RFC 2008:Implications of Various Address Allocatio...
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subnet


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... hierarchical routing in the Public Internet, where subnets, subscribers, and finally providers are some possible levels in the hierarchy. For example, a router ...
... host in that site. Instead, the router maintains routing information on a per subnet basis. Likewise, a router within a provider ...
... provider need not keep detailed routing information about individual subnets within its subscribers. Instead, the router could maintain ...



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