US Patent 12126542 Forwarding information obtaining method and apparatus

A forwarding information obtaining device and method, the method including obtaining, by a first device in response to congestion in a first queue, a service parameter identifier of a first packet buffered in the first queue, where the service parameter identifier indicates a parameter used to forward the first packet, and performing, by the first device, a first operation based on the service parameter identifier, where the first operation is performed to relieve the congestion of the first queue.