Figure 813 Router D has failed

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172.31.1 Nilrtftfc -72.31

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172.31.1 Nilrtftfc -72.31

19?."c8.125.1D -92.1iS.1f5 15

With the failure of Router D, all the hosts within its network are no longer accessible from the outside. Router C, after missing six consecutive updates from D, will invalidate its C-D route and advertise its unavailability. Figure 8-14 illustrates this. Routers A and B will remain ignorant of the route's failure until notified by C.

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