From: Swan, Jay (jswan@sugf.com)
Date: Tue Oct 30 2007 - 11:46:52 ART
Get a copy of "Definitive MPLS Network Designs" from Cisco Press. It
goes into considerable detail on these topics.
Jay
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Paul Juden
Sent: Tuesday, October 30, 2007 7:56 AM
To: ccielab@groupstudy.com
Subject: MPLS-TE within an ISP
I have been studying MPLS, and understand the basics here, but have
started to
read about MPLS-TE, and need some guidance on this subject from an ISP
point
of view. Is there anyone who has ISP knowledge (particulary BT in the
UK) who
might be able to shed some light on MPLS-TE.
I have read about the different
types of MPLS-TE, but I would like to understand how these are used /
implemented within an ISP. I am getting conflicting information and the
more I
read the more questions I have. Questions:
Q1. what type of MPLS-TE are
curently used by ISP's?
Q2. do ISP's use a hybrid transport network to carry
MPLS, ie below MPLS is another transport network used?
Q3. what are good
reading materials for MPLS-TE that put this into ISP context?
Q4 - ISP
scenario (is this sort of right??)
the PE routers use MBGP to facilitate the
use of multiple VPNS, these PE routers provide the next IP hop as
the
appropriate egress PE router for a VPN. Therefore the MPLS core network
must
provode LSP's to reach all the BGP next hops. At this point I am vague
how
MPLS-TE is used to build and maintain these LSP's??
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