I-D ACTION:draft-armitage-ion-venus-03.txt

[[e-mail]]

 A Revised Internet-Draft is available from the on-line Internet-Drafts
 directories.


       Title     : VENUS - Very Extensive Non-Unicast Service
       Author(s) : G. Armitage
       Filename  : draft-armitage-ion-venus-03.txt
       Pages     : 13
       Date      : 06/17/1997

The MARS model (RFC2022) provides a solution to intra-LIS IP multicasting
over ATM, establishing and managing the use of ATM pt-mpt SVCs for IP
multicast packet forwarding. Inter-LIS multicast forwarding is achieved
using Mrouters, in a similar manner to which the `Classical IP over ATM'
model uses Routers to inter-connect LISes for unicast traffic. The
development of unicast IP shortcut mechanisms (e.g.  NHRP) has led some
people to request the development of a Multicast equivalent. There are a
number of different approaches. This document focuses exclusively on the
problems associated with extending the MARS model to cover multiple
clusters or clusters spanning more than one subnet. It describes a
hypothetical solution, dubbed `Very Extensive NonUnicast Service' (VENUS),
and shows how complex such a service would be. It is also noted that VENUS
ultimately has the look and feel of a single, large cluster using a
distributed MARS.  This document is being issued to help focus ION efforts
towards alternative solutions for establishing ATM level multicast
connections between LISes.

Internet-Drafts are available by anonymous FTP.  Login with the username
"anonymous" and a password of your e-mail address.  After logging in,
type "cd internet-drafts" and then
     "get draft-armitage-ion-venus-03.txt".
A URL for the Internet-Draft is:
ftp://ds.internic.net/internet-drafts/draft-armitage-ion-venus-03.txt

Internet-Drafts directories are located at:

     o  Africa:  ftp.is.co.za

     o  Europe:  ftp.nordu.net
		 ftp.nis.garr.it

     o  Pacific Rim: munnari.oz.au

     o  US East Coast: ds.internic.net

     o  US West Coast: ftp.isi.edu

Internet-Drafts are also available by mail.

Send a message to:  [e-mail]. In the body type:
     "FILE /internet-drafts/draft-armitage-ion-venus-03.txt".

NOTE: The mail server at ds.internic.net can return the document in
      MIME-encoded form by using the "mpack" utility.  To use this
      feature, insert the command "ENCODING mime" before the "FILE"
      command.  To decode the response(s), you will need "munpack" or
      a MIME-compliant mail reader.  Different MIME-compliant mail readers
      exhibit different behavior, especially when dealing with
      "multipart" MIME messages (i.e., documents which have been split
      up into multiple messages), so check your local documentation on
      how to manipulate these messages.



Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version
of the Internet-Draft.

ftp://ds.internic.net/internet-drafts/draft-armitage-ion-venus-03.txt"><ftp://ds.internic.net/internet-drafts/draft-armitage-ion-venus-03.txt>