[HECnet] Thousands of DECnet errors on Tops-20 --> Ddp device

[Paul Koning]

> On Jan 17, 2021, at 5:56 PM, R. Voorhorst <R.Voorhorst at swabhawat.com> wrote:
> 
> 9934 ;*** ALTHOUGH THERE IS NOTHING REALLY IN THE DDCMP SPEC TO PROHIBIT SIMPLY 
> 9935 ;*** STARTING OFF WITH WILD AND WIERD NUMBERS, SOME LESS-THAN-ROBUST SYSTEMS 
> 9936 ;*** TEND TO GET TERRIBLY CONFUSED IF THE FIRST DDCMP NUMBERED MESSAGE ISN'T 
> 9937 ;*** NUMBER "1", SO . . . RESET THE MESSAGE NUMBERS 

That's a strange comment, because the DDCMP spec is quite explicit about the required iniitial value of the sequence numbers.  Of course it is; sequential message delivery can't work if the two sides don't agree on what number to start with.

	paul

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sonic.net/pipermail/hecnet-list/attachments/20210118/09590253/attachment-0001.htm>