Steve,
MPLS is alot more then just ATM PNNI at layer 3. Your statement is
semi true when talking about MPLS VPN's the concept does come from ATM but
there is so much more you can do with it go read on traffic engineering, the
fish bowl effect, valued added services (VPNs) and the network protection.
As for your other statement saying that cisco uses RSVP and everyone
else doesn't. This also is wrong. Cisco uses TDP wich is a label
distribution protocol that is proprietary but they also support the standard
LDP (RFC 3630) that Juniper and Everyone else are supporting. Juniper
personnaly doesn't have as much support for LDP then RSVP-TE (rsvp has
existed for a couple of years its the TE extensions that are used in Traffic
engineering). But when you start talking about this be sure to know what you
are talking about. BTW you can't use LDP or TDP to do MPLS
traffic-Engineering ( and this is the killer app of MPLS).
I hope this clarifies a few things, I also hope you don't take this
the wrong way but go read on the juniper site about RSVP-TE it will clarify
alot of things for you. Hope this was helpfull and if you have any questions
don't be shy.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Stephen Skinner
Sent: May 24, 2001 3:37 AM
To: [EMAIL PROTECTED]
Subject: Re: Isn't MPLS basically just ATM PNNI, but for layer 3?
[7:5703]
hi,
i to have been reading alot and working with MPLS.....
i personally liken it to Switching more than routing
...i know it uses BGP and also uses static routes,but essentially it just
switches packets over pre-defined paths from device to device .......
I also see a future for this simply in the Telco enviroment ....everyone
(cisco Juni and foundry are supporting it ...albeit in different forms..cisc
is using RSVP and everyone else isn`t) and the speed increases seem to be
worth it....
but as ever only my workload and time will tell.
steve
>From: "nrf"
>Reply-To: "nrf"
>To: [EMAIL PROTECTED]
>Subject: Isn't MPLS basically just ATM PNNI, but for layer 3? [7:5660]
>Date: Wed, 23 May 2001 21:18:21 -0400
>
>I would like to hear some opinions on MPLS. I have been reading about it,
>and, pardon me if I'm wrong, but it seems to me like just a reinvention of
>ATM PNNI.
>
>I would be very interested in hearing some comments on the future of MPLS.
>Particularly since ATM PNNI seemed to have gotten nowhere with the telcos
>(and I still don't completely understand why not), then why is MPLS going
>to
>do any better (or is it)?
>
>I would be particularly interested in hearing Howard Berkowitz's opinion on
>the future of MPLS.
>
>Thanx
>FAQ, list archives, and subscription info:
>http://www.groupstudy.com/list/cisco.html
>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
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