The increased address space is suf?¬?cient to allow
organizations to de?¬?ne a single pre?¬?x for their entire network. Figure 7-10 shows how this
aggregation occurs.
278 Chapter 7: Managing Address Spaces with NAT and IPv6
Figure 7-10 IPv6 Address Aggregation
Aggregation of customer pre?¬?xes results in an ef?¬?cient and scalable routing table. Scalable
routing is necessary to expand broader adoption of network functions. Scalable routing also
improves network bandwidth and functionality for user traf?¬?c that connects the various
devices and applications.
Internet usage??”both now and in the future??”can include the following elements:
?– A huge increase in the number of broadband consumers with high-speed connections
that are always on
?– Users who spend more time online and are generally willing to spend more money on
communications services (such as downloading music) and high-value searchable
offerings
?– Home networks with expanded network applications such as wireless VoIP, home
surveillance, and advanced services such as real-time video on demand (VoD)
?– Massively scalable games with global participants and media-rich e-learning,
providing learners with on-demand remote labs or lab simulations
Assigning IPv6 Addresses
Interface identi?¬?ers in IPv6 addresses are used to identify interfaces on a link.
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