Subject: [tsvwg] FW: New Version Notification for draft-yueven-tsvwg-dccm-requirements-00.txt

From: "Roni Even (A)" <[email-masked]>
Date: Wed, 26 Jun 2019 10:47:36 +0000

Hi,
I submitted this drive discussing current state of Data Centers congestion handling and requirements to achieve better congestion management  and packet loss handling
Please review and comment
Roni Even

-----Original Message-----
From: [email-masked] [mailto:[email-masked]] 
Sent: Wednesday, June 26, 2019 1:43 PM
To: Yuxiang (Yolanda); Sunwenhao (Sam); Yuxiang (Yolanda); Roni Even (A); chenfei (AC)
Subject: New Version Notification for draft-yueven-tsvwg-dccm-requirements-00.txt

A new version of I-D, draft-yueven-tsvwg-dccm-requirements-00.txt
has been successfully submitted by Roni Even and posted to the IETF repository.

Name:		draft-yueven-tsvwg-dccm-requirements
Revision:	00
Title:		Data Center Congestion Management requirements
Document date:	2019-06-25
Group:		Individual Submission
Pages:		11
URL:            https://www.ietf.org/internet-drafts/draft-yueven-tsvwg-dccm-requirements-00.txt
Status:         https://datatracker.ietf.org/doc/draft-yueven-tsvwg-dccm-requirements/
Htmlized:       https://tools.ietf.org/html/draft-yueven-tsvwg-dccm-requirements-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-yueven-tsvwg-dccm-requirements

Abstract:
   On IP-routed datacenter networks, RDMA is deployed using RoCEv2
   protocol.  RoCEv2 specification does not define a strong congestion
   management mechanisms and load balancing methods.  RoCEv2 relies on
   the existing Link-Layer Flow-Control IEEE 802.1Qbb(Priority-based
   Flow Control, PFC) to provide a lossless fabric.  RoCEv2 Congestion
   Management(RCM) use ECN(Explicit Congestion Notification, defined in
   RFC3168) to signal the congestion to the destination and use the
   congestion notification to reduce the rate of injection and increase
   the injection rate when the extent of congestion decreases.  More and
   more practice of congestion management for RoCEv2 appear in the
   industry, such as DCQCN(Data Center Quantized Congestion
   Notification).  This document describes the current state of flow
   control and congestion handling in the DC using RoCEv2 and provides
   requirements for new directions for better congestion control.

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