OSPF Complete Implementation

The implementation described and examined in this book is written in C++ and designed with porting in mind. The book details the software architecture of the implementation and describes in-depth key OSPF functions, illustrated by numerous code samples. It also includes a guide to porting OSPF software to different environments, with an explanation of the software layer between the OSPF implementation and the operating system. In addition, two sample ports are included - a routing daemon for Linux and an OSPF routing simulator for Linux and Windows. Key topics covered include: * Implementation architecture, including I/O, data flow, and data structures * Porting considerations, including handling different types of CPU chips * AVL trees, Patricia trees, priority queues, timers, and logging messages * The IP routing table * Link-state database, including aging LSAs * Neighbor discovery and the neighbor state machine * Synchronization of link-state databases through the flooding algorithm * Hierarchy * Routing calculations, including intra-area, inter-area, and external routes * An implementation of the Multicast Extensions to OSPF (MOSPF) * Configuration and monitoring, including cr