April 2002
Intermediate to advanced
746 pages
25h 55m
English
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Appendix A. PPP Tools
This appendix is a reference for dip, pppd,
and chat. These tools are used to
create dial-up IP connections for the Point-to-Point Protocol (PPP). dip and
chat are both scripting languages.
Creating a script that initializes the modem, dials the remote server,
logs in, and configures the remote server is the biggest task in
configuring a PPP connection. Chapter 6
provides examples and tutorial information about all three of the programs
covered here. This appendix provides a reference to the programs.
Dial-Up IP
dip is a scripting tool
designed specifically for creating SLIP and PPP
connections.[154]
The syntax of the dip command
is:
dip [options] [scriptfile]
The dip command is invoked with
an option set, a script file specified, or both. When
scriptfile is specified, dip executes the commands contained in the
script file to create a point-to-point connection. Examples of scripts
and dip are shown in Chapter 6. The
options
valid with script files are:
-vRuns
dipin verbose mode. In this mode,dipechoes each line of the script file as it is executed and displays enhanced status messages.-mmtuSets the maximum transmission unit (MTU) to the number of bytes specified by
mtu. The default MTU is 296 bytes.-pprotoSelects the serial line protocol. Possible values for
protoare: SLIP, CSLIP, PPP, or TERM.
The other dip command-line
options are:
-kKills the last
dipprocess you started. You can only kill a process you own, unless of course you’re root.-ldeviceSpecifies ...
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