Patent attributes
One embodiment of the present invention provides a system that avoids network congestion. During operation, the system can detect an onset of congestion in a first queue at a first node. Next, the first node can generate a first control-message, wherein the first control-message contains a congestion-point identifier which is associated with the first queue. The first node can then send the first control-message to a second node, which can cause the second node to delay sending a second message to the first node, wherein the second message is expected to be routed through the first queue at the first node. Next, the second node may propagate the control-message to a third node which may cause the third node to delay sending a third message to the second node, wherein the third message is expected to be routed through the first queue at the first node.
