A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session Initiation Protocol Working Group of the IETF.
Title : Session Initiation Protocol Extension to Assure
Congestion Safety
Author(s) : D. Willis, B. Campbell
Filename : draft-ietf-sip-congestsafe-01.txt
Pages : 13
Date : 2003-2-14
The Session Initiation Protocol allows the use of UDP for transport
of SIP messages. The use of UDP inherently risks network congestion
problems, as UDP itself does not define congestion prevention,
avoidance, detection, or correction mechanisms. This problem is
aggravated by large SIP messages which fragment at the UDP level.
Transport protocols in SIP are also negotiated on a per-hop basis, at
the SIP level, so SIP proxies may convert from TCP to UDP and so
forth. This document defines what it means for SIP nodes to be
congestion safe and specifies an extension by which a SIP User Agent
may require that its requests are treated in a congestion safe
manner.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-sip-congestsafe-01.txt
To remove yourself from the IETF Announcement list, send a message to
ietf-announce-request with the word unsubscribe in the body of the message.
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-ietf-sip-congestsafe-01.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:
mailserv@ietf.org.
In the body type:
"FILE /internet-drafts/draft-ietf-sip-congestsafe-01.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.
- <ftp://ftp.ietf.org/internet-drafts/draft-ietf-sip-congestsafe-01.txt>
-
