Setting up a 2620xm as a frame relay switch 25098 the. 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. By combining multiple physical interfaces into a bundle, you can design a frame relay interface that has. Lets look at a basic frame relay configuration with just two endpoints, headquarters and branch. You are working for a huge international car company as the senior network engineer. Frame relay switching is supported on the following interface types. Frame relay configuring a frame relay switch in gns3 duration. As the administrator, you are responsible for configuring frame relay among regional offices. Example 425 shows the sample configurations for the router configured as a frame relay switch. The basic configuration of frame relay is simple, but the network administrator plans the. This tutorial explains how to configure frame relay step by step.
Frame relay is one of the most popular wan service deployed over the past decade. If your verification procedure indicates that your frame relay configuration is not working properly, you need to troubleshoot the configuration. A serial connection, such as a t1e1 leased line, connects the router to the frame relay switch of the carrier at the nearest pointofpresence pop for the carrier. Scenario as the network engineer for international travel agency, prepare to deploy frame relay as the primary connectivity for the company wan. Configuring a pointtomultipoint frame relay wan when it comes to the hub and spoke topology, the hub is most commonly deployed with a pointtomultipoint interface. In the same way, it helps to learn how to configure and verify a ppp along with the pap and chap authentication, and ppoe. Frame relay can easily be configured to combine traffic from different. There could also be a virtual channel from user a to user c using the same physical link. Note frame relay switching is not supported on subinterfaces. Frame relay is a layer two protocol that connects networks over long distances. Frame relay switch, frame relay configuration and frad device.
Comprehensive guide to configuring and troubleshooting frame. Frame relay switch configuration packet tracer mohamed arafa. You will create permanent virtual circuits pvcs and assign data link connection identifiers dlcis. Frame relay switch configuration packet tracer youtube. Originally designed for transport across integrated services digital network isdn infrastructure, it may be used today in the context of many other network interfaces. This article will explain frame relay configuration in cisco packet tracer.
Frame relay, cisco ios release 15s 16 configuring frame relay understanding frame relay subinterfaces. A frame relay switch is required for configuring a frame relay network. Troubleshoot problems with framerelay circuits on your. The following steps are required to configure frame relay on the router. Configuring a cisco router as a frame relay switch cisco.
Jul 21, 2005 troubleshoot problems with frame relay circuits on your cisco router by david davis ccie in networking on july 21, 2005, 12. Recently the frame relay switch of one of your wan links died and you decided to replace it with a cisco router. Frame relay connections are created by configuring network routers or other devices to communicate with a service provider frame relay switch. Cisco frame relay configurations configuring frame relay. Note that cisco routers can be configured to operate similarly as a frame relay switch as well. First and foremost, we have to ensure that our addressing is correct. As the frames are transported across the provider, the framerelay switch will change the dlci values and when the frames are received the dlci value will not be the same as it was when the frame entered the framerelay network, hence the value of a dlci is of a local significance only. When carriers use frame relay to interconnect lans, a router on each lan is the dte. You can go through the basic configuration and verification of the point to point protocol ppp. In this first example, the local management interface lmitype defaults to cisco lmi on spicey. Troubleshoot problems with framerelay circuits on your cisco router by david davis ccie in networking on july 21, 2005, 12. Posted by rene molenaar july 14, 2010 in frame relay. While the frame relay standard specifies methods for setting up and maintaining both switched. Cisco router frame relay switch configuration point to.
Pdf establishing frame relay connections using packet tracer. Each frame relay protocol data unit pdu consists of the following fields. The sub interface id does not need to match the frame relay dlci, however i. The cloud is the frame providers network, and the customer has no control or even.
This will show you if the lmi packets are being sent and received properly. May 28, 2014 everything you need to know about frame relay for the ccna exam and also for the route exam. Normally you dont really have to think about the framerelay switch since this is something that the service provider will configure. It includes a bibliography and a set of www sites with information on frame relay networks. Configure router in gns3 as a frame relay switch duration. This command enables frame relay switching globally on the router, allowing it to forward frames based on the incoming dlci rather than on an ip address basis. 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. Jul 14, 2010 the configuration for multiple frame relay switches is the same as having one frame relay switch with routers connected to it. Next, execute the following commands to create a pointtopoint frame relay subinterfaces one for router2 and one for router3, assign an ip addresses, and specify the dlci numbers. Frame relay frame structure essentially mirrors almost exactly that defined for lapd. Pdf frame relay protocol please refer to the above diagram, which shows a configuration based on the frame relay protocol. Configuring frame relay feature history release modification forinformationaboutfeaturesupportinciscoios software,useciscofeaturenavigator. Lab setup instructions\cisco basic ccna lab setup instructions.
Although frame relay is popular due to its relatively inexpensive nature, it is being replaced in many areas by. Here is the output of show frame relay lmi command executed on r1. In case of any problem regarding to fram relay configuration on cisco devices, ask your question through. 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. Frame relay interface configuration subcommands 68. Congestion control in frame relay basic working mechanisms.
The cisco router behaving as a frame relay switch switches frame relay frames received from interface serial43 on dlci 403 to interface serial41 on the outgoing dlci to 304. In this lesson well take a look at framerelay pointtopoint which is far easier to configure. Different cisco ios software versions or releases may display slightly different outputs. You can configure multiple point to point subinterfaces using a single physical frame frame circuit. The frame relay switching command enables frame relay switching globally on a router, allowing it to forward frames based on the incoming dlci rather than an ip address. Configure a frame relay switch in part 2, you will configure a frame relay switch. Mar 25, 2015 frame relay is a packetswitching telecommunication service designed for costefficient data transmission for intermittent traffic between local area networks lans and between endpoints in wide area networks wans.
There are two tables used in frame relay configuration viz. Traffic analysis can distinguish frame relay format from lapd by its lack of a control field. The remaining configurations on the frame relay switch are specific to the interfaces. 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. There is a virtual channel between user a and user b. Dec 04, 2011 this article will explain frame relay configuration in cisco packet tracer. Frame relay, cisco ios release 15s 19 configuring frame relay.
This guide walks through how to configure frame relay on cisco routers. My question is how do i connect them physically back to back with a db60 dtedce cable to make them a. The configuration tasks will be fully explained in a later section. Cisco framerelay switch configuration frame relay requires a frame relay switch that switches one dlci to another, creating a virtual circuit. How to configure, verify ppp and basic concepts of frame relay. Since you are working your way to becoming the ultimate networking guru, you are prepared to do a full framerelay config. Read the wikipedia article to learn more about frame relay. Furthermore, it uses notification system for congestion not exclusively for the per virtual circuit. Remember that pvcs are only oneway circuits, and thus we need to create.
To simulate the frame relay wan connections, use a router with three serial ports to act as a frame relay switch. Nothing too exciting at the moment, but i do want to touch on it. Basic concepts of frame relay explained in easy language. The switching paths taken by the frames are based on the static frame relay route table. The switching table for the frame relay switch is shown in table. Interconnection between their switches and then a physical connection to user b. Configuring a pointtomultipoint frame relay wan free. A frame relay fr network is shown in the figure below. This lab will discuss and demonstrate the configuration and verification of multipoint frame relay interfaces.
Lmi provides status updates of virtual circuits between the frame switch and. These are provided typically by an isp, however if you are studying for your ccna. Routers a, b, and c are frame relay dtes connected to each other via a frame relay network. Next lesson how to configure framerelay pointtomultipoint. Jul 10, 2008 lets see how you can configure framerelay switch to use your in studies. The service, once widely available and implemented, is in the process of being discontinued by major internet service. The term virtual here means that the two dtes are not connected directly but through a.
Scenario your isp has provisioned frame relay pvcs for the international travel agency wan. This lab will discuss and demonstrate the frame relay point to point subinterface configuration and. 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. How to configure a cisco router as a frame relay switch. This command assign ip address in serial 000 of r1. An fr network may be considered as a fr cloud that consists of fr switches, and customer nodes. On each serial interface, configure the encapsulation to frame relay, define the interface as a frame relay dce, and set the clockrate. Related documents cisco ios widearea networking configuration guide, release 12.
Configuring a cisco router as a frame relay switch. Specifically it is switching between one dlci to another. Cisco routers can be configured as dedicated frame relay switches that act as dce devices. Frame relay configuration with examples icnd2 200105. When configuring bridging for the traffic between these sites, you would assign the ethernet interface and frame relay subinter faces to the same bridge group. Cisco the default, and proprietary, framerelay encapsulation ietf the standardized framerelay encapsulation. Pointtopoint is the simplest form of framerelay configuration. Framerelay local management interface lmi lmi is the type of signaling used between your router and your providers framerelay switch. Jun 07, 2019 the configuration is completed successfully. Adtran as the frame relay switch, the clock dce is provided for each serial link. May 26, 2016 first, to reduce the congestion control, frame relay only uses a single bit in its header. 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. May 08, 2016 frame relay switch configuration packet tracer mohamed arafa.
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. Figure 1527 illustrates how voice and data can be merged to more effectively utilize wan resources. A fr switch acts as dce and the customer equipment works as dte. This can be seen clearly by the encapsulation of type frame relay that is specified in the config. This command will change default encapsulation method to frame relay.
This command is executed in serial interface configuration mode to configure the pointtopoint framerelay interface dlci assigned to the interface. Frame relay terms and concepts 379 figure 152 frame relay terminology, part i frame relay components frame relay wan service comprises four primary functional components. Cisco framerelay switch configuration framerelay requires a framerelay switch that switches one dlci to another, creating a virtual circuit. The dlcis are both learned from the frame relay switch through lmi status messages sent from the switch to the router, and both are active which is the desired state. On a cisco router configured as a frame relay switch, frames from a frame relay pvc arriving on an incoming interface are switched to a frame relay pvc on outgoing interface. Frame relay switching enhancements supported platforms 5 cisco ios release 12. Use the debug framerelay lmi command to verify the operational status of the router and the frame relay switch. Oct 14, 20 having a look at the netmap tutorial on route reflector page it shows a frame relay switch sitting in the middle of a bunch of routers and the netmap has 107 at the end of the connections, 107 being the linklayer header type for frame relay. Frame relay switches make decisions based on dlcis, whereas ethernet switches make decisions based on mac addresses. Configure fr switch as a frame relay switch and create a pvc between r1 and r2. A virtual circuit is established between the dte and corresponding dce. You have a physical connection from user a to a framerelay provider switch. Configure router to be a frame relay switch duration. The setup here will use the hub and spoke configuration, router0 is the hub, router1 and router2 are the spokes.
Pointtopoint is the simplest form of frame relay configuration. Frame relay is a scalable wide area network solution which makes use of packetmode transmission. On a frame relay switch, frames from a frame relay pvc arriving on an incoming interface are switched to a frame relay pvc on an outgoing interface. So to assist you, below we will discuss one of the more difficult ccna concepts. Nov 02, 2005 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. As per this table the packet with dlci number 58 is forwarded to the outgoing interface3 and that having dlci number 25 is forwarded to interfacei. Configuring pointtopoint frame relay subinterfaces free. The logical connection through the frame relay network between two dtes is called a virtual circuit vc.
How to configure frame relay in cisco packet tracer. So with iou i want a frame relay connecting to four other routers in a hub and spoke topology. Preliminary configuration stepsthe basics of configuring a cisco device running the ios. Bandwidth is provided on a best effort basis in framerelay. Normally you dont really have to think about the frame relay switch since this is something that the service provider will configure. Merging and superseding of configuration commands 42. Frame relay allows for a single serial interface on the router to connect multiple remote sites with the help of virtual circuits. The router configured for frame relay switching over isdn cannot initiate the isdn call. Configuring pointtopoint frame relay links free ccna workbook.
How to configure frame relay in cisco packet tracer jesins. As a ccna candidate you are familiar with the concept of framerelay, although you do not need to configure the framerelay switch. Troubleshoot problems with framerelay circuits on your cisco. The values of nt1 and nn1 combine to determine how often full status. 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. There are a couple of options for creating a frame relay topology. You can also try this on live routers and other network simulators, but the frame relay switch configuration varies. The structure of the frame relay frame shown in the figure. Establishes an exclusive connection during the transmission period called virtual connec. Configuring the frame relay encapsulation on a logical interface 9. 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.
The service provider configures the frame relay switch, which helps keep enduser configuration tasks to a minimum. The figure5 depicts operation of frame relay switch. The configuration of the router as a frame relay switch is described in step 2. I have two cisco 2610xm with one of them got a serial nm4as 4 serial ports asyncsync and this would be my frs router. This can be accomplished by using the ping and other troubleshooting methods. 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. The frame provider and customer agree on a committed information rate. Keywords wide area network, frame relay cloud, router. Frame relay tutorialnetwork,frame,switch,topology,service. Dec 18, 2011 frame relay is a wan technology that uses packet switching methodology for communication. Nvram copy startup running this command merges configuration from nvram to ram. Frame relay is an international data link protocol that defines the capabilities to create a frame switched packetswitched service, allowing dte devices typically routers to send data to many other devices using a single physical connection to the frame relay service.
Onewaytomakethisnetworkworkfullyistocreateafullymeshednetwork networkb,butdoingsorequiresalargenumberofpvcs,whichmaynotbeeconomicallyfeasible. As part of the big lab i am doing i want to do some work with frame relay. In previous lessons i gave an introduction about framerelay and explained how to configure framerelay pointtomultipoint. The configuration for multiple frame relay switches is. Frame relay figure 153 frame relay access device local access loop to the service provider network local access loop is the physical wiring that interconnects the customer premise frad and the service provider networks frame relay switch access port. Bridgingtransmitting nonip traffic or merging two networks. For this configuration, we need to designate one of the routers to be the frame relay switch. In this example, the frame relay switch is actually physically a router, a layer three device, but its functionality in this case is a layer two device. The following examples illustrates the process of configuring a frame relay. The service is also offered at t3 rates by some of the frame relay vendors. Local management interface lmi message is used to check the status between frame relay dte and dce. Is the setup of a router as a frame relay switch configuration the same regardless of whether the spoke routers interfaces or subinterfaces, i should say are 25098. After configuring your network, its considered a good idea to verify that your configuration is working.