[nos-bbs] mbox fbb 2 errors with FBB

[Boudewijn (Bob) Tenty]

That was with my station and only when I used telnet forwarding with FBB.
I'm still counting bytes when I can't sleep :-)

Developer of FBB is Bernard, F6BVP since many years.

Bob VE3TOK


On 16-04-08 06:50 PM, Maiko Langelaar wrote:
>
>> examples of errors reported between JNOS ("mbox fbb 2") and FBB ("N 2").
>
> What is the reasons for running FBB with N=2 ?
>
> Is this pure curiousity or is there a practical reason behind it ?
>
> The fact that we are now doing N=2 testing and possibly calling the 
> results a bug (I'm predicting the outcome for those who have a sense
> of humour), I need to point out that any so called FBB forwarding was
> always based on the original F6FBB protocols and the original FBB 
> software, which did not even have these 'N=' type settings.
>
> After the original FBB software was passed on to other developers by
> the sounds of it (correct me if I'm wrong please), it sounds like a
> few new 'modes' were introduced, but unfortunately those modes don't
> work with JNOS, that's why the N=1 came up.
>
> If people are expecting this to work for solutions other then N=1, there
> might be a problem here then. I don't have time to entertain these new
> modes unfortunately, really I don't. It's a lot of time and work. This
> is a hobby to me, a labour of love, surely people can appreciate that.
>
> JNOS with the original FBB software works fine, I have people running
> the original FBB software and I'm sure there are many others on this
> list, where things are working nicely.
>
>> The connection is via telnet.  Since JNOS doesn't have a trace
>> function for telnet like it does for AXIP or AXUDP ... used tshark
>> to produce the telnet trace output.
>
> If the telnet is over 44 connection, then 'trace encap 0x211 encap.log 
> 1000', it will give you similar stuff to what tshark is. If it's over
> the commercial IP addresses, then trace the 'tun' interface itself, it
> just means you have to go through all the data and figure it out :)
>
> I HAVE done this years ago, and in one case I found the software on
> the other end was inserting an extra byte which screwed up the checksum
> on the FBB session and I was never able to get forwarding to work in both
> directions, only one. I am convinced it was a bug in the 'other 
> software',
> but I could never prove it beyond a shadow of a doubt. It was a linux ver
> of FBB, not from the original author. I spent hours looking at my own
> log files and could never figure it out, so I had to 'give up' on it.
>
> Did I feel bad ? Yup I did, but it drained me.
>
> So the question stands - why is N=2 so important to have working ?
>
> Maiko
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