Requirements for Management of Overload in the Session Initiation Protocol
RFC 5390, “Requirements for Management of Overload in the Session Initiation Protocol”, is an Informational document published in December 2008 by J. Rosenberg. The canonical text is published by the RFC Editor.
Abstract
Overload occurs in Session Initiation Protocol (SIP) networks when proxies and user agents have insufficient resources to complete the processing of a request. SIP provides limited support for overload handling through its 503 response code, which tells an upstream element that it is overloaded. However, numerous problems have been identified with this mechanism. This document summarizes the problems with the existing 503 mechanism, and provides some requirements for a solution. This memo provides information for the Internet community.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 5390 is hosted at rfc-editor.org. Available in TXT,HTML.
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