RFC Errata


Errata Search

 
Source of RFC  
Summary Table Full Records

Found 3 records.

Status: Verified (1)

RFC 8239, "Data Center Benchmarking Methodology", August 2017

Source of RFC: bmwg (ops)

Errata ID: 5652
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Nikolai Malykh
Date Reported: 2019-03-12
Verifier Name: Warren Kumari (Ops AD)
Date Verified: 2019-09-06

Section 3.2 says:

      o  Last iteration: Ingress port N-2 sending line rate to egress
         port N-1, while port N is sending a known low amount of
         oversubscription traffic (1% recommended) with the same packet
         size to egress port N.  Measure the buffer size value by
         multiplying the number of extra frames sent by the frame size.

It should say:

      o  Last iteration: Ingress port N-2 sending line rate to egress
         port N-1, while port N is sending a known low amount of
         oversubscription traffic (1% recommended) with the same packet
         size to egress port N-1.  Measure the buffer size value by
         multiplying the number of extra frames sent by the frame size.

Notes:

Incorrect number of the output port for oversubscription traffic.

[WK]: See https://mailarchive.ietf.org/arch/msg/bmwg/_zZOrFmBwGq3dc5Pfb833tmLSGk for additional context.

Status: Reported (2)

RFC 8239, "Data Center Benchmarking Methodology", August 2017

Source of RFC: bmwg (ops)

Errata ID: 6763
Status: Reported
Type: Technical
Publication Format(s) : TEXT

Reported By: Leonard Yu
Date Reported: 2021-11-30

Section 3.2 says:

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.

It should say:

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

Errata ID: 6768
Status: Reported
Type: Technical
Publication Format(s) : TEXT

Reported By: Leonard Yu
Date Reported: 2021-12-01

Section 3.2 says:

3) Measure maximum port pair buffer sizes.

      o  First 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 2 and port 3, respectively.  Measure the
         buffer size value by multiplying the number of extra frames
         sent by the frame size for each egress port.

      o  Second 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 4 and port 5, respectively.  Measure the
         buffer size value by multiplying the number of extra frames
         sent by the frame size for each egress port.

      o  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.

It should say:

3) Measure maximum port pair buffer sizes.

      o  First 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 1 and port 2, respectively.  Measure the
         buffer size value by multiplying the number of extra frames
         sent by the frame size for each egress port.

      o  Second 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 3 and port 4, respectively.  Measure the
         buffer size value by multiplying the number of extra frames
         sent by the frame size for each egress port.

      o  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.

Notes:

The oversubscribed ports are a pair of ingress and egress ports. The oversubscribed ports in the texts describing the first are port 2 & 3, which are incorrect, should be port 1 & 2. The oversubscribed ports in the texts describing the second are port 4 & 5, which are incorrect, should be port 3 & 4.

Report New Errata



Advanced Search