The MPLS-OPS Archive

[fraanro <fraanro@arrakis.es>]

>From my point of view, the kompella draft that Juniper follows is 
basically an extension to what Martini does. Martini defines both the 
encapsulation mechanisms and the signalling mechanisms for providing 
point to point services over MPLS for different technologies, ethernet, 
ATM, Frame Relay, PPP, ... But in real cases, specially for Frame Relay 
and ATM, a real customer service is formed by many point to point 
connections. So what Kompella does is provide a control plane based on 
MP-BGP in order to simplify the signalling and provisioning of a VPN of 
n sites, setting up automatically the nx(n-1) point to point circuits 
automatically. With Martini you would need to create them manually or 
using a provisioning tool able to do it for you.

On the other hand, for Ethernet technologies, Kompella still provides a 
point-to-point service. Here is where Lasserre-vKompella comes, 
providing a real multipoint service between n sites (that means MAC 
learning, and many other considerations). 

I think each draft has its applications. Regarding whether LDP is 
better than MP-BGP for signalling or not. I do not know, probably both 
have some pros and cons.

Regards,

----- Mensaje Original -----
Remitente: "Hamid Ould-Brahim" <hbrahim@nortelnetworks.com>
Fecha: Sabado, Noviembre 16, 2002 0:35 am
Asunto: RE: [MPLS-OPS]: MPLS/VPLS Vendors

> I think you touched on a point where there is still
> a lot of confusion.
> 
> Martini-l2 circuit is a layer 2 service that emulates
> a point to point layer-2 circuit over an MPLS network 
> whereas l2vpn-kompella (and some other proposals in this space) 
> is a vpn service that connects multiple customer sites 
> (member of the same vpn) in a given layer-2 topology
> across an IP/MPLS provider network. 
> 
> The two types of services are different and their
> problem and solution spaces are different as well 
> (even if most of l2vpns share some common building blocks 
> such as martini encapsulation).
> 
> So it may not be appropriate to compare l2-martini with
> l2vpn-kompella from a service, solution, and implementation 
> point of view since they are not solving exactly the 
> same problem.
> 
> My 2 cents...
> 
> Hamid.
> 
> > 
> > 
> > From the various conversation I have gathered in the past with 
> different> people.
> > 
> > L2-Kompella is more complicated to implement than l2-martini.
> > 
> > Cisco is aligned with martini, you can't be wrong if you side with
> > cisco.
> > 
> > The choices has nothing to do with what draft is superior...
> > 
> > -----Original Message-----
> > From: alok [mailto:alok.dube@apara.com] 
> > Sent: Friday, November 15, 2002 11:07 AM
> > To: Abe B. Chimpzi; mpls-ops@mplsrc.com
> > Subject: Re: [MPLS-OPS]: MPLS/VPLS Vendors
> > 
> > why is draft martini preferred over the other one?
> > 
> > im just curious...can someone please explain the same?
> > 
> > ----- Original Message -----
> > From: Abe B. Chimpzi <ChimpzAreUs@netscape.net>
> > To: <mpls-ops@mplsrc.com>
> > Sent: Saturday, November 16, 2002 12:05 AM
> > Subject: Re: [MPLS-OPS]: MPLS/VPLS Vendors
> > 
> > 
> > > Hello,
> > >
> > > According to
> > http://www.laurelnetworks.com/newsEvents/release60302.html,
> > > Laurel Networks also supports draft Martini (Etherne> >
> > > Level3 is deploying their platforms, but has anybody else have any
> > > working experience with the box?
> > >
> > > Regards,
> > > Abe.
> > >
> > >
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