the Campus Network to ATM
In October 1996, Computer Centre has successfully completed the
pilot project of deployment of ATM backbone network connecting the Run
Run Shaw Building, the Old Library Building, and the Meng Wah Complex.
(See article on ATM
and Virtual LAN at HKU in Computer News #65).
This year we have focused on extending the ATM (155 Mbps to 622 Mbps)
backbone network to the other buildings in the main campus and gradually
replacing the FDDI (100 Mbps) backbone network, replacing T1 connections
to remote campuses using public ATM network, and deploying the ATM VLAN
(Virtual Local Area Network) technology to connect dispersed locations.
By January 1998, the ATM backbone network of the University's Campus Network
will be in place. The progress so far is as follows:
By October 1997, the ATM backbone network is extended to connect all centrally
administered classrooms in the main campus, and a related article on Internet
Access from a Classroom in this newsletter describes the benefits of
using VLAN to connect the classrooms.
Figure 1. HKU Main Campus ATM Network in 1998
The ATM backbone network will be extended to all major buildings in the
main campus by January 1998. (Figure 1.) The ATM switches in Computer Centre computer room will be connected by 622 Mbps fibre links while 155
Mbps fibre links connect to ATM equipment in other buildings. Some
of the buildings will be connected with dual ATM links to provide fault
tolerant and increased bandwidth.
Figure 2. Network for the Three Major Remote Sites in 1998
The three remote sites of the Faculty of Dentistry premises in Prince Philip
Dental Hospital, the Faculty of Medicine premises at Sassoon Road and Queen
Mary Hospital are connected to the ATM backbone network of the main campus
via three public ATM links offered by Hong Kong Telecom. The speed of each
of these public ATM links is 10Mbps and will be connected by December 1997.
The expected completion date for the conversion from the existing T1 link
(1.544Mbps) is January, 1998. (Figure 2)
Figure 3. Connections of Residential Halls & Remote Campuses
The Hall-Network is due to complete in December
1997. In 1998, the residential halls and the remote campuses will
be connected as shown in Figure 3.
Shen Tai Yen
Tel: 2859 2482