I don't know exactly what you want but I set these types of scenarios all the time. I generally run two different private networks off of the E0 and E1 interfaces respectfully. At that point it's trivial to set up routing between the two networks.
I would setup two default routes on the 2621: one that goes out the T1 interface and a second failover that points to the cable modem. If your T1 goes down, then your traffic goes out the cable modem. Of course this only helps with your NAT-ted traffic and won't help with your hosted services (though you could easily setup a secondary Mail address that comes in via the cable modem). I know some folks that actually bridge on these Cisco's and I've seen some interesting setups for that - though in most cases routing should work just fine. good Luck - Jon Carnes (BTW, OpenBSD would bridge these networks just fine... :-) On Thu, 2005-06-30 at 16:32, Steve Hoffman wrote: > I'm sorry to stray off topic here, but this could end up being on > topic in the end. I've got a cisco 2621 router with a t1 card and two > ethernet ports running on a t1; additionally I have Time Warner > business class cable modem service. > > We like to have at least two networks for redundancy (just in case) > but rather then one sitting idle all the time I'd like to create a > development network and a rest of the company network but bridge the > two so that requests for machines on one network or the other don't go > out to Atlanta and back when they could just as easily stay inside the > network. > > I thought our cisco router would be able to do that just fine..but > apparently it can't route packets between interfaces...or I don't know > how to do it. > > > Here's how I envisioned it: > > > T1 Cable Modem > | z.z.z.z/28 | > | x.x.x.x/29 | > | y.y.y.y/29 | > -------------------- | > | cisco 2621 | | > --------------------- | > e0| e1 |_________________| > | > | > | > ---------------------- > | switches | > ---------------------- > > > the cable modem is locked down to the point that I can't add routes to > it...if I could I wouldn't be here right now... > > Is there a device to bridge the networks since apparently the 2621 > can't do it...or can the 2621 do it and I'm simply retarded. Can I > put a linux box in there somewhere and use it to route between the two > networks? I have no experience with xBSD so suggesting that won't go > far but if it's the only answer I'll put it on my list of stuff to > learn. > > Any help or suggestions would be greatly appreciated. > > Steve -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
