hi all,
here is some extra remarks on the
A Model for Open Pluggable Edge Services draft
draft-tomlinson-opes-model-00.txt.
please read between the text
abbie barbir
Nortelnetworks
-----Original Message-----
From: Penno, Reinaldo [SC9:T327:EXCH]
Sent: Thursday, July 26, 2001 10:41 PM
To: 'Michael W. Condry'; 'ietf-openproxy(_at_)imc(_dot_)org'
Subject: RE: draft-tomlinson-opes-model-00.txt
First IMO the draft it too biased on "Content Networks". OPES
can provide "Content Services" to any network that provide
content to the user.
yes, i agree with reinaldo, OPES exists independent of CDI
HERE I MADE ADD,
The concept of edge services as an overlay is ok, however, the way that is
presented in the draft is too restrictive for the following reason(s)
- it assumes that each overlay is independent with a seperate authorative
entity.
------ here, we can extend the concept of an edge services overlay to
broder range, there is no restriction for several access providers or ISPs
to cooporate such that their edge services become an extended overlay (an
overlay of overlays).
- the overlays can also be combined, basically, a content overlay can be
defined that provide content to one or more edge services overlays (or from
above a virtual edge services overlay that is composed of various edge
services overlays).
- the same can be said about client overlays. (here, an overlay can be
defined that allow clients to roam across various edge services overlay(s)).
in fact, the edge services overlay model can be used as an alternative to
the cdi peering model,
in this case, the content provider(s) can be though off as having their own
overlay(s). the edge services as another overlay and the clients as an
overlay.
for an OPES intermeiary (surrogate) to act on behalf of a content source, it
has to subscribe to the content overlay (similar analogy can be used about
surrogates or caches).
we can discuss the analogy further if there is interest
hope the above helps
abbie