Faster Internet
Access
By
C. Y. Kwok
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CityUs own Internet
link was upgraded to 10 Mbps shared bandwidth on 7 October, 1999,
and it is now connected to UUNET Hong Kong (UUNET is the largest
ISP in the world). The upgrade not only provides faster Internet
access to staff and students, but also enables the link to be
used as a backup for the local HARNET as well as HARNETs
Internet links.
Prior to the upgrade, the link was
connected to the NetPlus service of the Cable and Wireless HKT
with guaranteed bandwidth of 512 Kbps. The upgrade was intended
to increase the Internet bandwidth to 1 Mbps so that the total
Internet bandwidth of the university would become comparable with
those of the other local universities. A 10 Mbps shared bandwidth
would effectively produce at least 1 Mbps equivalent of guaranteed
bandwidth under normal situations, but its cost was much less
than that of 1 Mbps guaranteed bandwidth. (One major drawback
of guaranteed bandwidth is that once the bandwidth is fully utilised,
network performance will drop to the floor.)
Currently the 8 local universities
are sharing two HARNET Internet links with a total bandwidth of
24 Mbps, from which CityUs allocation is around 3.2 Mbps.
Most of CityUs Internet traffic is in the incoming direction.
After the upgrade, it was found that the total incoming Internet
traffic volume has increased to over 6 Mbps during peak hours.