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Frame Relay Technology. Done By: Ayman Rabee. What is Frame Relay. Frame Relay is a connection-oriented protocol that employs virtual link. It requires an establishing of a connection before two nodes can communicate. These Aspects made it economical and efficient. Frame Relay Devices.
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Frame Relay Technology Done By: Ayman Rabee
What is Frame Relay • Frame Relay is a connection-oriented protocol that employs virtual link. • It requires an establishing of a connection before two nodes can communicate. • These Aspects made it economical and efficient
Frame Relay Devices • Data terminal equipment (DTE) • Data circuit-terminating equipment (DCE) • provide clocking and switching services in a network • Access line that interconnects DTEs and DCEs.
Frame Relay Virtual Circuits • Switched Virtual Circuit (SVC) • Permanent Virtual Circuit (PVC) Each VC is identified by Data Link Connection Identifier DLCI.
Congestion Control in FR Network • Admission Control • Committed Information Rate CIR. • Committed Burst Size BC. • Excess Burst Size BE.
Addressing the Congestion • Informing the End nodes that network experiences congestion. • Consequently, End nodes slows its rate of transmission. • This can be done using two mechanisms:
Forward-explicit congestion notification (FECN). • Backward-explicit congestion notification (BECN). Note that Frame doesn't correct the errors. It depends on higher protocols to that. For this reason its fast and preferable.
How to Connect to a Frame Relay Network • What is the average and peak bandwidth required by your target applications? 2. What are your objectives for application?
Access Fees Fees for each PVC.