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


DESCRIPTION

     slattach is used to assign a tty line to a network interface, and to
     define the network source and destination addresses.  The following oper-
     ands 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.  Sup-
                   ported 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'.

     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 that the specified interface does not exist, 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)


HISTORY

     The slattach command appeared in 4.3BSD.

NetBSD 3.1                     September 3, 1999                    NetBSD 3.1