[160453] in North American Network Operators' Group
RE: Metro Ethernet, VPLS clarifications
daemon@ATHENA.MIT.EDU (Adam Vitkovsky)
Wed Feb 6 10:27:20 2013
From: Adam Vitkovsky <adam.vitkovsky@swan.sk>
To: 'Fabien Delmotte' <fdelmotte1@mac.com>, 'Scott Helms' <khelms@zcorum.com>
In-Reply-To: <B656667B-EEFC-4EBC-A525-301C789F90E6@mac.com>
Date: Wed, 6 Feb 2013 16:19:07 +0100
Cc: 'NANOG' <nanog@nanog.org>, 'Abzal Sembay' <serian.reg@gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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:fdelmotte1@mac.com]=20
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=20
> technologies and is independent of the underlying technology because=20
> it builds it pseudo wires at layers 3 & 4. VPLS leverages technologies =
> like Metro Ethernet and MPLS to extend a business' Ethernet LAN=20
> (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 f=E9vr. 2013 =E0 15:41, Scott Helms <khelms@zcorum.com> a =E9crit :
>>=20
>> From my understanding M-Ethernet is a some kind of service.=20
>> Standartized technology that allows to connect multiple different=20
>> networks. And it is independent from physical and datalink layers.
>>=20
>=20
> Metro Ethernet is a datalink (layer 2) protocol. It also has physical =
> (layer 1) specifications though there are several kinds of physical=20
> medium that can be used. Most commonly its delivered over fiber=20
> (single or multi-mode depending on distance from the last active=20
> element) or cat 5E/6 twisted pair.
>=20
>=20
>=20
>> And nowadays which tecnology is the most used(VPLS or Metro)? What=20
>> about MPLS? Sorry I'm a little confused. I really want to understand.
>>=20
>=20
> VPLS can be run across several different kinds of layer 1 & 2=20
> technologies and is independent of the underlying technology because=20
> it builds it pseudo wires at layers 3 & 4. VPLS leverages technologies =
> like Metro Ethernet and MPLS to extend a business' Ethernet LAN=20
> (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.
>=20
> Here are the main two RFCs:
>=20
> http://tools.ietf.org/html/rfc4761
> http://tools.ietf.org/html/rfc4762
>=20
>=20
>>=20
>>=20
>> --
>> Regards,
>>=20
>> Abzal
>>=20
>>=20
>=20
>=20
> --
> Scott Helms
> Vice President of Technology
> ZCorum
> (678) 507-5000
> --------------------------------
> http://twitter.com/kscotthelms
> --------------------------------
