[Info-vax] terminal servers etc

[VAXman- at SendSpamHere.ORG]

In article <kc9ql6$ljp$1 at online.de>, helbig at astro.multiCLOTHESvax.de (Phillip Helbig---undress to reply) writes:
>I would like to connect some real terminals far away from my cluster to 
>a LAT service on the cluster so that I can hit RETURN on the terminal 
>and one of the nodes will offer the login prompt.  If I have the basic 
>idea correct, I can connect the terminals to a terminal server via a 
>serial connection then connect the terminal server to the LAN where it 
>can talk to the cluster via TCPIP or LAT.
>
>I've used a similar setup, years ago, but have no idea how it was set 
>up.
>
>Speed is not an issue since I can't type much faster than 100 b/s.  :-)
>
>Some questions (note: I'm not looking for actual instructions; I'll look 
>them up if I decide to go this route):
>
>How difficult is this to set up on the VMS side?

Simple!

See: SYS$STARTUP:LAT$SYSTARTUP.COM


>Is LAT preferable (easier, better) than TCPIP?
>
>I have stuff like DECserver 90TL, DECserver 90M.  Will this do what I 
>want?  (I also have some DECserver 200MC and 250 but I assume the 90s 
>are the better choice here.)

The 90s are what I use here.  I'd keep your 200MC if, for some reason,
you require full modem control someday.



>The DECrepeater 90T is functionally equivalent to a 10 Mb/s hub (but
>amplifies the signal, hence a repeater and not a hub), right?
>
>T is TCPIP, L is LAT, TL is both, M is both and more?  Since a hub or 
>repeater is essentially a dumb device, why can't it handle all protocols 
>as long as the wiring is correct?

Yes!



>Is the only network connection on the server the BNC coax connector?  If 
>so, I'll probably need one of the repeaters in order to connect this to 
>a twisted-pair network.  I have both standalone server and repeater as 
>well as some which connect to a backplane (and have the backplane as 
>well).  Will the backplane provide a network connection between server 
>and repeater?  (If so, I might be able to avoid BNC.)

If you have a DEChub90, plug your DECrepeater90(s) and DECserver90**(s)
into it, power it up and you can forego the thin-wire cheapernet.

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VAXman- A Bored Certified VMS Kernel Mode Hacker    VAXman(at)TMESIS(dot)ORG

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