Connected: An Internet Encyclopedia
Exterior Routing
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Exterior Routing

Exterior Routing Exterior routing occurs between autonomous systems, and is of concern to service providers and other large or complex networks. The basic routable element is the Autonomous System, a collection of CIDR prefixes identified by an Autonomous System number. While there may be many different interior routing scheme, a single exterior routing system manages the global Internet, based primarily on the BGP-4 exterior routing protocol.

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Connected: An Internet Encyclopedia
Exterior Routing