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Special Edition Using TCP/IP, Second Edition by NIIT

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Introduction to Interior Gateway Protocols

Routing datagrams within an AS is a complex issue especially because different ASs need to route datagrams based on their individual capabilities and requirements. For example, certain ASs might need protocols that converge at a fast pace because online services, such as air reservation systems or news networks, are run on these ASs. On the other hand, certain ASs might not need fast converging routers. Moreover, networks contained within ASs might be designed with varying software and hardware configurations. The diversities inherent within an AS have necessitated multiple routing protocols that are commonly named IGP. Routing Information Protocol (RIP), Open Shortest Path First (OSPF), and Enhanced ...

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