Metro Ethernet, VPLS clarifications
Adam Vitkovsky
adam.vitkovsky at swan.sk
Wed Feb 6 15:19:07 UTC 2013
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 at 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 <khelms at 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
> --------------------------------
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