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 5. OSPF Network Types
Until now, we have addressed how the OSPF protocol runs in network topologies consisting of routers interconnected with serial lines. Such topologies are where link-state protocols were originally developed (namely, the ARPANET network), and they demonstrate all the basic elements of a link-state protocol. The bulk of the routing literature also concentrates on point-to-point network topologies.
However, the Internet contains many other subnet (that is, data-link) technologies, all capable of joining more than two routers to a single medium: Ethernets, 802.5 Token Rings, FDDI rings, Frame Relay subnets, ATM, SMDS, packet radio, and so on. OSPF runs over these subnet technologies, although somewhat differently from ...
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