Subject: Re: How does 10baseT/FDX work?
To: Justin C. Walker <firstname.lastname@example.org>
From: Ignatios Souvatzis <email@example.com>
Date: 09/25/1999 22:30:11
On Sat, Sep 25, 1999 at 01:25:36PM -0700, Justin C. Walker wrote:
> It may work; I don't know exactly what external loopback does in
> most devices (and don't have my usual pack of doc with me). A couple
> of notes:
> - external loopback is normally a diagnostic mode, so I don't know
> if the device would work differently than in "normal mode (does it
> require a loopback connector?); and
Well, it's defined as "sends and receives at concurrently" for this chip,
this should be good enough. There are no special diagnostic commands to use;
just normal send and receive.
> - this definitely won't get you N-way (autonegotiation) support,
> but most (some?) switches are configurable for this feature (finding
> out about it is another trick). However, hubs and switches won't
> default to FDX, so for general use, you're looking at some trouble.
Oh, yes, I'd need to ask our Master Of The Big Switch Downstairs to
> If you're using this in a limited, controlled environment, it may
Well, I'll do some tests after my vacation week.