Re: Upcoming time boundary events

On 5/30/2025 8:18 AM, Simon Clubley wrote:

On 2025-05-29, David Wade <g4ugm@dave.invalid> wrote:

On 5/27/2025 8:15 AM, Simon Clubley wrote:

These old protocols have a habit of staying around a lot longer than
expected. For example, I suspect somewhere people are still using UUCP,
2780/3780, xmodem, DDCMP, original SNA (not SNA over TCP/IP), etc, ...

>
SNA is an architecture. SNA over IP is still SNA. In fact 3270 over
BiSync can be part of an SNA Network. Would you include SNA over X.25?
>

 I look at SNA in the same way as I look at DECnet. At one time, DECnet
ran over its own transport and lower-level protocols. As a result of
a changing world, it was then adapted to run over a protocol (IP) which
is not a part of SNA/DECnet.

Isn't DNA the equivalent of SNA?
 > For me, the split point between original and current SNA/DECnet occurred
 > when the previously fully native implementation was adapted to run over IP.
Isn't it more accurate to say that support for IP was added as a
possibility in parallel with still supporting the other protocols?
Arne