And for fun you can also do: Ethernet over PBB to VPLS Ethernet over PBB over VPLS -that's actually called EVPN
adam -----Original Message----- From: Fabien Delmotte [mailto:fdelmot...@mac.com] Sent: Wednesday, February 06, 2013 4:07 PM To: Scott Helms Cc: NANOG; Abzal Sembay Subject: Re: Metro Ethernet, VPLS clarifications Hi, My 2 cents > VPLS can be run across several different kinds of layer 1 & 2 > technologies and is independent of the underlying technology because > it builds it pseudo wires at layers 3 & 4. VPLS leverages technologies > like Metro Ethernet and MPLS to extend a business' Ethernet LAN > (technically the broadcast domain) to remote sites. At the end of the > day you can use several kinds of tunneling technologies to provide VPLS, including GRE, MPLS, and L2TPv3. For fun you can also do : LDP VPLS over a GRE tunnel LDP over a GRE tunnel within an encrypted network I can be wrong but VPLS is running over MPLS (rfc 4762) because it is using LDP Regards Fabien Le 6 févr. 2013 à 15:41, Scott Helms <khe...@zcorum.com> a écrit : >> >> From my understanding M-Ethernet is a some kind of service. >> Standartized technology that allows to connect multiple different >> networks. And it is independent from physical and datalink layers. >> > > Metro Ethernet is a datalink (layer 2) protocol. It also has physical > (layer 1) specifications though there are several kinds of physical > medium that can be used. Most commonly its delivered over fiber > (single or multi-mode depending on distance from the last active > element) or cat 5E/6 twisted pair. > > > >> And nowadays which tecnology is the most used(VPLS or Metro)? What >> about MPLS? Sorry I'm a little confused. I really want to understand. >> > > VPLS can be run across several different kinds of layer 1 & 2 > technologies and is independent of the underlying technology because > it builds it pseudo wires at layers 3 & 4. VPLS leverages technologies > like Metro Ethernet and MPLS to extend a business' Ethernet LAN > (technically the broadcast domain) to remote sites. At the end of the > day you can use several kinds of tunneling technologies to provide VPLS, including GRE, MPLS, and L2TPv3. > > Here are the main two RFCs: > > http://tools.ietf.org/html/rfc4761 > http://tools.ietf.org/html/rfc4762 > > >> >> >> -- >> Regards, >> >> Abzal >> >> > > > -- > Scott Helms > Vice President of Technology > ZCorum > (678) 507-5000 > -------------------------------- > http://twitter.com/kscotthelms > --------------------------------
