A new Request for Comments is now available in online RFC libraries.
RFC 7332
Title: Loop Detection Mechanisms for Session
Initiation Protocol (SIP)
Back-to-Back User Agents (B2BUAs)
Author: H. Kaplan, V. Pascual
Status: Standards Track
Stream: IETF
Date: August 2014
Mailbox: [email protected],
[email protected]
Pages: 5
Characters: 11157
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-straw-b2bua-loop-detection-04.txt
URL: https://www.rfc-editor.org/rfc/rfc7332.txt
SIP Back-to-Back User Agents (B2BUAs) can cause unending SIP request
routing loops because, as User Agent Clients, they can generate SIP
requests with new Max-Forwards values. This document discusses the
difficulties associated with loop detection for B2BUAs and the
requirements for them to prevent infinite loops.
This document is a product of the Sip Traversal Required for Applications to
Work Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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