slattach(8) [netbsd man page]

SLATTACH(8)						    BSD System Manager's Manual 					       SLATTACH(8)

NAME

     slattach -- attach serial lines as network interfaces

SYNOPSIS

     slattach [-Hhlmn] [-s baudrate] [-t ldisc] ttyname

DESCRIPTION

     slattach is used to assign a tty line to a network interface which uses asynchronous serial lines.

     Currently the slattach command is used to attach sl(4) or strip(4) interfaces.  These interfaces have to be created using the ifconfig(8)
     create subcommand before the slattach command.  The network source and destination addresses and other interface parameters are configured
     via ifconfig(8).

     The following operands are supported by slattach:

     -H 	   Turn on DTR/CTS flow control.  By default, no flow control is done.

     -h 	   Turn on RTS/CTS flow control.  By default, no flow control is done.

     -l 	   Turn on the CLOCAL flag, making it possible to run SLIP on a cable without modem control signals (e.g. DTR, DSR, DCD).

     -m 	   Maintain modem control signals after closing the line.  Specifically, this disables HUPCL.

     -n 	   Don't detach from invoking tty.

     -s baudrate   Specifies the speed of the connection.  If not specified, the default of 9600 is used.

     -t ldisc	   Specifies the line discipline to use for the tty.  Supported line disciplines are ``slip'' (creates a sl(4) instance) and
		   ``strip'' (creates a strip(4) instance).  If this option is not specified, the default is ``slip''.

     ttyname	   Specifies the name of the tty device.  ttyname should be a string of the form 'ttyXX', or '/dev/ttyXX'.

     Only the super-user may attach a network interface.

     To detach the interface, use ``ifconfig interface-name down'' after killing off the slattach process.  Interface-name is the name that is
     shown by netstat(1).

EXAMPLES

	   slattach ttyh8
	   slattach -s 4800 /dev/tty01

DIAGNOSTICS

     Messages indicating that the specified interface is not configured or created, the requested address is unknown, or that the user is not
     privileged but tried to alter an interface's configuration.

SEE ALSO

     netstat(1), daemon(3), netintro(4), sl(4), strip(4), ifconfig(8), rc(8), sliplogin(8), slstats(8)

HISTORY

     The slattach command appeared in 4.3BSD.

BUGS

     There is no way to specify the interface name (sl%d etc.) to be attached by the slattach command.	There is no way to see which interface is
     assigned to the specified tty by the slattach command, either.

     It would be better if the network interfaces were created by the slattach command rather than by using the ifconfig(8) create subcommand
     before the slattach command.

BSD
								   July 8, 2006 							       BSD

SLATTACH(8)															       SLATTACH(8)

NAME

       slattach - attach a network interface to a serial line

SYNOPSIS

       slattach [-dehlLmnqv] [-c command] [-p proto] [-s speed] [tty]

DESCRIPTION

       Slattach  is  a	tiny  little  program  that can be used to put a normal terminal ("serial") line into one of several "network" modes, thus
       allowing you to use it for point-to-point links to other computers.

OPTIONS

       [-c command]
	      Execute command when the line is hung up. This can be used to run scripts or re-establish connections when a link goes down.

       [-d]   Enable debugging output.	Useful when determining why a given setup doesn't work.

       [-h]   Exit when the carrier is lost. This works on both /dev/tty and /dev/cua devices by directly monitoring the carrier status  every	15
	      seconds.	[-v] Enable verbose output.  Useful in shell scripts.

       [-q]   Operate in quiet mode - no messages at all.

       [-l]   Create an UUCP-style lockfile for the device in /var/lock.

       [-n]   Equivalent to the "mesg n" command.

       [-m]   Do not initialize the line into 8 bits raw mode.

       [-e]   Exit right after initializing device, instead of waiting for the line to hangup.

       [-L]   Enable 3 wire operation. The terminal is moved into CLOCAL mode, carrier watching is disabled.

       [-p proto]
	      Set  a specific kind of protocol to use on the line.  The default is set to cslip , i.e. compressed SLIP.  Other possible values are
	      slip (normal SLIP), adaptive (adaptive CSLIP/SLIP), ppp (Point-to-Point Protocol) and kiss (a protocol used for  communicating  with
	      AX.25 packet radio terminal node controllers).  The special argument tty can be used to put the device back into normal serial oper-
	      ation.  Using 'ppp' mode is not normally useful as ppp requires an additional ppp daemon pppd to be active on  the  line.  For  kiss
	      connections the axattach program should be used.

       [-s speed]
	      Set a specific line speed, other than the default.

       If no arguments are given, the current terminal line (usually: the login device) is used.  Otherwise, an attempt is made to claim the indi-
       cated terminal port, lock it, and open it.

FILES

       /dev/cua* /var/lock/LCK.*

BUGS

       None known.

SEE ALSO

       axattach(8), dip(8) pppd(8), sliplogin(8).

AUTHORS

       Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
       Alan Cox, <Alan.Cox@linux.org>
       Miquel van Smoorenburg, <miquels@drinkel.ow.org>
       George Shearer, <gshearer@one.net>
       Yossi Gottlieb, <yogo@math.tau.ac.il>

								    12 Feb 1994 						       SLATTACH(8)