Lennart, thanks for this. One critique. In baseline for the new ‘reflected voltage’ section you have the number 1.3mA instead of a constant and a pointer to a table. I know we work very hard to have all numbers in tables. I would suggest
Ibfd as brought forth in other presentations.
Chad Jones
Tech Lead, Cisco Systems
Chair, IEEE P802.3bt 4PPoE Task Force
Principal, NFPA 70 CMP3
From: Lennart Yseboodt <lennartyseboodt@xxxxxxxxx>
Reply-To: Lennart Yseboodt <lennartyseboodt@xxxxxxxxx>
Date: Wednesday, May 2, 2018 at 10:53 AM
To: 4PPOE Reflector <STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx>
Subject: [802.3_4PPOE] Backfeed - presentation and baseline
(previous attemt seems to have been swallowed by the reflector)
I've updated the slides to explain some of the associated topics that go with backfeed.
Ken - your 2nd proposal is extremely close to very similar text I had prepared earlier - we must be on the right track :)
Attached slides + baseline.
Yair has asked the group to perform the due dilligence on 3P backfeed.
Given how late in the process we have discovered this issue, that seems like sound advice.
Let's keep digging and make sure we get it right!
Based on my current understanding, there are serious negative consequences associated with imposing a 2.8V requirement on PDs in 3-pair condition.
As such, I would propose to restrict the backfeed spec to 2P only, while we continue to check for potential issues.
Kind regards,
Lennart
To unsubscribe from the STDS-802-3-4PPOE list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-4PPOE&A=1
To unsubscribe from the STDS-802-3-4PPOE list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-4PPOE&A=1