Alcatel Carrier Internetworking Solutions 060187-10 REV D manual Ospf Application Example

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OSPF Application Example	Configuring OSPF

OSPF Application Example

This section will demonstrate how to set up a simple OSPF network. It uses three routers, each with an area. Each router uses three VLANs. A backbone connects all the routers. This section will demonstrate how to set it up by explaining the necessary commands for each router.

The following diagram is a simple OSPF network. It will be created by the steps listed on the following pages.

VLAN 10

Interface 10.0.0.1

Area 0.0.0.1

Router 1

Router ID 1.1.1.1

VLAN 12	VLAN 31
Interface 12.x.x.x	Interface 31.x.x.x

Backbone Area

(Area 0.0.0.0)

VLAN 23

Interface 23.x.x.x

	Area 0.0.0.2	Area 0.0.0.3
	Router 2	Area 0.0.0.3
	Router 2	Router 3
	Router ID 20.0.0.1	Router 3
	Router ID 20.0.0.1	Router ID 3.3.3.3
		Router ID 3.3.3.3
	VLAN 20	VLAN 30
	Interface 20.0.0.1	Interface 30.0.0.1

Three Area OSPF Network

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OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005

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Contents OmniSwitch 6600 Family Advanced Routing Configuration Guide Page Contents Alcatel INTERNETWORKING, INC. AII Supported Platforms Unsupported PlatformsWhat is Not in this Manual? When Should I Read this Manual?What is in this Manual? Who Should Read this Manual?Stage 1 Using the Switch for the First Time How is the Information Organized?Documentation Roadmap Stage 2 Gaining Familiarity with Basic Switch Functions Stage 3 Integrating the Switch Into a NetworkAnytime OmniSwitch 6600 Family Getting Started Guide Related DocumentationTechnical Support Configuring Ospf This ChapterOspf Specifications Ospf Defaults Table Parameter Description Command Default Value/CommentsOspf Quick Steps Router ID Show ip ospf area Area Identifier Admin Status = Enabled Operational Status = UpAdmin Status = Enabled Area Type = normalOspf Overview Ospf Hello ProtocolOspf Areas Ospf Intra-Area and Inter-Area RoutingClassification of Routers Virtual Links Ospf Routers Connected with a Virtual LinkStub Areas Ospf Stub AreaNot-So-Stubby-Areas Totally Stubby Area ExampleNon Broadcast Ospf Routing Graceful Restart on Stacks with Redundant SwitchesEqual Cost Multi-Path Ecmp Routing Multiple Equal Cost PathsOspf Graceful Restart Helping and Restarting Router Example Configuring Ospf Preparing the Network for Ospf Enabling Ospf Activating OspfLoading the Software Removing Ospf from MemoryEnabling an Area Creating an Ospf AreaCreating an Area Specifying an Area TypeEnabling and Disabling Summarization Displaying Area StatusDeleting an Area Configuring a Totally Stubby Area Configuring Stub Area Default MetricsSetting Area Ranges No ip ospf area 1.1.1.1 default-metricEnter the following commands on Router B Assigning an Interface to an Area Creating Ospf InterfacesCreating an Interface Activating an InterfaceInterface Authentication Simple AuthenticationMD5 Encryption Ip ospf interface 120.5.80.1 hello-interval Modifying Interface ParametersIp ospf interface 120.5.80.1 dead-interval 50 cost Ip ospf interface 120.5.80.1 dead-intervalCreating Virtual Links Creating a Virtual LinkModifying Virtual Link Parameters Creating Redistribution Policies and Filters Specifying an Autonomous System Boundary RouterEnabling Redistribution Creating a Redistribution Policy Creating a Redistribution FilterShow ip ospf redist-filter rip 1.1.0.0 Show ip ospf redist-filterShow ip ospf redist-filter rip No ip ospf redist-filter rip 1.1.0.0Configuring Router Capabilities Configuring Static Neighbors Ip ospf interface 1.1.1.1 type non-broadcastIp ospf neighbor 1.1.1.8 eligible Ip ospf restart-support planned-only No ip ospf restart-supportOspf Application Example Three Area Ospf NetworkPrepare the Routers Ospf Application ExampleConfiguring Ospf Enable Ospf RouterOspf Application Example Examine the Network Verifying Ospf Configuration Software License and Copyright Statements Alcatel License AgreementAlcatel License Agreement Software License and Copyright Statements Booting and Debugging Non-Proprietary Software Third Party Licenses and NoticesOpenLDAP Public License Version 2.4, 8 December Linux GNU General Public License Version 2, JunePreamble Third Party Licenses and Notices Software License and Copyright Statements Third Party Licenses and Notices Appendix How to Apply These Terms to Your New Programs University of California Carnegie-Mellon UniversityRandom.c RSA Security Inc Apptitude, IncAgranat Sun Microsystems, IncWind River Systems, Inc Network Time Protocol VersionIndex Index