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P 1 1 . Consider Figure 5 . 7 . Suppose there is another router w , connected to router y and z . The
P Consider Figure Suppose there is another router w connected to routery and z The costs of all links are given as follows: cxy cxzcyw czw cyz Suppose that poisoned reverse is used inthe distancevector routing algorithm.PROBLEMS
a When the distance vector routing is stabilized, router w y and z inform their
distances to x to each other. What distance values do they tell each other?
b Now suppose that the link cost between x and y increases to Will there be
a counttoinfinity problem even if poisoned reverse is used? Why or why not?
If there is a counttoinfinity problem, then how many iterations are needed for
the distancevector routing to reach a stable state again? Justify your answer.
c How do you modify cyz such that t
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