If you're running a dynamic routing protocol (i.e. RIP, IGRP, EIGRP, or OSPF), they should see the two T1s as equal cost paths and automatically do per-destination load balancing (if you're running CEF, then that can be per-packet, at least with EIGRP, but I would suspect the same no matter now the route was learned). But you need to disable fast-switching because that will only switch out of a single interface and not load balance. If you don't want per-destination load balancing or can't run CEF to allow per-packet, you can run Multilink PPP and bundle the two T1's into a single channel. Either way, if one of the T1s, goes down, the other will still carry the traffic (at the single T1 bandwidth) and it's automatic. MultilinkPPP, however, is more processor intensive than letting the routing protocl handle it (although if you have to disable fast-switching and don't have CEF (i.e. enable process switching)) then that'll be pretty CPU intensive anyway)
Here's an article about letting the router load balancing automatically: http://www.cisco.com/warp/public/105/46.html Here's an page about Multilink PPP: (watch for URL wrap) http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/dial ts_c/dtsprt4/dcdppp.htm I'd like to see the page on Cisco's site that says this process is complex, because the first method I spoke of it automatic and the Multilink PPP method is a piece of cake, even if you've never done it before. HTH, Mike W. "Doug Korell" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I have two point to point T1's that I'm thinking about combining (known as > NxT1). Both connections are going through the same routers at each end (4700 > and 2600). I found some information on Cisco's website but they mention that > it can be complex and talk about alternatives. > > Is anyone else doing this and if so, it is worth it? If you have any Cisco > links that describe the setup process, I would appreciate posting them. I > was also wondering if one of the T1's goes down, will it bring the whole > pipe down or will your bandwith just decrease? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=46952&t=46942 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
