Asynchronous transfer mode asynchronous transfer mode atm asynchronous transfer mode atm is a highspeed, nonbroadcast layer 2 technology, similar in many respects to frame relay. This command shows a listing of the network layer address to dlci mappings defined on a router, along with their current status. Mpls vpn technology overview this module introduces virtual private networks vpn and two major vpn design options overlay vpn and peertopeer vpn. Bridge id priority 32768 priority 32768 sysidext 1 address 000c. Since you are working your way to becoming the ultimate networking guru, you are prepared to do a full frame. The default ospf network type for basic frame relay is. Frame relay is a wan technology that uses packet switching methodology for communication. Large enterprises, governments, isps, and small businesses use frame relay, primarily because of its price and flexibility. Most telephone companies now provide frame relay service for customers who want connections at 56 kbps to t1 speeds. The framerelay 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.
My question is how do i connect them physically back to back with a db60 dtedce cable to make them a. Frame relay originated as an extension of integrated services digital network isdn. The required fields in an ethernet header add up to 18 bytes thus, the frame payload must be a minimum of 46 bytes, to equal the minimum 64byte frame size. Dec 18, 2011 frame relay is a wan technology that uses packet switching methodology for communication. May 28, 2014 everything you need to know about frame relay for the ccna exam and also for the route exam. Section 10 router components section 11 introduction to the cisco ios section 12 advanced ios functions. Bridge id priority 32869 priority 32768 sysidext 101. To demonstrate comunication through frame relay switch we connected to it two end devices routers in our case, we configured them with their ip addresses and prepared to support frame relay encapsulation on interfaces connected to fr switch. In this case we are using router r1 as the frame relay switch.
Frame relay basic configurations hub and spoke cisco. The absolute minimum frame size for ethernet is 64 bytes or 512 bits including headers. In this tutorial ill explain to you why we use d frame relay and how it works. Ce protocole est utilise par les fournisseurs dacces pour transmettre des signauxvocaux et numeriques entre reseaux locaux par lintermediaire dun reseau etendu. How to configure a cisco router as a frame relay switch. Allow core routersnetworking devices to switch packets based some simplified. Frame relay is a widearea network with the following features.
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. But there is nothing that tells your router which dlci goes to which ip address or tells the router when it wants to get to a particular ip address which dlci to use to get there. Frame relay atm asynchronous transfer mode the datalink frame contains the source and destination hardware or physical the guides. Although frame relay is popular due to its relatively inexpensive nature, it is being replaced in many areas by. 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. Ospf will form neighbor relationships with adjacent routers in the same area. They are locally significant and they identify themselvesto the frame relay cloud so it knows where they. Frame relay is a scalable wide area network solution which makes use of packetmode transmission. First, with dedicated lines, customers pay for an endtoend connection.
This chapter describes frame relay and explains how to configure frame relay on a cisco router. This chapter quizzes you on frame relay terminology and on how to enable frame relay encapsulation on a cisco router. It is considered a nonbroadcast multiaccess nbma technology because multiple routers can access the frame cloud but do not have broadcast ability. Verify the framerelay map statements using the show framerelay map command. May 10, 2010 frame relay eigrp ospf multi redistribute server nat port forwarding radius cisco packet tracer duration. 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. 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.
The username must be the hostname of the remote router, and the password must be the same on both routers. The equipment available with the telecom company transmits one frame to one remote site and the other to another remote site, this results in the frame relay to be viewed as a type of packet switching. Data is sent in hdlc packets, referred to as frames. C h a p t e r 15 frame relay frame relay is a layer 2 data link widearea networking wan protocol that operates at both layer 1 physical and layer 2 data link of the osi networking model. My question is how do i connect them physically back to back with a db60 dtedce cable to make them a hub and spoke network. All router interface had been configured with ip addresses and routing protocol ripv2. You have the possibility to disable the lmi on an interface by specifying the no keepalive command. The second line sets the username and password used for ppp authentication. Each network is as secure as a frame relay connection. As a ccna candidate you are familiar with the concept of framerelay, although you do not need to configure the framerelay switch. Frame relay terms and definitions contd committed information rate cir the bandwidth defined for a vc bc committed burst maximum number of committed bits to be transmitted over time interval be excess burst number of excess bits that will be transmitted over time tc time interval time measurement based how much bandwidth is. Both frame relay beginners, who need to understand the technology, and advanced readers, who need information on the wide range of frame relay features cisco offers, will benefit from this book. The second line uses a keyword of any, which will match permit any other. Frame relay allows for a single serial interface on the router to connect multiple remote sites with the help of virtual circuits.
Cisco specifies three rules regarding eigrp over frame relay. 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. Telstra frame relay is a highspeed packetswitched data transmission technology intended primarily for customers with the need for multisite many to many or in some instances single to many connectivity. Framerelay is one of the wan protocols you need to understand if you plan to become ccna certified. So to assist you, below we will discuss one of the more difficult ccna concepts. Ospf adheres to the following link state characteristics. 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. A frame relay switch is required for configuring a frame relay network. Regardless of the wan encapsulation used, it must identical on both sides. If your router is connected to a frame relay network, use the frame relay intftype dte command to.
Its also one of the most difficult protocols to understand for most ccna students. If your router is connected to a frame relay network, use the framerelay intftype dte command to. 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. This tutorial explains how to configure frame relay step by step. Scenario your isp has provisioned frame relay pvcs for the international travel agency wan. In addition to supporting higher bandwidths, atm integrates qos mechanisms directly into the technology. Please notice that we use the word switch to refer to this router, simply because in the. Frame relay is one of the wan protocols you need to understand if you plan to become ccna certified. The difference between a globally or locally significant. The frame passes through the network of the provider till it reaches the remote site router which is on the other end of the frame relay cloud.
Everything you need to know about frame relay for the ccna exam and also for the route exam. Originally designed for transport across integrated services digital network isdn infrastructure, it may be used today in the context of many other network interfaces. If your router functions as a switch connected to another nonframe relay router, use the framerelay intftype dce command to configure the lmi type to support data communication equipment dce. As the administrator, you are responsible for configuring frame relay among regional offices. Basic frame relay concepts frame relay has become the most widely used wan technology in the world. Hi all, in this article we will configure a cisco router to act as a frame relay switch. If your router functions as a switch connected to another non frame relay router, use the frame relay intftype dce command to configure the lmi type to support data communication equipment dce. 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. So lets say you have a central office that uses a high end cisco router such as a 7200 series router to terminate multiple pointtopoint frame relay circuits that you have coming into the co on a single ds3 circuit but you need each branch router to treat the circuit as if its a pointtopoint circuit but be able to communicate with other branch. Configure router to be a frame relay switch youtube. Cisco4portchannelizedt3ds0spa cisco8portchannelizedt1e1spa release4. This command provides detailed statistics on lmi traffic passed between a router and its local frame relay switch, as well the lmi type is use. A packetswitching protocol for connecting devices on a wide area network wan.
However, cisco frame relay solutions guide is a useful design, implementation, and configuration guide for networking professionals of all levels. Frame relay is an industry standard, shared across, best effort, switch data link layer encapsulation that services multiple virtual circuits and protocols between connected mechanisms. Frame relay reduces network costs by using less equipment, less complexity, and an easier implementation. In this tutorial ill explain to you why we use d framerelay and how it works. The module then describes mpls vpn architecture, operations and terminology.
There will be 3 neighbors over the frame relay and each neighbor will have a unique ip address within the subnet. Operating with a single port, frame relay enables video, voice, ip, systems network architecture sna and enterprise resource planning. The figure below shows the basic frame relay configuration on a cisco router, connected directly to a dedicated frame relay switch, or dce. Frame relay is a synchronous hdlc protocol based network. Frame relay user guide for routing devices techlibrary. The framerelayinarp command clears all dynamic entries. 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. Frame relay point to multipoint topology as you have already seen we will configure r1 interface as multipoint but r2 and r3 as pointtopoint. Before we get started with configuration,lets talk a little bit about what you see in front of you.
Frame relay is one of the most popular wan service deployed over the past decade. Ospf open shortest path first ospf is a standardized linkstate routing protocol, designed to scale efficiently to support larger networks. Ospf employs a hierarchical network design using areas. The router with the highest priority becomes the dr. A frame that is smaller than 64 bytes will be discarded as a runt. Configuring a pointtomultipoint frame relay wan free ccna. May 29, 20 frame relay is a wan technology, it is used for communication. Now, as you can see, all these dlcis that are surroundingthe routers, remember those are data link connection identifiers. Its designers aimed to enable a packetswitched network to transport over circuitswitched technology. Routing is the process of finding a path on which data can pass from source to destination. 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 is the ideal technology to establish lantolan connections and distributed clientserver networks. Remove the previous configuration from r1s serial00 interface and create a pointtomultipoint subinterface and configure it with the correct framerelay maps. I have two cisco 2610xm with one of them got a serial nm4as 4 serial ports asyncsync and this would be my frs router.
Most telephone companies now provide frame relay service for customers who want connections at. This video is part of the ccna complete video course by. If there is a tie in priority, whichever router has the highest router id will become the dr. Although frame relay internetworking services were initially designed to operate over integrated. Frame relay frame relay is a highperformance wan protocol that operates at the physical and data link layers of the osi reference model. Please notice that we use the word switch to refer to this router, simply because in the frame relay world, a switch is the device that. Frame relay terms and definitions contd committed information rate cir the bandwidth defined for a vc bc committed burst maximum number of committed bits to be transmitted over time interval be excess burst number of excess bits that will be transmitted over time tc time interval time measurement based how much bandwidth is available for. The technology has become a standalone and costeffective means of creating a wan. Frame relay is a wan technology, it is used for communication. If a framerelay dlci attains a state other than active meaning inactive or deleted, you can check the framerelay configuration to make sure its configuration matches the configuration of the router acting as the framerelay dte device. For this configuration, we need to designate one of the routers to be the frame relay switch. Frame relay is a more costeffective option for two reasons. Frame relay switches create virtual circuits to connect remote lans to a wan. The datalink layer packages the higherlayer data into frames, so that.
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