Re: Network Probs (was Re: Firewall issues)

From: "Trey Gruel" <[email protected]>

> > Okay, this helps. I'm assuming here that the connection requires an
> > authentication scheme before transferring data. Your ISP kills the
> > connection after a certain amount of time being down, and redhat happily
> > redials, but doesn't do the auth process. You can set up ssh or an
expect
> > script to refresh the authentication scheme if it goes down.
>
> There's no dialing going on.  This is a static ip connection over a T1
> that is shared by other systems.  When eth0 (outside network) stops
> responding, the traffic going out eth1 (lan) gets forwarded over the
> same T1 via another box.  All other outgoing traffic works.
>
> I was thinking about trying to use eth2 instead of eth0 in case it was a
> problem with the card, but according to 'ip link show', eth1 and eth2
> have the same mac address.  I'm not sure what is going on with that or
> how it wold affect any network traffic.

Two cards with the same MAC address is deadly. How many other such
situations exist on the network? This condition will lead to misdirected
and lost packets. So if there is a way to change the MAC address of
those cards do so.
{^_^}