Why VPLS and not L3 VPNs ???

emaamur2006 · ‎09-09-2007

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

Regards

MM

lars.molstad · ‎09-09-2007

Well..

VPLS:

+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.

L3-VPN:

+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...

L@rs

emaamur2006 · ‎09-15-2007

Thanks Lars

Much appreciated

MM

mmrrittner · ‎09-11-2007

hello,

VPLS built easy cluster?s for data center in different locations. easy migration, outsourcing for datacenter etc.

regards

michael