The design of the De La Salle University-Manila/PSI campus network backbone

The De La Salle University is one of the more prestigious universities in the Philippines and Asia. The DLSU-Manila Professional Schools Inc. (Manila/PSI) campus network, which started in 1989, has grown to be one that needs to be upgraded due to various factors such as increased network traffic and increased number of networked computers. The existing design is based on a multi-level star topology using Asynchronous Transfer Mode (ATM) at the core and Ethernet at the edge. There is one ATM switch and several Ethernet and Fast Ethernet switches. These are enough for existing network load. However, it is far from being able to cope with future demands especially teleconferencing 00 i.e., audio and/or video conferencing - and large and/or multiple file attachments to electronic mails. There are also related problems with the existing network design such as a large broadcast domain. The study shows the limitations and problems of the existing network. It identifies current and projected bandwidth requirements. In conclusion, the study proposes and compares the four design options for the network