Congestion notification across multiple layer-2 domains

摘要

One embodiment of the present invention provides a congestion notification. During operation, the system receives a congestion notification message with a destination layer-2 address set as the receiving mechanism's layer-2 address. The system modifies a destination layer-2 address, a source layer-2 address, and optionally a VLAN identifier of the congestion notification message, and forwards the modified congestion notification message.

主权项

1. A computing system, comprising:
a processor; a computer-readable storage medium storing instructions which when executed by the processor causes the processor to perform a method, the method comprising:
removing a layer-2 header of a congestion notification message that includes a destination layer-2 address set as the computing system's layer-2 address, wherein the congestion notification message includes a sampled packet from a congested flow; andassigning a layer-2 destination address to a locally generated second layer-2 header for the congestion notification message, wherein the assigned layer-2 destination address is derived based on the source address of the sampled packet.