RE: AX25/TCP/IP Help

Jim Wilcox (
Sun, 14 Mar 1999 09:16:47 -0500

I am using Slackware w/ kernel 2.0.35 and ax25-utils-2.1.42a. Here is how I
start my ax25 stuff.

/usr/sbin/mkiss -s 1200 /dev/ttyS0 /dev/ptyq0 /dev/ptyq1
/usr/sbin/kissattach -i /dev/ttyq0 ax0
/usr/sbin/kissparms -p ax0 -t 300 -s 100 -r 25
/usr/sbin/nrattach -i netrom
/usr/sbin/netromd -i
/usr/sbin/mheardd -f
/usr/sbin/ax25d -l

Here is what my axports looks like:

# /etc/ax25/axports
# The format of this file is:
# name callsign speed paclen window description
ax0 KE4IHI-7 1200 255 2 145.070 MHz (1200 bps)

Here is what my nrports looks like:

# /etc/ax25/nrports
# The format of this file is:
# name callsign alias paclen description
#netrom OH2BNS-10 #LNODE 235 Switch Port
netrom KE4IHI-6 IHIDX 235 Switch Port

This works for me. Other that this, you need to make sure your baud rate
from your computer to your TNC is 1200.

Hope this helps!


> -----Original Message-----
> From:
> []On Behalf Of gary0319
> Sent: Saturday, March 13, 1999 10:50 PM
> To:;
> Subject: AX25/TCP/IP Help
> Hello Linux Lovers
> This is my first posting to this group. I am having trouble
> getting AX25
> and TCP/IP to talk to my Kantronics KAM TNC running in the
> KISS mode. I
> would appreciate any suggestions you can give me.
> My current system:
> Slackware 3.5, kernel 2.0.34 compiled per textbook "Linux
> Configuration
> & Installation 4th Edition".
> Applied the patch - 2.0.35 to upgrade the kernel to use with
> ax25-utils
> 2.1.42a and net-tools 1.32-alpha.
> AX25 and serial support was selected before the kernel was compiled
> using menuconfig.
> Symptoms:
> 1. Minicom communications program will work through ttyS0
> (com 1) when
> connected to an external modem. Connected to BBS without any problem.
> 2. Next I connect my KAM tnc in KISS mode to ttyS0. The mkiss command
> appears in /usr/sbin. Tried the command "mkiss -p -c -h -l -s 1200
> /dev/ttyS0 ptyq0"
> No error messages were echoed. Is there anyway to tell if the
> mkiss is loaded and running?
> 3. Next command issued " kissattach - i -m 512
> /dev/ttyq0 ax0"
> (ax0 is name used in the axports file - the only port
> used for VHF)
> Message echo "kissattach: open: I/O error"
> 4. The ifconfig command shows only the "lo - Loopback" is attached.
> Should this also show the radio port if kissattach is working?
> 5. I assume the axattach command is not used for this
> configuration as
> directed in the HOWTOs for the version I am running? I do not see the
> command in any directory.
> I understand the problem could be the ax25 support in the kernel but I
> have tried recompiling a couple of times with careful
> consideration for
> ax25 and serial support.
> Sorry if these questions are too newbie but I do need some elmering.
> This is my first round with Linux and ax25. Thanks a lot.
> Gary C. Meyer, W0DYD, Minnetonka, MN

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