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SLIP/PPP questions

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Old 09-30-2010
SLIP/PPP questions
Hello all..

I need to script SLIP dial-up connections and wanted ask others about the following;

- does pppd support SLIP (noticed some releases do and some don't)
- if pppd doesn't support SLIP can bash variables be passed to a dip script (e.g. phone-number, ip-address)
- or is another means of establishing a SLIP connection

I have PPP dial-up connections working and was curious if anyone has ran into the following problem;

- each PPP connection established has a unique unit id (e.g. ppp0, ppp1 - basically the device numbers/indexes, in my case, are unique)
- from time to time chat timeout errors occur when initiating more than one PPP connection simultaneously (e.g. ppp0 on tty00, ppp1 on tty01, ppp2 on tty02)

Please advise if additional information is needed and I am using Ubuntu.

Thanks in advance.
Last edited by LAVco; 09-30-2010 at 09:03 PM..
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LEARN ABOUT DEBIAN

slattach

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 hang up.

       [-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>

								    10 Oct 2006 						       SLATTACH(8)