Re: [Idr] I-D Action: draft-ietf-idr-performance-routing-02.txt

" 徐小虎(义先) " <xiaohu.xxh@alibaba-inc.com> Wed, 16 October 2019 12:13 UTC

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Date: Wed, 16 Oct 2019 20:12:53 +0800
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Subject: Re: [Idr] =?utf-8?q?I-D_Action=3A_draft-ietf-idr-performance-routing?= =?utf-8?q?-02=2Etxt?=
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In addition, the performance routing paradigm could actually be deployed in the EPE scenario as well where both capacity-aware TE capability and performance-aware TE capability are desired. More specifically, since there are two routing tables, one contains vanilla routes which are used for capacity-aware routing purpose and the other contains performance routes which are used for performance-aware routing purpose, which are manipulated by the EPE controller via the BGP-LU and the performance routing SAFIs respectively, traffic with different QoS class but designated for the same destination could be forwarded to different ISP peers according to different routing tables. 

In this way, it allows cloud providers to provide differentiated Internet connectivity service to their tenants. For example, high-priority traffic originated from gold tenants could be forwarded according to the performance routing table while the remaining traffic would be forwarded according to the vanilla routing table, as a result, the former is forwarded along a low-latency path while the latter is forwarded along a high-latency path. 

Best regards,
Xiaohu


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From:徐小虎(义先) <xiaohu.xxh@alibaba-inc.com>;
Send Time:2019年10月15日(星期二) 17:57
To:SPRING WG List <spring@ietf.org>;
Cc:idr <idr@ietf.org>;
Subject:Re: [Idr] I-D Action: draft-ietf-idr-performance-routing-02.txt


Hi all,

I just recently realized that the performance routing mechanism as described in this draft could facilitate the deployment of segment routing across multiple ASes of an administrative entity where low-latency SR paths across ASes are needed for carrying latency-sensitive and high-priority traffic. In this way, there is no need to resort to centralized TE controllers for calculating low-latency paths across ASes. 

Any comments and suggestions are welcome.

Best regards,
Xiaohu





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Subject:[Idr] I-D Action: draft-ietf-idr-performance-routing-02.txt


A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Inter-Domain Routing WG of the IETF.

        Title           : Performance-based BGP Routing Mechanism
        Authors         : Xiaohu Xu
                          Shraddha Hegde
                          Ketan Talaulikar
                          Mohamed Boucadair
                          Christian Jacquenet
 Filename        : draft-ietf-idr-performance-routing-02.txt
 Pages           : 10
 Date            : 2019-10-13

Abstract:
   The current BGP specification doesn't use network performance metrics
   (e.g., network latency) in the route selection decision process.
   This document describes a performance-based BGP routing mechanism in
   which network latency metric is taken as one of the route selection
   criteria.  This routing mechanism is useful for those server
   providers with global reach to deliver low-latency network
   connectivity services to their customers.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-performance-routing/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-idr-performance-routing-02
https://datatracker.ietf.org/doc/html/draft-ietf-idr-performance-routing-02

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-performance-routing-02


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

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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