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PA2AGA > HDDIG 26.02.00 07:27l 158 Lines 6588 Bytes #-9567 (0) @ EU
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Subject: HamDigitalDigest 2000/56A
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Ham-Digital Digest Fri, 25 Feb 2000 Volume 2000 : Issue 56
Today's Topics:
AX.25 with TCP/IP routing? (4 msgs)
Data rf frequency...which one? (2 msgs)
Internet over Packet
Internet over packet?
Kantronics Interface pinouts? (2 msgs)
MFJ 1278B INFO PLEASE
MFJ 1289W program
RTTY Contest Software
sangean ats909 (2 msgs)
What is a good TNC? (2 msgs)
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Loop-Detect: Ham-Digital:2000/56
----------------------------------------------------------------------
Date: Thu, 24 Feb 2000 14:43:09 -0800
From: Daniel Levner <levner@Stanford.EDU>
Subject: AX.25 with TCP/IP routing?
Hello guys, and thank you for all the prompt responses that I got.
However, I think I phrased my question wrong despite my many attempts. I
have received replies concerning different dynamic routing protocols and
different software systems that I may use, BUT, what I'm more concerned
with is this: is there some protocol or software system that people out
there USE, which constitutes, in essence, some existing infrastructure?
If I put up a transmitter somewhere on the globe without making special
arrangements with people in the area to capture and forward its packets,
can I count on there being a nearby station that supports one of the
dynamic routing algorithms that people mentioned, so that it will
nonetheless receive and forward my packets after my receiver requests it
to?
Thanks,
Danny
On Wed, 23 Feb 2000, Daniel Levner wrote:
>
> Hi guys. I have two questions, one more specific and one more general,
> that I was hoping someone on here could help me with.
>
> The first: I'm looking for information on using TCP/IP over an AX.25
> newtork. By that I mean more than sticking the TCP/IP packets in the
> information field of the AX.25 packet, but rather how to find routes for
> my AX.25 packets in the first place. Maybe my second question will make
> the first more clear.
>
> The second: I'm wondering whether there is a way that two remote stations
> could contact each other by hoping packets through some network without
> having to have static routing information (say if the first station is
> mobile). What I am asking, really, is whether there is some mechanism out
> there (which people actually use) that allows my first station to send out
> some sort of "request for route" and establish a connection (whether
> TCP/IP or otherwise) to the second station. It doesn't all have to go
> through the air and I don't mind if the route goes over wired TCP/IP.
>
> To hammer this question to death, I'd like to know whether there is a way
> that stations A & B can contact each other through station C without
> having to make specific arrangements with station C, but, rather, that
> station C happened to be in between and "volunteers" to route packets.
>
>
> Sorry for the mess,
> Danny
>
>
>
>.
------------------------------
Date: Fri, 25 Feb 2000 01:57:27 GMT
From: horseshoestew@my-deja.com
Subject: AX.25 with TCP/IP routing?
In article
<Pine.LNX.4.10.10002242341280.9123-100000@dns.bde-arc.ampr.org>,
kd6lvw@att.net wrote:
> On Thu, 24 Feb 2000, Daniel Levner wrote:
> > ...
> > If I put up a transmitter somewhere on the globe without making
special
> > arrangements with people in the area to capture and forward its
packets,
> > can I count on there being a nearby station that supports one of the
> > dynamic routing algorithms that people mentioned, so that it will
> > nonetheless receive and forward my packets after my receiver
requests it
> > to?
>
> No. There is often no cooperation between amateur radio operators of
a high
> enough level for such an organized network to exist. In my area,
getting any 5
> operators to agree on anything is a miracle.
Amen.
However, Daniel, it isn't just the amateur community that is at fault
here... It is the entire Internet community. Let's say you wanted to
plug your laptop with an ethernet card onto a TCP/IP ethernet network at
any random job site - you wouldn't expect to be able to just plug it in
without getting an IP address coordinated - WOULD YOU? Of course not.
So how on earth would you expect to get a similar thing to work in the
amateur community with the situation described aptly by kd6lvw?
I remember when I was first getting into packet radio networks - and I
was trying to bring my expertise from my computer science background to
help coordinate the packet networks here in SoCal. I came in very
optimistic - but within a very short time I began to see the truth(as
described by kd6lvw). Then one guy that had finagled his way onto the
board of the SCDCC(Southern California Digital Communications Council)
gave me this very good piece of advice; "If you want to be successful
in LOS radio(packet included), find the very highest antenna site, and
transmit with the highest possible transmission power. In other words,
just blow people away, then they will have to worry about coordinating
with YOU, not vice-versa. I heeded this advice, and kissed-ass with
some locals that controlled some mountaintop sites. I was the first one
to set up a 9600 bps dynamic IP router/NETROM node in Southern
California in 1994(the kind of thing you have been dreaming about,
Daniel). Unfortunately, I tried to use some Kantronics Data Engine
English software contraption(JNOS/BPQ) that was a total piece of crap(I
doubt that the EVER got the bugs out of it) - so it had to come down off
To be continued in digest: hd_2000_56B
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