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IETF RFC 7657
[ACTIVE]

Differentiated Services (Diffserv) and Real-Time Communication

Metadata

Publisher
IETF
Doc Type
Informational
Pages
26
Abstract
This memo describes the interaction between Differentiated Services (Diffserv) network quality-of-service (QoS) functionality and real- time network communication, including communication based on the Real-time Transport Protocol (RTP). Diffserv is based on network nodes applying different forwarding treatments to packets whose IP headers are marked with different Diffserv Codepoints (DSCPs). WebRTC applications, as well as some conferencing applications, have begun using the Session Description Protocol (SDP) bundle negotiation mechanism to send multiple traffic streams with different QoS requirements using the same network 5-tuple. The results of using multiple DSCPs to obtain different QoS treatments within a single network 5-tuple have transport protocol interactions, particularly with congestion control functionality (e.g., reordering). In addition, DSCP markings may be changed or removed between the traffic source and destination. This memo covers the implications of these Diffserv aspects for real-time network communication, including WebRTC.
Publication Date
2015-11-01
Status Note
Informational
DOI
10.17487/RFC7657
Link
https://doi.org/10.17487/RFC7657
Author(s)
David L. Black
Paul Jones
Keyword(s)
DiffServ, DSCP, RAI, RTP
Latest version of IETF RFC 7657

Document Versions — IETF RFC 7657

  • ▶ IETF RFC 7657 (2015-11-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

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IETF RFC 7657, Differentiated Services (Diffserv) and Real-Time Communication. Available at https://doi.org/10.17487/RFC7657
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IETF RFC 7657, Differentiated Services (Diffserv) and Real-Time Communication. Available at https://doi.org/10.17487/RFC7657

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IETF RFC 7657, Differentiated Services (Diffserv) and Real-Time Communication. Available at https://doi.org/10.17487/RFC7657
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<span class="citation"><cite>IETF RFC 7657</cite>, Differentiated Services (Diffserv) and Real-Time Communication. Available at <a href="https://doi.org/10.17487/RFC7657" target="_blank" rel="noopener">https://doi.org/10.17487/RFC7657</a></span>

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IETF RFC 7657, Differentiated Services (Diffserv) and Real-Time Communication
doi: 10.17487/RFC7657
url: https://doi.org/10.17487/RFC7657
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<cite id="bib-rfc7657">IETF RFC 7657</cite>, Differentiated Services (Diffserv) and Real-Time Communication
<span class="doi">10.17487/RFC7657</span>
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