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Re: Struggling with AX.25

The fact that stty reported something different than what you had initially set may be indicative of some problem.
You didn't mention what type of TNC you had, but 38400 baud sounds a bit high. I recall that a TNC2 has a max setting of 9600 (as do many of the TAPR clones), although there is a simple mod to use 19200. If you have a TNC with a real serial chip, this does not apply.
Have you verified that it truly is in KISS mode (LEDs flash three times when powering up the TNC)? 

Bob, N7XY


On Dec 8, 2006, at 7:12 AM, Stephen Brown Jr wrote:
I have been struggling with AX.25 for days trying to make it work and I'm hoping someone can help me. My setup consists of a basic Debian 3.1 install running on Pentium II 400 Celeron with 64 megs of RAM and a custom 2.4.33.4 kernel with AX.25 support compiled directly in.
I have installed libax25, ax25-tool, and ax25-apps from the repositories and they appear to be installed and working correctly.
My problem is this. I can not get two known working TNC's working in KISS mode with this setup. At first, I thought it might have been something in the kernel, I was originally using the kernel that got installed by default, so I downloaded and compiled the latest 2.4 kernel. I have /etc/ax25/axports setup correctly, and running KISSATTACH yields me an ax0 device: 

n1vlv-debian:~# ifconfig ax0
ax0       Link encap:AMPR AX.25  HWaddr N1VLV-10
inet addr: 192.168.144.39 Bcast:192.168.144.255 Mask: 255.255.255.0 
            UP BROADCAST RUNNING  MTU:512  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:10
            RX bytes:0 (0.0 b)  TX bytes:108 (108.0 b)
I have also tried various settings using KISSPARMS, etc. I can communicate with the TNC's in command mode using minicom, so that would rule out the possibility of any cabling problems etc. I am also running a null modem adapter on one end.
When I run listen and hear packets, I see nothing on the display. When I attempt to connect to one of our local nodes using call, nothing happens, the radio does not key and it just hangs saying: 

GW4PTS AX.25 Connect v1.11
Trying...
And that is as far as I get. I also checked the serial port params using stty: 

n1vlv-debian:~# stty
speed 38400 baud; line = 0;
-brkint -imaxbel
Noticing that it was set to 38400 baud, I changed my axports and TNC to match. Not even really sure if this has any bearing impact on it, but tested it anyhow and I am getting the same results.
I am really out of ideas at this point and I'm about to reach my wits end. If someone could help me that would be greatly appreciated. 

73's
Stephen
N1VLV
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