Session Initiation Protocol Extension to Assure Congestion Safety
draft-ietf-sip-congestsafe-02

Document Type Expired Internet-Draft (sip WG)
Last updated 2015-10-14 (latest revision 2003-10-14)
Stream IETF
Intended RFC status Proposed Standard
Formats
Expired & archived
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Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Allison Mankin
Send notices to <rohan@cisco.com>

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-ietf-sip-congestsafe-02.txt

Abstract

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 by which a SIP User Agent may require that its requests are not sent over UDP or other transports having congestion-related characteristics similar to those of UDP.

Authors

Ben Campbell (bcampbell@dynamicsoft.com)
Dean Willis (dean.willis@softarmor.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)