Hrrm..
So are you saying, even tho L2-Kompella is all about
Layer2, you can only do IP??
Hence, on a Juniper router running JunOS 5.2R1, if
you mix and match ATM and Frame, it will only work
for IP traffic even tho it is l2vpn??
thanks
-joe
---- Guy Davies <Guy.Davies@telindus.co.uk> wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi Joe,
>
> I described l2vpn (along with its pros and cons) in
my email. Which
> specific case are you asking about?
>
> Basically, if you want to use the same
encapsulation at both ends,
> l2vpn is L3 protocol agnostic. However, if you
want to do
> interworking (say between ATM and PPP), you can
only carry IP. It's
> all in the draft which I referenced in my earlier
email.
>
> Martini specifies that the encapsulation must be
the same at both
> ends and has, AFAIK, no mechanism for interworking.
>
> CCC has the new encapsulation types (ending in -
tcc) which allow you
> to do translation between ATM, FR and PPP (not sure
about cisco-hdlc
> and I know that it currently excludes ethernet). I
can't remember
> what the limitations are wrt the L3 traffic.
>
> Regards,
>
> Guy
>
> > -----Original Message-----
> > From: Joe Lin [mailto:jlin@doradosoftware.com]
> > Sent: Thursday, February 14, 2002 12:18 PM
> > To: Guy Davies; 'Sophia Lei'; 'dave o'leary';
> > juniper-nsp@puck.nether.net
> > Subject: RE: [j-nsp] two VPN sites and CCC
> >
> >
> > Couldn't L2-VPN based on draft-kompella work
instead
> > of CCC also in this case?
> >
> >
> > ---- Guy Davies <Guy.Davies@telindus.co.uk> wrote:
> > >
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > >
> > > Hi Sophia
> > >
> > > > -----Original Message-----
> > > > From: Sophia Lei [mailto:sophialeii@yahoo.com]
> > > > Sent: Wednesday, February 13, 2002 5:24 PM
> > > > To: Guy Davies; 'dave o'leary'; juniper-
> > nsp@puck.nether.net
> > > > Subject: RE: [j-nsp] two VPN sites and CCC
> > > >
> > > >
> > > > > Hi Sophia,
> > > > >
> > > > > Other L2 VPN technologies should also do
the
> > trick
> > > > > (e.g. martini,
> > > > > l2vpn and gre, as mentioned by Dave).
Since
> > CCC is
> > > > > not based on a
> > > > > standard, it is likely to be available only
on
> > > > > networks using Juniper
> > > > > at the edge. CCC has recently had some
> > interesting
> > > > > new capabilities
> > > > > added which allow it to connect diverse
> > > > > encapsulations (e.g. ATM to
> > > > > FR or PPP to FR but, unfortunately, not yet
> > > > > including Enet).
> > > > >
> > > >
> > > > Hello,
> > > >
> > > > "First, thank you for all your help."
> > > >
> > > > That's good to hear. When you
> > mention "recently...
> > > > new capability added...", do you mean in
JUNOS
> > latest
> > > > 5.2 code?
> > >
> > > Yes. It's in 5.2.
> > >
> > > > I just read through the release note and it
> > > > says "Layer 2 VPN interwokring for PPP,
HDLC..."
> > but
> > > > it also
> > > > mentions "Enables you to configure
encapsulation
> > for
> > > > transmitting IPv4."
> > > >
> > > > Does that mean I cannot transmit my IPX
traffic
> > using
> > > > the Layer 2 VPN interwokring capability -
i.e. one
> > > > side of my link is ppp and the other is F/R
for
> > my IPX
> > > > traffic?
> > >
> > > That's correct. It's a feature of the l2vpn
draft
> > > (http://www.ietf.org/internet-drafts/draft-
kompella-
> > ppvpn-l2vpn-01.txt
> > > ) rather than a feature/failing of Juniper's
> > implementation. :-)
> > >
> > > > > Martini and l2vpn are limited to similar
> > > > > encapsulations at both ends
> > > > > of the VPN (the l2vpn draft does provide for
> > > > > interworking of
> > > > > differing encapsulations so long as you
only
> > want to
> > > > > carry IP but
> > > > > that doesn't meet your requirements).
> > > > >
> > > >
> > > > This sounds the answer for the above question
> > is "NO
> > > > for my IPX traffic. But if my two links are
> > same, I
> > > > can use Martini or l2vpn for my IPX traffic,
> > right?
> > >
> > > Yes. For similar encapsulations, the L3
protocol
> > is irrelevant.
> > > Unfortunately, for the interworking, the L3
> > protocol must be IP.
> > >
> > > > The CCC recently added interworking solution
> > probably
> > > > is the best even it is not the standard,
right?
> > Or it
> > > > is just part of l2vpn solution for doing
> > > > encapsulation.
> > >
> > > Well. I don't know if the CCC interworking
> > solution would support
> > > IPX either. I haven't had any customers asking
to
> > do IPX over L2
> > > VPNs (in general, rather than l2vpn
specifically)
> > before and the
> > > interworking is so new that I can't say I've
tried
> > it.
> > >
> > > > Thank you very much.
> > >
> > > You're welcome.
> > >
> > > Regards,
> > >
> > > Guy
> > >
> > > > Sophia
> > > > /IT
> > > >
> > > > > Hope that helps.
> > > > >
> > > > > Guy
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: dave o'leary
> > [mailto:doleary@juniper.net]
> > > > > > Sent: Wednesday, February 13, 2002 3:56 PM
> > > > > > To: Sophia Lei; juniper-
nsp@puck.nether.net
> > > > > > Subject: Re: [j-nsp] two VPN sites and CCC
> > > > > >
> > > > > >
> > > > > > At 02:18 AM 2/13/2002 -0500, Sophia Lei
wrote:
> > > > > > >Hello,
> > > > > > >
> > > > > > > >From documentation, it seems CCC
> > supporting L2
> > > > > frame
> > > > > > >transport over MPLS. Can I transport
IPX
> > traffic
> > > > > > >through my SP's MPLS+CCC network for my
VPN
> > > > > sites?
> > > > > > >I think it can as L2+IPX is just a L2
frame,
> > > > > right?
> > > > > >
> > > > > > Correct.
> > > > > >
> > > > > > >Any other way to do it if my SP don't do
CCC?
> > > > > >
> > > > > > Switch service providers? :-)
> > > > > >
> > > > > > Something like GRE tunneling on the CPE
> > routers
> > > > > could also be used.
> > > > > >
> > > > >
> > >
> > > > > dave
> > > > > >
> > > > >
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> > > > > .
> > > > >
> > > > >
> > > >
> > > >
> > > >
__________________________________________________
> > > > Do You Yahoo!?
> > > > Send FREE Valentine eCards with Yahoo!
Greetings!
> > > > http://greetings.yahoo.com
> > > >
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This archive was generated by hypermail 2b29 : Mon Aug 05 2002 - 10:42:39 EDT