We have been having a heck of a time troubleshooting packet loss on a MLPPP link that terminates on a 7206VXR and a 2801. There are several other Multilinks on the same 7206 that are not experiencing any problems. We have tried:
Adding the tx-ring-limit 4 on the ATM pvcs on the ISP side.
Modifying shaping on both the ATM side and the frame side routers.
Rebuilding the entire Frame and ATM pvcs in the FR/ATM switch
Replaced the 2801
Added ther ppp multilink interleave, ppp multilink fragment delay 10 commands to the VT on both routers.
Tested all three T1 circuits(all are clean)
I have attached router configs, show commands, and ASCI diagram. I would appreciate any advice anyone may be able to offer.