Date: Wed, 15 May 1996 10:00:05 -0600 From: Gary Aitken <garya@ics.com> To: freebsd-hackers@freebsd.org Subject: user ppp with dedicated line Message-ID: <3199FF85.21E7@ics.com>
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I mistakenly posted this to ports; my apologies to those
who have already seen this.
I'm using user ppp on a dedicated 56K line, successfully but
probably not correctly :-(
Under freebsd version 2.1
Some questions:
1. What is the difference between direct and dedicated modes?
I'm using a dedicated 56K line; is "direct" a hardwired link
(e.g. port to port), and "dedicated" a dedicated telco link?
2. In order to get ppp to work on my dedicated line, I needed
to make the following mods to force packet mode:
*** /cdrom/usr/src/usr.sbin/ppp/main.c Thu Oct 5 14:24:42 1995
--- main_new.c Wed May 1 07:46:56 1996
***************
*** 599,604 ****
--- 599,610 ----
} else if (mode & MODE_DEDICATED) {
if (!modem)
modem = OpenModem(mode);
+ /*
+ * garya@dreamchaser.org
+ * Force packet mode as for a direct connection
+ */
+ PacketMode();
}
3. I'm having trouble getting ppp.linkup to be read when used with a
dedicated line. It appears to be totally ignored when ppp is
started as follows, with the above mods:
ppp -dedicated myline
The only way I could get a default route added for my dedicated
line was to start it in /etc/start_if.tun0 as follows:
ppp -dedicated myline
sleep 10
route add default 199.2.139.16
The sleep is ugly and theoretically unreliable;
but since ppp.linkup wasn't getting read or properly executed,
I needed the sleep to wait for the network to come up and the
routing table to get established.
What's the *right* way to do this?
4. I tried putting some logprintf debug code in SelectSystem,
to check to see if ppp.linkup was even being read;
but doing so caused a core dump. Can someone explain why, and
give me a hint as to how to debug this?
5. Invalid lines in ppp.linkup are apparently ignored,
or executed with the output directed to /dev/null.
(At least nothing shows up in ppp.log)
How do I tell if it is reading ppp.linkup?
I've tried ppp.linkup with each of the following,
but I suspect the problem is that the whole thing
isn't being read:
myline:
add 0 0 HISADDR
add 207.40.47.18 0 HISADDR
add 0 0 199.2.139.16
add 207.40.47.18 0 199.2.139.16
add default 0 199.2.139.16
6. When running in dedicated (or direct, I think) mode,
attempting to connect via a telnet to port 3000 appears
to work, but typing commands produces no output and you
have to kill the telnet session to recover. Is this a
known problem? Or, as usual, I'm screwing something up? ...
--
Gary Aitken garya@ics.com (business)
garya@dreamchaser.org (personal)
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