[CentOS] Redundant LAN routing possible?

[Rajagopal Swaminathan]

Greetings,

On 7/11/10, Emmanuel Noobadmin <centos.admin at gmail.com> wrote:
> I've been reading that it's possible to set up a system with multiple
> NIC to provide redundant internet connectivity such that it will
> switch to a secondary connection if the primary ISP fails.
>
> Is it possible in a similar way to setup redundant LAN routing? I read
> that it is possible to aggregate/bond multiple NIC to stackable
> switches that support link aggregation and redundancy. But if only
> simple switches are available, is something like this possible?
>
> e.g.
> System A
> eth0 -> lan switch/router 1
> eth1 -> lan switch/router 2
>
> System B
> eth0 -> lan switch 1
> eth1 -> lan switch 2
>
> Then somehow specify that, if lan switch 1 fails, the two systems will
> switch to using switch 2 so that in case of a switch failure, the
> network continues to remain operational.


hmm.. lartc.org comes to mind to begin with...

duh.. that was too primitive. pfSense perhaps...

But then there is untangle if you want to pay them..

etc. etc.

Regards,

Rajagopal