Huawei Technologies Co., Limited

Tencent Technology (Shenzhen) Company Limited

Tongtong Wang

Zhiqiang Chen

Nan Li

Xinyuan Wang

Wenbin Yang

Zhijun Li

Lihao Chen

Jiayi Zhang

Changsong Li

Wei Lu

Haixiang Li

Anqun Pan

Penghao Si

Xiaoyong Du

Minwei Jin

A service traffic adjustment method includes a first controller obtaining a first limit value of a traffic parameter and a second limit value of the traffic parameter. The first controller obtains a target value of the traffic parameter based on the first limit value of the traffic parameter, the second limit value of the traffic parameter, and configuration information of a forwarding device through which the service flow passes. The target value of the traffic parameter meets a delay requirement of the service flow, the target value falls within a range determined based on the first limit value of the traffic parameter and the second limit value of the traffic parameter, and the first limit value is not equal to the second limit value. The first controller sends the target value of the traffic parameter.

Service traffic adjustment method and apparatus

A method includes: obtaining, by a control device, a service requirement latency of transmitting a data stream from a first network device to a second network device; obtaining, by the control device, a network device transmission latency on a forwarding path and a link transmission latency on the forwarding path; and determining, by the control device based on the service requirement latency of the data stream and the network device transmission latency and the link transmission latency on the path for forwarding the data stream, a required bandwidth for transmitting the data stream.

Method, device, and system for determining required bandwidth for data stream transmission

An embodiment of the present disclosure contemplates a data sending and receiving method and apparatus. A first FEC unit of a sending device sends, by using a first channel, a first data stream on which first FEC encoding has been performed; a second FEC unit of the sending device sends, by using a second channel, a second data stream on which second FEC encoding has been performed; and the sending device performs interleaving on the first data stream and the second data stream, to obtain an output data stream, and sends the output data stream to a receiving device.

Data sending and receiving method and device

A packet forwarding method includes a first network device receiving a first message from a second network device via a second egress port of the second network device, where the first message measures a phase difference, and where the phase difference is a phase difference between a switching time of one of a plurality of first buffers of a first egress port of the first network device and a switching time of one of a plurality of second buffers of the second egress port of the second network device with a link delay taken into consideration. The first network device determines the phase difference based on the first message. Then, the first network device schedules, based on the phase difference, a second data packet sent via the first egress port.

Packet forwarding method, device, and system

A data processing method is provided. The method includes obtaining an operation instruction, the operation instruction including operation type information and target data unit information corresponding to a target data unit; querying a target data group in a data group set according to the target data unit information, the data group set including at least one data group, the data group including at least one data unit; obtaining locked-state information of the target data group; performing locking detection on the target data unit based on the locked-state information and the operation type information to obtain a detection result; performing locking processing on the target data unit based on the detection result; and executing the operation instruction after the locking processing is performed, to perform an operation corresponding to the operation type information on the target data unit.

Data processing method and related apparatus

A network device adds an extreme low latency (ELL) service packet to an ELL queue, and adds a (time sensitive) TS service packet to a TS queue. A packet in the TS queue is sent within a time window corresponding to the TS queue, and the packet in the TS queue is not allowed to be sent within a time period beyond the time window corresponding to the TS queue. When a remaining time period obtained by subtracting a time period required by a to-be-sent TS service packet within the time window from the time window is greater than or equal to a first threshold, a packet in the ELL queue is allowed to be sent within the time window corresponding to the TS queue. The first threshold is a time period required for sending one or more ELL service packets in the ELL queue.

Packet scheduling method, scheduler, network device, and network system

An embodiment of the present disclosure contemplates a data sending and receiving method and apparatus. A first FEC unit of a sending device sends, by using a first channel, a first data stream on which first FEC encoding has been performed; a second FEC unit of the sending device sends, by using a second channel, a second data stream on which second FEC encoding has been performed; and the sending device performs interleaving on the first data stream and the second data stream, to obtain an output data stream, and sends the output data stream to a receiving device and error correction capability of a receiving device could be improved. In addition, in the present disclosure, an operation of writing by row and reading by column does not need to be performed. Therefore, no delay is generated.

This application discloses a packet forwarding method and apparatus, a system, a device, and a storage medium. The method is applied to an in-vehicle network and includes: obtaining, by a network device, a plurality of packets carried on an Ethernet link in the in-vehicle network, where the plurality of packets are packets of one or more application categories; determining a traffic class of each packet based on an application category of each packet in the plurality of packets; adding each packet to a forwarding queue corresponding to the traffic class based on the traffic class of each packet; and scheduling and forwarding packets in all forwarding queues based on an absolute priority and a traffic class corresponding to each forwarding queue, and using a shaper in a forwarding queue of at least one traffic class in intermediate traffic classes in the scheduling and forwarding process.

Packet forwarding method and apparatus, system, device, and storage medium

A network device receives an Ethernet frame, checks a destination media access control (MAC) address based on a first cyclic redundancy check (CRC) code, to determine whether an error occurs in the destination MAC address. If the network device determines that no error occurs in the destination MAC address, the network device forwards the Ethernet frame based on the destination MAC address. The Ethernet frame includes the destination MAC address, the first CRC code, and a payload, a parameter of the first CRC code includes the destination MAC address, and the parameter of the first CRC code does not include the payload.

Ethernet frame forwarding based on checking for an error in the ethernet frame

A method includes a network device receiving a plurality of fragments of an Ethernet frame, where the plurality of fragments include an initial fragment and a first fragment, and where the initial fragment includes a destination media access control (MAC) address field. In response to an error occurring in the Ethernet frame, the first fragment is changed to a second fragment, where the second fragment includes second type indication information (TII) and second to-be-transmitted data (TBTD), where the second TII indicates that a type of the second TBTD is a control character, where a value of first TBTD is different from a value of the second TBTD, and where the second TBTD indicates that an error occurs in the Ethernet frame. The network device sends the second fragment to a destination device.

Transmitting fragments of ethernet frame with indicating error occurring in ethernet

A network configuration method includes determining an end-to-end latency upper bound of data traffic between two end nodes, determining an end-to-end latency constraint of the data traffic between the two end nodes, determining, based on the end-to-end latency upper bound and the end-to-end latency constraint, for a first network shaper, at least one configuration parameter that satisfies the end-to-end latency constraint, and configuring the first network shaper for the data traffic based on the at least one configuration parameter such that the traffic after being shaped by the shaper satisfies the network latency constraint.

Network configuration method and device

A packet forwarding method includes receiving N Time-Sensitive Networking (TSN) packet flows, where each of the N TSN packet flows corresponds to a constraint condition that defines duration of a cycle, a maximum quantity of packets that are allowed to be transmitted in the cycle, and a maximum length of a single packet, and forwarding the N TSN packet flows based on a new constraint condition, where the new constraint condition is based on the constraint condition corresponding to each of the N TSN packet flows and defines duration of a new cycle, a new maximum quantity of new packets that are allowed to be transmitted in the new cycle, and a new maximum length of a new packet, where each of the N TSN packet flows is forwarded in a case in which a corresponding constraint condition is complied with.

Time-sensitive networking (TSN) packet forwarding

A method including a network device receives a plurality of fragments of an Ethernet frame, where the plurality of fragments include an initial fragment and a first fragment, and the initial fragment includes a destination media access control (MAC) address field, in response to an error that occurs in the Ethernet frame, changes the first fragment to a second fragment, where the second fragment includes second type indication information (TII) and second to-be-transmitted data (TBTD), the second TII indicates that a type of the second TBTD is a control character, a value of first TBTD is different from a value of the second TBTD, and the second TBTD indicates that an error occurs in the Ethernet frame, and the network device sends the second fragment to a destination device.

Growing community of inventors

Beijing, China

Tongtong Wang