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ME3600 bpdu relay

Hello,

Does anybody know how to configure properly  "bpdu relay" feature between two ME3600 as MPLS PE routers? 

Problem is: Both should be configured with  MST and "l2protocol peer stp"  for untagged frames on EFP toward access switches and additionaly thay need xconnect between them (special PW between PE for untagged frames). But problem is they don't see each other this way.Consequence is that access switches doesn't stp block any link toward PEs. 

I know I can use "l2protocol forward stp" instead of peer but then PE doesn't consume BPDUs and hence there is no "mac address withdrawal" in case TCN  comes from access network to PE. 

Please help,

A.

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