Hi, Danny:
发件人: Danny Alex Lachos Perez [mailto:[email protected]]
发送时间: 2018年10月23日 10:04
收件人: Qin Wu
抄送: IETF ALTO
主题: Re: [alto] Status update //RE: I-D Action:
draft-ietf-alto-performance-metrics-05.txt
Hello, Qin and all the authors.
I have performed a review of this draft (-05).
My comments are in the attached file (marked with [DANNY]). Most of them are
about format issues, consistency, and clarity. However, I have a technical
comment:
[Qin]: Thanks, I have incorporated your comments in the update.
Regarding hop count cost metric (section 6), the metric name is very generic.
Considering the "metric description", you basically refer to router hops. What
about other types of hop count, for example, AS-hops?. Based on your
description, I think that this metric could have a more specific name ("router
hop count", for giving an example)
[Qin]: This has been brought up by one of our coauthors, the intention is to
define hop count as generic metric. But I am happy to make it specific if
there is agreement to do so.
PLUS:
Each cost metric (OWDelay, RTT, PDV, Hop Count, Packet Loss, and Throughput) is
considered a section. However, I think you can consider them as subsections of
a section, similar to how you did with Traffic Engineering Performance Cost
Metrics (section 9).
[Qin]: Make sense, fixed.
Best regards,
Danny Lachos
On Sun, Oct 21, 2018 at 10:15 PM Qin Wu
<[email protected]<mailto:[email protected]>> wrote:
Hi,
The main changes in v-(05) are to remove duplicated text for PDV cost metric
and add throughput cost metric to align with cost calendar draft.
The diff is:
https://www.ietf.org/rfcdiff?url2=draft-ietf-alto-performance-metrics-05
-Qin
-----邮件原件-----
发件人: alto [mailto:[email protected]<mailto:[email protected]>] 代表
[email protected]<mailto:[email protected]>
发送时间: 2018年10月22日 9:12
收件人: [email protected]<mailto:[email protected]>
抄送: [email protected]<mailto:[email protected]>
主题: [alto] I-D Action: draft-ietf-alto-performance-metrics-05.txt
A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Application-Layer Traffic Optimization WG of
the IETF.
Title : ALTO Performance Cost Metrics
Authors : Qin Wu
Y. Richard Yang
Young Lee
Dhruv Dhody
Sabine Randriamasy
Filename : draft-ietf-alto-performance-metrics-05.txt
Pages : 26
Date : 2018-10-21
Abstract:
Cost Metric is a basic concept in Application-Layer Traffic
Optimization (ALTO). It is used in both the Cost Map Service and the
Endpoint Cost Service.
Different applications may benefit from different Cost Metrics. For
example, a Resource Consumer may prefer Resource Providers that offer
a low delay delivery to the Resource Consumer. However the base ALTO
protocol [ALTO] has documented only one single cost metric, i.e., the
generic "routingcost" metric (Sec. 14.2 of ALTO base specification
[ALTO]).
This document, proposes a set of Cost Metrics, derived and aggregated
from routing protocols with different granularity and scope, such as
BGP-LS,OSPF-TE and ISIS-TE, or from end-to-end traffic management
tools. It currently documents Network Performance Cost Metrics
reporting on network delay, jitter, packet loss, hop count, and
bandwidth. These metrics may be exposed by an ALTO Server to allow
applications to determine "where" to connect based on network
performance criteria. Additional Cost Metrics involving ISP specific
considerations or other network technologies may be documented in
further versions of this draft.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-alto-performance-metrics/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-alto-performance-metrics-05
https://datatracker.ietf.org/doc/html/draft-ietf-alto-performance-metrics-05
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-alto-performance-metrics-05
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<http://tools.ietf.org>.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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