[alcatel-nsp] 7750SR and Juniper MX480 VPLS full mesh interopt

Phil Bedard philxor at gmail.com
Thu Oct 20 16:08:27 EDT 2011

Are there pseudowires between all of the nodes or is it in a hierarchy of
some sort?    If you do not have a full mesh you may end up blocking traffic
somewhere due to split-horizon rules.


From:  simon lee <simon_lez at yahoo.com>
Reply-To:  simon lee <simon_lez at yahoo.com>
Date:  Thu, 20 Oct 2011 10:22:42 -0700 (PDT)
To:  "alcatel-nsp at puck.nether.net" <alcatel-nsp at puck.nether.net>
Subject:  [alcatel-nsp] 7750SR and Juniper MX480 VPLS full mesh interopt

Hi All,

Got question regarding the following VPLS setup:


- All PE suppose to be fully mesh in a triangular formation.
- 7750SR VPLS service configured using  mesh sdp with the 2 Juniper MX480.
- Server at MX480(A), while client PC at 7750SR.

Question is, when client PC wish to establish connection with server, will
there be a loop or mac-move trigger on 7750SR? Will the mesh-mesh violation
between MX480(B) and 7750SR take place hence deny any traffic traverse via
that LSP tunnel and instead traffic will proceed thru MX480(A)?

Appreciate if anyone could help and comment.... Thanks.


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