[nos-bbs] Fwd: UHF TCP on AX25

[Bill Vodall]

FWIW - some JNOS related comments on our local list...

73
Bill


---------- Forwarded message ----------
From: Bill Vodall <wa7nwp at gmail.com>
Date: Wed, Feb 26, 2014 at 1:31 PM
Subject: Re: UHF TCP on AX25
To: All things digital and fun <seatcp at wetnet.net>


On Sun, Feb 23, 2014 at 11:41 AM, Bill Vodall <wa7nwp at gmail.com> wrote:
> First UHF 9k6 AX25 IP PING this year?
>
> If anybody has 9k6 UHF - (D710 works great) - join the fun on 440.8
> FWIW - this ping session is over 10 days old...

> root at nofi606:~# ping -i 1000 10.36.99.2
> PING 10.36.99.2 (10.36.99.2) 56(84) bytes of data.
> 64 bytes from 10.36.99.2: icmp_seq=811 ttl=64 time=5676 ms
> 64 bytes from 10.36.99.2: icmp_seq=840 ttl=64 time=4404 ms (DUP!)

Replies:::

> 10. address - looks like MESH..

Totally independent.  Just using what Kenny had set up.

> try OLSR

Going to someday to see if it's as bad as folks say it is on a slow
channel.  Packets, via digi's probably, every 30 seconds will be
beyond 'busy.'

Been following Babel routing since Byran talked about it at SG last
year.  Looking forward to trying that as a real potential tool.

http://www.pps.univ-paris-diderot.fr/~jch/software/babel/

> IP address isn't routable...

That's a good thing in this situation.  The project is to do TCP on
AX25.  Far too much distracting clutter on the Internet to let it in -
at least at this point and without some serious controls.  Even then
I'd hesitate to use 'routable' addresses just to keep things clean.  A
proper port forwarding firewall would provide the NAT needed.

> doesn't really "work great"

Never stop that message Dennis - it's a good story.   But....   What I
said was that the "Kenwood D710 works great - and it does:    9600 or
1200 baud - VHF or UHF.  All at the touch of a button.  If only we'd
had that 20 years ago...   It's cheap too.   The US inflation
calculator says that the $400 I paid in 1986 for a KPC-1 and HT would
be the same as $854 today - that would buy the D710, a second TNC-X, a
PI and an antenna...  Wow.

As for the IP channel - that is certainly not great.  Not even good.
More like it's amazing that it even works at all.  Not only are we
using a digipeater for the 'AX25 RF Physical layer' - but we're using
an APRS wildcard digi.  Probably getting some self generated
collisions now and then.   I'm hearing a few of the transmissions from
Kenny direct - that's where the DUPS's are coming from.  I'm hearing
the same transmission once direct and once via the digi - thus a DUPE
 Goal here wasn't performance.  It's more like getting the dusty old
studebaker out of the garage and taking it around the block for a
Sunday afternoon drive..

Now that there's a bit of connectivity - what's next.   (drum roll)
Time to tune up JNOS...   Yes - I know Linux is better but given that
I'm using an old Linux install and every little function is a small
battle of it's own - I'll be time and fun ahead to just get the basic
services running in JNOS  (time, BBS, chat, email, FTP and APRS) .
That'll give the other folks on the channel something to log in to and
test out.  In addition JNOS has a web based interface so I'll be able
to access it from 'outside' once I figure out the reverse http proxy
over a tunnel magic...

The next Linux box will have a 7 year newer version of linux and there
I'll run with native tools.

Onward!

73,
Bill, WA7NWP