February 1998
Intermediate to advanced
368 pages
10h 7m
English
Content preview from OSPF: Anatomy of an Internet Routing ProtocolBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 6. Hierarchical Routing in OSPF
Hierarchical routing is a technique commonly used when building large networks. As a network grows, so do the resource requirements for the network’s management and control functions. In a TCP/IP network, resource consumption includes
Router memory consumed by routing tables and other routing protocol data. In an OSPF network, this other data would include the OSPF link-state database.
Router computing resources, used in calculating routing tables and other routing protocol functions. In an OSPF network, these resources include the CPU required to calculate shortest-path trees.
Link bandwidth, used in distributing routing data. In an OSPF network, this includes the bandwidth consumed by OSPF’s database synchronization ...
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