[HECnet] Is MIM running?

[Paul Koning]

> On Oct 20, 2021, at 11:38 AM, Thomas DeBellis <tommytimesharing at gmail.com> wrote:
> 
> Tomas,
> 
> Say, that is a very nice ping utility you have!  Would you know where I could get the source to it or its theory of operation?

I wonder too.  The DEC standard answer would be an "NCP loop node foo" command, which is an application protocol but a simple one (mirror, object 25).

I think I've seen a ping somewhere.  "dnping" in Linux?  It seemed to be something lower level, like an NSP message that would trigger a response from the destination node but not rely on any specific application object number being recognized.  Perhaps a data message sent to an unused logical link number?  That would produce a "no link terminate" disconnect-confirm message.

	paul