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4.2. AS external routes Connected: An Internet Encyclopedia
4.2. AS external routes

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4.2. AS external routes

4.2. AS external routes

Routers that have information regarding other Autonomous Systems can flood this information throughout the AS. This external routing information is distributed verbatim to every participating router. There is one exception: external routing information is not flooded into "stub" areas (see Section 3.6).

To utilize external routing information, the path to all routers advertising external information must be known throughout the AS (excepting the stub areas). For that reason, the locations of these AS boundary routers are summarized by the (non-stub) area border routers.

Next: 4.3. Routing protocol packets

Connected: An Internet Encyclopedia
4.2. AS external routes


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