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Module 3: OSPF

3.1 Review of OSPF Fundamentals and Features
3.1.1 Link-State Routing Protocols
3.1.2 Overview of OSPF Operations
3.1.3 OSPF Data Structures
3.1.4 OSPF Adjacency Database
3.1.5 OSPF Area Structure
3.1.6 OSPF Router Types
3.1.7 OSPF Terminology
3.1.8 Calculation the OSPF Metric
3.1.9 Link-State Data Structure
3.2 Review of OSPF Operation
3.2.1 OSPF Packet Types
3.2.2 OSPF Packet Header Format
3.2.3 Establishing OSPF Neighbor Adjacencies
3.2.4 Exchanging and Synchronizing LSDBs
3.2.5 Discovering the Network Routes
3.2.6 Maintaining Network Routes
3.2.7 Maintaining Link-State Sequence Numbers
3.2.8 Verifying Packet Flow
3.3 Implementing and Verifying OSPF
3.3.1 Configuring Basic Single-Area and Multiarea OSPF
3.3.2 Configuring Basic Single-Area OSPF Example
3.3.3 Configuring Basic Multiarea OSPF Example
3.3.4 Configuring a Router ID
3.3.5 Verifying the OSPF Router ID
3.3.6 Verifying the OSPF Operation
3.3.7 Example of the show ip route ospf Command
3.3.8 Example of the show ip ospf interface Command
3.3.9 Example of the show ip ospf neighbor Command
3.3.10 clear and debug Commands
3.4 OSPF Network Types
3.4.1 OSPF Network Types
3.4.2 Adjacency Behavior for a Point-to-Point Link
3.4.3 Adjacency Behavior for a Broadcast Link
3.4.4 Selecting the DR and BDR
3.4.5 Adjacency Behavior for a NBMA Network
3.4.6 DR Election in NBMA Topology
3.4.7 OSPF Over Frame Relay
3.4.8 OSPF over NBMA Topology Modes
3.5 Implementing OSPF in an NBMA Network
3.5.1 Configuring the OSPF Network Type
3.5.2 Configuring OSPF over Frame Relay
3.5.3 Using the neighbor Command
3.5.4 The show ip ospf neighbor Command
3.5.5 Point-to-Multipoint Configuration
3.5.6 Point-to-Multipoint Nonbroadcast Configuration
3.5.7 Using Subinterfaces in OSPF over a Frame Relay Configuration
3.5.8 Configuring a Point-to-Point Subinterface
3.5.9 Configuring a Multipoint Subinterface
3.5.10 OSPF over NBMA Topology Summary
3.5.11 Tracking OSPF Adjacencies
3.6 Multiarea OSPF Operation
3.6.1 Large OSPF Network Issues
3.6.2 OSPF LSA Types
3.6.3 OSPF LSA Types (cont.)
3.6.4 Interpreting the OSPF LSDB and Routing Table
3.6.5 Interpreting the Routing Table
3.6.6 Calculating Costs for E1 and E2 Routes
3.6.7 Configuring OSPF LSDB Overload Protection
3.6.8 Changing the Cost Metric
3.7 Stub, Totally Stubby, and Not-So-Stubby Areas
3.7.1 Configuring OSPF Area Types
3.7.2 Using Stub and Totally Stubby Areas
3.7.3 Configuring Stub Area
3.7.4 OSPF Stub Area Configuration Example
3.7.5 Configuring Totally Stub Areas
3.7.6 Totally Stubby Area Configuration Example
3.7.7 Interpreting Routing Tables
3.7.8 Configuring Not-So-Stubby Areas
3.7.9 Configuring Not-So-Stubby Area Example
3.7.10 Configuring an NSSA Totally Stubby Area Example
3.7.11 Verifying All Stub Area Types
3.8 Virtual Links
3.8.1 OSPF Virtual Links
3.8.2 Configuring Virtual Links
3.8.3 Virtual Link Configuration Example
3.8.4 Verifying a Virtual Link Configuration
3.9 Route Summarization
3.9.1 ABR and ASBR Implementation
3.9.2 OSPF Route Summarization Example
3.9.3 Configuring OSPF Route Summarization
3.9.4 Configuring Route Summarization at ABR
3.9.5 Configuring Route Summarization at ASBR
3.9.6 Benefits of a Default Route in OSPF
3.9.7 Configuring a Default Route in OSPF
3.9.8 Example of Configuring a Default Route in OSPF
3.10 OSPF Authentication
3.10.1 OSPF Authentication Methods
3.10.2 Configuring Simple Password Authentication
3.10.3 Example of Configuring Simple Password Authentication
3.10.4 Configuring MD5 Authentication
3.10.5 Example of Configuring MD5 Authentication
3.10.6 Troubleshooting Simple Password Authentication
3.10.7 Troubleshooting MD5 Authentication
3.11 OSPF Lab Exercises
3.11.1 Lab 3-1 Single-Area OSPF Link Costs and Interface Priorities
3.11.2 Lab 3-2 Multiple-Area OSPF with Stub Areas and Authentication
3.11.3 Lab 3-3 OSPF Virtual Links and Area Summarization
3.11.4 Lab 3-4 OSPF over Frame Relay
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