Huawei Technologies Co., Limited

Mengzhu Liu

Yinben Xia

Yali Zhang

Yi Huang

Fengkai Li

Shixing Liu

Zhaoxia Yuan

A method for implementing congestion control includes: obtaining congestion control information of a first network device, where the congestion control information includes a total bandwidth of a first egress port of the first network device and a quantity of active flows corresponding to a first queue of the first egress port; and determining a sending rate of a first data flow in the active flows based on the congestion control information, where the sending rate is positively related to the total bandwidth and negatively related to the quantity of active flows, and the sending rate is used by a sending device of the first data flow to send the first data flow.

Method, apparatus, and system for implementing congestion control

A data processing method implemented by a controller includes receiving a processing request from a specified node that carries identifiers of a plurality of computing nodes, where the plurality of computing nodes are configured to execute a specified calculation task, determining a target switching device from switching devices that are configured to connect to the plurality of computing nodes, and separately sending, to the target switching device and the specified node, routing information that indicates data forwarding paths between the plurality of computing nodes and the target switching device. The target switching device is configured to combine, based on the routing information, data reported by the plurality of computing nodes, and then send combined data to each computing node. The specified node is configured to send the routing information to each computing node, and each computing node may report data to the target switching device based on the routing information.

Data processing method, apparatus, and system for combining data for a distributed calculation task in a data center network

This application provides a congestion control method and a network device. The method includes: receiving a first message sent by a second network device, where the first message carries an active flow quantity, and the active flow quantity is a quantity determined by the second network device based on a data flow to which data packets received from a first network device belong; determining, based on the active flow quantity and rated receiving bandwidth of the second network device, packet sending control information used to send the data flow to the second network device; and sending the data flow to the second network device based on the packet sending control information. This application can better control congestion, thereby reducing network packet loss.

Congestion control method and network device

A data processing method implemented by a controller includes after receiving a processing request from a specified node carrying identifiers of a plurality of computing nodes configured to execute a specified calculation task, determining a target switching device from switching devices that are configured to connect to the plurality of computing nodes, and separately sending, to the target switching device and the specified node, routing information used to indicate data forwarding paths between the plurality of computing nodes and the target switching device. The target switching device is configured to combine, based on the routing information, data reported by the plurality of computing nodes, and then send combined data to each computing node. The specified node is configured to send the routing information to each computing node, and each computing node may report data to the target switching device based on the routing information.

The method includes a first network device receives a first packet of a first group of data packets from a second network device, and increases a current quantity of active flows by 1, to obtain a first quantity of active flows, the first network device receives a last packet of the first group of data packets sent by the second network device, and determines a first congestion value based on a second quantity of data packets that carry an explicit congestion notification (ECN) identifier in the first group of data packets, and when the first congestion value is less than a congestion threshold, the first network device decreases the first quantity of active flows by 1, to obtain a third quantity of active flows, or when the first congestion value is greater than or equal to the congestion threshold, the first network device keeps the first quantity of active flows unchanged.

Method and system for counting quantity of active flows and network device

A service packet sending method and device include receiving, by a first network device, a Transmission Control Protocol (TCP) packet from a second network device, where the TCP packet includes a service identifier, obtaining, by the first network device, based on the service identifier, a priority of a service, obtaining a TCP window based on the priority of the service, sending a TCP acknowledgement (ACK) packet including the TCP window to the second network device to enable the second network device to calculate a size of a service packet to be sent to the first network device.

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Beijing, China

Mengzhu Liu