Alcatel Carrier Internetworking Solutions 060187-10 REV D manual Configuring Router Capabilities

Page 39

Configuring OSPF

Configuring OSPF

 

 

 

 

Configuring Router Capabilities

The following list shows various commands that can be useful in tailoring a router’s performance capabili- ties. All of the listed parameters have defaults that are acceptable for running an OSPF network.

ip ospf exit-overflow-intervalSets the overflow interval value. The overflow interval is the time

 

whereby the router will wait before attempting to leave the database

 

overflow state.

ip ospf extlsdb-limit

Sets a limit to the number of external Link State Databases entries

 

learned by the router. An external LSDB entry is created when the

 

router learns a link address that exists outside of its Autonomous System

 

(AS).

ip ospf host

Creates and deletes an OSPF entry for directly attached hosts.

ip ospf mtu-checking

Enables or disables the use of Maximum Transfer Unit (MTU) checking

 

on received OSPF database description packets.

ip ospf route-tag

Configures a tag value for Autonomous System External (ASE) routes

 

created.

ip ospf spf-timer

Configures timers for Shortest Path First (SPF) calculation.

To configure a router parameter, enter the parameter at the CLI prompt with the new value or required variables. For example to set the exit overflow interval to 40, enter:

-> ip ospf exit-overflow-interval 40

To enable MTU checking, enter:

-> ip ospf mtu-checking

To set the route tag to 5, enter:

-> ip ospf route-tag 5

To set the SPF timer delay to 3 and the hold time to 6, enter:

-> ip ospf spf-timer delay 3 hold 6

To return a parameter to its default setting, enter the command with no parameter value, as shown:

-> ip ospf spf-timer

OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005

page 1-29

Image 39
Contents OmniSwitch 6600 Family Advanced Routing Configuration Guide Page Contents Alcatel INTERNETWORKING, INC. AII Unsupported Platforms Supported PlatformsWho Should Read this Manual? When Should I Read this Manual?What is in this Manual? What is Not in 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 Related Documentation OmniSwitch 6600 Family Getting Started GuideTechnical Support This Chapter Configuring OspfOspf Specifications Parameter Description Command Default Value/Comments Ospf Defaults TableOspf Quick Steps Router ID Area Type = normal Admin Status = Enabled Operational Status = UpAdmin Status = Enabled Show ip ospf area Area IdentifierOspf Hello Protocol Ospf OverviewOspf Intra-Area and Inter-Area Routing Ospf AreasClassification of Routers Ospf Routers Connected with a Virtual Link Virtual LinksOspf Stub Area Stub AreasTotally Stubby Area Example Not-So-Stubby-AreasMultiple Equal Cost Paths Graceful Restart on Stacks with Redundant SwitchesEqual Cost Multi-Path Ecmp Routing Non Broadcast Ospf RoutingOspf Graceful Restart Helping and Restarting Router Example Configuring Ospf Preparing the Network for Ospf Removing Ospf from Memory Activating OspfLoading the Software Enabling OspfSpecifying an Area Type Creating an Ospf AreaCreating an Area Enabling an AreaEnabling and Disabling Summarization Displaying Area StatusDeleting an Area No ip ospf area 1.1.1.1 default-metric Configuring Stub Area Default MetricsSetting Area Ranges Configuring a Totally Stubby AreaEnter the following commands on Router B Activating an Interface Creating Ospf InterfacesCreating an Interface Assigning an Interface to an AreaInterface Authentication Simple AuthenticationMD5 Encryption Ip ospf interface 120.5.80.1 dead-interval Modifying Interface ParametersIp ospf interface 120.5.80.1 dead-interval 50 cost Ip ospf interface 120.5.80.1 hello-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 Filter Creating a Redistribution PolicyNo ip ospf redist-filter rip 1.1.0.0 Show ip ospf redist-filterShow ip ospf redist-filter rip Show 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 No ip ospf restart-support Ip ospf restart-support planned-onlyThree Area Ospf Network Ospf Application ExamplePrepare the Routers Ospf Application ExampleConfiguring Ospf Router Enable OspfOspf Application Example Examine the Network Verifying Ospf Configuration Alcatel License Agreement Software License and Copyright StatementsAlcatel 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 Sun Microsystems, Inc Apptitude, IncAgranat RSA Security IncNetwork Time Protocol Version Wind River Systems, IncIndex Index