Re: [bmwg] [Technical Errata Reported] RFC8239 (6763)

["MORTON JR., AL" <[e-mail]>]

Thanks for your quick reply, Lucien!
Al


From: Lucien <[e-mail]>
Sent: Tuesday, November 30, 2021 2:29 PM
To: RFC Errata System <[e-mail]>
Cc: Jacob Rapp <[e-mail]>; Warren Kumari <[e-mail]>; [e-mail]; MORTON JR., AL <[e-mail]>; Sarah B <[e-mail]>; [e-mail]; [e-mail]
Subject: Re: [Technical Errata Reported] RFC8239 (6763)

Hello,

This errata is incorrect. The original text is correct.

Lucien

On Tue, Nov 30, 2021 at 6:47 AM RFC Errata System <[e-mail]<mailto:[e-mail]>> wrote:
The following errata report has been submitted for RFC8239,
"Data Center Benchmarking Methodology".

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid6763<https://urldefense.com/v3/__https:/www.rfc-editor.org/errata/eid6763__;!!BhdT!wScd1KMc51KUWqw0VGpG0Koz6W11ctc3VWC0cf5ClMcedcAYPseHP0RwShhp$>

--------------------------------------
Type: Technical
Reported by: Leonard Yu <[e-mail]<mailto:[e-mail]>>

Section: 3.2

Original Text
-------------
Last iteration: Ingress port 1 sending line rate to egress
port 2, ingress port 3 sending line rate to egress port 4, etc.
Ingress port N-1 and port N will oversubscribe, at 1% of line
rate, egress port N-3 and port N-2, respectively. Measure the
buffer size value by multiplying the number of extra frames
sent by the frame size for each egress port.

Corrected Text
--------------
Last iteration: Ingress port 1 sending line rate to egress
port 2, ingress port 3 sending line rate to egress port 4, etc.
Ingress port N-1 and port N will oversubscribe, at 1% of line
rate, egress port N-4 and port N-3, respectively. Measure the
buffer size value by multiplying the number of extra frames
sent by the frame size for each egress port.

Notes
-----
If
#1, 1->2, 3->4, 5->6, 7->8, ... and N-1->2, N->3
#2, 1->2, 3->4, 5->6, 7->8, ... and N-1->4, N->5

Then
#last, 1->2, 3->4, 5->6, 7->8, ... and N-1->N-4, N->N-3

Otherwise, the general equation won't satisfy #1 and #2

Instructions:
-------------
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RFC8239 (draft-ietf-bmwg-dcbench-methodology-18)
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Title               : Data Center Benchmarking Methodology
Publication Date    : August 2017
Author(s)           : L. Avramov, J. Rapp
Category            : INFORMATIONAL
Source              : Benchmarking Methodology
Area                : Operations and Management
Stream              : IETF
Verifying Party     : IESG