Alcatel Carrier Internetworking Solutions 060187-10 REV D - page 38

Configuring OSPF Configuring OSPF

page 1-28 OmniSwitch 6600 Family Advanced Routing Configuration Guide March 2005

In certain cases, redistribution can either be an adjacent route or a subnet. In these cases, the redistributed

route can correspond to several routes. It is possible to advertise these routes separately or not with the

redist-control keyword.

If it is desired to advertise only an aggregated route instead of all the routes to comprise the aggregate, use

the ip ospf redist-filter command with the redist-control aggregate keyword, as shown (you will also

need to enter the route information as above):

-> ip ospf redist-filter rip 1.1.0.0 255.255.0.0 redist-control aggregate

If it is desired that the subnet routes that fall within the aggregate range should not be advertised, use the

ip ospf redist-filter command with the redist-control keyword as shown (you will also need to enter the

route information as above):

-> ip ospf redist-filter rip 1.1.0.0 255.255.0.0 redist-control no-subnets

Note. By default, filters are set to allow subnet routes to be advertised. If this is the filter action desired, it

is not necessary to use the redist-control keyword.

A cost metric and route tag can be assigned to the routes that are allowed to pass through the filter, by

using the metric and route-tag keywords, as shown (these options are described in the ip ospf redist-

filter command):

-> ip ospf redist-filter rip 1.1.0.0 255.255.0.0 metric 100 route-tag 5

To display all of the configured filters on a router, enter the show ip ospf redist-filter command as shown:

-> show ip ospf redist-filter

To display the configured filters for a specific route or protocol type, enter the show command and the

route or protocol type:

-> show ip ospf redist-filter rip

To display a specific filter, enter the show command with the route or protocol type and the ip address and

mask, as demonstrated:

-> show ip ospf redist-filter rip 1.1.0.0 255.255.0.0

To delete a redistribution filter, enter the ip ospf redist-filter command with the route or protocol type and

its associated IP address and mask, as shown:

-> no ip ospf redist-filter rip 1.1.0.0 255.255.0.0

Contents

Main Page Contents Page About This Guide Supported Platforms Unsupported Platforms Who Should Read this Manual? When Should I Read this Manual? What is in this Manual? What is Not in this Manual? How is the Information Organized? Documentation Roadmap Stage 1: Using the Switch for the First Time Stage 2: Gaining Familiarity with Basic Switch Functions Stage 3: Integrating the Switch Into a Network Anytime Related Documentation User Manual CD Technical Support 1 Configuring OSPF In This Chapter OSPF Specifications OSPF Defaults Table Enables OSPF. Enables an area. Enables an interface. Sets the overflow interval value. OSPF Quick Steps 9Assign the OSPF interface to the area and the backbone using the ip ospf interface area command. For example: or 10Enable the OSPF interfaces using the ip ospf interface status command. For example: or 11You can now display the router OSPF settings by using the show ip ospf command. The output gener- 12You can display OSPF area settings using the show ip ospf area command. For example: 13You can display OSPF interface settings using the show ip ospf interface command. For example: OSPF Overview OSPF Areas Classification of Routers Virtual Links Stub Areas OSPF Stub Area Not-So-Stubby-Areas Totally Stubby Areas Equal Cost Multi-Path (ECMP) Routing Non Broadcast OSPF Routing Graceful Restart on Stacks with Redundant Switches Page Configuring OSPF Preparing the Network for OSPF Activating OSPF Loading the Software Enabling OSPF Removing OSPF from Memory Creating an OSPF Area Creating an Area Enabling an Area Specifying an Area Type Enabling and Disabling Summarization Displaying Area Status Deleting an Area Configuring Stub Area Default Metrics Setting Area Ranges Configuring a Totally Stubby Area 1Enter the following commands on Router B: 2Enter the following on Router A: Creating OSPF Interfaces Creating an Interface Assigning an Interface to an Area Activating an Interface Interface Authentication Modifying Interface Parameters belonging to this interface. Creating Virtual Links Creating a Virtual Link Modifying Virtual Link Parameters Creating Redistribution Policies and Filters Specifying an Autonomous System Boundary Router Enabling Redistribution Creating A Redistribution Policy Creating a Redistribution Filter Page Configuring Router Capabilities Configuring Static Neighbors Configuring Redundant Switches in a Stack for Graceful Restart OSPF Application Example Three Area OSPF Network Step 1: Prepare the Routers Page Step 2: Enable OSPF Step 3: Create and Enable the Areas and Backbone Step 4: Create, Enable, and Assign Interfaces Page Step 5: Examine the Network Verifying OSPF Configuration A Software License and Copyright Statements Alcatel License Agreement ALCATEL INTERNETWORKING, INC. (AII) SOFTWARE LICENSE AGREEMENT Page Page Third Party Licenses and Notices A.Booting and Debugging Non-Proprietary Software B. The OpenLDAP Public License: Version 2.4, 8 December 2000 C. Linux D. GNU GENERAL PUBLIC LICENSE: Version 2, June 1991 Preamble GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION Page Page Page Appendix: How to Apply These Terms to Your New Programs E. University of California F. Carnegie-Mellon University G.Random.c H.Apptitude, Inc. I. Agranat J. RSA Security Inc. K. Sun Microsystems, Inc. L. Wind River Systems, Inc. M.Network Time Protocol Version 4 Index A B D E O R S T V