CCNA Portable Command Guide

This chapter provides information and commands concerning the following Open Shortest Path First (OSPF) topics:

• Configuring single-area OSPF (mandatory commands)

• Using wildcard masks with OSPF areas

• Configuring single-area OSPF (optional commands), regarding

  - Loopback interfaces

  - DR/BDR election priority

  - Cost metrics

  - Authentication

  - Timers

  - Propagating a default route

• Verifying OSPF

• Troubleshooting OSPF