Rolanet (Robotron Local Area Network) was a networking standard, developed in the former German Democratic Republic (GDR) and introduced in 1987 by the computer manufacturer Robotron.
It enabled computer networking over coax cable and glass fiber with a range of 1,000 metres (3,300 ft).
Networking speed was 500 kBd, comparable to other standards of the day.
A maximum of 253 computers could be connected using Rolanet.
It is no longer possible to assemble a functioning Rolanet system today, due to lack of software and working hardware.