These labs are dedicated to understanding and configuring ospf. In multi area ospfv3, all areas are connected to the backbone area area 0 through area border routers abrs. Jan 20, 2018 the following is a sample output from the show ip ospf 2 multi area command. All routers in the area need to agree they are stub, so that they do not generate types of lsa not. The following is a sample output from the show ip ospf 2 multi area command. When configuring multiarea ospf, it is imperative to remember that all areas must be connected to the ospf backbone area, which is area 0. Scenario international travel agency ita maintains a complex ospf environment. Overview in lab 6 we discussed rip, which is the canonical example of a routing protocol built on the distancevector algorithm. First of all, we will configure the routers interfaces. Cable a network according to the topology diagram erase the startup configuration and reload a router to the default state perform basic configuration tasks on a router configure and activate interfaces configure ospf. Ospf is an open standard protocol, you learn more why we use ospf and ospf quiz from here. Ccnpv7 route lab32 multiareaospf instructor documents. The information in the powerpoint explains much of the information and output in this lab. Ccnpv7 route lab43 redistribution eigrp for ipv6 and.
For example facility one is ospf area 1, facility 2 is ospf area two, this gives you the ability to isolate network problems to a sitefacility level. Ospf adheres to the following link state characteristics. Ospf configuration in packet tracer lab with pdf networking. Lab configuring multiarea ospfv2 topology addressing table. In this lab we will learn to configure multi area ospf using cisco packet tracer. After ospf is enabled, tune the update timers and configure authentication. Basic ospf configuration lab learning objectives upon completion of this lab, you will be able to.
You may expect questions such as which routes are allowed by a particular ospf area or when will a router in an ospf nonbackbone area receive a default route from the abr. Oct 11, 2017 the objective of this lab exercise is for you to learn and understand how to enable ospf using more than one area. In multiarea ospf you still have to have a backbone area named area 0 but you can add additional networks in other areas. Free cisco lab packet tracer activity ospf multiarea. Within area 1, routers r1, r2, and r3 exchange intraarea routing information and maintain detailed topology for that area.
This lab will discuss and demonstrate the configuration and verification of multi area ospf. If youre looking for a free download links of 101 labs for the cisco ccna exam pdf, epub, docx and torrent then this site is not for you. So this tool was designed for free download documents from the internet. If you do some calculations, you will see that a mask of 20 will encompass all needed ranges. Multiarea ospf is useful in larger network deployments to reduce processing and memory overhead. Lab configuring multi area ospfv2 background scenario to make ospf more efficient and scalable, ospf supports hierarchical routing using the concept of areas. Multiarea ospfv3, as well as ppp and logging, is a core icnd2. Using multiarea ospfv3 in large ipv6 network deployments can reduce router processingcycles by creating smaller routing tables and requiring less memory overhead. The result is that routers will only share their entire link state databases with routers in there own area and other areas. If not then to summarize it all up for you in a pretty little nut shell. As a network engineer you are familiar with the concepts of ospf and singlearea implementations, however you never tried to create a multiarea ospf configuration.
Jul 07, 2014 ospf is a widely used protocol in campus, data center and even in service provider environments. 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. Apr 21, 2017 the solution is to use multi area ospf instead of single area ospf where every network is in area 0. Here we assume that all the interfaces including loopback interfaces, their speed, duplex and descriptions have been configured. The task is to optimize ospf routing, which creates the need to design and configure multiarea ospf. Figure 31 illustrates a basic multi area ospf network. R3, the abr, generates an interarea summary route and advertises this to the ospf backbone. If you are preparing for the ccnp route exam, you should have a good understanding of ospf area types and the reasons for creating an ospf network with multiple areas. Open shortest path first a routing protocol based on the linkstate algorithm objective the objective of this lab is to configure and analyze the performance of the open shortest path first ospf routing protocol. Ospf lab 1 we will configure a complex ospf backbone area consisting of four routers and a switch. Then configure the ospf process and enable ospf on the appropriate interfaces.
After that we will configure ospf as our routing protocol. Jul 27, 20 understand bbr, abr, asbr, and internal ospf router types. Ex eigrp external, o ospf, ia ospf inter area n1 ospf nssa external type 1, n2 ospf nssa external type 2 e1 ospf external type 1, e2 ospf external type 2, e egp i isis, l1 isis. This topology includes multiarea ospf with area 0 as the hq backbone for the enterprise network and other ospf areas or ripeigrp domains acting like remote branches. This is a basic labs regarding ospf single area configure. This time, well take a look how you can configure multi area ospf. Ospf open shortest path first ospf is a standardized linkstate routing protocol, designed to scale efficiently to support larger networks. The objective of this lab exercise is for you to configure ospfv3 on three routers using more than one area.
Create four new loopback interfaces on r1 using the 10. In below network topology diagram you can see there are two area area 0 and area 1. First assign ip address on each interfaces as show in above diagram. If you have trouble understanding ospf then you might find my ccna or ccnp book helpful. About us we believe everything in the internet must be free. 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. Lab configuring multiarea ospfv2 background scenario to make ospf more efficient and scalable, ospf supports hierarchical routing using the concept of areas. You have heard about different area types like stubby, not so stubby but never encountered them in real life. Transcript ccnpv7 route chapter 3 lab 32, multiarea. When configuring multi area ospf, it is imperative to remember that all areas must be connected to the ospf backbone area, which is area 0. You will also configure a server and 4 pc workstations and verify their connectivity. Configure all interfaces to run ospf in area 0 using the process id of 50 by.
Figure 31 illustrates a basic multiarea ospf network. The following is a sample output from the show ip ospf 2 multiarea command. This tutorial explains how to configure ospf routing protocol step by step with practical example in packet tracer. These routes should not increment their metric as they pass through the network and should have an initial ospf cost of 200. Then configure the ospf process and enable ospf on the. In this free ccna lab you will learn to configure ospf in multiple areas. The majority of the network setups use this protocol nowadays in favor of rip and sometimes eigrp due to it being a linkstate and open standard protocol. This ospf lab is created in packet tracer and you will learn the ospf single area configuration from this lab. How to configure multi area ospf lab in cisco packet tracer.
You will also learn to use the ospf election process to determine the designated router dr, backup designated router bdr, and drother states. How to configure multi area ospf lab in cisco packet. The objective of this lab exercise is for you to learn and understand how to enable ospf using more than one area. In multiarea ospfv3, all areas are connected to the backbone area area 0 through area border routers abrs. R3, the abr, generates an inter area summary route and advertises this to the ospf backbone. Ospf will form neighbor relationships with adjacent routers in the same area. In the second scenario, you will learn to configure ospf on a multiaccess network. Place each interface on your router into the area specified by the diagram. Now you have to configure ospf such that devices in area 0 can easily communicate with devices in area 1. Using multi area ospfv3 in large ipv6 network deployments can reduce router processingcycles by creating smaller routing tables and requiring less memory overhead.
R1 will act as an asbr by redistributing a series of static routes into theospf network. The lab consist of four separate labs each lab building on the previous ospf topology covering topic such as ospf backbone area, stubby, nssa not so stubby area, and totally stubby areas, virtual link areas, ospf over framerelay, and redistribution of external network into an ospf area. This report discusses about the ospf protocol, its. Setting priorities to influence the election of the dr. A serial interface can be connected to a multiaccess network such as frame relay. With its fast convergence and scalability, ospf is well suited for multivendor. Configuring multiarea ospf objective in this lab configure a multiarea ospf operation, interarea summarization, external route summarization, and default routing.
Within area 1, routers r1, r2, and r3 exchange intra area routing information and maintain detailed topology for that area. Ospf is a widely used protocol in campus, data center and even in service provider environments. Take a step back and look at it this way, designing a network using multiple areas gives you an easy network to troubleshoot when something blows up. Well look at router 9 as our example to complete this. Configuring multi area ospf objective in this lab configure a multiarea ospf operation, interarea summarization, external route summarization, and default routing. I pv6 ip address computer network internet protocols networking standards. Ccnpv7 route lab43 redistribution eigrp for ipv6 and ospfv3 student there is document ccnpv7 route lab43 redistribution eigrp for ipv6 and ospfv3 student available here for reading and downloading. Configuring basic ospf routing lab continued ospf objectives. Oct 15, 2016 how to allow two areas in ospf to connect ospf multi area configuration lab and commands duration. Basic ospf configuration lab is about networking and communications.
In this lab scenario you will configure ospf routing protocol across multiple ospf areas using ethernet and serial links connecting 6 routers and 5 switches. Network diagram objectives configure ospf for the above network diagram. Non broadcast multiaccess network performs better in case of a pointto. An ospf area is a group of routers that share the same linkstate information in their linkstate databases. Configuring multiple ospf areas free ccna workbook.
Above we have r1 and r2 in area 0, the backbone area. When a large ospf area is divided into smaller areas, it is called multiarea ospf. Transcript ccnpv7 route chapter 3 lab 32, multiarea ospfv2 and ospfv3 with stub area instructor versiontopologyobjectives configure multiarea ospfv2 for pv. The solution is to use multiarea ospf instead of single area ospf where every network is in area 0. How to allow two areas in ospf to connect ospf multi area configuration lab and commands duration. May 05, 2018 share ccnpv7 route lab32 multiareaospf. You will also you will learn to configure ospf on a multiaccess network.
First, configure loopback interfaces to provide stable ospf router ids. This lab coincides with my multiarea ospf lab handout, ricks ospf scenarios word doc most of the slides in this presentation do not come directly from ccnp 1 version 3. Lab setup for eigrp, ospf, path control the above diagram will be used for studying all eigrp, ospf and path control concepts in the ccnp route 642902 curriculum. Jan 05, 2018 ccna routing and switching scaling networks 6. An ospf area is a group of routers that share the same linkstate information in their linkstate databases lsdbs.
Ospf on the pointtopoint ethernet and nbma framerelay. Cable a network according to the topology diagram erase the startup configuration and reload a router to the default state perform basic configuration tasks on a router configure and activate interfaces configure ospf routing on all. As previously mentioned, multi area adj can be used in order to form multiple pointtopoint logical adjacencies over a single link. Refer to the next section in order to see the way in which multi area ospf adj works and how it can solve this issue at hand. Place loopback interfaces in whatever area makes the most sense. Download 101 labs for the cisco ccna exam pdf ebook. Its a repeat of the previous lab but with ppp and logging added to make it a little trickier. Chapter routing protocols rip, ospf, and bgp pdf created with fineprint pdffactory pro trial version. Now you have to configure ospf such that devices in area 0 can easily communicate with devices in area 1 step 1.
When it comes to building scalable ospf networks, you will commonly use multiple ospf areas. Use the download button below or simple online reader. You will configure ospf over a framerelay wan as well as over two other framerelay connections. Ccna lab manual router infotech, confidential document only for internal circulation page 2 lab. Areas 1 and 2 are connected to area 0, the ospf backbone. This lab has been designed as a cisco packet tracer activity but i have provided the topology for gns as well. Ospf employs a hierarchical network design using areas. Jun 21, 2010 as a network engineer you are familiar with the concepts of ospf and single area implementations, however you never tried to create a multi area ospf configuration.
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