Date: Thu, 5 Dec 1996 04:05:22 +0200 (SAT) From: Robert Nordier <rnordier@iafrica.com> To: SimsS@IBM.Net Cc: questions@FreeBSD.ORG Subject: Re: HELP: IIJ-PPP demand-dial with dynamic IP on both ends Message-ID: <199612050205.EAA00419@eac.iafrica.com> In-Reply-To: <199612042312.XAA11982@smtp-gw01.ny.us.ibm.net> from Steve Sims at "Dec 4, 96 06:11:49 pm"
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Steve Sims wrote:
> OK,I relent! I've been mucking with the -auto feature of iij-ppp for days
> and can't get it to work reliably. I've come to the point where interactive
> mode works flawlessly every time, but can't get the blasted thing to reliably
> demand dial.
>
> I've looked at the ppp.conf.samples, .filter.samples, .linkup.samples until
> I'm blue in the face.
>
> I've even had it sorta-work a couple of times -- the *FIRST* time a
> demand-dial situation occurs -- but it won't work reliably on subsequent
> demand-dials.
>
> Also, it seems to *NEVER* work if I:
> # telnet localhost 3000
> PPP ON localhost> quit all
> #
>
> and subsequently restart ppp -auto [system] from the command line.
>
> The biggest problem (I think) is that the addresses on both ends (ISP and
> local) are dynamic - I can't figure out how to set up the ifaddr stuff to
> accommodate this scenario. All of the references - source, manpages,
> handbook and FAQ - seem to assume that I'll know, in advance, what the remote
> side address will be.
>
> Does anyone have a working ppp.conf and / or ppp.linkup file that works in
> -auto mode with both ends of the line having dynamic addresses?
The following entry in `/etc/ppp/ppp.conf.iij' is probably pretty close
to what you need:
#
# Here, we assume that IIJ server has 192.244.177.2 as their address.
# This assumption may not be correct, but we'll fix it later.
# Also, take a look at ppp.linkup.
#
# % ppp -auto iij-demand
#
# Use dummy ping to generate a call to IIJ.
#
# % ping 192.244.177.2
#
iij-demand:
set debug lcp
set phone 0355118852
set login "TIMEOUT 5 login:-\\r-login: MyUserName word: MyPassword PPP"
set ifaddr 0 192.244.177.2/20
add 0 0 192.244.177.2
First, delete the `add' line. The file `/etc/ppp/ppp.linkup.sample'
contains (better) `add' logic, anyway, so just rename that file to
`/etc/ppp/ppp.linkup'.
You're not sure of either address, so you can indicate that by a '/0'
after each address:
set ifaddr 160.124.92.116/0 192.244.177.2/0
It shouldn't matter what addresses you use in `set ifaddr'. You
should even be able to use the actual line above, because it says
(in effect) "I really don't care whether you use these addresses or
not".
I found that using 0 (as in the example) for the local address
didn't work well, and use a static address assigned to me for
connecting to another ISP (the same `ifaddr' works for both). The
local address won't be acceptable to this ISP, of course, but the
'/0' gives the go-ahead to change it.
This setup requires a dummy ping (as mentioned in the comments) to
kick start it, but only on the first occasion following a reboot.
Thereafter it will dial out automatically as required.
--
Robert Nordier
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