Data network with constrained switch transmission rates

摘要

A data network includes a plurality of end systems; a plurality of line data buses connected to the end systems; and a plurality of switches connected to the line data buses and to other switches via trunk data buses to define a star topology. The switches and end systems are configured to operate asynchronously. Each switch includes a number of packet schedulers for managing the transmission of received data flow. A number of effective line rate utilization mechanisms are each associated with a respective packet scheduler for providing the service rate of that packet scheduler. Switch egress ports transmit the received data flow. Each switch egress port has a defined configured effective transmission rate. Each effective line rate utilization mechanism reduces the utilization rate to the defined configured effective transmission rate.

主权项

1. A data network, comprising:
a) a plurality of end systems; b) a plurality of line data buses connected to said plurality of end systems; c) a plurality of switches connected to said plurality of line data buses and to other switches via trunk data buses to define a star topology, said switches and end systems configured to operate asynchronously, each switch comprising:
i. a plurality of packet schedulers for managing a transmission of received data flow;ii. a plurality of effective line rate utilization mechanisms, each associated with a respective packet scheduler for providing the service rate of that packet scheduler; and,iii. a plurality of switch egress ports for transmitting the received data flow, each switch egress port having a defined configured effective transmission rate, wherein each effective line rate utilization mechanism reduces a utilization rate to said defined configured effective transmission rate by introducing a silent period following each frame transmission of a packet so that a duration of a transmission time of a frame plus the silent period is equal to a duration of time needed to transmit the frame at an effective line rate.