to make a t1 failover (i have the fail over part but not the forword part) so i have it ping something every sec and if it is not there it swiches over. so my config looks like this.

Code:

                         |---------|
                         |         |
internet (T1)(eth0)------|computer |------ internet (dsl) (eth1)
                         |         |
                         |---------|
                              |
                              |
                              |
                              |
              to router (eth2) (to my buisness network)

I am now just trying it in my home network with a router and then a switch near the computer. So right now it is like.

Code:

                         |---------|
                         |         |
internet (dsl)(eth0)-----|computer |------ internet (dsl) (eth1)
      (129.168.0.*)      |         |           (192.168.0.*)
                         |---------|
                              |
                              |
                              |
                              |
             to router (eth2)(to my buisness network)
                (anything i have not picked anything)

I tryed to get the eth0 or eth1 to send all the packets to eth2 but i faled. (off topic just rembered the 192.168.0.* the star is one of thoues that can be anything i dont know if i need to have it pre set or what). so if some one could help me get it to work or how i bridge? i need this asap if it is possable.

mchitrakar · 05-18-2006, 12:09 PM

i guess you are trying to configure your linux(?) box as a "router". you can do it in two ways like: using kernel ip_forwarding capability or you can use firewall (may be iptables or even older ipchains )....all this depends upon your need. and i could not grasp the full need from your description. like you are mentioning internet but you are using private IP range "192.168.0.*" on your eth1