Re: PPP over standard serial port

From	Moe Trin <ibuprofin@painkiller.example.tld.invalid>
Newsgroups	comp.protocols.ppp
Subject	Re: PPP over standard serial port
Date	2017-11-20 21:15 +0000
Organization	Area 51 Air and Spacecraft Fueling Company
Message-ID	<slrnp16hes.bca.ibuprofin@juno.phx.az.us> (permalink)
References	<8a93c397-32b4-4aef-9b05-5f6c546abbdc@h38g2000pro.googlegroups.com> <slrnj01t97.4en.ibuprofin@compton.phx.az.us> <fa1ebc1a-2d3e-451a-b474-2a2107ac07e0@googlegroups.com>

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On Sun, 19 Nov 2017, in the Usenet newsgroup comp.protocols.ppp, in article
<fa1ebc1a-2d3e-451a-b474-2a2107ac07e0@googlegroups.com>,
xieblueone@gmail.com wrote:

NOTE: Posting from groups.google.com (or some web-forums) dramatically
reduces the chance of your post being seen.  Find a real news server.

>I try to run

>pppd proxyarp mtu 1280 persist nodeflate noauth lcp-echo-interval 10
>crtscts lock 10.10.1.2:10.10.1.1 /dev/ttyS4 115200 debug nodetach
>in my system

What are you trying to do?   Connect to an ISP?   Connect a serial
link to another computer?     What operating system?   You show
"/dev/ttyS4" which in Linux would be the fifth (very uncommon) classic
RS-232 serial port.    Assuming Linux, what does  'ls'  show?

[spica ~]$ ls /dev/ttyS*
/dev/ttyS0  /dev/ttyS1  /dev/ttyS2  /dev/ttyS3
[spica ~]$ 

During boot, is your kernel loading an appropriate serial driver?
In /var/log/dmesg, I see

[    0.518034] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.538368] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A

Notice the second line - on this computer, there is an actual RS-232
serial port.  On two other computers here, the line is missing
because there is no classic serial port (everything is USB, which is
a different device and driver).

>and it sending the same thing over and over

>sent [LCP ConfReq id=3D0x1 <asyncmap
>0x0> <magic 0x8bab12d4> <pcomp> <accomp>]

"Hello!   Is anyone out there?"

The peer at the other end of the serial link is not responding.
Is your connection to the peer (modem, cross-over cable or similar)
connected?  Is there a pppd daemon listening on the appropriate port
on the peer?   More details needed.

        Old guy

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Thread

PPP over standard serial port Elison <elison.niven@gmail.com> - 2011-06-21 06:53 -0700
  Re: PPP over standard serial port ibuprofin@painkiller.example.tld.invalid (Moe Trin) - 2011-06-21 14:46 -0500
    Re: PPP over standard serial port Elison <elison.niven@gmail.com> - 2011-06-21 23:16 -0700
    Re: PPP over standard serial port xieblueone@gmail.com - 2017-11-19 18:54 -0800
      Re: PPP over standard serial port Moe Trin <ibuprofin@painkiller.example.tld.invalid> - 2017-11-20 21:15 +0000

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