US 11,888,731 B1Granted

Congestion notification for network communication

AssigneeAvago Technologies International Sales Pte. Limited

InventorsVishal Bhawsar, Vivek Kumar

Life of this patent

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Abstract

Systems and methods are provided for congestion notification in network communications, including multi-protocol label switching (MPLS) network communications. In one or more implementations, an MPLS node that receives a data packet and detects congestion may generate a cloned copy of the data packet, add congestion information, such as a congestion notification label and a congestion notification header, into the data packet, and forward the cloned copy with the congestion notification label and the congestion notification header to a next MPLS node. The next MLPS node may, responsive to receiving the cloned copy with the congestion information, provide one packet with the congestion information to a subsequent node, and another packet with the congestion information to the node from which the cloned copy was received.

Claims20

Dependent claims

A device, comprising:

a memory storing instructions;
and processing circuitry, wherein the instructions, when executed by the processing circuitry, cause the processing circuitry to perform operations comprising:
receiving a packet comprising one or more labels from a second device over a network, wherein each of the one or more labels identifies a path through the network for the packet;
detecting congestion on the network;
generating a first copy of the packet;
performing an action on the one or more labels of the first copy of the packet, wherein the action comprises at least one of:
adding a first new label to the one or more labels, swapping one of the one or more labels with a second new label, and removing one of the one or more labels;
generating, responsive to detecting the congestion, a second copy of the packet;
adding congestion information into the second copy of the packet;
performing the action on the second copy of the packet;
and providing the first copy and the second copy including the congestion information to a third device over the network.

8 more elements

A system, comprising:

a first device configured to:
receive a packet comprising one or more labels from a second device over a network, wherein each of the one or more labels identifies a path through the network for the packet;
detect congestion on the network;
generate a first copy of the packet;
perform a first action on one of the one or more labels of the first copy of the packet, wherein the first action comprises at least one of:
adding a first new label to the one or more labels, swapping one of the one or more labels with a second new label, and removing one of the one or more labels;
generate, responsive to detecting the congestion, a second copy of the packet;
add congestion information into the second copy of the packet;
perform the first action on the second copy of the packet;
and provide the first copy and the second copy including the congestion information to a third device over the network.

7 more elements

Dependencies are inferred from the claim text.