Scribd is the worlds largest social reading and publishing site. Ppt frame relay powerpoint presentation free to download. This data communication and networking virtualcircuit networks. Fr makes use of physical circuit by statistically multiplexing multiple pvcs over a single physical circuit. Ethernet, token ring, frame relay, and other data link layer technologies have their own frame structures. Apr 05, 2016 frame relay connects a lan to a lan through a wan by allowing you to share the cost of bandwidth. A virtual circuit in frame relay is identified by a number called a data link connection identifier dlci. Frame relay is a network protocol to establish a virtual connection called virtual circuit between two dtes through dces. The term virtual here means that the two dtes are not connected directly but through a network. Practice mcqs to test learning on networking basics, address mapping, internet working, frame relay and atm, port addresses quizzes.
Frame relay became a popular choice for telecommunications companies in the united states during the. Frame relay reduces network overhead by implementing simple congestionnotification mechanisms rather than explicit, pervirtualcircuit flow control. Data communication and computer networks pdf notes smartzworld. It is a broad survey of frame relay networks both from a designers and. Frame relay is one of the most popular wan service deployed over the past decade. These frames, or packets of data, are usually sent between local area networks lans within a wide area network wan. By being independent of any specific network technology, tcpip can be adapted to new technologies. This virtual circuit has two connection types and multiple connections can be multiplexed using unique connection identifier for each connection. Frame relay operates in just the physical and data link layers. Data communications and networking second edition behrouz a.
Frame relay itself is implemented over a reliable network and, flow control can be addressed by the higher layers in the osi model. Computer networks mcq helps with theoretical, conceptual, and analytical study for selfassessment, career tests. Originally designed for transport across integrated services digital network infrastructure, it may be used today in the context of many other network interfaces. 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. Usually, dlcis 0 to 15 and 1008 to 1023 are reserved for special purposes. Connecting lans, backbone networks and virtual lans, wireless wans, sonet, frame relay and atm. Examples of dte devices are terminals, personal computers, routers, and bridges.
Line tools thing 1 training courses professor knowledge pdf notes knives teacher. Difference between frame relay and atm with comparison. Service frame relay provider company uses its internal infrastructure to build vcs. Configuring frame relay feature history release modification forinformationaboutfeaturesupportinciscoios software,useciscofeaturenavigator. Twenty years past, communication victimization phonephone lines was slow analog, and unreliable, and computers were slow and dear. The service, once widely available and implemented, is in the process of being discontinued by major internet service.
See more ideas about network world, frame relay and computer network. In the past few years there have been important advancements in computer and. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Nics come in three basic varieties 8 bit, 16 bit and 32 bit. Frames are the units of digital transmission particularly in computer networks and telecommunications. Frame relay connects a lan to a lan through a wan by allowing you to share the cost of bandwidth. In previous lessons i gave an introduction about framerelay and explained how to configure framerelay pointtomultipoint. Frame relay, cisco ios release 15s 1 framerelayimplementation. This tutorial explains how to configure frame relay step by step. Jul, 2016 in order for a frame relay wan to transmit data, data terminal equipment dte and data circuitterminating equipment dce are required. Frame relay allows for a single serial interface on the router to connect multiple remote sites with the help of virtual circuits. Establishes an exclusive connection during the transmission period called virtual connection.
Raj jain professor of computer and information sciencesthe ohio state universitycolumbus, oh. Data communication and computer networks pdf notes dccn. Index terms bgp, network simulation, frame relay, vlan, x. A frame relay network this illustration depicts the customer and service provider sides of a frame relay network. 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. Dtes are typically located on the customers premises and can encompass terminals, routers, bridges and personal computers. Congestion control in frame relay basic working mechanisms. Frame relay frame relay could be a service for folks that need associate absolute barebones connectionoriented thanks to move bits from a to b at affordable speed and low cost smith, 1995. Nov 11, 2016 frame relay is a scalable wide area network solution which makes use of packetmode transmission. May 26, 2016 frame relay itself is implemented over a reliable network and, flow control can be addressed by the higher layers in the osi model. Jul 21, 2005 troubleshoot problems with frame relay circuits on your cisco router by david davis ccie in networking on july 21, 2005, 12.
Col raj kamal congestion control occurs if data rate is greater than that allowed by network resources. Frame relay originally was designed for use across integrated services digital network isdn interfaces. In a network with frame relay access, a pvc uniquely defines the. All the end user need to know is which vc is connected with which site.
It includes a bibliography and a set of www sites with information on frame relay networks. Thismibprovidessnmpnetworkmanagementaccesstomostoftheinformation. Internetwork a network of networks is called an internetwork, or simply the internet. 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. 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. Network providers commonly implement frame relay for voice and data as an encapsulation technique used between local area networks. Basic concepts of frame relay explained in easy language. Explain how congestion control is performed in frame relay network. Forouzan deanza college with catherine coombs and sophia chung fegan boston burr ridge, il. Neither end user need to know this technology nor provider company share this information with users. Virtualcircuit networks frame relay and atm multiple choice. This chapter focuses on frame relay s specifications and applications in the context of wan services.
Frame relay is an example of a packetswitched technology. Lans and wans can be interconnected via t1 or t3 digital leased linesaccording to the protocols involved, networks interconnection is achieved using one or several of the following devices. A frame relay network will often be depicted as a network cloud, because the frame relay network. Fr makes use of physical circuit by statistically multiplexing multiple pvcs over a single physical circuit higher network availability. Frame relay is a computer networking structure that allows for a quick and efficient way to transmit frames from one device to another. Difference between frame relay and atm with comparison chart. Frame relay connects two sites via vc virtual circuit. A beginners guide to frame relay in computer networks. 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. Lab configuring frame relay and subinterfaces topology. There are two kinds of congestion notification systems that.
The connection through a frame relay network between two dtes is called a virtual. This can be accomplished by using the ping and other troubleshooting methods. Networking hardware may also be known as network equipment computer networking devices. Frame relay allows users to transmit bursty traffic and therefore has potential to congest the network. Frame relay access equipment is the customer premises equipment cpe that uses frame relay to send information across the wide area. Asynchronous transfer mode atm is a cell relay protocol that, in combination with sonet, allows highspeed. Jul 31, 2012 the term virtual here means that the two dtes are not connected directly but through a network. If your verification procedure indicates that your frame relay configuration is not working properly, you need to troubleshoot the configuration. In a frame relay network of more than 992 sites, global addressing will not work. The job of the network device is to switch or route the frame through the network to the proper destination user device. Dlci values typically are assigned by the frame relay service provider for example, the telephone company.
Computer network and information security, 2017, 10, 3340. Can two devices connected to the same frame relay network. Flow and congestion control in frame relay networks doras. Frame relay and atm multiple choice questions and answers mcq pdf covers the below lists of topics. By using this mib, a customers network management system nms can monitor its pvcs, uni ports, and nni ports. On the other hand, atm provides 51 mbps or 155 mbps. Pdf designing of wide area network with the use of frame relay. Frame relay network to network svc implementation agreement, frf. Frame relay congestion control raj jain professor of computer and information sciences the ohio state university columbus, oh 43210 these slides are available at. After configuring your network, its considered a good idea to verify that your configuration is working. All locations plug into the frame relay cloud, which is a conglomeration of dozens or hundreds of framerelay switches and routers. Lmi is a signaling standard between the router and the frame relay switch that is responsible for managing the connection and maintaining status between the devices.
Frame relay frame relay packetswitching with virtualcircuit technology an enhancement of x. With the advent of broadband services such as dsl and cable modem, gigaman pointtopoint. Frame is continuously used in time division multiplexing process. Jul 16, 2018 frame relay uses virtual circuits to connect a single router to multiple remote sites. Sep 15, 2018 the major difference between frame relay and atm lies in the speed of transmission, where frame relay provides 1. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. In most cases, permanent virtual circuits are used, i. Chapter 6 performance of frame relay networks with congestion control. Frame relay, is an endtoend wan technology, also considered as secondgeneration x. Ch1 ch2 ch3 ch4 ch5 ch6 ch7 ch8 ch9 ch10 ch11 ch12 ch ch14 ch15 ch16 ch17 ch18 ch19 ch20 ch21 ch22 ch23 ch24 ch25 ch26 ch27 ch28 ch29 ch30 ch31 ch32 problem. The network providing the frame relay interface can be either a carrierprovided public network or a network of privately owned equipment serving a single.
May 24, 2016 frame relay is a network protocol to establish a virtual connection called virtual circuit between two dtes through dces. Frame relay uses virtual circuits to connect a single router to multiple remote sites. In addition, configuring user equipment in a frame relay network is fairly simple. Although frame relay is popular due to its relatively inexpensive nature, it is being replaced in many areas by. The concept behind global dlci addressing is to simplify frame relay network addressing administration.
Frame relay is a network protocol to establish a dedicated connection also called as the virtual circuit. The major difference between frame relay and atm lies in the speed of transmission, where frame relay provides 1. Frames are comparable to the packets of energy called photons in case of light energy. Frame relay user guide for routing devices techlibrary. Frame relay access equipment is the customer premises equipment cpe that uses frame relay to. Network topology defines how different nodes in a network are connected to each other and how they communicate is determined by the networks topology. Frame relay is a layer 2 data link widearea networking wan protocol that. Data communication and computer network 6 wan may use advanced technologies such as asynchronous transfer mode atm, frame relay, and synchronous optical network sonet. Frame relay typically is implemented on reliable network media, so data integrity is not sacrificed because flow control can.
Computer networks pdf notes free download cn notes. Today, it is used over a variety of other network interfaces as well. 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. Dec 03, 2019 frame relay is a virtualcircuit widearea network that was designed in response to demands for a new type of wan in the late 1980s and early 1990s. Frame relay defines some restrictions on the users information rate. In fact, you can think of frame relay as a way of utilizing existing t1 and t3 lines owned by a service provider. The rapid advances in computer and communications technologies have. 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. Most telephone companies now provide frame relay service for customers who want connections at 56 kbps to t1 speeds. Frames have headers that contain information such as errorchecking codes.
Frame relay is a layer two technology and as a result, dlcis do not traverse a router. The way the frames are sent is like a relay data is passed from one router or node to. Download for offline reading, highlight, bookmark or take notes while you read computer networks mcqs. Thus, in general, framerelay is less expensive than dedicated wan lines, but customers are not guaranteed bandwidth. 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. Fr offers reduction of physical local loops over private line network as frame uses a virtual circuit for each new connection higher circuit utilization. Troubleshoot problems with framerelay circuits on your cisco. The data communication and computer networks notes pdf dccn pdf notes book starts with the topics covering communications, multiplexing and spreading, block coding, backbone networks, logical addressing, process toproccss delivery, network management system, etc. Apr 28, 2016 frame relay, is an endtoend wan technology, also considered as secondgeneration x. Nic provides a physical connection between the networking cable and the computer s internal bus.
Fr network employs switches that support automatic routing of pvc around. In this lesson well take a look at framerelay pointtopoint which is far easier to configure. At data link layer, it extracts message from sender and provide it to receiver by providing senders and receivers address. Frame relay free download as powerpoint presentation. Can two devices connected to the same frame relay network use the same dlcis. Once the network has established a connection, the edge node of the frame relay network must monitor the connections traffic flow to ensure that the actual usage of network resources does not exceed this specification. Frame relay network uses permanent virtual circuits pvcs. The frame relay forum and the internet engineering task force have jointly developed a standard snmp management information base mib for frame relay cnm, rfc 1604, definitions of managed objects for frame relay service. The elements of frame relay frame relay networks are made up of frame relay access equipment, frame relay switching equipment and public frame relay services.