lat_manual_setup(7)					 Miscellaneous Information Manual				       lat_manual_setup(7)

NAME

       lat_manual_setup - Describes how to manually set up the Local Area Transport (LAT)

DESCRIPTION

       To run LAT on your system, you must configure LAT in your system's kernel (see the Network Administration manual).

       Optionally,  you can customize your LAT setup.  The customization section of the Network Administration manual includes information on gen-
       eral customization, setting up printers, host-initiated connections, the LAT/Telnet gateway, and  creating  your  own  service.	 For  more
       information on customizing LAT, see the Network Administration manual.

Setting Up LAT
       To  set	up LAT on your system manually, you must first configure your kernel for LAT (see the Network Administration manual).  Then log in
       as superuser and perform the following steps: Create the LAT device special files.

	      LAT supports SVR4-style and BSD-style devices.  You should use SVR4-style devices.  See the Network Administration manual  for  more
	      information.   You should use the latsetup utility to create SVR4-style devices to ensure that duplicate minor numbers are not used.
	      You can use the mknod command to create character devices with a major number of 5.  If you create SVR4 devices manually, you should
	      observe  the following rules: Start the SVR4 device numbers at /dev/lat/620.  This avoids overlapping minor numbers from the BSD tty
	      name space.  Make the minor number of the SVR4 device the same as the name.  For example, device /dev/lat/833 should have minor num-
	      ber 833.	The following command would create the SVR4-style LAT device /dev/lat/833:

	      # /usr/sbin/mknod /dev/lat/833 c 5 833 Once you have created the SVR4-style device, check the permissions of the device to make sure
	      they are what you desire.

	      You can create BSD-style devices by running the /dev/MAKEDEV script with the LAT option.	The syntax for the  MAKEDEV  command  with
	      the LAT option is as follows:

	      MAKEDEV latN The N variable can be 0 to 38.

	      The /dev/MAKEDEV script creates one BSD-style LAT device special file for each LAT terminal device. When you run the MAKEDEV script,
	      it creates 16 BSD-style LAT device special files, and creates the LAT control device (/dev/streams/lat), if it has not already  been
	      created.	 The  MAKEDEV  script requires 16 contiguous LAT device special files to be available.	(Specifying lat38 requires only 12
	      contiguous LAT device special files to be available.)

	      For example, the following commands create a total of 32 BSD-style LAT device special files: # cd /dev # MAKEDEV lat0 # MAKEDEV lat1

	      Record the device special file information displayed by the MAKEDEV script.  The special file names vary depending on the number	of
	      terminal devices already configured.

	      The  following  is  sample  output  from the MAKEDEV command: MAKEDEV: special file(s) for lat1: tty16 tty17 tty18 tty19 tty1a tty1b
	      tty1c tty1d tty1e tty1f tty1g tty1h tty1i tty1j tty1k tty1l Edit the /etc/inittab file to include entries for the LAT device special
	      files  you  created.   For example: lat620:34:respawn:/usr/sbin/getty  /dev/lat/620  console vt100 lat621:34:respawn:/usr/sbin/getty
	      lat/621  console vt100 lat630:34:respawn:/usr/sbin/lattelnet lat/630 lattelnet The second field (34) specifies  the  run	levels	at
	      which  the  LAT devices are spawned; in this example, the getty process is spawned at either run level 3 or 4.  The first entry uses
	      an absolute pathname for the device (/dev/lat/620).  The second uses a relative pathname (lat/621).

	      The previous example shows how to add entries to the /etc/inittab file for SVR4 LAT devices.  The following  example  shows  entries
	      for  BSD	LAT  devices:  lat16:34:respawn:/usr/sbin/getty  tty16	console vt100 lat17:34:respawn:/usr/sbin/getty tty17 console vt100
	      lat18:34:respawn:/usr/sbin/lattelnet tty18 lattelnet18 For more information, see the inittab(4) and getty(8) reference  pages.   The
	      Network  Administration manual provides additional information on SVR4 and BSD devices.  Use the following command to spawn the pro-
	      cesses for the LAT device special files that you added to the /etc/inittab file: # /sbin/init q  Create  the  STREAMS  special  file
	      required	by  LAT  by  issuing the following command: # /usr/sbin/strsetup -i Enable LAT automatic startup and shutdown by using the
	      following command: # /usr/sbin/rcmgr set LAT_SETUP 1 When LAT automatic startup and shutdown is enabled, the  /sbin/init.d/lat  file
	      automatically  starts  LAT upon reaching run level 3 and automatically stops LAT when exiting run level 3.  Start LAT by issuing the
	      following command: # /usr/sbin/latcp -s

RELATED INFORMATION

       Commands: llogin(1), netstat(1), getty(8), init(8), latcp(8), latsetup(8), MAKEDEV(8), mknod(8), rcmgr(8), strsetup(8).

       Files: inittab(4).

       Introduction: lat_intro(7).

       Network Administration , System Administration delim off

															       lat_manual_setup(7)