Nov 02, 2005 frame relay is an industrystandard, switched data link layer protocol that handles multiple virtual circuits using highlevel data link control hdlc encapsulation between connected devices. Read the wikipedia article to learn more about frame relay. How to configure framerelay pointtomultipoint this time well take a look at the configuration of framerelay pointtomultipoint. It is used to establish connection between frame relay switch and client router. A pvc is the logical path along an originating frame relay link, through the network, and along a terminating frame relay link to its ultimate destination. We will use figure 2 and table 2 in this section for reference. How to configure a cisco router as a frame relay switch. As part of the big lab i am doing i want to do some work with frame relay. Frame relay subinterfaces can be configured in either pointtopoint or. The supported protocols with the corresponding keywords to enable them are as follows ip ip. In a subinterface configuration, each vc can be configured as a pointtopoint connection. Frame relay, cisco ios release 15s americas headquarters cisco systems, inc. Thus, in general, framerelay is less expensive than dedicated wan lines, but customers are not guaranteed bandwidth.
Our network in this example is configured as illustrated in the figure below. Local management interface lmi message is used to check the status between frame relay dte and dce. The frame relay labs, unlike any of the other labs in exploration 4, have two dce links on the same router. Frame relay is a layer two protocol that connects networks over long distances. This guide walks through how to configure frame relay on cisco routers. A packetswitching protocol for connecting devices on a wide area network wan. Frame relay allows for a single serial interface on the router to connect multiple remote sites with the help of virtual circuits. The frame relay forum takes no position with respect to any claim that has been made or. Use the encapsulation framerelay interface configuration command to enable frame relay encapsulation. The diagram below of an hdlc frame may be familiar, since without adding specific definitions of how the address, control and crc is used, the diagram is applicable to ibms sdlc, to x. Most telephone companies now provide frame relay service for customers who want connections at.
The following figure illustrates a frame relay frame ansi t1. Setting the protocol mtu with frame relay encapsulation. Framerelay point to multipoint topology as you have already seen we will configure r1 interface as multipoint but r2 and r3 as pointtopoint. Frame relay ppp vlans trunking vtp nat pat acl ospf static routing duration. Data is sent in hdlc packets, referred to as frames. Remove the previous configuration from r1s serial00 interface and create a pointtomultipoint subinterface and configure it with the correct framerelay maps. Each frame relay subinterface is mapped with the dlci number of the corresponding circuit configured in the packet tracer wan emulation cloud. The basic configuration of frame relay is simple, but the network administrator plans the. 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. Frame relay is one of the most popular wan service deployed over the past decade. Endtoend mfr configuration is transparent to the frame relay switching equipment.
Frame relay is an industrystandard, switched data link layer protocol that handles multiple virtual circuits using highlevel data link control hdlc encapsulation between connected devices. In this first example, the local management interface lmitype defaults to cisco lmi on spicey. If the ietf keyword is not specified, this command defaults to using ciscos encapsulation, which is a fourbyte header, with two bytes for the dlci and two bytes to identify the packet type. They are locally significant and they identify themselvesto the frame relay cloud so it knows where they. How to configure frame relay on cisco router technig. Configuring a pointtomultipoint frame relay wan free. What is local management interface lmi in frame relay. Frame relay software configuration guide and command reference, release 4. In many cases, frame relay is more efficient than x. Having looked at both frame relay concepts and an example of the communication process, lets take a look at configuring a cisco router to use frame relay. The only piece of information needed is the dlci, which will be used to send all data onto that pointtopoint subinterface. Figure 118 is an example of such a diagram, with the global dlcis shown. Configuring frame relay feature history release modification forinformationaboutfeaturesupportinciscoios software,useciscofeaturenavigator.
By publication of this frame relay implementation agreement the frame relay forum. Aug 12, 2019 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. Frame relay frame relay is a highperformance wan protocol that operates at the physical and data link layers of the osi reference model. The frame relay is the packet switched network as well as it may compare with the x. The same hub and spoke topology is used, only the frame relay switch router configuration is explained here refer the previous article for the hub router and spoke. You can also try this on live routers and other network simulators, but the frame relay switch configuration varies.
The cloud is the frame providers network, and the customer has no control or even. Frame relay configuration with examples icnd2 200105. Dec 18, 2011 the previous article on configuring frame relay on cisco packet tracer explains it on a simulator, in this article ill show how a cisco router can be used as a frame relay switch. Scenario your isp has provisioned frame relay pvcs for the international travel agency wan. Frame relay is a scalable wide area network solution which makes use of packetmode transmission. From the html or pdf version of the manual, copy a configuration example. Frame relay is a widearea network with the following features. As the administrator, you are responsible for configuring frame relay among regional offices. You can verify the configuration using the show frame relay pvc command. Jul 06, 20 frame relay ppp vlans trunking vtp nat pat acl ospf static routing duration. Frame relay point to multipoint topology as you have already seen we will configure r1 interface as multipoint but r2 and r3 as pointtopoint. Hub and spoke remote sites are connected to a central site that generally provides a service or application.
In figure 33, spans frame relay network uses permanent virtual circuits pvc. This allows each subinterface to act similarly to a leased line. In frame relay implementation, the connection between a dte router device and a dce frame relay switch device consists of both a physical layer component and a link layer component. Oct 14, 20 as part of the big lab i am doing i want to do some work with frame relay. Verify the framerelay map statements using the show framerelay map command. Frame relay link can be configured for rates a low as 64k and up to full t1 or e1 rates. Before we get started with configuration,lets talk a little bit about what you see in front of you. Jun 07, 2019 the configuration is completed successfully. Frame relay is a synchronous hdlc protocol based network.
Frame relay is the ideal technology to establish lantolan connections and distributed clientserver networks. 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. How to configure frame relay in cisco packet tracer. The ip addresses will be assigned to each subinterface. Pdf establishing frame relay connections using packet tracer. This tutorial explains how to configure frame relay step by step. Local management interface lmi, a technology developed by cisco, is a signaling standard that is used between the routers and frame relay. 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. We will utilize the physical interface for frame relay configuration and as previously mentioned the physical interface is a multipoint interface which can terminate more than one vc. Use the encapsulation frame relay interface configuration command to enable frame relay encapsulation. Originally designed for transport across integrated services digital network isdn infrastructure, it may be used today in the context of many other network interfaces. So with iou i want a frame relay connecting to four other routers in a hub and spoke topology. Compare this to the physical path used by a dedicated connection.
Since you are working your way to becoming the ultimate networking guru, you are prepared to do a full frame. Use the show frame relay pvc command to verify that frame relay is configured correctly. Frame relay providers allow customers to buy a lower amount of bandwidth than what they really use. Although frame relay is popular due to its relatively inexpensive nature, it is being replaced in many areas by. This document provides a basic configuration example for configuring frame relay over a. The previous article on configuring frame relay on cisco packet tracer explains it on a simulator, in this article ill show how a cisco router can be used as a frame relay switch. C o n t e n t s widearea networking overview 1 finding feature information 1 frame relay 1 frame relay atm internetworking 4 switched multimegabit data service 4 link access procedure balanced and x. Novell ipxipxthis command is not required if you are using inverse arp. 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. Frame relay frame relay is a packet switching technology that fragmented into transmission units called frames and sent in highspeed bursts through a digital network. This is a completely different solution than the first frame relay configuration example i showed you in which all devices were in the same ip subnet.
This command is executed in serial interface configuration mode to configure the pointtopoint framerelay interface dlci assigned to the interface. Dec 04, 2011 this article will explain frame relay configuration in cisco packet tracer. Be sure to change your cabling to reflect the topology diagram. Just look at the topology right now and not the config, just get an idea of whats happening here on hq. Nothing too exciting at the moment, but i do want to touch on it. Actually, such subinterfaces do not allow the framerelay map command. 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. Since you are working your way to becoming the ultimate networking guru, you are prepared to do a full framerelay config.
This article will explain frame relay configuration in cisco packet tracer. Comprehensive guide to configuring and troubleshooting. Frame relay interfaces can be entered as either a pointtopoint or as a multipoint configuration. So to assist you, below we will discuss one of the more difficult ccna concepts. Frame relay software configuration guide and command. In fact, you can think of frame relay as a way of utilizing existing t1 and t3 lines owned by a service provider. In preparation of your ccna exam, we want to make sure we cover the various concepts that we could see on your cisco ccna exam. It includes a bibliography and a set of www sites with information on frame relay networks. The configuration for the open shortest path first ospf protocol can be greatly simplified by adding the optional broadcast keyword when doing this task.
The physical component defines the mechanical and electrical specifications for the connection between the devices. Notice that the pvc between chicago and toronto is a pointtopoint interface. 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. Now, as you can see, all these dlcis that are surroundingthe routers, remember those are data link connection identifiers. In case of any problem regarding to fram relay configuration on cisco devices, ask your question through. A frame relay interface exists over a physical interface in a onetoone rela. Basic concepts of frame relay explained in easy language. As a ccna candidate you are familiar with the concept of framerelay, although you do not need to configure the framerelay switch. Once you have reliable connections to the local frame relay switch at both ends of the permanent virtual circuit pvc, then it is time to start planning the frame relay configuration. All locations plug into the frame relay cloud, which is a conglomeration of dozens or hundreds of framerelay switches and routers. Ce protocole est utilise par les fournisseurs dacces pour transmettre des signauxvocaux et numeriques entre reseaux locaux par lintermediaire dun reseau etendu.
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. The basic frame protocol, which is used in the frame relay is hdlc and the typical speed is higher than the x. Establishes an exclusive connection during the transmission period called virtual connection. Using a frame relay pointtopoint subinterface, each pair of the pointtopoint routers is on its own subnet. See the framerelay map description in the communication server. 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. Applications include sending xrays from a small hospital to a university specialist, layouts to a printer, financial data from one brokerage firm to another or inventory reorders to plants and suppliers. Use the show framerelay pvc command to verify that frame relay is configured correctly.
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