Alcatel Carrier Internetworking Solutions 060187-10 REV D manual Configuring Ospf, This Chapter

1 Configuring OSPF

Open Shortest Path First routing (OSPF) is a shortest path first (SPF), or link state, protocol. OSPF is an interior gateway protocol (IGP) that distributes routing information between routers in a single Autono- mous System (AS). OSPF chooses the least-cost path as the best path. OSPF is suitable for complex networks with large numbers of routers since it provides faster convergence where multiple flows to a single destination can be forwarded on one or more interfaces simultaneously.

In This Chapter

This chapter describes the basic components of OSPF and how to configure them through the Command Line Interface (CLI). CLI commands are used in the configuration examples; for more details about the syntax of commands, see the OmniSwitch CLI Reference Guide.

Configuration procedures described in this chapter include:

•Loading and enabling OSPF. See “Activating OSPF” on page 1-17.

•Creating OSPF areas. See “Creating an Area” on page 1-18.

•Creating OSPF interfaces. See “Creating OSPF Interfaces” on page 1-22.

•Creating virtual links. See “Creating Virtual Links” on page 1-25

•Using redistribution policies and filters. See “Enabling Redistribution” on page 1-26

For information on creating and managing VLANs, see “Configuring VLANs” in the OmniSwitch 6600 Family Network Configuration Guide.

OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005 page 1-1