The following scenario and questions are designed to draw together the content of the chapter and exercise your understanding of the concepts. There is not necessarily one right answer. The thought process and practice in manipulating the concepts is the goal of this section. The answers to the scenario questions are found at the end of this chapter.
Q1: | Figure 20-9 illustrates your network diagram. Your ISP gives you an address range of 2001:1BE0:3A0::/48. The edge routers also have addresses assigned on the links through which they connect to the ISP; these addresses are in a different address space. Subnet your assigned IPv6 space for this network and be sure to support summarization.
Figure 20-9. An IPv6 Network to Address[View full size image]
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1: | Figure 20-10 shows one solution for IPv6 subnet assignment on each of the links in this network. (Of course, this problem could have been solved in many other ways.) All network prefixes use the ISP assigned address space 2001:1BE0:3A0::/48, with the subnet assignment (shown as hexadecimal numbers in boxes on the diagram) as the next 16 bits, resulting in a /64 prefix.
Figure 20-10. One Solution to the IPv6 Network in Figure 20-9[View full size image]
To illustrate the address assignments, the addresses of the interfaces on the top core router are as follows (the subnet field is highlighted):
The addresses on the top internal router are as follows:
Note the following points:
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