The Frascati
National
Laboratory Local Area Network supplies network connectivity for the
users
connected directly at the socket.
The available
network
performances are 10Mbps or 100Mbps speed and half or full duplex mode.
Each building is connected to the central switch in the computing
service
building by a gigabit ethernet uplink.
An IEEE 802.11g
wireless
service is also available at 54 Mbps shared with other users.
By using the new
network
appliances, it is possible to use VLANs
which allows the division of the network traffic. In this way the hosts
on the network do not have continuous interruptions.
On a large campus,
like the National Laboratory of Frascati, with about 1200 hosts, it is
advisable to use and to improve VLANs.
The computing
service
set up the Network for guests researchers or "External hosts" who can
connect
to the global internet without restriction, using DHCP or wireless.
To protect "Internal
hosts", which are signed on in the National Laboratory of Frascati,
"External
hosts" are connected by VLAN
131or "External
VLAN". In this VLAN hosts are submitted to the firewall regulations
like
any other Wide Area Network users.
Author: Angelo Veloce
[ LNF | Computing | Networking ]