re: Network Models

[Tom Scott <telecomtom@dacor.net>]

Laurent,

A unified model of the Internet doesn't exist, yet. But it's reassuring
to know that you're interested in it.

Recall Bert and Scott's ascii art:

Applications         +-------+  +-------+        (new) Hour glass
that use CCAMP: \    | TE-WG |  | PPVPN |  ...           /
                 \   +-------+  +-------+               /
                  \     +----------------------+       /
                   \    |         CCAMP        |      /
                    \   |-----------+----------|     /  
                    /   |   C       |    M   --|------ IGP LSA ext
                   /    | control   | measure  |     \  
                  /     +----------------------+      \
Technologies to  / +----+ +----+ +----+ +----+ +----+  \
measure/control:/  |MPLS| |OPT | |RPR | |ATM | | FR |...\
                   +----+ +----+ +----+ +----+ +----+

As you indicate, to move in the direction of completeness one would
explicitly include: all three planes (user/data, control, management);
all four GMPLS transports (packets/cells, time slots, lambdas, strands);
a unified model of information flows including routing updates, policy
and SNMP-related exchanges; the unification of control and management
protocols called for in Maarten Vissers' CD (ASTN Layer Network
Architecture); the PWE3/MSS initiatives; and a few other things like
ASM/SDL analysis of it all ala sdl-forum.org (always leaving the
backdoor open). 

As indicated in the diagram above, the target application would be
traffic engineering, as specified in Jerry Ash's TE draft in a unified
next-generation SNMP framework.

-- From a logical point of view, TT
------------------/\----------------------
Tom Nelson Scott         1411 Sheffield Dr
VedatelCo           Bowling Green OH 43402
"Java/XML Rules"     "In IP/MPLS We Trust"
            "E Pluribus Fiber"  
------------------\/----------------------


-------- Original Message --------
Subject: [IP-Optical] Network Models
Date: Tue, 15 May 2001 10:07:54 +0200
From: Laurent Silvio Ciavaglia <laurent.ciavaglia@alcatel.fr>
Organization: Alcatel Research & Innovation
To: ccamp@ops.ietf.org, mpls@uu.net,
ip-optical@lists.bell-labs.com,te-wg@ops.ietf.org

Dear all,

I am interested in finding information about network models, i.e. peer
vs overlay vs augmented or integrated... I am looking for some scenari
comparison + implications (routing, policing, TE, signaling) of such
models, how do network models fit in the GMPLS framework ?
If anyone can provide me with some pointers...

Regards
Laurent C.