Cisco Systems OL-4580-01 manual OSPF Overview, Areas, Stub Area

Contents

C H A P T E R 3	Configuring Open Shortest Path First (OSPF) 3-1
	OSPF Overview 3-2
	OSPF Routing Hierarchy	3-3
	Autonomous System	3-4
	Areas 3-4
	Backbone Area 3-4
	Area Border Routers	3-5
	Stub Area 3-5

Autonomous System Boundary Routers		3-5
Link-State Databases 3-6
CSS OSPF Configuration Quick Start	3-7
Global OSPF Configuration Quick Start 3-7
OSPF IP Interface Configuration Quick Start		3-9
Verifying Your Configuration 3-11
Configuring OSPF on the CSS 3-12
Configuring the OSPF Router ID	3-12
Enabling OSPF 3-13
Configuring an Area 3-13
Removing an Area 3-14
Configuring Equal-Cost Routes	3-14
Configuring Summarized Routes at an ABR		3-14

Configuring the CSS as an Autonomous System Boundary Router 3-15

Advertising a Route as an OSPF ASE Route 3-16

Advertising a Default ASE Route 3-20

Advertising Other Routes Through OSPF 3-21

Configuring OSPF on a CSS IP Interface 3-22

Configuring the CSS IP Interface as an OSPF Interface 3-23

	Assigning an OSPF Area to the Interface	3-24
	Enabling OSPF on the Interface 3-24
	Configuring the Interface Attributes 3-24
	Cisco Content Services Switch Routing and Bridging Configuration Guide
vi		OL-4580-01