Frame relay is a simplified form of packet switching, similar in principle to x. In this lesson well take a look at frame relay point to point which is far easier to configure. It includes a bibliography and a set of www sites with information on frame relay networks. They use two dlcis to communicate with multiple endpoints over the frame relay cloud. I just configured a scenario of point to point frame relay. Configuring pointtopoint frame relay subinterfaces free. May 09, 2010 in this post i will configure my lab to use frame relay in a point to point configuration. Framerelay pointtopoint, eigrp, ospf,configuration,verfication, pdf file, troubleshooting, interface, pointtopoint. The problem is that no bgp connectionrouting update between the two routers. Frame relay is a widearea network with the following features. Actually, such subinterfaces do not allow the frame relay map command. Frame relay is pretty easy to setup and configure and monitor but a little more difficult to design because you have to take into account any oversubscription you may have and growth paths.
Well assign it a dlci of 102, and point it to chicagos ip address. Configuring a cisco router as a frame relay switch. Configuring static and dynamic dlci to network layer address mapping. How to configure frame relay on cisco router technig. As routing protocol will use eigrp, we have used 2600 series routers and one frame relay switch.
Mpls compared with frame relay and internet vpn sdwan experts. Configuring frame relay feature history release modification forinformationaboutfeaturesupportinciscoios software,useciscofeaturenavigator. A main advantage of configuring frame relay multipoint compared to point to point subinterfaces is we can assign ip addresses on the same subnetsnetworks to the interfaces of frame relay switch, thus saving the subnetsnetworks you have. On partially meshed frame relay networks, the problem of split horizon can be overcome by using frame relay subinterfaces. Frame relay frame relay is a highperformance wan protocol that operates at the physical and data link layers of the osi reference model. Presently, it is used for networks for atms and credit card verification. Basic frame relay point to point configuration on cisco. As shown in the figure, i mapped dlci as shown below. Pointtopoint is the simplest form of framerelay configuration. The subnet address is normally designated to the each connection of the point to point. In this lab we will setup a frame relay point to multipoint topology on cisco routers by using gns3. Lets take a look at a simple, point to point frame relay connection between two routers using physical serial interfaces. A good starting point for frame relay verification can be the show frame relay map command. The frames in frame relay contain an expanded link layer address field that enables frame relay nodes to direct frames to their destinations with minimal processing.
Difference between framerelay and vpn cisco community. The logical and physical topologies of this lab are shown below. Although frame relay is popular due to its relatively inexpensive nature, it is being replaced in many areas by. Frame relay is a highperformance wan protocol that operates at the physical and data link layers of the osi reference model. By creating a point topoint subinterface which will have an interfacedlci assigned to it youll have the ability for r1 to communicate to r2 and r3 as if r1 has two completely separate point topoint links using only a single physical link to the frame relay cloud.
In previous lessons i gave an introduction about frame relay and explained how to configure framerelay point tomultipoint. You first need to configure fr switch as a frame relay switch and. Using frame relay pointtopoint subinterfaces cisco frame. The most important difference is that frame relay is a layer 2 technology that runs on a physical medium of a serial interface. Frame relay point to point with eigrp get networking. Frame relay networks consist of frame relay switches interconnected by point to point frame relay links or interfaces. Hi all, i have tow routers frame relay back to back and configuring bgp. Sangoma supports frame relay mostly through its wanpipe routing packages, and also through user level apis for oem developers. Pointtopointwhen a frame relay pointtopoint subinterface is configured, the subinterface emulates a pointtopoint network and ospf treats it as a pointtopoint network type. Carriers will sell you a cir or committed information rate on their frame relay network. R1 est configure en point to point vers r4, et en multipoint vers r2 et r3. Frame relay is one of the most popular wan service deployed over the past decade.
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 is fundamentally connection oriented, which means that a vc must be set up across the frame relay network prior to any data transfer. Information model objects imos this section describes the following imos. The same command is used to associate dlci 304 with point to point subinterface s31. Jun 07, 2019 open the frame relay lab which you have downloaded and configure frame relay the same as screenshot. As you know frame relay is a wellknown wan technology that generally used for backbone routers. Configuring frame relay subinterfaces cisco frame relay. The same command is used to associate dlci 304 with pointtopoint subinterface s31. A good starting point for frame relay verification can be the show framerelay map command. Pdf establishing frame relay connections using packet tracer. Configuring a framerelay switch is outside the scope of the ccna, ccnp and even the ccie exam. In most cases, permanent virtual circuits are used, i.
In this lab we will try to run a frame relay topology same as the one posted in tshoot demo ticket. It offers lowercost data transfer when compared to typical point to point applications, by using virtual connections within the frame relay network and by combining those connections into a single physical connection at. You will now set up a basic point to point frame relay connection between routers 1 and 2. The frame relay labs, unlike any of the other labs in exploration 4, have two dce links on the same router. For a more detailed comparison of frame relay processing and x. The framerelay interfacedlci 301 and framerelay interfacedlci 302 commands are configured on multipoint subinterface s31.
On serial0 of frame relay switch add the following dlci and named with router name or anything you want. A main advantage of configuring frame relay multipoint compared to pointtopoint subinterfaces is we can assign ip addresses on the same subnetsnetworks to the interfaces of frame relay switch, thus saving the subnetsnetworks you have. Frame relay point to point, eigrp, ospf,configuration,verfication, pdf file, troubleshooting, interface, point to point. 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. Feb 05, 2011 please select 480p above for best quality. Correct answer cf or ce q which two statements about frame. The only piece of information needed is the dlci, which will be used to send all data onto that point to point subinterface. You will now set up a basic pointtopoint frame relay connection between routers 1 and 2. The concept behind global dlci addressing is to simplify frame relay network addressing administration. Aug 10, 2005 frame relay subinterfaces can run in two modes.
If you use gns3 you can use the simpletoconfigure framerelay switch emulator. Frame relay pointtopoint subinterfaces international journal on recent and innovation trends in computing and communication issn. Actually, such subinterfaces do not allow the framerelay map command. Frame relay by running pppofr point to point protocol over frame relaybut thats another lesson. Hdlc and ppp with a pointtopoint wan link, weve got two options for encapsulation. Enarsi training frame relay pointtopoint subinterface. The only piece of information needed is the dlci, which will be used to send all data onto that pointtopoint subinterface. You first need to configure fr switch as a frame relay switch and create dlcis. In this lab we will build a frame relay point to point topology on cisco routers by using gns3.
On the networks of the frame relay, the single vc originates at the local end and also terminate at a remote end. Originally designed for transport across integrated services digital network isdn infrastructure, it may be used today in the context of many other network interfaces. Apr 05, 2016 frame relay connects a lan to a lan through a wan by allowing you to share the cost of bandwidth. It was originally designed for use in the 1970s and became very popular in 1980s. Remember that pvcs are only oneway circuits, and thus we need to create two pvcs in order for full communication to occur. The frame relay interfacedlci 301 and frame relay interfacedlci 302 commands are configured on multipoint subinterface s31. Cisco router frame relay switch configuration point to. In previous lessons i gave an introduction about framerelay and explained how to configure framerelay pointtomultipoint. In this lesson well take a look at framerelay pointtopoint which is far easier to configure. Configuring frame relay point to point on cisco router. We call this locally significant, because it only affects the interface on the. The point to point frame relay is the easiest one to configure.
Permanent and switched circuits frame relay provides permanent virtual circuits pvcs and switched virtual circuits. The current main site routers configuration looks like this. The structure of the frame relay frame shown in the figure. Configuring point topoint frame relay subinterfaces. Be sure to change your cabling to reflect the topology diagram. Using frame relay pointtopoint subinterfaces cisco. For routing traffic between devices will use eigrp routing protocol, we have used 2600 series routers and one frame relay switch. This rate is the bandwidth you are guaranteed by the carrier. Changing a pointtopoint sub interface to a different type requires the device to be reloaded. For example if you purchase a 256 kbps cir from a carrier, all traffic up to that point will be guaranteed to be delivered. This tutorial explains how to configure frame relay step by step.
Configuring a pointtomultipoint frame relay wan free. Try to configure the serial interfaces of the frame relay switch like below screenshot. Verify the framerelay map statements using the show framerelay map command. To understand the basic configuration of frame relay, there is a configuration below with three cisco 3600 series router and one frame relay switch. Point to point is the simplest form of frame relay configuration. Cisco frame relay configurations configuring frame relay. You will also configure frame relay pointtopoint subinterfaces. Also different routing protocols behave differently on frame relay, make sure you are aware of this and how you setup the router interfaces. Hi all, i have tow routers framerelay back to back and configuring bgp. It offers lowercost data transfer when compared to typical pointtopoint applications, by using virtual connections within the frame relay network and by combining those connections into a single physical connection at.
Basic concepts of frame relay explained in easy language. As of july 1, 2009, it is strongly recommended to all ccent testtakers that you study both the frame relay material in the icnd1 and icnd2 sections of this course. Configuring a pointtomultipoint frame relay wan free ccna. In this article you will learn how to configure a framerelay pointtopoint network on cisco ios routers. Difference between frame relay and vpn i will take a slightly different approach to explain the difference than calin or ohassairi. Frame relay switches interconnect via point to point lines or an atm backbone.
Frame relay switches interconnect via pointtopoint lines or an atm backbone. Frame relay networks are typically deployed as a costeffective replacement for point to point private line, or leased line, services. Frame relay point to point subinterfaces international journal on recent and innovation trends in computing and communication issn. Frame relay provides a mechanism to allow a physical interface to be partitioned into multiple virtual interfaces.
Difference between framerelay and vpn i will take a slightly different approach to explain the difference than calin or ohassairi. Frame relay allows for a single serial interface on the router to connect multiple remote sites with the help of virtual circuits. R1 must be configured with a frame relay on subinterfaces so that it can find the next hop destination to reach that network. Packet tracer configuring frame relay pointtopoint subinterfaces. Jul 16, 2018 frame relay uses virtual circuits to connect a single router to multiple remote sites. This frame is very similar to the hdlc frame except for the missing control field here. Lab wan frame relay pointtopoint sub interface set cloud. Frame relay is a scalable wide area network solution which makes use of packetmode transmission. Remove the previous configuration from r1s serial00 interface and create a pointtomultipoint subinterface and configure it with the correct framerelay maps. By creating a pointtopoint subinterface which will have an interfacedlci assigned to it youll have the ability for r1 to communicate to r2 and r3 as if r1 has two completely separate pointtopoint links using only a single physical link to the frame relay cloud.
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