I am trying to get DECnet working on a simulated VAX 780 (with simh) with a 3.x version of VMS. This is largely for nostalgic?reasons. I have the version of VMS 3.0 from John Dundas that Supratim posted nearly a year ago. I have also built a VMS 3.0 system by installing VMS from the VMS 3.0 distribution tape. Both of those systems seem to work?well. However I am failing to find a way of getting DECnet working. I have a DECnet end node key (and a routing key, come to that) from http://iamvirtual.ca/VAX11/VAX-11-software.html but that says that it only works for VMS 3.4 or later. I did try it on 3.0 anyway, but it did not get DECnet to work. It complains?about needing a license. Can anyone help me either upgrade my VMS 3.0 system to VMS 3.4 or higher (or just install the higher version from scratch), or help me find a DECnet key that works with VMS 3.0.

You are quite correct that LMF did not appear until VMS version 5. Prior to that you needed to install what was called a DECnet key to let you use DECnet on VMS. I do recall having to do this back when I managed a VAX-11/780 that ran VMS 3.x,and later VMS 4.x. Installing the so-called key actually patches the file NETACP.EXE. My reference to a license was because?that is actually what the system complains about the lack of when I try to start DECnet. Clearly this is not an LMF license. Cheers Peter On Sun, 21 Feb 2021 at 18:43, Dave McGuire <mcguire at neurotica.com <mailto:mcguire at neurotica.com>> wrote: On 2/21/21 12:36 PM, Peter Allan wrote: installing VMS have a that it it did higher ? ?LMF didn't appear in VMS until v5.0.? Is there some other licensing scheme for pre-VMS-5 DECnet that I'm unaware of?? I certainly don't remember any.? Lacking that, are you certain the DECnet package you're trying to get running is compatible with VMS 3.0? ? ? ? ? ? ?-Dave -- Dave McGuire, AK4HZ New Kensington, PA