[160467] in North American Network Operators' Group
Re: Metro Ethernet, VPLS clarifications
daemon@ATHENA.MIT.EDU (Fabien Delmotte)
Wed Feb 6 11:24:15 2013
From: Fabien Delmotte <fdelmotte1@mac.com>
In-reply-to: <00e501ce047d$4eccc9b0$ec665d10$@swan.sk>
Date: Wed, 06 Feb 2013 17:21:40 +0100
To: Adam Vitkovsky <adam.vitkovsky@swan.sk>
Cc: 'NANOG' <nanog@nanog.org>, 'Abzal Sembay' <serian.reg@gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I thought that PBB was dead :)
if not forget VPLS and play with PBB and PBT :)
Welcome in the "twilight zone"
Fabien
Le 6 f=E9vr. 2013 =E0 16:19, Adam Vitkovsky <adam.vitkovsky@swan.sk> a =
=E9crit :
> And for fun you can also do:
> Ethernet over PBB to VPLS
> Ethernet over PBB over VPLS -that's actually called EVPN
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> 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
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> Hi,
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> My 2 cents
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>> 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=20
>> like Metro Ethernet and MPLS to extend a business' Ethernet LAN=20
>> (technically the broadcast domain) to remote sites. At the end of =
the=20
>> day you can use several kinds of tunneling technologies to provide =
VPLS,
> including GRE, MPLS, and L2TPv3.
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> For fun you can also do :
> LDP VPLS over a GRE tunnel
> LDP over a GRE tunnel within an encrypted network
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> I can be wrong but VPLS is running over MPLS (rfc 4762) because it is =
using
> LDP
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> Regards
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> Fabien
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>=20
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> Le 6 f=E9vr. 2013 =E0 15:41, Scott Helms <khelms@zcorum.com> a =E9crit =
:
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>>>=20
>>> =46rom 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=20
>> (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=20
>> like Metro Ethernet and MPLS to extend a business' Ethernet LAN=20
>> (technically the broadcast domain) to remote sites. At the end of =
the=20
>> 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
>> --------------------------------
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