19 Dec
2024
19 Dec
'24
9:41 a.m.
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
19 Dec
19 Dec
5:02 p.m.
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
5:15 p.m.
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
7:41 p.m.
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
>>
>
9:38 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
>>
>
20 Dec
20 Dec
2:15 p.m.
Collision detect check failure is a warning, not a send failure -- the message is
misleading There are several possible causes.
1. The transceiver predates SQE check, it doesn't implement the signal. If so, turn
off the message, you're fine.
2. The transceiver can do SQE but it's turned off. Turn it on.
3. The collision signal circuitry in the transceiver is broken. Or the collision wires in
the transceiver cable are. If so, on a half-duplex link with several other stations on it
all busy talking, you might see lost packets, and the other stations would likely be
reporting "late collision" errors. If so, replace the cable or transceiver.
I'm not sure if a bad coax segment (not properly terminated or damaged cable) can do
this, or if it would only cause false collision signals which is a different message.
BTW, in all these cases you're probably communicating just fine. For 1 and 2, no one
else would be reporting any errors. Also: if your collision counts are non-zero it's
not #3.
paul
On Dec 19, 2024, at 9:41 AM, Peter Ekstrom via cctalk
<cctalk(a)classiccmp.org> 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
194
days inactive
195
days old
5 comments
3 participants
participants (3)
-
Paul Koning -
Peter Ekstrom -
Warner Losh