19 Dec
2024
19 Dec
'24
6:38 p.m.
I have 3 AUIs: two 10BaseT and one 10Base2 (don't have any 10Base2 stuff
anymore though). I tested with both the 10BaseT units and it so happens
they both had SQE turned off. So after flipping the tiny switch to on, they
both work and no more message. I used them with some old Sun Sparc IPC
machines in the past and clearly they didn't care. So I must have turned
them both off back then. I'm glad it was that simple.
On Thu, Dec 19, 2024 at 7:49 PM Paul Koning via cctalk <
cctalk(a)classiccmp.org> wrote:
Collision check test is, if I remember right, a
feature that wasn't in the
Ethernet spec but got added by IEEE 802.3. So old transceivers may not
have it. In spite of what the event says, it's not a send failure because
the SQE test signal occurs right after the packet is finished. If you have
such a transceiver, you may want to look into disabling the check. Failing
that, turn off the event.
If the transceiver does have SQE, then its failure might be due to a cable
problem. Check the Ethernet cable. It needs to be terminated at both ends
and nowhere else :-) and it needs to be grounded at exactly one point.
paul
On Dec 19, 2024, at 5:15 PM, Warner Losh via
cctalk <
cctalk(a)classiccmp.org> wrote:
It's always SQE with thicknet. Too much or too little.
On Thu, Dec 19, 2024, 3:03 PM Peter Ekstrom via cctalk <
cctalk(a)classiccmp.org> wrote:
> I just learned what SQE does. I had to enable it on my AUI and it seems
the
> collision detection is happy now.
>
> -Peter
>
> On Thu, Dec 19, 2024 at 9:41 AM Peter Ekstrom <epekstrom(a)gmail.com>
wrote:
>
>> Hi all,
>>
>> This may be a dumb question but I am a bit stumped. I can't seem to
find
>> any helpful info in the manuals. I have a
DEQNA installed in my 11/23+
> and
>> I have run a NETGEN using the QNA driver. When NETINS runs I start
seeing
>> messages like these on the console:
>>
>> Event type 5.14, Send failed
>> Occurred 19-DEC-24 09:30:11 on node 10.1 (TYCHO)
>> Line QNA-0
>> Failure reason = Collision detect check failed
>>
>> So obviously the link isn't working, but I find nothing helpful about
>> where to start looking regarding the failed collision detect check. The
>> line is on:
>>
>> NCP>show line qna-0 status
>>
>> Line status as of 19-DEC-24 09:36:31
>>
>> Line State
>>
>> QNA-0 On
>>
>> I have an Ethernet transceiver (I have 2 and have tried both, they
worked
>> last time I used them) connected to the
DEQNA harness, and a cable
>> connecting it to an old 10Base-T hub. I know that hub works because I
> have
>> a couple of other systems (OS/2 laptop and an AS/400) connected to it.
>>
>> So does anyone have any ideas of where I can start?
>>
>> Thanks in advance!
>> Peter
>>
>