Frame relay is one of the most popular wan service deployed over the past decade. In this lesson well take a look at framerelay pointtopoint which is far easier to configure. Jan 24, 2018 example frame relay multipoint subinterface with dynamic addressing. Frame relay is a scalable wide area network solution which makes use of packetmode transmission. Disable frame relay inverse arp and make sure to configure the correct frame relay mappings. Sep 14, 2011 configure all routers to use frame relay encapsulation. In previous lessons i gave an introduction about framerelay and explained how to configure framerelay pointtomultipoint. The configuration of multipoint interfaces is slightly different, and is the reason why i included both types in this example. Mar 14, 2007 on a frame relay network, virtual circuits are identified using what are known as data link connection identifiers dlcis. Oct 14, 20 as part of the big lab i am doing i want to do some work with frame relay. Inverse arp will map the remote ip addresses to the correct dlci. Note that by default split horizon rule is in effect on interfaces and eigrp traffic between r2 lan and r3 lan would not be advertisted if we will not disable this rule on r1 s00.
Hub will not relay broadcasts from one spoke to another. How to configure frame relay on cisco router technig. Consider figure 2, a company lets say abc has purchased frame relay wan service from a provider to connect three of its offices. Even though several advanced technologies such as vpn, atm are available today, frame relay still rocks and will be in near future due to its features, benefits and lower cost in comparison with other point to point wan services. Configuring frame pointtopoint subinterfaces you can configure multiple point to point subinterfaces using a single physical frame frame circuit. Frame relay is a protocol used for connecting devices on a wide area network. Frame relay configuration with examples icnd2 200105. Frame relay user guide for routing devices techlibrary. The figure below shows the basic frame relay configuration on a cisco router, connected directly to a dedicated frame relay switch, or dce. As mentioned previously frame relay is nonbroadcast multiaccess media, which means that there must be a mechanism for layer 3 to layer 2 resolution.
In the topology below, router r1 has two pointtopoint subinterfaces. Jun 07, 2019 open the frame relay lab which you have downloaded and configure frame relay the same as screenshot. Mar 24, 2012 for the love of physics walter lewin may 16, 2011 duration. All router interface had been configured with ip addresses and routing protocol ripv2. This type of configuration can be used between hub and spoke sites where you would want to keep the spokes in their own layer 3 subnets. On serial0 of frame relay switch add the following dlci and named with router name or anything you want. Configuring frame relay feature history release modification forinformationaboutfeaturesupportinciscoios software,useciscofeaturenavigator. Configuring a framerelay switch is outside the scope of the ccna, ccnp and even the ccie exam.
Nothing too exciting at the moment, but i do want to touch on it. In this lab we will try to run a frame relay topology same as the one posted in tshoot demo ticket. Dlci numbers are issued by the service provider and uniquely identify a virtual circuit. The frame relay is the packet switched network as well as it may compare with the x. Dlci to ip address mappings are not configured on pointtopoint frame relay interfaces, since only one other possible communication endpoint exists on the virtual circuit. Frame relay frame relay is a highperformance wan protocol that operates at the physical and data link layers of the osi reference model.
This is the way the frame relay code works in cisco ios software. If you are interested, have a look at this link, which describes how to build a compound frame relay switch, by using cisco 2500 routers. Verify the framerelay map statements using the show framerelay map command. It operates at the data link layer providing a connectionoriented network. Configure the ip addresses as specified in the topology picture on pointto multipoint subinterfaces. Thus, if the frame relay switch is configured correctly, the frame relay interfacedlci command could theoretically be removed, and the frame relay connection will still work. So with iou i want a frame relay connecting to four other routers in a hub and spoke topology. To meet your criteria a static framerelay statement will need to be placed under each interface using the same dlci 100 pointing to the local ip address of the physical interface. In frame relay the layer 2 addresses are called dlci. A dlci is a 10bit number that is stored in the header of a frame that traverses a frame relay network. There are circumstances when dlcis should be manually assigned. The basic frame protocol, which is used in the frame relay is hdlc and the typical speed is higher than the x.
Frame relay is a highperformance wan protocol that operates at the physical and data link layers of the osi reference model. Eigrp over framerelay multipoint physical interface gns3. Pdf establishing frame relay connections using packet tracer. Mikkel is talking about a particular aspect of multipoint frame relay interfaces. For the love of physics walter lewin may 16, 2011 duration. This tutorial explains how to configure frame relay step by step.
Dec 10, 2012 frame relay multipoint configuration produced by. Frame relay says, hey, i want to do something with frame relay, it demands the encapsulation frame relay command to be on. As a ccna candidate you are familiar with the concept of framerelay, although you do not need to configure the framerelay switch. How to setup frame relay multipoint or static map jared. Mappings need to be provided statically for spoke to spoke reachability due to hub not relaying inversearp icmp redirect messages are sent by the hub when both incoming and outgoing interface is the same when spokes communicate with spokes broadcasts are not sent beyond the hub router.
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. Frame relay is a layer 2 technology just like ethernet is a layer 2 technology. Configuring framerelay multipoint subinterfaces youtube. In next listings you see configuration for routers. Frame relay point to multipoint topology as you have already seen we will configure r1 interface as multipoint but r2 and r3 as pointtopoint. If you use gns3 you can use the simpletoconfigure framerelay switch emulator. Although frame relay is popular due to its relatively inexpensive nature, it is being replaced in many areas by. The following example configures two multipoint subinterfaces for dynamic address resolution. Ce protocole est utilise par les fournisseurs dacces pour transmettre des signauxvocaux et numeriques entre reseaux locaux par lintermediaire dun reseau etendu. Since you are working your way to becoming the ultimate networking guru, you are prepared to do a full framerelay config. So we do frame relay map ip, frame relay map ip, lets talk about that for structure.
Configuring pointtopoint frame relay subinterfaces free. Ospf point to multipoint over frame relay get networking. Similarly like ethernet frame relay needs to have layer 2 addresses. Configuring a pointtomultipoint frame relay wan free ccna. Lmi is a protocol language that delivers a list of dlcis between routers. Enarsi training frame relay pointtopoint subinterface. Ensure you can ping both routers from router cinderella. Each subinterface is provided with an individual protocol address and subnet mask, and the frame relay interfacedlci command associates the subinterface with a specified dlci. Jameel alsulami 415 waleed alharbi 421 network and systems administration 7 this is our project in as 2.