Alcatel Carrier Internetworking Solutions 060187-10 REV D manual Preparing the Network for Ospf

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Configuring OSPF

Configuring OSPF

 

 

 

 

Preparing the Network for OSPF

OSPF operates on top of normal switch functions, using existing ports, virtual ports, VLANs, etc. The following network components should already be configured:

Configure VLANs that are to be used in the OSPF network. VLANS should be created for both the backbone interfaces and all other connected devices that will participate in the OSPF network. A VLAN should exist for each instance in which the backbone connects two routers. VLAN configura- tion is described in “Configuring VLANs,” in the OmniSwitch 6600 Family Network Configuration Guide.

Assign IP interfaces to the VLANs. IP interfaces, or router ports, must be assigned to the VLAN. Assigning IP interfaces is described in “Configuring VLANs,” in the OmniSwitch 6600 Family Network Configuration Guide.

Assign ports to the VLANs. The physical ports participating in the OSPF network must be assigned to the created VLANs. Assigning ports to a VLAN is described in “Assigning Ports to VLANs,” in the OmniSwitch 6600 Family Network Configuration Guide.

Set the router identification number. (optional) The routers participating in the OSPF network must be assigned a router identification number. This number can be any number, as long as it is in standard dotted decimal format (e.g., 1.1.1.1). Router identification number assignment is discussed in “Config- uring IP,” in the OmniSwitch 6600 Family Network Configuration Guide. If this is not done, the router identification number is automatically the primary interface address.

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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?Documentation Roadmap Stage 1 Using the Switch for the First TimeHow is the Information Organized? Anytime Stage 2 Gaining Familiarity with Basic Switch FunctionsStage 3 Integrating the Switch Into a Network 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 TypeDeleting an Area Enabling and Disabling SummarizationDisplaying Area Status 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 InterfaceMD5 Encryption Interface AuthenticationSimple Authentication 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-intervalModifying Virtual Link Parameters Creating Virtual LinksCreating a Virtual Link Enabling Redistribution Creating Redistribution Policies and FiltersSpecifying an Autonomous System Boundary Router 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 Ip ospf neighbor 1.1.1.8 eligible Configuring Static NeighborsIp ospf interface 1.1.1.1 type non-broadcast 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 OpenLDAP Public License Version 2.4, 8 December Booting and Debugging Non-Proprietary SoftwareThird Party Licenses and Notices Preamble LinuxGNU General Public License Version 2, June 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 Random.c University of CaliforniaCarnegie-Mellon University RSA Security Inc Apptitude, IncAgranat Sun Microsystems, IncWind River Systems, Inc Network Time Protocol VersionIndex Index