Frame relay is one of the most popular wan service deployed over the past decade. In this step, you configure ospf for hubandspoke over frame relay using the nbma ospf network type, which is the default. Figure 32 dedicated line wan requirements a dedicated line provides little practical opportunity for a onetomany connection without getting more lines from the network provider. Frame relay is no longer a topic in ccnav3 200125 exam. Dlci number must be unique for a frame relay interface. Provides greater bandwidth than leased line reduces cost because it uses less equipment easy to implement frame relay is associated with layer 2 of the osi model and encapsulates data packets in a frame relay frame frame relay is configured on virtual circuits. Examples of wan technologies and protocols include frame relay, atm, and dsl. Pdf frame relay is a protocol used for connecting devices on a wide area network. Several compression methods have been developed and deployed that reduce the bandwidth required by a voice call to as little as 4 kbps, thereby allowing more voice calls to be carried over a single frame relay serial interface or subinterface pvc. The routers used with ccna handson labs are cisco 1941 integrated. Cisco supports three types of lmis link management interface. This chapter describes the frame relay service provided by the router, and how to set up and. 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 in icnd2 has anyone who has taken the icnd2 exam lately seen any questions relating to frame relay. Its also one of the most difficult protocols to understand for most ccna students. Connectivity between these end nodes is accomplished with the use of frame relay virtual circuits vcs. The chapter offers an introduction to the frame relay concept of committed information rates and explains the situations where frame relay will work well, as well as those applications that are not suited to frame relay. Flow and congestion control in frame relay networks. Ccna 4 chapter 4 what is a characteristic of frame relay that provides more flexibility than a dedicated line. Lab troubleshooting basic frame relay background scenario frame relay is a wan protocol that operates at the physical and data link layers of the osi reference model. Computernetworkingnotes ccna study guide how to configure frame relay step by step guide. Learn ccna 4 chapter 3 with free interactive flashcards. 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. How to configure a basic frame relay permanent virtual circuit pvc, including configuring and troubleshooting frame relay on a. Ccna425 chapter 3 frame relay encapsulation frame relay takes data packets from a network layer protocol and encapsulates them as the data portion of a frame relay frame. For framerelay configuration, we will create the following topology in cisco. See the chapter configuring voice over frame relay in the cisco ios voice.
This means that it can easily be used instead of a mesh of ti or t 3 lines. The remainder of the terms will be illustrated where appropriate throughout this chapter. The fundamental concepts of frame relay technology, including operation, implementation requirements, maps, and local management interface lmi operation. Ppp carries packets from several network layer protocols in lcps. Scenario your isp has provisioned frame relay pvcs for the international travel agency wan. Learn frame relay with free interactive flashcards. Frame relay is one of the wan protocols you need to understand if you plan to become ccna certified. If the frame relay network is congested, demarked frames can be. I know it was removed from the exam topics, but i heard a rumor about questions related to frame relay showing up in the exam. Multiprotocol interconnect over frame relay 6 lmilocal management interface frame relay 20062007 2 36.
Suppose you are working in a big company and your company has just expanded to two new locations. Using packet tracer set up the devices and cabling. Pdf establishing frame relay connections using packet tracer. Configure frame relay for the cisco ccna part 1 youtube. Frame relay services represent a highvalue offering for all of your customers data communications, with speeds from 56 kbps to ds3. In figure 33, spans frame relay network uses permanent virtual circuits pvc. The becn bit warns the sender of congestion in the network through switches that either use response frames from the receiver or that use a prede. Unlike leased lines, frame relay requires only a singleaccess circuit to the frame relay provider to communicate with multiple sites that are connected to the same provider. The value of this field is always the same and is represented either as the hexadecimal number 7e or as the binary number 01111110. Free ccna study guide, tutorials, labs, practice exams. Normal ethernet arp request knows the layer 3 address ip and requests for layer 2 address mac. Frame relay allows a frame size of 9000 bytes, which can accommodate all local. Frame relay is a widearea network with the following features.
Compare this to the physical path used by a dedicated connection. This command enables framerelay on a serial interface. How to configure a basic frame relay permanent virtual circuit pvc, including configuring and troubleshooting frame relay on a router serial interface and configuring a static. In this chapter, you will begin exploring some of the options available for designing enter prise wans, the. The frame relay address has been extended from the original 2 byte address to 3 or 4 byte address, in order to increase the range of dlcis. In part 3, you will configure frame relay on routers r1 and r3. Chapter 3 introduction to cisco routers, switches and ios.
This chapter explains the principles behind frame relay from a nontechnical perspective. Frame relay figure 152 illustrates some of the frame relay terminology used. Ce protocole est utilise par les fournisseurs dacces pour transmettre des signauxvocaux et numeriques entre reseaux locaux par lintermediaire dun reseau etendu. The frame relay cloud allocates as much bandwidth as required to active pvcs to maintain the connection. Dlci spans 2 bytes ccna426 chapter 3 frame relay topologies a topology is the map or visual layout of the network. Customers use dedicated circuits in increments of 64 kbs. Frad frame relay assemblerdisassembler is a device used by frame relay to handle frames arriving from other protocols. Frame relay operates in just the physical and data link layers. Again, type 103 in the dlci field, type r1r3 in the name field, and then click add. When you are connecting a cisco router with a noncisco router, use ietf as the encapsulation method. Ccna 4 chapter 3 which three statements are true about ppp.
Choose from 26 different sets of frame relay flashcards on quizlet. Quizlet flashcards, activities and games help you improve your grades. Dec 08, 2012 summary frame relay is the most widely used wan technology because it. Frame relay congestion control 1110 frame relay encapsulation 1111 frame. As the administrator, you are responsible for configuring frame relay among regional offices.
This local loop is typically a ds0, ds1, nxds1, ds3 service, or some fraction of ds1ds3 service such as fract1. Configure a basic frame relay permanent virtual circuit pvc, including configuring and troubleshooting frame relay on a router. This part explains ppp point to point protocol and encapsulation method in detail with examples. 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. In this tutorial ill explain to you why we use d frame relay and how it works. Feb 06, 2016 ccna 4 final exam answers 2019 version 5. Basic concepts of frame relay explained in easy language. This means it can easily be used as a backbone network to provide services to protocols that already have a network layer protocol, such as the internet. As an economical option, sprint wholesale frame relay service is available with a 0 cir option, while assuring 99.
On the other hand, frame relay inverse arp knows the layer 2 address dlci and requests for layer 3 address ip so we called it inverse. A virtual path is created through the frame relay network so data can rapidly pass through each frame relay switch as its path is previously established. Frame relay is inherently a nonbroadcast multiaccess nbma network. Objectives describe the fundamental concepts of frame relay technology, including operation, implementation requirements, maps, and local management interface lmi operation. Choose from 500 different sets of ccna 4 chapter 3 flashcards on quizlet. Describe the fundamental concepts of frame relay technology, including operation, implementation. Relay modules switch, isolate, and amplify signals reliably.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Encapsulation framerelay command on cisco routerswitch. Frame relay complements and provides a midrange service between basic rate isdn, which offers bandwidth at 128 kbits, and asynchronous transfer mode atm, which operates in somewhat similar fashion to frame relay but at speeds from 155. Cisco supports two types of frame relay encapsulation.