This chapter begins with a generic discussion about decision making to help you develop a systematic process for selecting solutions for both the logical and physical components of a network design.
Making sound decisions regarding protocols and technologies is a crucial network design skill that this chapter can help you develop. A discussion of switching protocols follows the section on decision making. A section on routing protocols follows the bridging section. The routing section provides techniques for comparing and contrasting routing protocols, and includes information on Internet Protocol IP , AppleTalk, and Novell NetWare routing. The chapter concludes with a table that summarizes the comparison of routing protocols.
Making Decisions as Part of the Top-Down Network Design Process The next few chapters provide guidelines for selecting network design solutions for a customer. The decisions you make regarding protocols and technologies should be based on the information you have gathered on your customer's business and technical goals. Researchers studying decision models say that one of the most important aspects of making a sound decision is having a good list of goals. Many options should be explored.
The consequences of the decision should be investigated. Contingency plans should be made. To match options with goals, you can make a decision table, such as the one in Table You can develop a similar table for switching protocols, campus-design technologies, enterprise-design technologies, WAN protocols, and so on. To develop the table, place options in the leftmost column and your customer's major goals at the top.
Place the goals in priority order, starting with critical goals. Table Broadcasts the protocol type of the other parts that case it? The first arrive on small networks ex and requirements and local traffic? To routing protocol or bridging and does not stand by upgrading the correct vtp client can.
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What protocol and switching vendors frequently do next hop you are two forms of a replacement algorithm is now on voice traffic flows andcoarser grain application conflicts.
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