Packet Problem

From: Tim Neu (nbaqgu.dysigw@price.ro)
Date: Tue Sep 16 2003 - 04:23:17 EEST

  • Next message: Steve Fraser: "Re: Packet Problem"

    Hello!

    I have a VERY bizzare problem on Linux with AX.25. I can usually
    handle linux problems on my own, but this one I'm going to need to
    see if anyone else can help...

    The goal is to set up a linux box with AX25 installed, interfacing
    to two KISS TNCs on two normal serial ports (COM1/COM2) The system
    will be running node & trivnetdb (a perl database frontend for mysql
    modeled after ARESDATA), and will be used to keep track of runners
    in the Twin Cities Marathon in Minnesota, if I can get it up by
    then.

    I set up the box, got everything working, then at some point while
    my guard was down (as I thought I was putting on the finishing
    touches), one of the changes I made (I assume) "broke" the KISS
    interfaces. They stopped receiving packets, and any packets
    transmitted would be heard only by the box itself (using listen -a)
    but would never even key up PTT. Naturally, I didn't notice the
    problem until I had performed too many steps to sucessfully
    backtrace what it was that I had done...

    At fist I thought it could be a TNC wiring problem with PTT - so I
    hooked the serial port to a known-good radio & cable. There was no
    change in the problems. Then I thought it might be a problem on
    the TNC - so I swapped it with my own (again, known good) TNC.

    No change - but everything is still working great hooked up on
    another box.

    Here's the kicker - I can exit KISS mode on the TNC, use minicom,
    and sucessfully connect all over the place using all involved
    hardware - so all the hardware has to be good.

    I can also kill kissattach, run minicom and see the raw KISS packets
    scroll on the terminal.

    Its like kissattach is going into lala land.

    Finally, and with great fustration, I figured that if a fresh
    install had worked before, I thought I'd be safe reloading and
    starting from scratch to at least get it back up & running again.
    (getting the rest of it up was not _that_ hard)

    So now I've reloaded the box, and kissattach is still doing the
    exact same thing. I've tried several different kernel versions from
    ancient to bleeding edge with no change.

    Any ideas? It can't be hw since non-kiss mode works great. A
    re-install of the OS (Debian installed fresh w/reformat) should
    eliminate sw as the source of the problem.

    I'm stumped. It _should_ be working! Any ideas? It's driving me
    crazy.

    -- 
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