User guide

OmniSwitch AOS Release 7 Advanced Routing Configuration Guide March 2015 page 1-1
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
Autonomous 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 AOS Release 7 CLI Reference Guide.
Configuration procedures described in this chapter include:
• Loading and enabling OSPF (see page 1-15).
• Creating OSPF areas (see page 1-16).
• Creating OSPF interfaces (see page 1-19).
• Creating virtual links (see page 1-22).
• Configuring redistribution using route maps (see page 1-22).
• Converting Local Interfaces into OSPF Passive Interface Using Route Map (see page 1-29).
For information on creating and managing VLANs, see “Configuring VLANs” in the OmniSwitch AOS
Release 7 Network Configuration Guide.