26 Oct
2025
26 Oct
'25
4:56 a.m.
On 10/25/25 23:46, Tony Nicholson wrote:
Hi folks, has anyone here used a Lantronix
ETS-series or similar
terminal server for LAT connections to RSX? We're having a strange
I have a Lantronix ETS8P running software version V3.6/5(010208)
that I use to bridge various RS-232 serial devices to LAT services
on OpenVMS, RSX-11, RSTS/E etc.
I don't see any issues to any of my machines (and I have a few older images
that can be MOP downline loaded to the Lantronix if you need them for
V3.5/9, V3.6/1, V3.6/4)
Hi Tony. We use them much as you do, with local services to system
consoles as well as for terminals and printers. They've been working
very well for us since we migrated to them recently from a set of
DECservers.
I typed this up for Johnny a couple of hours ago so I'll just paste
it here:
We have three Lantronix ETS-series terminal servers on the network;
we just replaced four DECserver-300s with them. They are performing
great and give us some additional functionality that we wanted.
But we have hit one snag that is just...weird. Either of the two
RSX-11M-PLUS machines that we've tried (an 11/70 and an 11/53) both do
this. From one specific terminal server, when we connect to the LAT
service, it gets a connection (and LCP shows it as connected) but there
is no login prompt. It is completely unresponsive.
The other two terminal servers work just fine, and other machines
(several VAXen, two Linux machines, etc) can connect to that LAT service
just fine, meaning we get the ">" immediately and can log in.
The configurations of the terminal servers are identical. The only
difference is that the one with the problem is a 32-port unit and the
two that work are 16-port units.
Connections to any other service from the affected terminal server
work fine, including connections to RSTS/E on the very same PDP-11s.
(most of our machines are set up with multiple system disks for
different OSs)
The next time we work on this, possibly next week, we're going to do
some packet captures.
Do you have any thoughts on this?
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA