Technology behind the network

Lnet is mainly based on Ethernet technology, which is commonly used on local area networks. However, long distances mean that the trunk network is implemented with fibre optic cables instead on copper cables. Connection outside the network is implemented through Funet network that is maintained by CSC – IT Center for Science. The interface between Lnet and the outside world is located in the premises of the Lappeenranta University of Technology; however, it is completely separate from the university's own network.

The primary network interface is 100 Mb/s Ethernet connection. Trunk connections between the buildings are implemented through 1 Gb/s fibre optic technology (1000Base-LX/SX), except for the connection between Skinnarila and the city centre, which has been upgraded to 10 Gb/s. Cabling outside the city centre is owned by LOAS. In the city centre, fibers owned by the city of Lappeenranta are also used.

Currently (2013), the network is divided into 28 separate subnets, with around 2500 connections altogether. The service infrastructure includes nearly a hundred switches and a handful of servers that support the network software. Building switches are Hewlett-Packard Procurve switches.

In some sites (Kalliopellonkatu 10, Katajakatu 8, Leirikatu 2) the network provided is a Wifi connection instead of cabled LAN connections. The available wireless networks are eduroam (used with university user accounts) and WLNET (works with credentials that can be found in LOAS intra).


Lnet is primarily administered by a group of students and ex-students of Lappeenranta University of Technology.

Problems and network faults should be reported to the administration by using the problem report form.