Re: [Dyncast] New Version Notification fordraft-liu-dyncast-ps-usecases-00.txt

liupengyjy <> Tue, 02 February 2021 02:15 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 75D693A167C for <>; Mon, 1 Feb 2021 18:15:30 -0800 (PST)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -0.684
X-Spam-Status: No, score=-0.684 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, BIGNUM_EMAILS=1.214, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=no autolearn_force=no
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id 7r3QcAsWqmU3 for <>; Mon, 1 Feb 2021 18:15:27 -0800 (PST)
Received: from ( []) by (Postfix) with ESMTP id D0F5E3A167A for <>; Mon, 1 Feb 2021 18:15:26 -0800 (PST)
Received: from (unknown[]) by rmmx-syy-dmz-app08-12008 (RichMail) with SMTP id 2ee86018b59c2d5-8a381; Tue, 02 Feb 2021 10:14:52 +0800 (CST)
X-RM-TRANSID: 2ee86018b59c2d5-8a381
X-RM-TagInfo: emlType=0
X-RM-SPAM-FLAG: 00000000
Received: from [] (unknown[]) by rmsmtp-syy-appsvr09-12009 (RichMail) with SMTP id 2ee96018b59a105-bbd37; Tue, 02 Feb 2021 10:14:52 +0800 (CST)
X-RM-TRANSID: 2ee96018b59a105-bbd37
User-Agent: 139mail Mail for Android
In-Reply-To: <>
References: <> <>
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="----C3Z70I8ZUGY3X2894587TB17OAZN20"
From: liupengyjy <>
Date: Tue, 02 Feb 2021 10:14:48 +0800
Message-ID: <>
Archived-At: <>
Subject: Re: [Dyncast] New Version Notification fordraft-liu-dyncast-ps-usecases-00.txt
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Tue, 02 Feb 2021 02:15:30 -0000

Hi Joel, 
The draft analyzes the gap of existing methods, and does not rule out other methods can be implemented, but the efficiency needs to be verified.  Moreover, in the edge computing scenario, many native services are deployed by operators, so we think that the method of using anycast is feasible.

Best, Peng Liu

发件人: "JoelM.Halpern" <>

发送日期: Mon Feb 01 22:24:08 GMT+08:00 2021

收件人: dyncast <>

主题: Re: [Dyncast] Fw: New Version Notification fordraft-liu-dyncast-ps-usecases-00.txt

This problem statement draft seems to assume a particular approach to 
the solution.

It is not at all obvious, absent the assumptions, that one wants to put 
the information into routing at all.  There are multiple approaches that 
address the problem that do not require the use of anycast addressing or 
injecting the application placement dynamics into the underlying routing 


On 2/1/2021 5:22 AM, 刘鹏 wrote:
Dear all,

Welcome all to the mailing list for the problem of and work on dynamic 
anycast, enabling the consideration of compute and network metrics in 
the decision to route a flow of packets among more than one service 
instance. We have now uploaded the use case and problem statement draft, 
outlining a few pertinent use cases for this work, as well as 
shortcomings of existing solutions and requirements for a desirable 
solution. It is the intention to use this draft to frame the discussion 
towards a possible solution proposal. To this end, we also plan on 
releasing a first version of an architecture draft soon.

In the meantime, any comments and discussion on the use case and problem 
statement draft is highly welcome!


Peng Liu

Peng Liu | 刘鹏
China Mobile | 移动研究院
mobile phone:13810146105
email: _ liupengyjy@chinamobile.com_

   发件人: internet-drafts <>
   时间: 2021/02/01(星期一)18:15
   收件人: Dirk Trossen <>;Peng Liu
   <>;Peter Willis
   主题: New Version Notification for draft-liu-dyncast-ps-usecases-00.txt

A new version of I-D, draft-liu-dyncast-ps-usecases-00.txt
has been successfully submitted by Dirk Trossen and posted to the
IETF repository.

Name: draft-liu-dyncast-ps-usecases
Revision: 00
Title: Dynamic-Anycast (Dyncast) Use Cases and Problem Statement
Document date: 2021-02-01
Group: Individual Submission
Pages: 14

Service providers are exploring the edge computing to achieve better
response time, control over data and carbon energy saving by moving
the computing services towards the edge of the network in 5G MEC
(Multi-access Edge Computing) scenarios, virtualized central office,
and others. Providing services by sharing computing resources from
multiple edges is an emerging concept that is becoming more useful
for computationally intensive tasks. Ideally, services should be
computationally balanced using service-specific metrics instead of
simply dispatching the service in a static way, e.g., to the
geographically closest edge since this may cause unbalanced usage of
computing resources at edges which further degrades user experience
and system utilization. This draft provides an overview of scenarios
and problems associated with realizing such scenarios.

The document identifies several key areas which require more
investigations in terms of architecture and protocol to achieve
balanced computing and networking resource utilization among edges
providing the services.

Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at

The IETF Secretariat