New H3c Technologies Co., Ltd.

Daorong Guo

A Deterministic Traffic (DT) transmission method and device is provided. The method includes: in a case where it is determined that a received packet belongs to a DT, and the packet does not carry Cycle Specified Queuing and Forwarding (CSQF) domain schedule information, determining a target time slot number corresponding to an arrival time of the packet; according to the target time slot number, querying a time slot schedule cycle mapping table at an egress interface for the packet, and determining a target cycle schedule queue corresponding to the target time slot number, where the time slot schedule cycle mapping table is determined based on intra-node jitter at the network node, and is used to record a mapping relationship between a time slot number and a cycle schedule queue number; scheduling the packet to the target cycle schedule queue at the egress interface for the packet.

Deterministic traffic transmission method and device

Deterministic flow transmission methods and systems, and electronic devices are provided by the present application. In embodiments of the present application, the first service packet sent by the first transmission node within a certain scheduling cycle is specified to enter a certain cyclic scheduling queue of the second transmission node (that is, the specified cyclic scheduling queue), so as to ensure that the first service packet is scheduled and forwarded on time by the second transmission node. As such, even if there is jitter on the transmission link between the first transmission node and the second transmission node, due to both a scheduling cycle for the first transmission node to schedule and transmit the first service packet and a scheduling cycle for the second transmission node to schedule and transmit the first service packet can be directly determined, it can be ensured that the above-mentioned jitter has no influence on deterministic parameters of the first service packet (which is equivalent to de-jittering the above-mentioned jitter), and a deterministic flow transmission for the first service packet is realized.

Deterministic flow transmission methods and systems, and electronic devices

The present application provides methods and apparatuses for collecting CSQF schedule cycles applied to a deterministic network. For a head node on a transmission path, according to receiving time stamps of the head node receiving test packets and sending time stamps of the head node scheduling to send test packets, information on a CSQF schedule cycle of the head node is determined; for a non-head node, according to information on CSQF schedule cycles of other transmission nodes before the non-head node, test packets corresponding to the non-head node, when arriving at the other transmission nodes before the transmission node, are controlled to enter receiving queues RQs of the other transmission nodes, and according to receiving time stamps of the non-head node receiving test packets and sending time stamps of the non-head node scheduling to send test packets, information on a CSQF schedule cycle of the transmission node is determined.

Methods and apparatuses for collecting CSQF schedule cycles applied to deterministic network

The invention relates to a congestion processing method, apparatus, network device and storage medium. The method comprises: receiving a first data packet carrying a congestion mark through a target port; searching, in a preset greedy flow table, a target table entry that includes target flow information carried in the first data packet and an identifier of the target port, and the preset greedy flow table stores flow information of a data flow whose traffic is greater than a preset traffic threshold and an identifier of a port that receives the data flow corresponding to the flow information; processing, if the target table entry is found, the first data packet; removing, if the target table entry is not found, the congestion mark carried in the first data packet to obtain a second data packet, and processing the second data packet.

Congestion processing method, apparatus, network device and storage medium

A method and an apparatus for transmitting data and a network device are provided. In an example of the method, after an interface board and a logical channel both corresponding to first data to be sent are determined, when the logical channel has a capability to send the first data, second data is obtained by adding header information of an interface board identifier and a logical channel identifier to the first data, and stored in a buffer corresponding to the logical channel. Next, when the second data is sent, the second data is read from the buffer, the interface board identifier and the logical channel identifier are obtained from the header information of the read second data, the first data is obtained by removing the header information from the read second data, and the obtained first data is sent to the interface board corresponding to the interface board identifier.

Data transmission

A method and device for preventing a failure processing delay are provided in the disclosure. In an example, when the number of queue elements in an equivalence class time-window queue reaches a set threshold (denoted as N) in a set time-window, it means that there are N Bidirectional Forwarding Detection (BFD) sessions in the same equivalence class set, that detect Down events. It thus can be intelligently inferred that a public network path carrying the N BFD sessions breaks down. For processing a failure in time and reducing data stream loss on an upper layer, the present disclosure may allow reporting a corresponding Down event for each BFD session in the equivalence class set to which the N BFD sessions belong.

Preventing failure processing delay

Provided is a method and device for switching a primary/backup PW. When a primary PW is detected having changed into a Down status by a BFD session corresponding to the primary PW, PE searches for a matching switching information entry. When in the switching information entry indicates transmission switching is supported, and Failover value indicates that a packet is forwarded via a backup PW, the PE updates Failover value in a hardware protection switching entry to the Failover value in the switching information entry. When bRX in the switching information entry indicates reception switching is supported, the PE updates drop identifier in a hardware reception entry to a value indicating that a packet is received, and updates the bFS to a value indicating that transmission switching is not supported; and the PE reports a Down event of the primary PW.

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Beijing, China

Daorong Guo