[Info-vax] Loosing all LAT connections on one machine in DECNet Network

[Bob Koehler]

In article <a92370af-f324-4eb7-b6b4-458e0ac5c4c0 at s20g2000yqh.googlegroups.com>, JCamCMKRNL <jcam90502 at earthlink.net> writes:
> I have a Dedicated network (10-Base5 ethernet) which only runs DECNet
> traffic on it. This network has 5 Machines on it (four PDP-11/RSX11M+
> and one VAX/VMS) and several DECServer 200MC terminal servers.
> 
> Recently on a few occasions (three times in the last three weeks) all
> the LAT connections to the one VMS Machine are dropped.

   If you have LAT then you are not only running DECnet, LAT is a
   different ethernet protocol than DECnet.

   Which is important because LAT can't handle routing and a lot of
   bridges that disturb its sense of order and timing.  DECnet can.

   I agree with the others that you are most likely seeing a hardware
   problem, perhaps in the DELNI, perhaps in the VAX's NIC, or the
   cable between them.  Possibly elsehwere, but I'd look there first.