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Status:

PROPOSED STANDARD

Authors:

H. Kaplan
V. Pascual

Stream:

IETF

Source:

straw (rai)

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DOI:  https://doi.org/10.17487/RFC7332

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Abstract

SIP Back-to-Back User Agents (B2BUAs) can cause unending SIP requestrouting loops because, as User Agent Clients, they can generate SIPrequests with new Max-Forwards values. This document discusses thedifficulties associated with loop detection for B2BUAs and therequirements for them to prevent infinite loops.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.