Two default gateway's

Depends on the context.

Two Nics, each in a subnet, default gateway on each,...no,..you don't do
that.

One Nic, in one subnet (not a multi-netted nic), multiple Default Gateways
(all located on the same subnet),...yes,..it is called Dead Gateway
Detection. It is "clunky", undependable, and probably won't behave as you
expect,...but in *theory* it is a valid configuration.

The best way, in my opinion:

With an Internet connection scenario, the best way it to run all the
Internet links into the same router and let the same router handle all of
them. The links should all come from and be controlled by the same ISP. The
ISP will configure the routers (on both ends), using the Routing Protocols
to work together to handle the multiple lines. We use a pair of T1s here
for example.

Broadband connection are a little different. You have to buy a broadband
device that has two WAN ports and run both links into the same broadband
device. I have never seen any of these with more than 2 WAN ports, so you
would be limited to two links.

In an internal LAN scenario you use multiple routers with multiple paths to
the same destination. The routers are all configured with Routing Protocols
and will communicate with each other to maintain the paths. All the work is
done by the Routing Protocols.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com




"Chad Guiney" wrote in message

> Is it possible for me to add two default gateway addresses (Router option
in
> the DHCP scope) from the same network to allow for failover so if one of
the
> gateways goes down the clients will attempt to send traffic to the other?
> Thanks in advance for any help
>
> Chad