Re: USB-serial adapter suggestions needed

From: Mark Millard <marklmi_at_yahoo.com>
Date: Sun, 14 Jan 2024 01:06:33 UTC 
On Jan 13, 2024, at 13:36, bob prohaska <fbsd@www.zefox.net> wrote:

> On Fri, Jan 12, 2024 at 09:49:47PM -0800, Mark Millard wrote:
>> On Jan 12, 2024, at 17:52, bob prohaska <fbsd@www.zefox.net> wrote:
>>> 
>>> While checking, I logged in as root on the serial consoles of each host.
>>> When I tried to log in to www.zefox.net the response was
>> 
>> This and http://www.zefox.net/~fbsd/tiptrouble/corrupt_mac do not
>> make clear the full chain of connections. In fact the presentation
>> seems inconsistent with other information so various things may
>> have changed.
>> 
>> Some context based on prior (out of date?) information:
>> 
>>  |-50.1.20.30 ns1.zefox.net Pi2 12.3 armv7 ftdi usb-serial----50.1.20.27
>>  |-50.1.20.29 ns2.zefox.net Pi2 12.3 armv7 2303 usb-serial----50.1.20.30
>>  |-50.1.20.27 www.zefox.net Pi2 12.3 armv7 2303 usb-serial----50.1.20.26
>> 
>> Was "pi4 RasPiOS workstation" involved as a starting place? If so, what
>> sequence gets to www.zefox.net from there?
> 
> Yes, the login sequence starts from a shell on pi4 RapiOS 
> workstation, via ssh  to the terminal server where tip is run 
> to access the usb-serial adapter plugged into it.

Okay. There was 1 reference to a login from "gateway.zefox.net"
as a "Last login", as reported by a ns1.zefox.net login sequence.

>> Starting with what you showed via:
>> 
>> http://www.zefox.net/~fbsd/tiptrouble/corrupt_mac
>> 
>> (not knowing how you got there) . . .
>> 
>> QUOTE
>> FreeBSD/arm (www.zefox.net) (ttyu0)
>> 
>> login: root
>> Password:
>> Corrupted MAC on input.
>> ssh_dispatch_run_fatal: Connection to 50.1.20.29 port 22: message authentication code incorrect
>> END QUOTE
>> 
>> 50.1.20.29 is supposedly ns2.zefox.net instead of www.zefox.net
>> or ns1.zefox.net according to http://www.zefox.net/~fbsd/netmap .
> 
> The netmap was wrong. ns1 and ns2 were swapped....8-(  

It now shows:

|-50.1.20.29 ns1.zefox.net Pi2 12.3 armv7 ftdi usb-serial----50.1.20.27
|-50.1.20.30 ns2.zefox.net Pi2 12.3 armv7 2303 usb-serial----50.1.20.29
|-50.1.20.27 www.zefox.net Pi2 12.3 armv7 2303 usb-serial----50.1.20.26

But it later lists the older/inaccurate numbering as well:

 50.1.20.30 ns1.zefox.net Pi2 v1.1
. . .
 50.1.20.29 ns2.zefox.net Pi2 v1.1
. . .
 50.1.20.27 www.zefox.net Pi2 v1.1

>> The bugzilla material eventually needs to be updated with something
>> that can be followed and noting the possible occasional hardware or
>> software corruptions of material that end up going over Ethernet
>> that are now demonstrated to be able to cause the symptoms that
>> you have been seeing on occasion for so long.
> 
> The netmap is corrected, with a description of the login sequence
> used to watch the serial consoles added. I _think_ it's
> a bit clearer than before, if not please say so.

Definitely improved description of the context, thanks.

> A readable (and correct) description of this setup is quite 
> difficult to write.  Thanks very much for close reading and 
> taking the trouble to point out my error(s)!

===
Mark Millard
marklmi at yahoo.com