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CCNP Routing and Switching ROUTE 300-101: Official Cert Guide by Kevin Wallace

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OSPF Neighborship over Point-to-Point Links

Point-to-point serial links can be a bit boring. You configure IP addresses on either end, configure the clock rate if using a back-to-back serial cable in a lab, and configure no shutdown on the interfaces. When enabling OSPF on the interfaces, no extra effort is required compared to LANs—just enable OSPF on the interface, and rely on the default OSPF network type of point-to-point.

However, serial links can provide a convenient and uncluttered place to experiment with OSPF network types. As such, Figure 7-5 shows a small network with two routers, with Example 7-7 that follows showing several examples of the OSPF network type. (This small network matches a portion of the network shown in Figure 7-1 ...

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