Ospf network type nbma nonbroadcast multiple access uses only unicast communications, so it is the preferred way of ospf configuration in situations where multicast addressing is not possible or desirable for some reasons. This branch network is running ospf, and ospf automatically redistributes its learned intraarea and interarea routes to the vsmart controller. Chapter 10 configuring ospf this chapter describes how to configure ospf on the hp procurve 9304m, 9308m, and 6308msx routing switches using the cli and web management interface. To configure a netowork for ospf properly there are some steps. According to network diagram, routers r3 is in the area 0. Ospfs functionality is different across several different network topology types. Because loopback interfaces are virtual interfaces, you need to use the peer connectinterface command to specify the loopback interface as the source interface for establishing bgp connections. To understand bgp border gateway protocol better, we will make a basic packet tracer bgp configuration example. Ospf provides essential defaults for basic protocol operability. Ospf typically requires coordination among many internal routers, area.
Ospfs interaction with frame relay will be explained in another section broadcast multiaccess indicates a topology where broadcast occurs. All routes marked with the character o are ospf routes. This time, well take a look how you can configure multi area ospf. Configuration example largescale distributed enterprise with bovpn virtual interfaces and ospf author. Fireware configuration examples give you the information you need to configure your watchguard firebox device to meet specific business needs. The network shown in figure 59 will be used for this section. Acording to my basic ip plan, i used the below ips for my interfaces. Note to take advantage of the ospf stub area support, default routing. First you need to specify the area 1 where we need the virtuallink which is area 1 in my example. In the following example, the output for the show ip ospf and show ip ospf database nssa commands shows an open shortest path first notsostubby area ospf nssa area where rfc 3101 is disabled, rfc 1587 is active, and an nssa area border router abr device is configured as a forced nssa lsa translator. Verify the neighbor relationships on r1 by viewing the neighbor table. To do that, the following configuration on r1 will be used if the output does not display the intended configuration, repeat the instructions in this example to correct the configuration.
The task is to optimize ospf routing, which creates the need to design and configure multiarea ospf. Configure some basic ospf routing scenarios page 7 configuring ospf on a network you will see in the show ip route outputs above that the routes are prefixed with codes like c, o, o e2, etc. While a lot a theory was covered in that section, this one looks at configuring ospf. The graphic shows the output of the show ip ospf interface e0 command for routers r1 and r2. A number of different cisco ios ospf configuration commands are available, but at its most basic, ospf configuration uses three commands. Looking for free ccna study guide or ccna tutorials or do not have money to get expensive ccna online training, you are at right place. Because of the limited numbers of commands available on packet tracer, we will practice a very basic configuration for our bgp config example.
Ospf commands area nssa p1r232 network protocols command reference, part 1 area nssa to configure an area as a not so stubby area nssa, use the area nssa command in router configuration mode. The requirement is that the igp protocol ospf is publishing the routing information for all these loopbacks addresses in the ospf domain. A network administrator is troubleshooting the ospf configuration of routers r1 and r2. Rip protocol configuration guide with examples rip is the simplest and one of the oldest distance vector routing protocol. Router4 connects to both areas that is area 0 and area 2, which makes him an area border router, while router5 is in area 2 router r3 and r5 configuration are same as we learn in above single area configuration lab but configurations. Ospf with multiarea adjacency configuration example cisco. Configuration planning is essential to organize routers, backbone, nonbackbone, stub, nssa areas, and transit links. We are showing the output of these two commands for r2 here. You can see that r1 has learned about the network 192. We also include a guide to cover the details of each configuration. Ospf open shortest path first protocol is a wellknow routing protocol that is widely used today.
Configure the serial interfaces connecting r1, r2, r4 and r5 to the hubandspoke frame relay topology as an ospf pointtomultipoint network type. Entering ospf configuration mode enter commands one line at a time. In this article we will see how to configure ospf step by step. To do this, as a better network engineering rule, firstly make your ip plan or, use the existing one. The configuration of ospf in a large scale implementation can be a bit hard to follow when quickly looking over a configuration, but if the network engineer knows the base ospf concepts and sits down with the configuration then they should be able to figure out the intention of the ospf design. When a link state router begins operating on a network link, information associated with that logical network is added to its local link state database lsdb. Basic ospf configuration for internal router abr and. To prevent route flapping caused by port state changes, this example uses loopback interfaces to establish ibgp connections. Link state routing protocols advertise the state of their links. Please note that an interface can only exist in one area. How to configure ospf routing protocol using packet tracer.
Although basic ospf configuration can be very simple, ospf provides many extra features that can get really complex. Route learning codes further examples of altering the metric applied to. Above we have r1 and r2 in area 0, the backbone area. We talked about ospf basics and made an ospf configuration for beginners on our course. We also want to advertise ospf external routes to the vsmart controller. Jul 26, 2017 start by entering ospf configuration mode. Configuration routage ospf pdf this document uses these configurations. Next, you need to define on which interfaces ospf will run and what networks will be advertised. This tutorial explains how to configure ospf routing protocol step by step with practical example in packet tracer.
The example script shows the commands used to configure the switch with ospf enabled on port 102 for communication with the interarea router in the ospf backbone, and on ports 103 and 104 for communication with subnets within area 0. Ospf s functionality is different across several different network topology types. Bovpnvirtualinterfaceloadbalancingwith ospf exampleconfigurationfilescreatedwithwsm v11. In the ospf virtual link lesson, i explained how to configure a virtual link, but i didnt show how to enable virtual link authentication. To remove the nssa distinction from the area, use the no form of this command. Ospf s interaction with frame relay will be explained in another section broadcast multiaccess indicates a topology where broadcast occurs. In our example, we will examine the figure below deeply. The router ospf processid command is the beginning of any cisco ios ospf configuration.
Enter the router ospf command and follow by the processid. Create one loopback interface in both routers and configure ip address. Here is the configuration to enable md5 authentication. Keep this in mindyou need to configure the ospf router id and not the ip address of the abr. Configuring multiarea ospf objective in this lab configure a multiarea ospf operation, interarea summarization, external route summarization, and default routing. Basic ospf configuration examples 33 basic ospf configuration for internal router for abr and asbrs example 34 complex internal router with abr and asbrs example 34 complex ospf configuration for abr examples 37 examples route map 38 example changing ospf administrative distance 40 example ospf over ondemand routing 41 example. Learn how to enable and configure rip routing in cisco router with practical example in packet tracer. In my introduction on ospf i explained why we sometimes use multiple areas for ospf and in our configuration example, i showed you how to configure ospf for a single area. The configuration examples were performed on devices running panos 4. Jun 28, 2017 it is time to take a look to configuring ospf open shortest path first with an ospf configuration example. How to configure ospf on cisco asa firewall example with. Now it is time to go deep and combine virtual link, lsa types and etc.
Just two routers in the same area, nothing special. Home downloads download cisco ccnp routing pdf study guide. To display ospf configuration information and statistics, see displaying ospf information on page 1029. Beside this, i will add some additional cofiguration steps that is needed for. How to configure ospf routing protocol using cisco packet. Apr 25, 2015 the router ospf command enables ospf routing on the router, and the 1 before osfp is the process id of the osfp protocol. Simple ospf configuration hello, the first thing you have to check is the topology database on your router this is the first step for any ospf troubleshooting can you give a show ip ospf database and see if the entry is there. This ccna study guide explains each ccna topic in detail with examples in separate ccna tutorial.
In the previous section you learned about ospf and how it works. Second step is to configure the ospf router id of the other abr. For basic ospf configuration, the followin scenario will be a good example. We want to enable eigrp only on the subnet connected to the interface fa00. P1c106 network protocols configuration guide, part 1. P1c108 network protocols configuration guide, part 1. Here is the configuration for r3 interface ethernet01 ip address 192. Basic ospf configuration guide network startup resource center. Bgp configuration packet tracer bgp config example. Quagga a routing software package for tcpip networks quagga 1.
For example, here is the output of the command on r1. Throughout the document, our configurations will relate to the simple ospf network diagram in example ospf network diagram on page 4. Router 1 should be a asbr which redistributes the static routes. For packet tracer bgp configuration, firstly we need to configure the ip addresses of interfaces as other examples. Once you are in the router ospf configuration submode, configure the lan network 172. Ospf basic configuration ospf basic configuration pearson. Ospf can be used for serviceside routing, to provide reachability to networks at the local site, and it can be used for transportside routing, to enable communication between the vedge router and other viptela devices when the router is not directly connected to the wan cloud. Configure ospf in two routers and check adjacency state, routing table and lsdb. The routers cannot establish an adjacency relationship on their common ethernet link. It is time to take a look to configuring ospf open shortest path first with an ospf configuration example.
Open shortest path first open shortest path first ospf is an openstandard link state routing protocol. Neighbor id pri state dead time address interface 202. This document describes ip unicast routing configurations supported by the switch, including the principle and configuration procedures of ip routing overview, static route, rip, ripng, ospf, ospfv3, isisipv4, isisipv6, bgp, routing policy,and pbr, and provides configuration examples. We configure the virtuallink between abrs and we use the area virtuallink command. In a previous lesson i demonstrated how to configure plain text authentication for ospf. Learn ospf configuration commands, ospf show commands, ospf network configuration process id, network id, wild card mask and area number and ospf. Routebased sitetosite vpn to azure bgp over ikev2ipsec routebased redundant sitetosite vpn to azure bgp over ikev2ipsec ipv6 high availability walkthrough. To quickly configure a singlearea 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. Just like eigrp, ospf configuration is divided into two parts the global configuration and the interface level configuration. This command is executed in router configuration mode of rip, eigrp or ospf to configure the routing process to redistribute routes from a different source into the configured routing process such as static into rip or rip into ospf. Configuring route summarization when redistributing routes into ospf 23. Based on the information in the graphic, what is the cause of this problem.
Verify the network type configuration change by viewing the ospf parameters of the serial interface. This document provides an example ospf network diagram and describes some of the main configuration parameters for ospf using the alliedware. Routing configuration example viptela documentation. Jul 14, 2019 configuration routage ospf pdf this document uses these configurations. You can configure or modify most commands and parameters. Fireware configuration example bovpn virtual interface load. In this lesson ill explain the basics of ospf to you and you will learn how and why it works.
The following table lists the differences between ospf and eigrp. An area border router abr must have at least one interface in the backbone area, or it must have a virtual link to a router in the backbone area. To display ospf configuration information and statistics, see displaying ospf information on. Learn ospf configuration commands, ospf show commands, ospf network configuration process id, network id, wild card mask and area number and ospf routing in detail. The ospf network command uses a combination of networkaddress and wildcardmask. The minimal ospf parameters that are necessary to deploy ospf are. The router ospf command enables ospf routing on the router, and the 1 before osfp is the process id of the osfp protocol. In this example we have two ospf areas that is area 0 and area 2. The combined use of ospf and bgp allows for a divide and conquer approach. Enter the configure terminal command to enter global configuration mode. Ospf commands area range p1r235 network protocols command reference, part 1 examples the following example specifies one summary route to be advertised by the abr to other areas for all subnets on network 10. You can also use show ip ospf interface brief and show ip ospf neighbor commands on r2 andor r3. The idea is the same but some of the commands are different.