4 Oct
2018
4 Oct
'18
11:16 a.m.
On Oct 4, 2018, at 1:43 PM, Warner Losh <imp at
bsdimp.com> wrote:
On Thu, Oct 4, 2018 at 11:39 AM Paul Koning via cctalk <cctalk at classiccmp.org>
wrote:
I had to look up SQE. http://www.ethermanage.com/ethernet/sqe/sqe.html It's
802-speak for the same signal.
That page says you have to turn it off for the transceiver connected to an 802.3 repeater,
but it should be on in all other cases. Sounds like the 802.3 people got the transceiver
design wrong and that rule is a workaround. There certainly is no similar rule in the
Ethernet spec, and repeaters are definitely part of that spec.
paul
On Oct 4, 2018, at 1:30 PM, Grant Taylor via
cctalk <cctalk at classiccmp.org> wrote:
...
That makes me wonder about the "heartbeat" switch that I see on older AUI
transceivers.
Yes, I think that's the collision test. So in the OFF position you have a V1
compatible transceiver, ON is needed for V2.
Is that the same as SQE? I always had to turn that bad-boy off or risk collision storms
:(
Warenr