Differentiated Services (DiffServ) and Real-time Communication

Document Type Expired Internet-Draft (individual)
Authors Dan York  , David Black  , Cullen Jennings  , Paul Jones 
Last updated 2015-01-05 (latest revision 2014-07-04)
Stream (None)
Expired & archived
plain text xml pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document 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 Code Points (DSCPs). As a result, use of different DSCPs within a single traffic stream may cause transport protocol interactions (e.g., reordering). In addition, DSCP markings may be changed or removed between the traffic source and destination. This document covers the implications of these DiffServ aspects for real-time network communication, including RTCWEB.


Dan York (dyork@lodestar2.com)
David Black (david.black@emc.com)
Cullen Jennings (fluffy@cisco.com)
Paul Jones (paulej@packetizer.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)