From: Rob Compton (vekvhrxv.dkdjqrz@relay.tunkki.fi)
Date: Thu Mar 02 2000 - 10:59:22 EET
Hello fellows.
My latest problem relates to one of my TNC based ports.
The TNC is a TNC220 in KISS mode, though I am sure that has absolutely
nothing to do with the problem, but I'm sure that someone will want that
info.
The problem is thus: it transmits the same frame, probably 8-10 times, in
one big transmission,
and because maxframe for that port is set at 3, I quite often see 24-30
frames of 250bytes in length being sent each time the wireless transmits.
And at 1200bd, that's taking a lot of time on a shared channel.
What could be causing it?
The TNC is hooked up to /dev/ttyS1, and I don't have anything else on that
irq (3).
The TNC is connected to the port via a fully connected RS232 lead - ie: a 25
core shielded cable with D-25's on both ends, passing full continuity
checks, no shorts, etc...
The other TNC based port on /dev/ttyS2 is working fine.
The system is thus:
Cyrix MX II PR233, 32Mb RAM. 64Mb swap memory, 4 serial ports (ttyS0-3)
using irq's 4,3,10 & 12. USCC at 300h, PC100 at 280h, distro is Definite
Linux v7 (a British distro based around RH6.1) with Kernel 2.2.13.
ax25-tools-0.0.5, ax24-utils-0.0.4, libax25-0.0.7, node-0.3.0, xfbbd,
jnos(g0mhd) 1.11d, clx501, KDE. Installed on 2 x HDD's, 1 x 520Mb, 1 x 1Gb,
plus occaisional incursions from a 100Mb Zip disk.
Any ideas anyone?
Regards
Rob G1ZPU/GB7ZPU
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