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

[JF Mezei]

Chris Scheers wrote:

> The DELNI was connected to the company network, which was primarily 
> 100MB.  Periodically, something on the 100MB network would start 
> generating enough data to swamp the 10MB DELNI, causing LAT to go down.

In this case the "DEC" ethernet segment would be fully paralysed, and
LAT announcements from the PDP-11s would also go away. This chap's
problem is that only the VAX's LAT service disapears from the decserver.


> Putting a 10MB switch between the rest of the network and the DELNI 
> solved the problem.

If the main ethernet segment has a broadcast storm, then the switch
would relay all broadcast packets over to the DEC ethernet segment and
swamp it.

If you go to outfits such as Black Box, you can find AUI to RJ45
transceivers for cheap. You can then build a twisted pair etehrnet
segment and use a modern switch instead of the DELNI hub. And a managed
switch might help you analyse LAN problems.

This is what I did to my 3100 and all mighty Microvax II towards the end
(and still do to my 4000-600).