Frame Relay
Frame Relay is a telecommunication service designed for cost-efficient data transmission for intermittent traffic between local area networks (LAN) and between end-points in a wide are network (WAN). Frame Relay puts data in a variable-size unit called a "frame" and leaves any necessary error correction up to the end-points, which speeds up overall data transmission. Fro most services, the network provides a permanent virtual circuit (PVC), which means that the costumer sees a continuous, dedicated connection without having to pay for a full-time leased line while the service provider figures out the route each frame travels to its destination and can charge based on usage.
Frame Relay complements and provides a mid-range service between ISDN, which offers bandwidth at 128kbps, and Asynchronous Transfer Mode (ATM), which operates in somewhat similar fashion to frame relay but at speeds from 155.520Mbps or 622.080Mbps.
Frame Relay is based on the older X.25 packet-switching technology which was designed for transmitting analog data such as voice conversations.Unlike X.25 which was designed for analog signals, frame relay is a fast packet technology, which means that the protocol does not attempt to correct errors. When an error is detected in a frame, it is simply dropped or thrown away.
Packet Switching
Packet switching is a store and forward switching technology for queuing networks where user
messages are broken down into smaller pieces called packets. Each packet has its own associated overhead containing the destination address and control information. Packets are sent from source to destination over shared facilities and use a statistical time−division multiplexing (TDM) concept to share the resources. Typical applications for packet switching include short bursts of data such as electronic funds transfers, credit card approvals, point of sale equipment, short files, and e−mail.
Where People Use Frame Relay
Frame Relay is often used to connect local area networks with major backbones as well as on public wide area networks an also in private network environments with leased lines over T-1 lines. It requires a dedicated connection during the transmission period, It is not ideally suited for voice or video transmission, which requires a steady flow of transmissions. However, under certain circumstances, it is used for voice and video transmission.
Frame Relay is designed as a WAN technology primarily for data. When the deployment began, end users and carriers alike all felt that digital voice (data) could ride on Frame services. However, that aside, the network and protocols were designed to carry data traffic across the WAN. More specifically, Frame Relay was developed to carry data traffic across the WAN and link Local Area Networks to other LAN.
A higher speed Frame Relay connection
Frame Relay Speeds
Actually, few end users have ever implemented Frame Relay at the higher speeds; this is more of a speed for the carrier community, but the need for stepped increments has always been a requirement for data transmission.
Typical speeds used in Frame Relay
Frame Relay Selected for Wireless Data on GPRS
One might think about this and wonder why Frame Relay is used. First, it is widely deployed as a line adding some degree of security. Second, it is based on the PVC from the PCU to the network device called a Serving GRPS Support Node (SGSN). Third, the standards allow for the sharing of the circuitry from many devices by interleaving the data frames on the same physical channel. Fourth, it does minimize the overhead on the channel.
The PCU uses Frame Relay to connect to the SGSN.
In general, the use of Frame Relay has been continually climbing due to the robustness, industry
acceptance, and wide availability. Many organizations are not ready to displace their networks by moving to newer or different services. However, where the customer has used an IP−based network, the use of managed services, burstable data rates, and inexpensive access of PVCs and SVCs combined now with IP−enabled Frame Relay continues to lend credibility and acceptance in this networking standard. We can expect to see this around for a long time to come.
Source:
Broadband Telecommunications Handbook (VPN 3GW GPRS MPLS VoIP SIP).pdf
Indeed frame relay is a very big help for innovations because it is very cost-effective though there are still complications in connections, they would still surely occur.
TumugonBurahinNaalis ng isang administrator ng blog ang komentong ito.
TumugonBurahinWhat a nonsense comment..:)
Burahinframe relay was very functional nowadays specially in communication..
TumugonBurahinthanks for your post alvin..
keep it up ;)
by the help of frame relay it helps to minimize the connection to the other computer that can cause conflict. and more faster to transmit in terms of data. tnx for that alvin.
TumugonBurahinWhat are the advantages of Frame Relay?
TumugonBurahinBased on my research,
Burahin--Frame Relay is more suitable for connecting LANs to bridges and routers.
--It is often a desirable option for transmitting data because the data is not lost in this way.
--Frame relay operates in a variable bandwidths ranging from 56 Kbps and 45Mbps. Therefore a user can exploit any of the bandwidth for commercial or domestic use.
Thats all i know.. If you have additional information about its advantages, you are free to comment..Thank You..
You said that frame relay in general, its use has been continually climbing due to the robustness, industry acceptance, and wide availability because it is more reliable and fast, thanks for the info alvin.
TumugonBurahinframe relay can be a good benifit for us.
TumugonBurahini have a question
TumugonBurahinHow many data-link connection identifier (DLCI)s can an interface support?
In general, you can put a lot more than you should, given performance and availability constraints.
BurahinFrame relay indeed is used in WAN. They have been widely used over the years that have passed. It was also a stepping stone for other technologies to step up.....
TumugonBurahinso i know now that Frame Relay complements and provides a mid-range service between ISDN
TumugonBurahinYes. I also agree with keith. with the limitations of the ISDN, the Frame Relay is the perfect solution to fill that limitation.
TumugonBurahincomparing frame relay to X.25 network,X.25 provides quality of service and error-free delivery, and Frame Relay was designed to relay data as quickly as possible over low error networks.
TumugonBurahinThe Cisco IOS creates a broadcast queue for interfaces running frame-relay. This queue performs 2 functions: it ensures routing traffic is dealt with as a priority but it also limits the bandwidth that can be consumed by such traffic. great work!! =)
TumugonBurahinyes, i agree that frame relay uses packet switching that store and forward switching technology for queuing networks where user messages are broken down into smaller pieces called packets.
TumugonBurahin