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Routing Information Protocol was defined in 1988, but the
protocol had been in use prior to that date. RIP uses hop count as
its metric. In the days when links were relatively homogeneous, hop
count was an acceptable metric. In recent years, with the advent of
widely used WAN links with a varying degree of bandwidth, RIP is
less desirable. For instance, if a router could get to a specific
network in two different ways and one of those ways was a T1 and the
other was a 19200 link, RIP would have no way to distinguish between
these two ways if the hop count was the same. |
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