Telematics Chapter 6: Network Layer - Freie Universität Berlin

Open Shortest Path First (OSPF)
● Open Shortest Path First (OSPF)
● 1990 standardized by IETF (RFC 1247)
● Current versions:
● OSPF version 2 (RFC 2328) for IPv4
● OSPF version 3 (RFC 5340) with IPv6 support
● Open protocol (not manufacturer specific)
● Supports a multiplicity of metrics (distance, delay, etc.)
● Dynamic algorithm for fast adjustment to changing conditions in the network
● Load sharing between redundant links
● Supports hierarchical systems
● Contains security mechanisms to protect routers from wrong routing information
or attacks
● Three types of connections are supported:
● Point-to-point links between routers
● Broadcast networks (mostly LANs)
● Multi-access networks without broadcasting (e.g. packet switching WANs)
Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 6: Network Layer
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