From: Scott Morris (swm@emanon.com)
Date: Sun Nov 20 2005 - 16:17:07 GMT-3
That's not always true. Perhaps the carrier that you deal with it is, but
certainly not all of them! I have had more customers lately that have PPP
encapsulation on the CE side than I have other encapsulations. Trend? Who
knows. But it certainly tells me there is no standard answer!
Cheers,
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Leo
Leung
Sent: Sunday, November 20, 2005 1:32 PM
To: Peter Van Oene; David Hoon
Cc: ccielab@groupstudy.com
Subject: Re: OT: MPLS VPN PE-CE encapsulation
Carriers have ATM configured on PE routers and translated in layer 2 cloud
to Frame-Relay for CE routers. It's not common to have PPP and HDLC for CE.
Just a thought, even you can do now, there could be a huge re-design work
once there's a change...
Leo
--- Peter Van Oene <petvan@gmail.com> wrote:
> If you are going to manage the CPE, frame is almost a must here.
>
> P
>
>
> On 11/18/05, David Hoon <david.hoon.ccie@gmail.com>
> wrote:
> >
> > Hi,
> > Sorry for off-topic. I'm now doing a large scale
> Layer 3 MPLS VPN
> > deployment design, and stuck with which
> encapsulation we should use for
> > PE-CE connection. We have three options now: Cisco
> HDLC, PPP and Frame
> > Relay.
> > Technically, I don't see much different among
> these encapsulation types.
> > The provider leans forward to frame relay, with PE
> as a frame relay DCE
> > equipment. The reason is easy for migration (we
> use frame relay now), and
> > fr
> > can have sub-interfaces. HDLC and PPP has one-byte
> less header, no big
> > deal.
> > PPP has authentication, which I doubt we are going
> to use. Frame relay has
> > one more parameter (DLCI) to be managed; however,
> all branches will just
> > share the same DLCI. QoS are just the same, please
> correct me if I'm
> > wrong.
> > I don't see any differents, so for the sake of
> simple migration, I would
> > go
> > frame relay. But if this is a new installation, I
> would go for Cisco HDLC
> > or
> > PPP, for simple configuration. Running frame relay
> is make sense but
> > against
> > my guts. Any recommendation from real world
> installation?
> > Thanks a lot.
> > Best regards,
> > David Hoon
> > CCIE #14141
> >
> >
>
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