Subject: Re: Regarding 802.3u NWAY autonegotiation, hubs, media, etc.
To: Charles M. Hannum <firstname.lastname@example.org>
From: Jason Thorpe <email@example.com>
Date: 12/09/1999 14:55:24
On 09 Dec 1999 17:18:41 -0500
firstname.lastname@example.org (Charles M. Hannum) wrote:
> It also seems like way too much magic.
I agree. Yay, IEEE.
> Perhaps the right thing to do is your point #1, but only long enough
> to send a FLP to inform the other side (or for 5 seconds?), and then
> switch to Parallel Detection.
I thought about that... but the problem is that when you clear BMCR_AUTOEN,
and the link goes down spuriously, the other side sees you're not capable
of NWAY. So it falls back to Parallel Detection.
Now if you hardwired 100baseTX-FDX, you're screwed, because Parallel
Detection is defined to disallow detection of full-duplex.
-- Jason R. Thorpe <email@example.com>