RFC 5390 on Requirements for Management of Overload in the Session Initiation Protocol

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        RFC 5390

        Title:      Requirements for Management of Overload 
                    in the Session Initiation Protocol 
        Author:     J. Rosenberg
        Status:     Informational
        Date:       December 2008
        Mailbox:    jdrosen at cisco.com
        Pages:      14
        Characters: 32851
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-sipping-overload-reqs-05.txt

        URL:        http://www.rfc-editor.org/rfc/rfc5390.txt

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.

This document is a product of the Session Initiation Proposal Investigation Working Group of the IETF.


INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
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