Sorry if this is totally ignorant, but I've had embarassingly little
experience tracing AX.25 protocol issues.
I'm trying to track down some serious performance problems on our
19.2kb network. We're seeing frequent disconnects between a Linux
AX.25 station and a G8BPQ node.
The Linux setup is kernel 2.0.34 with ax25-module-14 and utils 2.1.42a.
For the 19.2 link, we're running a T1 timer of 2.5 seconds, and T2
timer of 200ms.
At the bottom of this message is a trace of a common situation that we
see, with lots of poll/final exchanges in a short time period. This
seems odd, and wasteful of bandwidth. It sometimes seems like we have
more supervisory packets like this than we have packets with payloads.
Is this normal? If not, do we have a configuration problem that's
causing this (on either the Linux or the G8BPQ side), or is there some
other explanation?
Thanks for any light anyone can shed on this.
73,
John N8UR
[EMAIL PROTECTED]
--------
from listen -p pi0a -a -t, running on the W8APR-3 machine:
[Fri Feb 4 20:39:57 2000]
Port pi0a: AX25: W8APR-3->N8BJQ <RR R F R0>
[Fri Feb 4 20:39:59 2000]
Port pi0a: AX25: N8BJQ->W8APR-3 <RR R F R0>
[Fri Feb 4 20:40:00 2000]
Port pi0a: AX25: N8BJQ->W8APR-3 <RR C P R0>
[Fri Feb 4 20:40:00 2000]
Port pi0a: AX25: W8APR-3->N8BJQ <RR R F R0>
[Fri Feb 4 20:40:02 2000]
Port pi0a: AX25: N8BJQ->W8APR-3 <RR C P R0>
[Fri Feb 4 20:40:02 2000]
Port pi0a: AX25: W8APR-3->N8BJQ <RR R F R0>
[Fri Feb 4 20:40:04 2000]
Port pi0a: AX25: N8BJQ->W8APR-3 <RR C P R0>
[Fri Feb 4 20:40:04 2000]
Port pi0a: AX25: W8APR-3->N8BJQ <RR R F R0>
[Fri Feb 4 20:40:08 2000]
Port pi0a: AX25: N8BJQ->W8APR-3 <RR C P R0>
[Fri Feb 4 20:40:08 2000]
Port pi0a: AX25: W8APR-3->N8BJQ <RR R F R0>
[Fri Feb 4 20:40:08 2000]
Port pi0a: AX25: N8BJQ->W8APR-3 <RR C P R0>
[Fri Feb 4 20:40:08 2000]
Port pi0a: AX25: W8APR-3->N8BJQ <RR R F R0>
