[802.3_10SPE] AW: draft contributions for the 10Mbps Single Pair ad hoc

Thread Links	Date Links
Thread Prev	Thread Next	Thread Index	Date Prev	Date Next	Date Index

Hi David,

thanks for your presentations.

Especially the discussion of the reduced frame size is very interesting.

some points/remarks/question:

- I think for (at least) some of the applications the overall transmission delay of the message is as well very important (control applications).

Any additional input on how reduced frame size would influence this would be interesting as well.

- For the control applications as well we have to consider that the overall latency of the network is
bigger than the individual transmission time (number of hops or better number of switches)

- For calculating this overall latency: Can anyone (maybe of the semiconductor suppliers) give an assumption of the time a 10/100/1000Mbps store’n’forward switch would
need for a frame (only the switching from MAC to MAC)? Is this significantly different between the speed grades? Is this different for a cut-through switch?
(Or is the dominant factor the “store” part of the frame (which is nearly equal to the individual transmission time per link) and switching is negligible?)

Regards,

Stefan

PS: unfortunately I am not sure if I can join this evening…

------------------------------------------

Stefan Buntz

Mercedes-Benz Cars Development, Daimler AG

Group Research & Advanced Engineering

Safeguarding Hard & Software

HPC: U059 – Dep.: RD/EEQ

Phone: +49 731 505-2089

Mobil: +49 176 30 90 51 44

Fax: +49 711 305 216 45 95

E-Mail: stefan.buntz@xxxxxxxxxxx

Address for visitors:

Buildung 10

Room 3.2.022

Wilhelm-Runge-Str. 11

D-89081 Ulm

Germany

------------------------------------------

Von: David D. Brandt [mailto:ddbrandt@xxxxxxxxxxxxxxx]
Gesendet: Montag, 22. August 2016 07:05
An: STDS-802-3-10SPE@xxxxxxxxxxxxxxxxx
Betreff: Re: [802.3_10SPE] draft contributions for the 10Mbps Single Pair ad hoc Monday 8/22

George,

Here are the following:

Industrial Automation Bit Error Rate

brandt_082216_10SPE_01_adhoc

Reduced Minimum Frame Size

brandt_082216_10SPE_02_adhoc

I am also enclosing a third submission, updated from the 802.24 version as requested.

Industrial Automation and Emerging Single-pair Ethernet

brandt_082216_10SPE_03_adhoc

Regards,

David D. Brandt
Senior Principal Engineer
Rockwell Automation - Advanced Technology
1201 South Second Street
Milwaukee, WI 53204-2496
414.382.4309

From: George Zimmerman [mailto:george@xxxxxxxxxxxxxxxxxxxx]
Sent: Sunday, August 21, 2016 9:56 PM
To: STDS-802-3-10SPE@xxxxxxxxxxxxxxxxx
Subject: [802.3_10SPE] draft contributions for the 10Mbps Single Pair ad hoc Monday 8/22

The IEEE website administration isn’t set up yet, so for right now, the presentations will have to go via the reflector.

The attached two contributions are offered to help guide and focus our work – one with acting chair’s comments on par, CSDs and the process, and one on draft objectives for tomorrow.

Peter Jones will be chairing our ad hoc, and I believe that we have presentation requests from David Brandt:

Industrial Automation Bit Error Rate

brandt_082216_10SPE_01_adhoc

Reduced Minimum Frame Size

brandt_082216_10SPE_02_adhoc

David – if you can forward these to the reflector, it will make the distribution easier.

See you all tomorrow morning.

-george

George Zimmerman, Ph.D.

President & Principal

CME Consulting, Inc.

Experts in Advanced PHYsical Communications

george@xxxxxxxxxxxxxxxxxxxx