Your script could have the backup router take on the IP Address of the primary after it loses its heartbeat. You'll run into a problem with ARP caches. I saw some code floating around earlier that allowed one box to listen to the MAC address of another and respond to its ARP requests. You would need to incorporate something like this in any solution. And this all assumes routers A and B are in parallel; all clients and both routers are on the same LAN. So you have a separate NIC between routers A and B for heartbeat. Each router has a NIC on the LAN side, and each has a NIC connecting to the Internet. - Greg Scott -----Original Message----- From: lartc-bounces@xxxxxxxxxxxxxxx [mailto:lartc-bounces@xxxxxxxxxxxxxxx] On Behalf Of Jandre Olivier Sent: Wednesday, February 01, 2006 5:52 AM To: lartc@xxxxxxxxxxxxxxx Subject: failover routing Hi Guys, I would just like to have advice and pointers of the best way would be, Someting like BGP or OSPF? I have 2 internet connections at diffrent locations. let say connection A and B 1.) router A has a fast internet connection and a seperate interface for clients using /lan/pppoe/ipsec etc and another ethernet interface going to router B 2.) router B has similiar setup as router A and also a seperate ether interface for clients and one going to router A 3.) all clients gets masqueraded as there is limited amount of internet routable ips Now my first thought was to write some perl/bash scripts to just ping your internet gateway address of Router A and if its down, just change your default route to router B and everyone and vice versa and u can still get access. This way for me is not very clean though as Im the one writing the scripts as something like zebra might do this perfectly? just a basic idea of what my setup is. What would be my best way of doing this.? -- /*---------------------------------------------------------------------* / __ _ ---------- / / (_)__ __ ____ __ --------- ------- / /__/ / _ \/ // /\ \/ / -------- ---- /____/_/_//_/\_,_/ /_/\_\ ------ localhost@xxxxxxxxxxxxxxxxxx _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
