[c-nsp] BGP Signalled VPLS

Saku Ytti saku at ytti.fi
Tue Apr 23 04:30:25 EDT 2013

On (2013-04-23 09:35 +0200), Adam Vitkovsky wrote:

> Anyways my question was regarding the "old school" VPLS as we all do it
> right now and LDP vs BGP signaling in particular. 
> I'd like to find out which one do you folks prefer and why. 

BGP, for all customer stuff, BGP. LDP only for IGP labels, and hopefully
not even that in 3 years time.

For VPLS if you're already doing discovery via BGP, running tLDP is just
additional complexity you don't need. LDP clearly scales poorly, BGP is
O(1) session to cater n remote PE, LDP is O(n)

If you're not doing discovery via BGP, configuration is awkward and complex
compared to L3 MPLS VPN.


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