Re: routing and multiple NICs

From: Bill Grant (not.available_at_online)
Date: 07/03/04 

Date: Sun, 4 Jul 2004 09:57:34 +1000

    A Windows machine will only use one interface as a default gateway,
which means that only one default route will be active. If you configure two
with the same metric, the machine will use one of them, and only switch to
the other if that one fails.

    I will now ask you a question. Why do you want two interfaces pingable
from the Internet? Seems pretty silly to me.

"Piotr" <ksswd@poczta.fm> wrote in message
news:eE6T9nOYEHA.2408@tk2msftngp13.phx.gbl...
> Hi,
>
> I have a Win 2000 Server with 3 NICs. Two of them are connected to
internet
> by two different connections. Each of them has its own gateway configured.
> This gives two routes for address 0.0.0.0, one for each interface. The
> result is you can ping (and connect to) both interfaces at the same time
> from outside (which is the point for this configuration).
> First problem : from time to time one of interfaces becomes suddenly
> unavailable for some time (30 seconds or more) causing all connections to
> be broken. Apparently packets coming through first interface are forwarded
> to the second interface (you can see it on Network Monitort) instead of
> going back the same interface they came in.
> Second problem: this configuration stops working completely after enabling
> RRAS. Only one interface (public IP) can be seen (ping or whatever) from
> outside. Seems like there can be only one route for address 0.0.0.0 when
> RRAS is configured.
> Can anybody have the idea what's causing and how to solve those problems?
> It's very irritating considering this configuration works perfectly on
linux
> systems .
>
> Andrzej.
>
>
>
>

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