On 08-Jun-99 Tim Salo wrote:
>> Date: Tue, 08 Jun 1999 17:09:46 +0100 (BST)
>> From: Dirk Koopman <[EMAIL PROTECTED]>
>> To: [EMAIL PROTECTED]
>> Subject: Re: USB TNC
>> [...]
>> Another argument for ethernet is that you can obtain perfectly servicable
>> 10Mb ethernet interface chips for approx $5 each in smallish quantities
>> which makes it an even better option.
>> [...]
>
> If you use Ethernet, perhaps you should use IP as well.
>
> That way I could think about being able to use any Internet-connected
> TNC in the universe, (firewalls and filtering notwithstanding).
>
on a more serious note, since the likelyhood is that you are running IP over
such a 'fast' link, all you actually need to do is to have a mechanism to
allow it to acquire its IP address (RARP/BOOTP) and to make it ask and answer
ARP queries (oh and maintain an ARP cache and stick the correct ethernet
address onto the appropriate IP addressed packet).
Other than that it doesn't need to implement any kind of IP stack at all.
Since you will need a PIC or somesuch on the board (probably) manage the
ethernet chip->SCC interface, this doesn't seem to me to be much of a problem.
Oh, and whilst I am on, how about designing a standard interface to allow
suitable daughter boards to be plugged into this TNC(NG) to do the radio
interfacing or shall we simply standardise on full X21?
Dirk G1TLH
---
Dirk-Jan Koopman, Tobit Computer Co Ltd
At the source of every error which is blamed on the computer you will find
at least two human errors, including the error of blaming it on the computer.
