Jeff Newmiller wrote:
>
> On Fri, 3 May 2002, Michael D. Schleif wrote:
>
[ snip ]
> > [3] There is no problem exchanging data with their Florida vendor while
> > the T-1 is working.
>
> ... through the T-1, so the florida network expects to route packets to
> chicago via the T-1, right?
This is only a failover scenario.
Right now, we can get to Florida either of two ways:
[a] via the T-1, or
[b] via ISDN
The ISDN setup works, if DCD is setup with it as the one and only
external interface. In other words, we have had this working _without_
the T-1 and manually configure a replacement /etc/network.conf for ISDN
to replace T-1.
We have *not* been able to get the DCD to see _both_ wan1 and eth1 as
equal external interfaces. That is what we need to do first . . .
[ snip ]
> > [8] Since this is point-to-point, firewall rules are not required; but,
> > they are highly desirable.
>
> You should decide whether you want masquerading through 192.168.14.254
> early on... you may need to hack the firewall/routing yourself either way.
> If you don't masq, the routing from the florida end may be more
> complicated. Remember that if you are not using masquerading or default
> routes, every router has to know how to route to every other router.
Yes. Actually, the ISDN router has its own NAT.
Don't forget, the ISDN is point-to-point, while the T-1 uses the
internet to get to Florida.
[ snip ]
> > [11] How can this design be implemented under these conditions?
>
> I don't know. But I strongly suspect you will have to get cooperation on
> the florida side as far as routing goes. The fact that you did not
> provide any details for that end makes me wonder if you may not be putting
> enough energy into completing the circuit from that end.
Routing is not currently an issue. As soon as even a broadcast packet
gets to the ISDN router, it immediately dials out.
The problem plaguing us right now is that we cannot see the ISDN router
from our internal network; nor, can the ISDN router see our internal
network. Yes, we can go back and forth between the DCD box and ISDN
router; but, that does little good.
Thank you, for your insights.
Any other ideas?
--
Best Regards,
mds
mds resource
888.250.3987
Dare to fix things before they break . . .
Our capacity for understanding is inversely proportional to how much we
think we know. The more I know, the more I know I don't know . . .
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