RFC 2974 (rfc2974) - Page 1 of 18
Session Announcement Protocol
Alternative Format: Original Text Document
Network Working Group M. Handley
Request for Comments: 2974 ACIRI
Category: Experimental C. Perkins
USC/ISI
E. Whelan
UCL
October 2000
Session Announcement Protocol
Status of this Memo
This memo defines an Experimental Protocol for the Internet
community. It does not specify an Internet standard of any kind.
Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2000). All Rights Reserved.
Abstract
This document describes version 2 of the multicast session directory
announcement protocol, Session Announcement Protocol (SAP), and the
related issues affecting security and scalability that should be
taken into account by implementors.
1 Introduction
In order to assist the advertisement of multicast multimedia
conferences and other multicast sessions, and to communicate the
relevant session setup information to prospective participants, a
distributed session directory may be used. An instance of such a
session directory periodically multicasts packets containing a
description of the session, and these advertisements are received by
other session directories such that potential remote participants can
use the session description to start the tools required to
participate in the session.
This memo describes the issues involved in the multicast announcement
of session description information and defines an announcement
protocol to be used. Sessions are described using the session
description protocol which is described in a companion memo [4].
Handley, et al. Experimental
