Case Study

As seen in the last chapter, the large multinational company Humugos has offices in 250 countries. Each country operates as a separate company, conforming to the tax and legal laws of the country. It is still important that each part of the organization must be capable of connecting to the others, but EIGRP is no longer feasible for a number of reasons. The main issue is the number of connections that each country has into the Internet. There is also some need to manipulate the traffic, particularly in terms of resource sharing between business units internationally.

The network topology of the case study Humugos is illustrated in Figure 9-2.

BGP-4 has been suggested as a solution for various reasons. First, the company needs yet another level of hierarchy. Second, the multiple connections to the Internet need to be managed with a sophisticated routing protocol. The capability to determine the traffic path that will be taken by a variety of parameters is also very important. This adds another dimension to the simple metric, which proves inadequate to the task of determining subtle distinctions in path selection.

The countries have now been configured to communicate using BGP-4 as the routing protocol between each country or autonomous system. This chapter deals with the design and configuration of the company's connections into the Internet.

Figure 9-2 Diagram of BGP Case Study—Humugos

Figure 9-2 Diagram of BGP Case Study—Humugos

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