Network Design

This assignment should be done in pairs utilizing the Wired Lan Modelling feature at the WebLan Designer. Images resulting from the modeling process can be copied and imported into any drawing program, that can be used to add on the lines and labels needed.
A brief recap of switches, hubs and routers can be found at Routers, Switches and Hubs, and a lengthier and more complete one at http://www2.edc.org/cope/networkprimer/primch5.pdf.

Bear in mind, when making your design decisions, the costs of all components involved, remember that routers are more expensive than switches and that these are more expensive than hubs. Also include, whenever necessary, proxy servers and firewalls. The assignment should be completed today within the lesson, so you should not leave the room without checking with me that I have received them.

1) A school has two small campuses that operate at different physical locations, 10 km apart. The North campus has a computer lab with 9 workstations and a printer that are connected via a Token Ring Network, and 4 administrative computers and two printers that are networked to each other. A file server and colour printer are accessed by all computers in this campus, which are also connected to the Internet by means of a dedicated cablemodem. The South campus has two computer labs with 6 and 8 computers respectively, plus 5 other computers that are used for teaching and administrative purposes. There is one file server and network printer that must be accessed by all computers in the network. The North Campus will access the Internet via a dedicated cablemodem. Both campuses must be linked.
Draw a detailed diagram of how the network is set up and configured, and write down a brief rationale that explains your network design.


2) A multinational company has branches in Argentina and the US. The Argentina branch has 8 networked computers that are used to handle customer requests and post-sale service, whereas the US office deals with sales and production through 12 computers. Each branch has two network printers and a file server, and they must be connected to each other. Design a network that satisfies the requirements and explain which hardware and/or software solutions you need to adopt.