H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 3 OSPF Configuration
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Chapter 3 OSPF Configuration
Open Shortest Path First (OSPF) is a link state interior gateway protocol developed by
the OSPF working group of the Internet Engineering Task Force (IETF). At present,
OSPF version 2 (RFC2328) is used.
When configuring OSPF, go to these sections for information you are interested in:
z Introduction to OSPF
z OSPF Configuration Task List
z Configuring OSPF Basic Functions
z Configuring OSPF Area Parameters
z Configuring OSPF Network Types
z Configuring OSPF Route Control
z Configuring OSPF Network Optimization
z Displaying and Maintaining OSPF
z OSPF Configuration Examples
z Troubleshooting OSPF Configuration
 Note:
The term “router” in this document refers to a router in a generic sense or an Layer 3
Ethernet switch running routing protocols.
3.1 Introduction to OSPF
 Note:
Unless otherwise noted, OSPF refers to OSPFv2 throughout this document.
OSPF has the following features:
z Wide scope: Supports networks of various sizes and up to several hundred routers
in an OSPF routing domain.
z Fast convergence: Transmits updates instantly after network topology changes for
routing information synchronization in the AS.
z Loop-free: Computes routes with the shortest path first (SPF) algorithm according
to the collected link states, so no route loops are generated.