Figure 1-7 shows the network that we use as an example throughout this book.
Figure 1-7. The Zoom Integrated Products Internetwork
This network is used to examine the use of the Cisco IOS in the following environments:
This network belongs to a fictitious company named Zoom Integrated Products (ZIP). ZIP, which has its corporate offices in San Francisco, California, makes components for the semiconductor industry. Its Asian sales headquarters are located in Seoul, Korea. Both the corporate offices and the Asian sales headquarters have connections to the public Internet. ZIP also has manufacturing facilities in Singapore and Kuala Lumpur, Malaysia.
The ZIP network uses Frame Relay to connect Singapore and Kuala Lumpur to Seoul. Seoul has ISDN BRI dialup facilities. At its corporate offices, the ZIP network has a Gigabit Ethernet backbone and three Fast Ethernet network segments-two for high-speed connections to office suites and one for a LAN, where access servers reside for corporate dialup users. There are additional access servers for local dialup users in Seoul and Singapore. The corporate offices are connected to its sales headquarters via redundant HDLC links. A manufacturing assembly facility, which is located in San Jose, California, has dual HDLC links ”one to the corporate offices and one to the sales headquarters in Seoul. The San Jose facility uses a Token Ring network on the assembly floor.
ZIP uses a variety of internetwork protocols on its network, including AppleTalk, IP, and IPX. Cisco switches are used for desktop connectivity, and routers interconnect each site and each location. (Each router is identified by name in Figure 1-7.) Most locations have at least one access server for remote dialup users.
The ZIP internetwork is representative of many internetworks throughout the world in that it uses multiple network layer protocols and wide-area network protocols, uses a combination of routing and switching, and has access servers to handle connections from asynchronous devices. Although it is only an example, this network and its complexities are typical of internetwork deployment today. As we progress through this book, we will use the ZIP network as an example and show you how to configure all the Cisco IOS devices necessary to make this fictitious network a reality.