Case Project 2-1: Designing a Corporate Network
You are asked to design a network for a medium-size company. The company decides to use the 10.0.0.0 private IP address. The network will span
six buildings, with a router in each building to join the networks.
Currently, the company has approximately 1,000 workstations in the following
●Building 1: 200 workstations
●Building 2: 125 workstations
●Building 3: 135 workstations
●Building 4: 122 workstations
●Building 5: 312 workstations
●Building 6: 105 workstations
Design a simple addressing solution that leaves ample room for growth and is easy to
administer. Explain what happens to your design if the number of hosts per network jumps
to over 1,024 per building.
Case Project 2-2: Implementing a Network for a Single Site
ABC Incorporated wants to implement a TCP/IP network for its only site. It has 180
employees and two buildings and requires Internet access for an e-mail server, a single Web
server, a single FTP server, and two routers, each with a single high-speed Internet interface.
If the company wants to hold ISP costs to a minimum, what kinds of IP addresses should it
primarily use? What is the smallest block of public IP addresses that the company can
purchase to cover its needs? (Hint: IP address blocks come in groups equal to 2b–1, in
which b is the number of bits in the total address block.)