CCNA Portable Command Guide, Second Edition

Chapter 10. Single Area OSPF

This chapter provides information and commands concerning the following topics:

• Configuring OSPF: Mandatory commands
• Using wildcard masks with OSPF areas
• Configuring OSPF: Optional commands

  —Loopback interfaces

  —Router ID

  —DR/BDR elections

  —Modifying cost metrics

  —Authentication: Simple

  —Authentication: Using MD5 encryption

  —Timers

  —Propagating a default route

• Verifying OSPF configuration
• Troubleshooting OSPF
• Configuration example: Single area OSPF

Configuring OSPF: Mandatory Commands

Using Wildcard Masks with OSPF Areas

When compared to an IP address, a wildcard mask identifies which addresses get matched for ...