SWITCH DEVICE FOR A NETWORK ELEMENT OF A DATA TRANSFER NETWORK

摘要

A switch device for a network element includes a transfer system (110) for transferring data from ingress line interfaces of the network element to egress line interfaces of the network element in accordance with control information associated with the data. The transfer system includes a control section (111) configured to compare data traffic load to capacity available to the data traffic load at one of the egress line interfaces so as to generate a congestion indicator expressing whether a data flow (113) representing the data traffic load is a potential cause of congestion at the one of the egress line interfaces. The control section is further configured to direct a congestion control action to the data flow if the data flow is a potential cause of congestion. Thus, the congestion management related to the ingress and egress line interfaces can be carried out by the switch device.

主权项

1. A switch device capable of being a part of a network element of a data transfer network, the switch device comprising:
ingress interfaces connectable to ingress line interfaces of the network element, egress interfaces connectable to egress line interfaces of the network element, and a transfer system for transferring data from the ingress interfaces to the egress interfaces in accordance with control information associated with the data,wherein the transfer system comprises a control section configured to:
compare data traffic load represented by a data flow directed to one of the egress line interfaces of the network element to capacity available to the data flow at the one of the egress line interfaces of the network element so as to generate a congestion indicator expressing whether the data flow is a potential cause of congestion at the one of the egress line interfaces of the network element, and direct a congestion control action to the data flow in response to a situation in which the data flow is, according to the congestion indicator, the potential cause of congestion.