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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Our goal is to advertise the subnets directly connected to R1 and R3.

This can be done by using the following sequence of commands on both routers:. Configure the router identifiers for the devices in your OSPF network. The network commands entered on both routers include subnets directly connected to both routers. To do that, the following configuration on R1 will be used:.

Configuration du routage ospf – routeur Cisco

To confirm your OSPFv3 configuration, enter the show protocols ospf3 command. Confirm that the Area field displays the value that you configured.

In an autonomous system ASthe backbone area is always assigned routagr ID 0. OSPF basic configuration is very simple. First, we need to enable OSPF on both routers. Jan 26, upravnik.

If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration. Home About Contact Support our work. R3 is in the area 1.


Configuration du routage ospf – routeur Cisco

We can verify that the routers have become neighbors by typing the show ip ospf neighbors command on either router:. Area IDs need only be unique within an AS. As you can see from the network topology depicted above, routers R1 and R3 are in the area 0 and area 1, respectively.

To verify if the routing updated were exchanged, we can use the show ip route command. 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 Confirm your configuration by entering the show protocols ospf command.

Next, you need to define on which interfaces OSPF will run and what networks will be advertised. Then we need to define what network will be advertised into OSPF. NOTE We have used the router-id 1.

For a single-area OSPFv3 network, include the ospf3 statement at the [edit protocols] hierarchy level. To do that, we routsge to specify different area ID for each neighbor relationship, 0 for R1 and 1 for R2.

For example, here is the output of the command on R You must also create a backbone area if your network consists of multiple areas. Now R2 should have neighbor relationship with both R1 and R3.

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.


We can verify that by using the show ip ospf neighbor command:. Characters IA in front of the routes indicate that these routes reside in different areas.

Configure the device interfaces. Area IDs are unique numeric identifiers, in dotted decimal notation. Because R1 connects only to R2, we only need to establish a neighbor relationship with R2 and advertise directly connected subnet into OSPF.

Example: Configuring a Single-Area OSPF Network

We will use the following network topology:. In this example we have two OSPF areas — area 0 and area 1. Configuration of R3 looks similar, but with one difference, namely area number. We can do that using the following sequence of commands:. 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.