slattach(8) - NetBSD Manual Pages

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


NAME

     slattach, slip - attach serial lines as network interfaces


SYNOPSIS

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


DESCRIPTION

     slattach is used to assign a tty line to a network interface, and to de-
     fine the network source and destination addresses.  The following
     operands are supported by slattach:

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

     -H            Turn on DTR/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.

     -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.  Support-
                   ed line disciplines are ``slip'' (creates a sl(4) instance)
                   and ``strip'' (creates a strip(4) instance).  If this op-
                   tion 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'.

     In addition, the following flags to ifconfig(8) control various proper-
     ties of a SLIP link:

     link0         Turn on Van Jacobsen header compression.

     -link0        Turn off header compression.

     link1         Don't pass through ICMP packets.

     -link1        Do pass through ICMP packets.

     link2         If a packet with a compressed header is received, automati-
                   cally enable compression of outgoing packets.

     -link2        Don't auto-enable compression.

     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 the specified interface does not exit, the requested
     address is unknown, the user is not privileged and tried to alter an in-
     terface's configuration.


SEE ALSO

     netstat(1), netintro(4), sl(4), strip(4), ifconfig(8), rc(8)


HISTORY

     The slattach command appeared in 4.3BSD.

4.3 Berkeley Distribution        April 1, 1994                               2