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Router with Fast Convergence: LSA Correlation

Technology Application

Routers play an essential role in the operation of Internet. Internet-related devices are constantly on the rise with close to 1.7 billion Internet users worldwide. These numbers represent a 380% increase in growth in the past decade. The global router market is projected to reach $15.9 billion by 2015. In 2008, North America dominated the revenues in the global market for service provider and enterprise routers followed by Europe and Asia-Pacific. As the number of Internet users and Internet-enabled applications continues to increase, it is now critical to achieve quick convergence to changes in the network topology without overloading routers. LSA correlation technology will be of great advantage to wide area networks that use OSPF and IS-IS protocols. Both Enterprise and Internet Service Provider routing systems can benefit greatly from this novel method of fast convergence.

Detailed Technology Description

Dr. Mukul Goyal has devised a new method, called LSA Correlation, to achieve fast convergence to the topology changes in open-shortest-path first (OSPF) and intermediate-system-to-intermediate-system (ISIS) networks with a minimum number of routing table calculations. This method allows a router to correlate the received Link State Advertisements (LSAs) to identify the topology change that led to their generation. The router performs a routing table calculation once the topology change has been identified.

Country/Region

USA

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