Foundation Summary

The Foundation Summary provides a convenient review of many key concepts in this chapter. If you are already comfortable with the topics in this chapter, this summary might help you recall a few details. If you just read this chapter, this review should help solidify some key facts. If you are doing your final prep before the exam, the following lists and tables are a convenient way to review the day before the exam.

Figure 1-9 shows the complete enterprise composite model.

Figure 1-9. Enterprise Composite Model

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Figure 1-10 shows the IIN and SONA layers.

Figure 1-10. IIN and SONA

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Table 1-9 summarizes the different routing protocols.

Table 1-9. Comparing Routing Protocols
ProtocolDistance Vector or Link StateClasslessInterior/Exterior Gateway ProtocolConvergence SpeedProprietary
BGPPath VectorYesEGPSlowNo