A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Connectionless Multicast
Author(s) : D. Ooms, W. Livens, O. Paridaens
Filename : draft-ooms-cl-multicast-02.txt
Pages : 24
Date : 21-Apr-00
This draft proposes a new mechanism for multipoint-to-multipoint
(mp2mp) communication in IP networks, namely Connectionless Multicast
(CLM). Instead of a group address, a list of member addresses is
encoded in the data packets.
The traditional Host Group Model [DEER] for IP multicast requires a
globally unique address for each session. To support this model,
multicast routing protocols create state per group in the routers.
Like any connection oriented protocol, it suffers from scalability
problems in backbone networks where the number of groups to be
maintained can be huge. CLM does not have this problem, and
additionally has some other advantages. Its limitation lies in the
number of members per multicast session, not in the number of
sessions. CLM will not replace the traditional multicast model. CLM
offers an alternative for mp2mp communication in the cases that
traditional multicast becomes problematic.
The pros and cons of CLM are described and suggestions are made to
alleviate the disadvantages. Furthermore different modes of
operation are described: an end-to-end mode in close conjunction with
SIP (Session Initiation Protocol [HAND]), as well as an interworking
mode with PIM-SM and Simple Multicast. Both IPv4 and IPv6 are
considered.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ooms-cl-multicast-02.txt
Internet-Drafts are also 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-ooms-cl-multicast-02.txt".
A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
Internet-Drafts can also be obtained by e-mail.
Send a message to:
[EMAIL PROTECTED]
In the body type:
"FILE /internet-drafts/draft-ooms-cl-multicast-02.txt".
NOTE: The mail server at ietf.org 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.
draft-ooms-cl-multicast-02.txt
