26 Oct
2025
26 Oct
'25
6:28 a.m.
On Sun, Oct 26, 2025 at 2:57 PM Dave McGuire <mcguire(a)neurotica.com> wrote:
Do you have any thoughts on this?
Nothing springs to mind at this stage. In my "working life" I managed a
fleet of
DECservers (200/MC, 90, 500), Vista VCP 1000 and Lantronix using TSM - and
had these
operating on a campus LAN and with LAT bridged over slow speed WAN links
(9600bps)
back in the day.
Tony
--
Tony Nicholson <tony.nicholson(a)computer.org
[snip]
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.
My RSX-11M-PLUS configuration for LAT is bog standard (and all my
LAT services are in group 0)
$ lcp show char
LCP Node Characteristics
Node name = /RUSTY/
Node identification = /SIMH PDP-11/93 (RUSTY)/
Service name = /RUSTY/
Service identification = /RSX11M-Plus V4.6/
Group codes 0
Multicast timer = 20 Maximum buffers = 3
Receive timeout = 30 Retransmit timer = 3
Terminals = 4
LAT Version = 5.1 LAT Protocol is active
I don't remember changing the Lantronix settings either
Local_2> sh server char
ETS8P Version V3.6/5(010208) Uptime: 156 Days 04:55
Hardware Addr: 00-80-a3-67-18-8b Name/Nodenum: GECKO/ 0
Ident String: Lantronix Terminal Server (GECKO) Daytime: 11:23:42
LAT Circuit Timer (msec): 80 Password Limit: 3
Inactive Timer (min): 30 Console Port: 1
Queue Limit: 32 Retrans Limit: 25
Keepalive Timer (sec): 20 Session Limit: 4
Multicast Timer (sec): 30 Node/Host Limits: (none)/20
TCP/IP Address: 192.168.42.43 Subnet Mask: 255.255.255.0
Nameserver: 192.168.42.253 Backup Nameserver:192.168.42.252
TCP/IP Gateway: 192.168.42.1 Backup Gateway: 192.168.42.1
Domain Name: LOCALDOMAIN IP Time: Daytime
TCP Keepalives: Enabled
DHCP Server: None Lease Time: 0:00
Prompt: Local_%n%P> Network Buffering: 2048
Groups: 0
Characteristics: Announce Broadcast Lock
Incoming Logins: Telnet (Passwords Required)
Local_2