Information Technologies Division №230

The current communications infrastructure at YerPhI was developed from 1994-1995 and is mainly based on 10Mbps Ethernet technology. Later development in 2001-2002 using DESY-supported old 10Mbps switches primarily concerned with sufficient enlargement, but the information backbone and its topology remain unchanged.

The last development was the 2005- 2006 NATO Networking infrastructure project. In the framework of that project, 4-wire Fiber optic cables are installed between 6 buildings of Yerphi. The new layer-II switches (one per building) were established. User-level networks are still mainly based on 10 MB Hubs, and the hub-segmented huge network does not allow securing to isolate one segment from another and using VLANs. Even segmentation via routers does not solve the problem inside the segments themselves. End users in YerPhI used Intel-based Workstations with Linux and Windows platforms. All computing facilities are included in YerPhl's Local Area Network. YerPhI LAN consists of ten buildings, covering a big enough area. Practically all types of TCP/IP protocol stack services are available for end users. In total YerPhI computer network consists of over 400 workstations. They are located in 10 buildings At Yerphi and Aragats, Nor-Hamberd Stations (see Site Diagram).