[c-nsp] Help with multilink ppp, routing not working correctly..

Seth Mattinen sethm at rollernet.us
Sat Jul 19 22:21:35 EDT 2008


Howard Leadmon wrote:
>    Hello Diogo,
> 
>  Thanks for the reply.. Actually I had a dynamic routing protocol running on
> the routers, and even pulled that and tried using static routes.   Actually
> as I was just trying to ping interface to interface, no routing at all
> should have been needed, as Router-B would have seen both of the /30's as a
> connected path.
> 
>  Not sure if you saw my earlier response to Gert, but I did afterwards take
> and tear down the MLPPP bundle, and then just put the /30 from the bundle on
> a single T1 interface.  When I did that, everything worked, traffic moved
> perfectly.  So it's without a doubt something very specific to having the
> Multilink interface up, as only then does the pathway fail.  The only thing
> I can see different when I put it over multilink is that I see a /30 and a
> /32 in the routing table from it.  So if I am on router B and do a show ip
> route, I see 192.168.98.28/30 and also a 192.168.98.30/32 both pointing to
> the Multilink1 interface.   Not quite sure why I get that /32 in the table,
> but guessing it's just a quirk of how the MLPPP connection establishes.
> 

Try adding 'no peer neighbor-route' to the multilink config?

~Seth


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