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Cisco Self-Study: Implementing IPv6 Networks (IPV6) by Régis Desmeules

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Summary

After reading this chapter, you should be able to explain the rationale behind IPv6 and should have a basic understanding of the main features and benefits provided by IPv6. In addition, you should remember the following information:

  • Studies predict an exhaustion of the current IPv4 address space between 2005 and 2011.

  • The IPv4 address space is limited by its 32-bit address scheme. Moreover, large portions of the space are already allocated, and other parts are unavailable as globally unicast addresses.

  • As the Internet continues to grow, more IPv4 addresses are requested for new devices and applications.

  • The combination of CIDR and NAT mechanisms has helped slow down the exhaustion of the address space. However, NAT breaks the end-to-end ...

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