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This chapter is from the book


This chapter described how all of the following can enable more efficient use of IP addresses:

  • Subnet masks

  • VLSMs

  • Private addressing

  • NAT

This chapter also showed that hierarchical addressing allows for efficient allocation of addresses and a reduced number of routing table entries. VLSMs, specifically, provide the capability to include more than one subnet mask within a network and the capability to subnet an already subnetted network address. Proper IP addressing is required to ensure the most efficient network operations. Finally, the IPv6 addressing format was presented.

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