January 5, 2021

This document uses these configurations. ip unnumbered Ethernet2/0/0 router ospf 1 network area 0. Redistribution Configuration Syntax and Examples. IGRP and EIGRP. OSPF. RIP. Redistributing Static Routes Except Gateway of Last resort in. This article describes some basic OSPF configuration.

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For a single-area OSPFv3 network, include the ospf3 statement at the [edit protocols] hierarchy level.

Because R1 connects only to R2, we only need to establish a neighbor relationship with R2 and advertise directly connected subnet into OSPF. Confirm your configuration by entering the show protocols ospf command.

Example: Configuring a Single-Area OSPF Network – TechLibrary – Juniper Networks

Configure the router identifiers for the devices in your OSPF network. To verify if the routing updated were exchanged, we can use the show ip route command. The network commands entered on both routers include subnets directly connected to both routers.

We can verify that by using the show ip ospf neighbor command:. All other networks or areas in the AS must be directly connected to the backbone area by area border routers that have interfaces in more than one area.

To confirm your OSPFv3 configuration, enter the show protocols ospf3 command. To do that, the following configuration on R1 will be used:. Our goal is to advertise the subnets directly connected to R1 and R3. First, we need to enable OSPF on both routers.


Configure the device interfaces.

Configuration du routage ospf – routeur Cisco

To verify if directly connected subnets are really advertised into the different area, we can use the show ip route ospf command on both R1 and R In this configuraion we have two OSPF areas — area 0 and area 1. R3 is in the area 1. NOTE We have used the router-id 1.

As you can see from the network topology depicted above, routers R1 and R3 are in the area 0 and area 1, respectively. To do that, we need to specify different area ID for each neighbor relationship, 0 for R1 and 1 for R2. You must also create a backbone area if your network consists of multiple areas.

For example, here is the output of the command on R Now R2 should have neighbor relationship with both R1 and R3. This can be done by using the following sequence of commands on both routers:. Next, you need to configutation on which interfaces OSPF will run and what networks will be advertised.

Configuration du routage ospf – routeur Cisco

Home About Contact Support our work. We can do that using the following sequence of commands:. Area IDs are unique numeric identifiers, in dotted decimal notation.


OSPF basic configuration is very simple. To quickly configure a single-area OSPF network, copy the following commands, paste them into a text file, remove any line breaks, change any details necessary to match your network configuration, copy and paste the commands into the CLI at the [edit] hierarchy level, and then enter commit from configuration mode. Then we need to define what network will be advertised into OSPF.

Example: Configuring a Single-Area OSPF Network

We can verify that the routers have become neighbors by typing the show ip ospf neighbors command on either router:. In an autonomous system ASthe backbone area is always assigned area ID 0. We will use the following network topology:.

Jan 26, upravnik. Configuration of R3 looks similar, but with one difference, namely area number. If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration. Area IDs need only be unique within an AS. Confirm that the Area field displays the value that you configured.

Characters IA in front of the routes indicate that these routes reside in different areas.