Internet QoS for DiffServ-Enabled Routers

Differentiated Service Model (DiffServ) is currently a popular research topic as a
low-cost method to bring QoS to today's Internet backbone network. In this paper,
the author introduces the techniques and methodologies that used to design and
implement DiffServ-enabled (DS-enabled) routers. The adaptations of DS-enabled
routers are designed to cater to the low Internet connectivity within Universiti
Teknologi PETRONAS LAN. The author has implemented basic DiffServ setting
using three CISC03725 routers. Based on these DiffServ-enabled routers, the author
set up a small scale lab network to study DiffServ QoS features: priority dropping
(discrimination among different service classes), QoS guarantees and measuring QoS
using various formal metrics (delay and throughput). Furthermore, the author present
problems encountered during study, and the proposed solutions.