On a multipoint subinterface, the framerelay interfacedlci dlci command or the framerelay map protocol protocoladdress dlci broadcast command in the subinterface configuration mode can be used to associate the multipoint subinterface with specific dlcis. Go to the interface configuration mode of the interface on which you want to create frame relay subinterfaces and enable frame relay encapsulation. Using frame relay pointtopoint subinterfaces cisco. But here, our configuration will not be pointtopoint only. Here, in multipoint framerelay configuration, we will use the same cisco 3600 series routers and a frame relay switch.
Configure frame relay encapsulation on all serial interfaces. This is the way the frame relay code works in cisco ios software. Configure fr switch as a frame relay switch and create a pvc between r1 and. Lets assume that we have a frame relay topology like in the picture below. Having said that lets have some fun with framerelay. Routers will be connecting to the routers as multipoint. This could be due to a residual or incorrect configuration on the frame relay switch. Using a frame relay pointtopoint subinterface, each pair of the pointtopoint routers is on its own subnet. We can verify the configuration of the frsw with show framerelay route command.
This lab will discuss and demonstrate the configuration and verification of multi point frame relay interfaces. R1, r2, and r3 use multipoint subinterfaces, a full mesh of pvcs, and ipv4 addresses 192. Example frame relay multipoint subinterface with dynamic addressing 64. Read the wikipedia article to learn more about frame relay. Pointtopoint is the simplest form of framerelay configuration. Basic frame relay point topoint conf iguration on cisco. In addition to physical interfaces, you can also configure two types of logical interfaces for frame relay pointtopoint and multipoint. Frame relay multipointyou are the network administrator at ranet headquater, and have to configure the router ranethq to let host1connect with host2, host3 and host4 as below. On a frame relay multipoint network, the layer 2 to layer 3 is performed by the frame relay map command, not by arp. Enable and set ip address on lan interface to bethe first ip of this subnet. Ospf point to multipoint over frame relay get networking. The configuration will look similar to a pointtopoint interface with two exceptions.
Frame relay is a standardized wide area network technology that specifies the physical and data link layers of digital telecommunications channels using a packet switching methodology. Configuring frame relay subinterfaces cisco frame relay. Frame relay networks can be designed using star, fullmesh, and partialmesh topologies. The arizona office has entered the picture and moved this story to a hub and spoke design. Configuring frame relay feature history release modification forinformationaboutfeaturesupportinciscoios software,useciscofeaturenavigator. For routing traffic between devices will use eigrp routing protocol, we have used 2600 series routers and one frame relay switch. To demonstrate, how to configure different types of frame relay interface, i will use. For a multiaccess network like ethernet and frame relay, a dr designated router and a bdr backup designated router are elected.
These are provided typically by an isp, however if you are studying for your ccna exam a foundation knowledge of how these work is required. In case of any problem regarding to fram relay configuration on cisco devices, ask your question through. In this lesson well take a look at frame relay pointtopoint which is far easier to configure. A network where all sites are connected with each others via direct link.
Frame relay subinterfaces can be configured in either pointtopoint or multipoint mode. In the same way, it helps to learn how to configure and verify a ppp along with the pap and chap authentication, and ppoe. Lets first verify our configuration, then get into things. An interface is by default a multipoint interface so, frame relay inversearp is on for pointtopoint, there is no inverse arp. Having said that lets have some fun with frame relay. Frame relay is a layer 2 wan protocol that cand be configured on physical serial links. Also please notice that there is no ip address configured on the frame relay switch.
But in frame relay networks that assumption may not be true. How to configure frame relay in cisco packet tracer. In this lab, you will configure frame relay encapsulation on serial links. If you are using a frame relay switch to configure point to multipoint interfaces, then you use one physical interface with multiple subinterfaces. If you have no idea what framerelay is or what a pvc, dlci or lmi is you should start with my introduction to framerelay first. Example frame relay multipoint subinterface with dynamic addressing 68. In this lab youll learn how to configure multiple frame relay pointtopoint subinterfaces terminated by a single multipoint interface at a central office. We will use figure 2 and table 2 in this section for reference. Frame relay mulipoint, configuration, verifcation, troublshooting, download pdf file, router, frame relay switch, interface, serial, ip, shutdown, cable,isp. Framerelay multipoint configuration best cisco ccna. You can go through the basic configuration and verification of the point to point protocol ppp. When it comes to the hub and spoke topology, the hub is most commonly deployed with a pointtomultipoint interface. Configuring a pointtomultipoint frame relay wan free.
Comprehensive guide to configuring and troubleshooting. In this lab we will setup a frame relay point to multipoint topology on cisco routers by using gns3. Frame relay interfaces can be entered as either a pointtopoint or as a multipoint configuration. And he is correct that if you want to be able to ping your own interface, then you must manually configure a frame relay mapping of your own address to one of the dlcis on the interface. The basic configuration of frame relay is simple, but the network administrator plans the. Inverse arp will map the remote ip addresses to the correct dlci. How to configure, verify ppp and basic concepts of frame relay. Frame relay is a layer two protocol that connects networks over long distances. Multipointwhen a frame relay multipoint subinterface is configured. Configuring static address mapping on multipoint subinterfaces 51.
If you have no idea what frame relay is or what a pvc, dlci or lmi is you should start with my introduction to frame relay first. This article will explain frame relay configuration in cisco packet tracer. Frame relay multipoint config answers part 2 wendells. This tutorial explains how to configure frame relay step by step. Frame relay multipoint subinterface with dynamic addressing. Configuring frame relay that uses a multipoint interface. This allows each subinterface to act similarly to a leased line. This lab will discuss and demonstrate the configuration and verification of multipoint frame relay interfaces. Try to configure the router 1, 2 and 3 with static routing or rip routing in order to communicate with each others if your lab wont work correctly, download the configured frame relay lab which work perfectly and troubleshoot frame relay. This post looks at the configuration that uses framerelay map commands. Understanding and configuring frame relay inverse arp. Mikkel is talking about a particular aspect of multipoint frame relay interfaces. Create a topology as illustrate in following figure or download this precreated topology.
Ip split horizon checking is disabled by default for frame relay encapsulation, so routing updates come in and. Ospf neighbors are discovered using multicast hello packets. To understand the basic configuration of framerelay, there is a configuration below with three cisco 3600 series router and one framerelay. Frame relay topology frame relay is a nonbroadcast multiaccess nbma connection scheme. This means that although frame relay interfaces support multipoint connections by default, broadcast routing updates are not forwarded to remote sites. Originally designed for transport across integrated services digital network isdn infrastructure, it may be used today in the context of many other network interfaces. The main difference between pointtopoint and multipoint connection is that in a pointtopoint connection the link is only between two devices i. For the love of physics walter lewin may 16, 2011 duration. We will introduce you to some of the specifics of frame relay configuration for these different interface types. Disable frame relay invese arp on r1s serial00 interface and clear the frame relay inverse arp table using the clear framerelay inarp command then verify ip connectivity by pinging r2 and r3. Frame relay, cisco ios release 15s 16 configuring frame relay understanding frame relay subinterfaces.
In previous lessons i gave an introduction about frame relay and explained how to configure framerelay pointto multipoint. Is it possible to get the configuration of the labs in pdf format. The pointtopoint and multipoint are two types of line configuration. Local management interface lmi message is used to check the status between frame relay dte and dce. A multipoint subinterface can have multiple virtual circuits to multiple locations.
This time well take a look at the configuration of framerelay pointtomultipoint. Both of them describes a method to connect two or more communication devices in a link. As you know framerelay is a wellknown wan technology that generally used for backbone routers. Configure frame relay for the cisco ccna part 1 duration. How to configure frame relay on cisco router technig. We will utilize the physical interface for framerelay configuration and as previously mentioned the physical interface is a multipoint interface which can terminate more than one vc. Onewaytomakethisnetworkworkfullyistocreateafullymeshednetwork networkb,butdoingsorequiresalargenumberofpvcs,whichmaynotbeeconomicallyfeasible. This time well take a look at the configuration of framerelay pointto multipoint. Each frame relay subinterface is mapped with the dlci number of the corresponding circuit configured in the packet tracer wan emulation cloud.
Configuring frame relay dlcis techlibrary juniper networks. Configuring a pointtomultipoint frame relay wan free ccna. Which of the following statements is true concerning this command. Configure multipoint frame relay in cisco routers youtube. Now, the scenario has expanded with the addition of another office to the mix. In this lab youll learn how to configure multiple frame relay pointtopoint sub interfaces terminated by a single multipoint interface at a central office. Home ospfospf point to multipoint over frame relay. With multipoint interfaces where all devices are in a common subnet we tend to make some assumptions, such as the assumption that every device in the subnet can get directly to every other device in the subnet. Step 2 configure and create a pointtopoint or multipoint subinterface. Configuring a pointto multipoint frame relay wan when it comes to the hub and spoke topology, the hub is most commonly deployed with a pointto multipoint interface. Pointtopointwhen a frame relay pointtopoint subinterface is configured, the subinterface emulates a pointtopoint network and ospf treats it as a pointtopoint network type. Voice can be packetized to travel over a frame relay network, often providing significant cost savings with some sacrifice in voice quality, depending on network configuration. For example if the serial interface is s00, the pointtopoint subinterface will be s00.
Understanding frame relay dlcis, configuring a pointtopoint frame relay connection, configuring a pointto multipoint frame relay connection, configuring a multicastcapable frame relay connection. The deleted state is when the dte is configured for a dlci the switch does not. Basic multipoint frame relayconfiguration on cisco. Wilma wants you to change the configuration to use a multipoint subinterface. You can also try this on live routers and other network simulators, but the frame relay switch configuration varies.
In this first example, the local management interface lmitype defaults to cisco lmi on spicey. Nonbroadcast when ospf is run on a network, two important events occur before routing information is exchanged. Frame relay configuration isr router configuration frame relay hub router configuration r0 the hub router is configured with two subinterfaces to create a virtual circuit with each spoke. We want to have full ip connectivity between our labnario routers. Pdf establishing frame relay connections using packet tracer. This guide walks through how to configure frame relay on cisco routers. This command should be executed from the global configuration mode. Pdf frame relay is a protocol used for connecting devices on a wide area network.
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