How Is Error Checking Managed On A Frame Relay Network

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How Frame Relay Works

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All Application performance on the WAN WAN network monitoring WAN optimization and application acceleration Please select a category Telecom Services VPNs/Security WAN Design Infrastructure Optimization/Application Performance Section Get Started News Get Started Evaluate Manage Problem Solve Sponsored Communities Home Bandwidth and capacity planning Network software frame relay Definition frame relay frame relay tutorial Posted by: Margaret Rouse WhatIs.com Share this item with your network: Sponsored News Leveraging Expert Managed Services for Optimal SQL Server Performance –Rackspace Three Questions to Ask When Moving to Hybrid Cloud –IBM See More Vendor Resources SingTel IP VPN Manufacturing Industry –Singapore Telecommunications Ltd Cutting Through the Complexity of Multi-Protocol Label Switching (MPLS) ... –NetScout Systems, Inc. Frame relay is a packet-switching telecommunication service designed for cost-efficient data transmission for intermittent traffic between local area networks (LANs) and between endpoints in wide area networks (WANs). The service, once widely available and implemented, is in the process of being discontinued by major Internet service providers. Sprint ended its frame relay service in 2007, while Verizon said it plans to phase out the service in 2015. AT&T stopped offering frame relay in 2012 but said it would support existing customers until 2016. Download this free guide Just For You: E

Frame Relay Networks. Last Modified Aug. 25, 1995 Table of Contents Introduction to frame relay configuration Frame Relay Networks The Frame Relay Protocol The Frame Relay what is frame relay in networking with diagram Bearer Service Data Transmission Frame Format Congestion Control Multiprotocol Encapsulation over Frame Relay Multicasting with Frame frame relay switch Relay Customer Network Management LAN Interconnection with Frame Relay Introduction to LAN Interconnection Benefits of Frame Relay Setting up Frame Relay Frame relay and ATM http://searchenterprisewan.techtarget.com/definition/frame-relay Overview of Frame Relay and ATM Network Internetworking Service Internetworking The Future Bibliography Books Articles ANSI and ITU-T standards Internet RFCs and Drafts Related to Frame Relay Web Resources 1. IntroductionToday's communication networks are built using digital trunks that are inherently reliable, while providing a high throughput and minimal delay. http://www.cs.wustl.edu/~jain/cis788-95/ftp/frame_relay/index.html The traditional approach to packet switching (X.25), used in-band signaling, and includes end-to-end and well as per-hop flow control and error control. This approach results in considerable overhead. Frame relay is a packet-mode transmission service that exploits characteristics of modern networks by minimizing the amount of error detection and recovery performed inside the network. Thus , by streamlining the communications process, lower delay and higher throughput is achieved. Frame relay offers features that make it ideal to interconnect LANs using a Wide Area Network (WAN). Traditionally, this was done using private lines, or circuit switching over a leased line. However, this method has several drawbacks, mainly that it becomes prohibitively expensive as the size of the network increases - both in terms of miles and number of LANs. The reason for the high-cost is that high-speed circuits and ports must be setup on a point-to-point basis between an increasing

Error correction is done on an end-to-end basis rather than a link -to-link basis as in X.25 switching. Frame relay can support multiple users over the same line and can establish a permanent virtual circuit or a switched virtual circuit. Frame relay is considered to be a http://ecomputernotes.com/computernetworkingnotes/network-technologies/frame-relay protocol, which must be carried over a physical link. While useful for connection of LANs, the combination of low throughput, delay variation and frame discard when the link is congested will limit its usefulness to multimedia. •Packet switching was developed when the long distance digital communication showed a large error rate. •To reduce the error rate, additional coding bits were introduced in each packet in order to introduce redundancy to detect and recover errors. •But in the modem high frame relay speed telecommunication a system, this overhead is unnecessary and infect counter productive. •Frame relay was developed for taking the advantage of the high data rates and low error rates in the modem communication system. • The original packet switching networks were designed with a data rate at the user end of about 64 kbps. • But the frame relay networks are designed to operate efficiently at the user's data rates upto 2 Mbps. • This is possible practically because most how is error of the overhead (additional bits) are striped off. • Frame relay is a virtual circuit wide area network which was designed in early 1990s. • Frame relay also is meant for more efficient transmission scheme than the X.25 protocol. • Frame Relay is used mostly to route Local Area Network protocols such as IPX or TCP/IP. • The biggest difference between Frame Relay and X.25 is that X.25 guarantees data integrity and network managed flow control at the cost of some network delays. Frame Relay switches packets end-to-end much faster, but there is no guarantee of data integrity at all. • Various key features of this protocol are as follows: 1. The call control packets are used for setting up and clearing virtual circuits. 2. In band signaling is used. 3. Multiplexing of virtual circuits takes place at layer 3. 4. Layer 2 and 3 include flow control and error control. Characteristics of Frame Relay Frame Relay service is a service that supports the transport of data Frame relay is a connectionless service, meaning that each data packet passing through the network contains -address information Frame relay is a service that is provided with a variety of speeds from 56 Kbs up to 25 Mbs. Even though the most used speeds for the service are currently 56 Kbs and 1.544 Mbs Frames are variable in length and goes up to 4,096 bytes Frame Relay is considered to be