8 Sep
2018
8 Sep
'18
7:19 a.m.
I had a brief conversation with James Wilcoxson (of the PR1ME Series 50 / PRIMOS emulation
fame) who mentioned he would be willing to implement X.25 connectivity for PRIMOS ... if
he had someone someone else to talk to ... he's using simulation PR1ME Ringnet
currently and has his various emulated PR1ME systems networking with that white nicely.
I seem to remember that a major X.25 player used PRIMOS as the backbone of their network.
Which PDN was that?
And, yes, I've used Dynamips X.25 quite extensively over a series of back to back
interconnected links, using the Cisco "x25" encapsulation over emulated serial
links. I wish there was better documentation as to the lower levels of the encapsulation
modes used by IOS.
What is your relationship with Tymnet, Mark? Are you at all familiar with the operation
of TYMCOM/X?
--
Jeffrey H. Johnson
jhj at trnsz.com
https://ban.ai/multics
On Sep 7, 2018, at 7:05 PM, Mark Abene <phiber at
phiber.com> wrote:
It's actually very easy to set up an entire X.25 network by tunneling over IP using
emulated cisco routers on dynamips.
I demonstrated this to another list member some years back.
By the way, just a minor correction: while Telenet/Sprintnet was a native X.25 network,
Tymnet was most certainly not. While the ISIS bus of a Tymnet Engine could be fitted with
a wide variety of protocol interface cards (X.25 among them), Tymnet's own internal
protocol was simply known as "Tymnet protocol", and was entirely its own thing.
There were also a number of X.75 gateways accessible on Tymnet, many on satellite links,
to allow users to connect to foreign X.25 networks.
-Mark
> On Fri, Sep 7, 2018 at 8:32 AM, Fred <fcoffey at misernet.net> wrote:
> On Thu, 6 Sep 2018, Jeffrey H. Johnson wrote:
>
>> Other things being worked and in various stages of completion are X.25 networking
and IBM 3270 terminal support. If we can complete the X.25 support, I envision creating a
'BAN X.25 PSDN', a virtual hobbyist Telenet/Tymnet-like PSN network for X.25
systems. There are other exciting
>> Multics projects in progress by other parties as well.
>
> Now this would be *awesome*. Over the years I've had some opportunity to rescue
some X.25 gear but declined because I didn't have a use for it.
>
> Let's just say I spent a fair bit of time on Telenet/Sprintnet back in the day
and it would be neat to capture that nostalgia.
>
> Fred