Frame Relay

Posted by AJ × 05:24

 Frame Relay is a way of sending information over a WAN by dividing data into packets

 It operates at the Physical and Data Link layers of the OSI reference model

 It relies on upper-layer protocols such as TCP for error correction

 Frame Relay is a switched data link-layer protocol that handles multiple virtual circuits using (HDLC) encapsulation

 Frame Relay interface can be either a carrier-provided public network or a network of privately owned equipment, serving a single enterprise

Frame Relay –benefits

 Reduced internetworking costs

 Statistically multiplexed traffic from multiple sources over private backbone

networks can reduce the number of circuits and corresponding cost of bandwidth

 Lower Equipment Costs

 Lower cost than dedicated leased lines

 Increased performance & reduced network complexity

 Reduces the amount of processing (as compared to X.25)

 Efficiently utilizing high speed digital transmission lines, frame relay can improve performance and response times of applications.

 Increased interoperability via international standards

 Frame relay can be implemented over existing technology

 Access devices often require only software changes or simple hardware modifications to support the interface standard

 Existing packet switching equipment and T1/E1 multiplexers often can be upgraded to support frame relay over existing backbone networks.

Frame Relay overwiew

 Packet Switched

 Uses Virtual Circuits (Connection Oriented Service)

 Logical connection created between two (DTE) devices across a Frame Relay packet-switched network (PSN)

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