Hello All, We have posted an updated version of HPCC++ at https://datatracker.ietf.org/doc/draft-miao-rtgwg-hpccplus/ .
There are two major changes since the last presentation. First, since HPCC++ is orthogonal to different in-band telemetry formats and transport protocols, we introduce a few reference implementations over those protocols for people to quickly pick up. Second, we advocate a better routing scheme for path selection and traffic admission, building on top of HPCC++'s precise link load information. Please provide any comments you may have on the draft or its extensions. Thanks, Rui ------------------------------------------------------------------ From:internet-drafts <[email protected]> Sent At:2022 Mar. 7 (Mon.) 14:35 To:Harry <[email protected]>; Barak Gafni <[email protected]>; Changhoon Kim <[email protected]>; Jeff Tantsura <[email protected]>; Jeongkeun Lee <[email protected]>; Rong Pan <[email protected]>; Rui <[email protected]>; Yuval Shpigelman <[email protected]> Subject:New Version Notification for draft-miao-rtgwg-hpccplus-00.txt A new version of I-D, draft-miao-rtgwg-hpccplus-00.txt has been successfully submitted by Rui Miao and posted to the IETF repository. Name: draft-miao-rtgwg-hpccplus Revision: 00 Title: HPCC++: Enhanced High Precision Congestion Control Document date: 2022-03-07 Group: Individual Submission Pages: 20 URL: https://www.ietf.org/archive/id/draft-miao-rtgwg-hpccplus-00.txt Status: https://datatracker.ietf.org/doc/draft-miao-rtgwg-hpccplus/ Htmlized: https://datatracker.ietf.org/doc/html/draft-miao-rtgwg-hpccplus Abstract: Congestion control (CC) is the key to achieving ultra-low latency, high bandwidth and network stability in high-speed networks. However, the existing high-speed CC schemes have inherent limitations for reaching these goals. In this document, we describe HPCC++ (High Precision Congestion Control), a new high-speed CC mechanism which achieves the three goals simultaneously. HPCC++ leverages inband telemetry to obtain precise link load information and controls traffic precisely. By addressing challenges such as delayed signaling during congestion and overreaction to the congestion signaling using inband and granular telemetry, HPCC++ can quickly converge to utilize all the available bandwidth while avoiding congestion, and can maintain near-zero in- network queues for ultra-low latency. HPCC++ is also fair and easy to deploy in hardware, implementable with commodity NICs and switches. The IETF Secretariat
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