Identifying and Handling Non Queue Building Flows in a Bottleneck Link

Document Type Replaced Internet-Draft (candidate for tsvwg WG)
Authors Greg White  , Thomas Fossati 
Last updated 2019-08-21 (latest revision 2019-06-28)
Replaced by draft-ietf-tsvwg-nqb
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state Call For Adoption By WG Issued
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-tsvwg-nqb
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This draft proposes the definition of a standardized DiffServ code point (DSCP) to identify Non-Queue-Building flows (for example: interactive voice and video, gaming, machine to machine applications), along with a Per-Hop-Behavior (PHB) that provides a separate queue for such flows. The purpose of such a marking scheme is to enable networks to provide and utilize queues that are optimized to provide low latency and low loss for such Non-Queue-Building flows (e.g. shallow buffers, optimized media access parameters, etc.). This marking scheme and PHB has been developed primarily for use by access network segments, where queuing delays and queuing loss caused by Queue-Building protocols are manifested. In particular, applications to cable broadband links and mobile network radio and core segments are discussed.


Greg White (
Thomas Fossati (

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