Protection of transit links in a network

Details Protection of transit links in a network Protection of transit links in a network

2007-09-26

2010-10-26

Abelson, Ronald (Department: 2476)

Multiplex communications

Network configuration determination

Using a particular learning algorithm or technique

C370S230100, C370S231000, C370S235000

Reexamination Certificate

active

07821970

ABSTRACT:
A router identifies transit links and non-transit links. Only the non-transit links are advertised as routes to adjacent routers, thereby protecting the transit links from edge traffic which terminates on a network on one of the transit links. In another aspect of the invention, an administrative whitelist supplements the routes which identify the transit link network routes. In another aspect of the invention, a method for advertising routes identifies entries in a router table as broadcast or point-to-point. Only the router table entries for point-to-point links which are not transit or broadcast links that are not for a neighboring router are advertised, whereas the point-to-point transit links or broadcast transit links are advertised as transit links if an administrative whitelist is enabled.

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