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n-1-4-012.55a
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Subject: N-1-4-012.55
ELTENET: The WAN of Eotvos Lorand University in Hungary
Csaba Laszlo <h26csa%huella.bitnet@relay.eu.net>
Laszlo Daruhazi, Ferenc Telbisz
Information Technology Center, Eotvos Lorand University of
Sciences
As a part of HUNGARNET, the universities of Budapest play a
significant role in networking in Hungary. There is an FDDI ring
being set up in Budapest connecting the three biggest networks:
Eotvos Lorand University of Sciences WAN, the University of
Economic Sciences, and the Technical University. There are also
significant efforts in networking in Debrecen where a MAN FDDI is
to be set up and Szeged where a university MAN is operational.
These networks are based on fiber optic technology.
ELTENET is currently the biggest network. ELTE has more than 10
main campuses with more than 60 buildings throughout Budapest, of
which 20 buildings at 7 campuses are currently connected to the
network. The idea of setting up ELTENET came in the summer of
1990 at the Faculty of Sciences. The Ministry of Education
financed part of the project with additional support from the
Mellon Foundation in the USA.
Plans started to be worked out in the fall of 1990, with a final
proposal accepted in the spring of 1991. The 12 km fiber
backbone became operational in the spring of 1992. The total
length of the coax cabling is about 12 km with more than 160
segments. There are more than 30 fiber- and coax-based repeaters
in the network.
There are currently 2 AGS+ routers at the Network Services
Center and three more at other campuses connected via 64 kbps
leased lines and, in the future, with 64 kbps X.25 backup. The
routing protocol is BGP to the autonomous system of the
University of Vienna that is the Internet gateway and IGRP within
the network. The network is in connected state to NSFNET,
EASINET and RIPE. There are one Class B and two Class C addresses
used on the network currently.
The official protocol is the standard TCP/IP. Most PC
installations use the public domain NCSA Telnet program but FTP
Corporation's PC/TCP is also used. On the VAXes the Carnegie
Mellon Univ. TCP/IP and DEC's UCX are used. As there are many
Vaxes on the network DECNET is also used.
The total number of hosts on the network is currently about 800.
The vast majority of these are PCs. There are about 30 DEC
machines among which the biggest one is the University's central
VAX 6000-510 with 128 MB main memory and 6 GB disk capacity. The
other large mainframe is an IBM 3090 with 128 MB memory and 35 GB
disk space. There are a smaller number of IBM and DEC RISC-
based workstation and some Sun Microsystem Sparcstations.