Patent ID: 7839777
Filing Date: 2010-11-23
Classification: H04L

Abstract:
1. A method for managing backward congestion in a Data Center Ethernet (DCE) network, comprising: receiving a data packet at a node in the network; detecting congestion of the data packet at the node in the network; generating at least one backward congestion notification signal for the data packet at the node in the network, wherein a packet injection rate is adapted based on at least one of the backward congestion notification signal generated by the node in the network and another backward congestion notification signal; wherein the data packet is received at the node in the network from a source node, the another backward congestion notification signal is generated by a destination node and transmitted for the data packet to the source node in response to receipt of a congestion notification signal transmitted with the data packet from the node in the network, and the source node adapts the packet injection rate based on the backward congestion signal received first; wherein the congestion notification signal is a data bit included in a data packet header of the data packet transmitted to the destination node, and each backward congestion notification signal is a data bit included in a data packet header transmitted to the source node; wherein each data packet header including a backward congestion notification signal also includes a field indicating a source of the backward congestion notification signal.