LANNET was a company acquired/dequired during a tumultuous period in the late nineties by Madge Networks. I created a brief history of Madge Networks here. After a search to find documentation about the product set, Jaap, was able to find a decades old CD for me. After a wetranfer of the CD, voila!
This article was originally published over at LinkedIn and contains links to all the above collateral: LANNET historical documentation - a networking company associated with Madge Networks