Why VPLS and not L3 VPNs ???

Unanswered Question
Sep 9th, 2007
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Hi all

Please bare with me, i know a lot has been written about what VPLS is, I have read the postings, but maybe someone can in simple terms answer my qn for me;

Why should one go for VPLS and not L3 VPNs or L3 VPNs and not VPLS, i need arguments from both the enterprise point and the ISP point

Hope you get my Question



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Overall Rating: 4 (1 ratings)



+No need to involve the ISP for routing issues

+Support non-IP protocols - IPX, AppleTalk etc..

-Difficult to troubleshoot

-Possible to make a L2-loop

-Customers could overflow mac-tables.


+ISP control the routing process - or the customer could control the CE-PE, and control it's own routing.

+Loops are avoided with routing-protocols

-Non-IP protocols have to be encapsulated to work

Personally I liked the VPLS best before, but after choosing an ISP supporting PE-CE-protocols, not using static's and has a good support centre, I always recommend L3VPN's.

Also within our own MPLS-network we always use L3. (with no 7600's VPLS is not supported...) EoMPLS is not used permanently used within out MPLS, but could be used for moving a customer from one datacenter to another, or other special timelimited purpose...

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mmrrittner Tue, 09/11/2007 - 04:28
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VPLS built easy cluster?s for data center in different locations. easy migration, outsourcing for datacenter etc.




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