From:	CSBVAX::MRGATE!RELAY-INFO-VAX@CRVAX.SRI.COM@SMTP  7-SEP-1988 18:33
To:	ARISIA::EVERHART
Subj:	Re: How do you set up multi-host LAT Printers?


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Date:    Wed, 7 Sep 88 05:20:29 PDT
From:     nagy%warner.hepnet@LBL.Gov (Frank J. Nagy, VAX Wizard & Guru)
Message-Id: <880907052029.21a02137@LBL.Gov>
Subject: Re: How do you set up multi-host LAT Printers?
To:       Info-VAX@kl.sri.com
X-ST-Vmsmail-To: INFO_VAX

> Can someone tell me how to set up a printer on a Terminal Server that is dual
> ported, that is connected to two hosts via LAT?  I know a lot of people have
> done such, but the documentation does not indicate how to do such a thing.
     
We have a Printronix-300 connected to a DECServer-200.  Executor print queues
on two nodes of our LAVC drive this printer (yes, I know its dumb, but this
was setup explicitly to test using LAT for a multiple-access printer).
A large CI cluster also accesses this printer directly (and shortly a 2nd
LAVC belonging to my group).

First, the setup of the port in the DECserver-200:
(Example is the TSM command file minus the SET commands)
--------------------------------------------------------

	! WH12W_PRINTRONIX.TXT
	!     TSM command file
	!
	DEFINE PORT 8 AUTOBAUD DISABLE
	DEFINE PORT 8 BREAK DISABLE
	DEFINE PORT 8 DSRLOGOUT ENABLE
	DEFINE PORT 8 ACCESS REMOTE
	DEFINE PORT 8 ALTERNATE SPEED NONE
	DEFINE PORT 8 DEDICATED NONE
	DEFINE PORT 8 INACTIVITY ENABLE
	DEFINE PORT 8 SPEED 9600
	DEFINE PORT 8 TYPE HARDCOPY
	DEFINE PORT 8 PASSWORD DISABLE
	DEFINE PORT 8 MODEM CONTROL DISABLE
	DEFINE PORT 8 NAME PRINTRONIX1
	DEFINE SERVICE WH12W_PRINTRONIX PORT 8
	DEFINE SERVICE WH12W_PRINTRONIX IDENT "RD Controls WH12W Printronix"

Alternatively, here is the SHOW PORT output from the DS200
(ain't TSM coupled with VWS V3.3 cut&paste wonderful?)
----------------------------------------------------------
	Port 8:  

	Character Size:            8           Input Speed:        9600
	Flow Control:            XON           Output Speed:       9600
	Parity:                 None           Modem Control:  Disabled

	Access:               Remote           Local Switch:       None
	Backwards Switch:       None           Name:        PRINTRONIX1
	Break:              Disabled           Session Limit:         8
	Forwards Switch:        None           Type:               Hard

	Preferred Service: None
	
	Authorized Groups:   0
	(Current)  Groups:   0
	
	Enabled Characteristics:
	
	Autoprompt,  Broadcast,  DSRlogout,  Inactivity Logout,
	Input Flow Control,  Loss Notification,  Message Codes,
	Output Flow Control,  Verification

and the output of a SHOW SERVICES LOCAL CHAR command
----------------------------------------------------

	Service: WH12W_PRINTRONIX

	Identification: RD Controls WH12W Printronix

	Ports: 8

	Rating: 255

	Enabled Characteristics:

	Connections, Queuing

That's how the DECServer-200 is setup.  Now to setup the LTAn port
on the host VAX (on each VAX to use the printer) and connect it to
the printer service:
---------------------------------------------------------------------
$ RUN SYS$SYSTEM:LATCP
!
! Set up the applications devices that will support remote printer 
! access.  First create the devices.
!
CREATE PORT LTA1: /NOLOG
!
! Map applications port(s) to a specific port(s) on the terminal 
! server(s).
!
SET PORT LTA1: /NOLOG /APPLICATION /NODE=RDLAT1 /SERVICE=WH12W_PRINTRONIX
EXIT
--------------------------------------------------------------------------
From this point on, one sets up print queues for device LTAn just as one
would for TXcn, for instance.  The only differences are two qualifiers
for the INIT/QUEUE command:

	/PROCESS=LATSYM /RETAIN=ERROR

so that the special print symbiont which can handle queued connections to
the printer service is used AND jobs are retained on errors (such as loss
of the connection to the DECserver).

When we set this up, we used the DECServer-200 Management Guide.  The
most helpful section is Chapter 7 "Configuring Ports".  In particular,
have a look at 7.8 "A Printer Configured for Queued Connection Requests".

= Frank J. Nagy   "VAX Guru & Wizard"
= Fermilab Research Division EED/Controls
= HEPNET: WARNER::NAGY (43198::NAGY) or FNAL::NAGY (43009::NAGY)
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