Date: Sun, 29 Mar 1998 21:38:17 -0800 (PST) From: Doug White <dwhite@gdi.uoregon.edu> To: Dan <dan@sns.org> Cc: questions@FreeBSD.ORG Subject: Re: PPP Server Troubleshooting. Message-ID: <Pine.BSF.3.96.980329212907.23543D-100000@gdi.uoregon.edu> In-Reply-To: <3.0.5.32.19980216111428.007aebf0@joshua.sns.org>
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On Mon, 16 Feb 1998, Dan wrote:
> Hello. I am trying to set up automatic kernel-mode PPP serving. I have
> followed the documentation closely, but seem to be having problems. My
> setup consists of a FreeBSD 2.2.5 box connected to router via ethernet. In
> the BSD box I have a 33.6k modem. The IP for the router is 207.219.216.1,
> the BSD box is 207.219.216.200 and for the client I have reserved
> 207.219.216.241. I set things up as follows:
My ASCII-Art-Enhanced translation of the above:
--- World --- [Router] --- Ether- -- [FreeBSD box] -- 33.6 modem ->client
207.219.216.1 207.219.216.200 207.219.216.241
> 1) Rebuilt the kernel with "options GATEWAY" and "options ARP_PROXALL" added
> to the config file.
These options are deprecated. Use `gateway_enable=YES' in /etc/rc.conf
and keyword `proxyarp' in your /etc/ppp/options file.
> 2) Added the following line to my /etc/ttys file:
> ttyd1 "/usr/sbin/pppd -detach 57600" unknown on secure
Think that's ok.
> 3) Created /etc/ppp/config with the following options:
> crtscts #hardware flow-control
> domain sns.org #domain name
> passive #wait for LCP
> modem #modem
> proxyarp # use proxyarp routing
> +pap # force pap
Looks OK.
> 4) Created /etc/ppp/config.ttyd1 that looks like:
> 207.219.216.200:207.219.216.241
This should be /etc/ppp/options.ttyd1.
> Now for the problems: After connecting, DNS did not function, tried
> pinging hosts on local network. I was only able to ping the box with the
> modem in it (207.219.216.200). I could telnet to this box and then use the
> network
> as usual. I changed the gateway_enabled paramater in rc.conf to YES and
> rebooted.
Okay, good, you caught that.
> I dialed back in and name conversion was working well and I could
> ping a variety of off-site hosts. The problem I am experiencing is that
> connections to sites are very slow and unstable. If I run ping from the BSD
> box to the client, I will get times around 100ms but then every 30 seconds
> or so, the time will jump up to 6000 - 18000 ms.
Welcome to dialup connections :) This is serial connections for you.
WIthout more details it's impossible to tell whether the remote or local
side are dropping packets, or (more likely) line noise is causing a
retransmit in the modem. Considering the packet is eventually getting
through, the modem is probably recovering from a dropped packet or
interrupted line. 30s delays sounds like call waiting.
Doug White | University of Oregon
Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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