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Multi-Link PPP on 2650XM

We added a 2nd point-to-point T1 connection to our 2650XM router that goes to a Nortel BLN (Backbone Link Node) Router. The problem we have is that once we add the second T1 to the multi-link PPP group, all traffic stops routing.

Has anyone seen anything like this before? What about some good debugs to troubleshoot this? I'm thinking multi-link ppp incompatibilities/configuration options between the Cisco and the Nortel MLPPP implementation, but need some ideas on how I can prove it is one side or the other.

Any thoughts would be appreciated-

Ryan

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Re: Multi-Link PPP on 2650XM

Try unconfiguring the MLPPP bundle on both the routers one by one and then configure it again. Also here os the link to troubleshooting documents on PPP.

http://www.cisco.com/pcgi-bin/Support/browse/psp_view.pl?p=Technologies:PPP&s=Verification_and_Troubleshooting#Troubleshooting_Steps

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