WO2016086385A1 - Procédé, dispositif et système de régulation d'encombrement - Google Patents

Procédé, dispositif et système de régulation d'encombrement Download PDF

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Publication number
WO2016086385A1
WO2016086385A1 PCT/CN2014/093015 CN2014093015W WO2016086385A1 WO 2016086385 A1 WO2016086385 A1 WO 2016086385A1 CN 2014093015 W CN2014093015 W CN 2014093015W WO 2016086385 A1 WO2016086385 A1 WO 2016086385A1
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network node
data stream
congestion
pfc
data
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PCT/CN2014/093015
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English (en)
Chinese (zh)
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肖俊俊
梁剑耀
文白林
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华为技术有限公司
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Priority to PCT/CN2014/093015 priority Critical patent/WO2016086385A1/fr
Priority to CN201480038620.2A priority patent/CN106134138B/zh
Publication of WO2016086385A1 publication Critical patent/WO2016086385A1/fr

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  • the embodiments of the present invention relate to the field of networks, and in particular, to a method, device, and system for congestion control.
  • Ethernet is a computer LAN networking technology.
  • the IEEE 802.3 standard developed by the IEEE gives the technical standard for Ethernet, which specifies the contents of the connection, electrical signals, and medium access layer protocols including the physical layer. Ethernet is the most common LAN technology in current applications.
  • QCN Quantized Congestion Notification
  • PFC Priority-based Flow Control
  • FIG. 1 is a schematic diagram of the working principle of the QCN mechanism in the prior art.
  • the QCN protocol uses quantitative congestion control technology and uses a relatively accurate backward congestion notification mechanism compared to other congestion control technologies.
  • the devices in the network are also referred to as network nodes; the congestion detection points are set on the network nodes based on the outbound port queues, that is, the congestion detection is performed on the cache queues that send out data on the network nodes.
  • a congestion notification message (CNM) is generated, which includes information indicating the identification information of the flow causing the congestion and the degree of congestion; the CNM generated by the network node The message is sent along the reverse direction of the streaming to the source terminal that causes congestion, and the source terminal reduces the data transmission rate of the corresponding stream according to the CNM message.
  • CNM congestion notification message
  • a node that supports the PFC mechanism divides the data stream on the inbound port queue into eight priority queues according to the priority field of the VLAN tag specified by the 802.1Q protocol. Once a priority queue is detected (such as the priority queue 3 in Figure 2) If the excessive traffic causes congestion, the receiving end pauses the data reception on the priority queue 3, and the transmitting end stops the data transmission on the priority queue 3.
  • Network node E supports QCN protocol and PFC mechanism; A and D, B and D, D and E, C and E, and F and E use PFC mechanism for flow control.
  • the thresholds for triggering the PFC mechanism and triggering the QCN mechanism are set on each node.
  • the outbound port queue buffer size is 500K bytes
  • the ingress port queue buffer size is 100K bytes.
  • the threshold for triggering the QCN mechanism (that is, the flow rate of the rate at which the outbound port sends data) can be set to 20%, that is, once the outbound port cache occupancy exceeds 20% (that is, exceeds 100 kbytes), node E
  • the QCN mechanism is activated to control the rate at which the outgoing port sends data.
  • the PFC machine is configured to be used for the ingress port.
  • the threshold for triggering the PFC mechanism on the node E (that is, the flow rate control of the rate at which the inbound port receives data) can be set to 80%, that is, once the inbound port cache occupancy rate exceeds 80% (that is, 80K bytes), node E will start the PFC mechanism to control the rate at which the inbound port receives data. If the node E detects congestion caused by too much traffic of a certain priority queue as in FIG. 2, the data reception on the priority queue is suspended.
  • the node E can easily trigger the PFC mechanism, thereby causing the node E to reduce the rate at which the inbound port receives data, that is, the nodes C, D, and F go to the port to the node.
  • E The rate at which data is sent.
  • the egress port of the node E may never be congested, and the flow control function of the QCN mechanism on it will not be started; thus, the link utilization between the nodes is too low.
  • the node E requests the node D, F or C to reduce the rate of transmitting data. For example, the node E requests the node D to reduce the rate at which the node D sends data to the node E.
  • the rate at which the node D sends data to the node E is lowered, but the rate at which the inbound port of the temporary node D receives data cannot be lowered.
  • the congestion caused by the ingress of the node D can be regarded as the fact that the node E spreads the congestion of the ingress port to the node D; and may continue to spread to the upper level node such as the node A or the node B.
  • the QCN mechanism on the node is triggered first, so that the rate at which the source terminal of the corresponding data stream transmits data decreases; and at this time, the PFC is triggered on the node E. If the threshold of the mechanism has not been reached, node E does not start the flow control function of the PFC mechanism. After the node E starts the QCN mechanism, if congestion is detected, a CNM message is generated and sent to the source terminal that causes congestion. However, the process needs to pass through multiple nodes in the network.
  • the rate at which the outbound port at the node E sends data is controlled, but the PFC mechanism has not been started.
  • the node E does not control the rate of receiving data at the ingress port, which causes the congestion of the egress port of the node E to be more serious.
  • the QCN mechanism and the PFC mechanism work together by setting a threshold.
  • the threshold setting is unreasonable, it is likely to cause congestion spread or congestion, which reduces the efficiency of the entire network system.
  • the fixed threshold setting method cannot effectively respond to changes in network data traffic, and cannot solve the problem of congestion control flexibly.
  • the embodiments of the present invention provide a method, a device, and a system for congestion control, which can effectively cope with changes in network data traffic, thereby flexibly solving the problem of congestion control.
  • an embodiment of the present invention provides a method for congestion control, including:
  • the first network node performs priority-based flow control (PFC) detection on the ingress port, for example, detecting that a certain data stream is congested within the set detection period, and obtaining a flow identifier of the data stream;
  • PFC priority-based flow control
  • the first network node sends the PFC frame to a second network node, instructing the second network node to perform congestion control on the data flow.
  • the embodiment of the present invention further provides a method for congestion control, including:
  • the network node receives a priority-based flow control (PFC) frame, where the PFC frame includes a flow identifier of the data stream;
  • PFC priority-based flow control
  • the network node performs congestion control on the data stream according to the PFC frame.
  • an embodiment of the present invention further provides a network node, including:
  • the detection module is configured to perform priority-based flow control (PFC) detection on the ingress port, such as detecting that a certain data stream is congested within a set detection period, and obtaining a flow of the data stream.
  • PFC priority-based flow control
  • a PFC frame generating module configured to generate a PFC frame, where the PFC frame includes a stream identifier of the data stream
  • the PFC frame sending module is configured to send the PFC frame, where the PFC frame is used to indicate that the network node that receives the PFC frame performs congestion control on the data stream.
  • the embodiment of the present invention further provides a network node, including:
  • a receiving module configured to receive a priority-based flow control (PFC) frame, where the PFC frame includes a flow identifier of a certain data stream;
  • PFC priority-based flow control
  • a congestion control module configured to perform congestion control on the data flow according to the PFC frame.
  • an embodiment of the present invention further provides a congestion control system, including a first network node and a second network node;
  • the first network node is configured to perform priority-based flow control (PFC) detection on the ingress port, such as detecting congestion of a certain data flow in the set detection period, and obtaining the data. a flow identifier of the flow; the first network node is configured to generate a PFC frame that includes a flow identifier of the data flow, and send the PFC frame to the second network node;
  • PFC priority-based flow control
  • the second network node is configured to perform congestion control on the data flow.
  • an embodiment of the present invention further provides a network node, including a processor and a memory.
  • the memory stores execution instructions that, when the network node is running, communicate with the memory, the processor executing the execution instructions to cause the network node to perform the method of the first aspect above.
  • an embodiment of the present invention further provides a network node, including a processor and a memory, where the memory stores an execution instruction, and when the network node is running, the processor communicates with the memory, where Executing the execution instructions by the processor causes the network to perform the method of the second aspect above.
  • an embodiment of the present invention further provides a computer readable medium, comprising computer execution instructions, for causing a host to perform the method of the above first aspect.
  • the embodiment of the present invention further provides a computer readable medium, comprising computer execution instructions, wherein the computer execution instructions are used to cause a host to perform the method of the second aspect.
  • the embodiment of the present invention improves the existing PFC mechanism, so that the PFC mechanism can perform congestion detection on a specific data flow, and the congestion degree is sent to the uplink node through the improved PFC, which can be based on the congestion situation.
  • Flexible processing of data streams can effectively cope with changes in network data traffic and congestion and increase the efficiency of the entire network system.
  • FIG. 1 is a schematic diagram showing the working principle of a QCN mechanism in the prior art
  • FIG. 2 is a schematic diagram of a working principle of a PFC mechanism in the prior art
  • FIG. 3 is a schematic diagram of a working principle of a common application of a QCN mechanism and a PFC mechanism in the prior art
  • FIG. 4 is a schematic diagram of an improvement of a PFC structure according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a working principle of Embodiment 1 of the present invention.
  • FIG. 6 is a schematic flowchart of a method according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic structural diagram of a network node according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic structural diagram of a network node according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic structural diagram of a system according to Embodiment 5 of the present invention.
  • the existing PFC ⁇ includes the following fields:
  • Destination address 6 bytes, used to indicate the destination MAC address of the data port.
  • Source address 6 bytes, used to indicate the source MAC address of the data port.
  • Ethetype 2 bytes, used to indicate the type of ⁇ .
  • Control opcode 2 bytes, used to indicate the control code.
  • Prioirty enable vector 2 bytes, expressed as backpressure enable vector, where the first byte is directly set to 0; the second byte of E(N) is 8 bits respectively defined in the PFC mechanism.
  • Time(0)-Time(7) each 2 bytes, which is a pause timer, indicating the duration of data transmission for suspending the corresponding priority queue.
  • CRC 4 bytes, which is cyclic redundancy check information.
  • Flow ID 2 bytes, which is the flow identifier.
  • the Flow ID is the identifier assigned by the terminal that supports the QCN mechanism.
  • the flow ID can be used to find the specific data flow caused by multiple data streams of the source terminal.
  • the network node may mark the data flow that causes congestion;
  • Times 2bit, indicating that the number of times the data stream corresponding to the Flow ID is congested is detected within a set period
  • Label 1 bit, marking the current flow control state.
  • the value can be Red or Green. According to the actual design, Red can take a value of 0 or 1, correspondingly Green is 1 or 0.
  • FIG. 5 is a schematic diagram of the working principle of the first embodiment of the present invention.
  • the QCN mechanism and the PFC mechanism are applied together, the network node E supports the QCN mechanism and the PFC mechanism; A and D, B and D, D and E, C and E, and F and E use PFC mechanism for flow control .
  • the working principle of the method in the first embodiment of the present invention is described in detail below with reference to the flow diagram 6.
  • S601 The PFC mechanism on the node E starts to work, that is, the node E performs PFC detection on the ingress port.
  • the node E detects that the ingress port is congested it marks the flow ID of the data flow Flow1 that caused the congestion, that is, FID1, and generates a PFC as shown in FIG.
  • the node E continues to perform PFC detection on the ingress port.
  • node E If congestion occurs on Flow1 in the set period T, and the number n of congestions of Flow1 is detected, node E generates PFC ⁇ , and sends the generated PFC ⁇ to the node along the uplink direction of the data flow Flow1.
  • the upstream node of E is node D.
  • the value of the Flow ID field in the PFC is FID1, and the value in the Times field is n. If n is smaller than the pre-set N_Red, the value of the Label field is Green. If n is greater than N_Red, the value of the Label field is Red.
  • the PFC mechanism on the node D does not detect that Flow1 is congested during the pause period, and the node D restores the data on the data stream Flow1 to the node E.
  • the node D restores the data on the data stream Flow1 to the node E.
  • the node D after the pause period ends, the node D also resumes transmitting the data on the data stream Flow1 to the node E; of course, the data transmission on the Flow1 can be resumed at the same time as or before the node D sends the CNM message. As long as it is after the end of the suspension period.
  • the node D pauses to send the data on the Flow1 to the node E during the set pause period, and adopts the pause mechanism in the PFC mechanism.
  • the backpressure enable vector Prioirty enable vector of the PFC frame will be the best for Flow1.
  • the E(N) corresponding to the priority queue N is set to 1, and the pause period Time(N) is set.
  • the node E pauses the data transmission of the priority queue N, and the duration is Time (N); therefore, other data streams of the priority queue N are also suspended.
  • the node D restores the data transmission of the priority queue N, including the data transmission of the above data stream Flow1.
  • the congestion of the data stream is detected by using the PFC mechanism on the ingress port of the network node, and corresponding processing is performed according to the severity of the congestion: the number of congestions of a certain data flow does not exceed the set value within a set period.
  • the congestion condition is sent to the uplink network node in the reverse direction of the data stream through the PFC, and the uplink network node pauses to send the data of the data stream during the pause period, thereby slowing local congestion, and when the uplink network node is suspended.
  • the source terminal of the data stream is notified by the QCN flow control mechanism to reduce the transmission rate of the data stream.
  • the uplink network node pauses to send the data stream.
  • the source terminal of the data stream can be notified by the QCN flow control mechanism to reduce the transmission rate of the data stream.
  • the source terminal receives the CNM message, it also starts a timer for determining whether the congestion condition is alleviated within the set recovery period; if the congestion is relieved, the transmission rate before the data stream is restored.
  • multiple network nodes may notify the source terminal to reduce the transmission rate of the same data stream in the above recovery period (as in the first embodiment, if congestion occurs, node A, node D, and node E are both The source terminal is notified to reduce the transmission rate of the data stream Flow1.
  • the source terminal reduces the transmission rate of the data stream when receiving the CNM message for the first time, and the source terminal may not further forward the CNM message received again during the recovery period. The rate is reduced, but the above recovery period is extended.
  • the network node that performs the PFC mechanism detection on the ingress port detects that the number of congestions of a certain data stream exceeds a set value within a set period
  • the network node sends the network node.
  • the PFC frame is sent to the uplink network node, and the uplink network node pauses to transmit the data of the data stream.
  • the uplink network node sends a CNM message to notify the source terminal of the data stream to reduce the data stream transmission rate through the QCN flow control mechanism.
  • the network node that performs the PFC mechanism detection on the ingress port may also send the PFC frame to the uplink network.
  • the network node causes the uplink network node to suspend transmission of data of the data stream; on the other hand, the network node directly sends a CNM message to the source terminal of the data stream to notify the source terminal to reduce the transmission rate of the data stream.
  • the PFC structure of Fig. 4 can be further improved and applied to the embodiments illustrated in Figs. 5 and 6 above, as well as to all other embodiments of the present invention.
  • the PFC can only include the Flow Identifier and Label fields, and does not include the Times field. It can also include only the Flow Identifier and Times fields, and does not include the Label field.
  • the node E only needs to record the number of times of congestion on Flow1 in the period T. n, you do not need to set N_Red and compare with n.
  • the times field in the received PFC ⁇ (that is, the number of times that node E detects congestion on Flow1 in period T).
  • n the node D detects the degree of congestion and the degree of congestion on the Flow1 by the PFC mechanism during the pause period to determine the degree of the race of the flow1 and determine the operation of the node D, such as n+m is greater than the set value to trigger the QCN flow.
  • the control mechanism sends a CNM message; or the CNM message may be sent when m is greater than the set value to trigger the QCN flow control mechanism.
  • the PFC ⁇ can also include only the Flow Identifier field, and does not include the Label and Times fields.
  • the node D After the node D receives the PFC sent by the node E, the node D only detects whether congestion and congestion occur on the Flow1 through the PFC mechanism during the pause period.
  • the number m is used to determine the degree of the game of the flow1 and determine the operation of the node D. If the value of m is greater than the set value, the QCN flow control mechanism is triggered to send the CNM message, or the number of times the flow1 is congested during the pause period may not be recorded. Send a CNM message.
  • Embodiment 2 of the present invention provides a method for congestion control, including:
  • the first network node performs priority-based flow control (PFC) detection on the ingress port, and detects that a certain data flow, such as Flow1, is congested within the set detection period, and obtains the flow identifier of Flow1.
  • PFC priority-based flow control
  • the first network node generates a PFC frame and sends the PFC frame to the second network node, where the flow identifier Flow ID of Flow1 is included;
  • the second network node performs congestion control on Flow1.
  • the foregoing PFC frame further includes congestion degree information
  • the second network node is configured to perform congestion control on the Flow1 according to the congestion degree information.
  • the congestion degree information is a parameter used to indicate the congestion severity of the data flow Flow1.
  • it may be expressed by a Label field or a Times field, or may be expressed by a Label field and a Times field.
  • the congestion can be first relieved by locally suspending the transmission of the data stream; of course, the number of congestions on Flow1 in the period T can be directly used. Judging the severity of congestion, the larger the value of n, the more serious the congestion.
  • the second network node performing congestion control on the flow1 according to the congestion degree information may include:
  • the second network node sends a congestion notification message (CNM) to the source terminal of the data flow Flow1, and notifies the source terminal to reduce the transmission rate of the data flow Flow1; or
  • CCM congestion notification message
  • the second network node When the congestion degree information indicates that the congestion is light, the second network node pauses to send the data of the data stream Flow1 to the first network node during the set pause period; the second network node may also enter the port pair data stream during the pause period.
  • Flow1 performs PFC detection: If the PFC detects that the data flow Flow1 is congested during the suspension period, the second network node may send a CNM message to the source terminal of the data flow Flow1, and notify the source terminal to reduce the transmission rate of the data flow Flow1.
  • the second network node resumes transmitting data of the data stream Flow1 to the first network node.
  • the first network node detects that the data flow Flow1 is seriously congested during the detection period (for example, when the number of congestions exceeds a set value or the cache occupancy rate is too high), the CNM message may be directly sent to the source of the data flow Flow1.
  • the terminal notifies the source terminal to reduce the transmission rate of the data stream.
  • the first embodiment and the second embodiment of the present invention improve the existing PFC mechanism and the PFC structure, so that when the network node performs the PFC mechanism detection, it can determine congestion detection of a specific data stream that is congested, and The congestion degree information is sent to the uplink node through the improved PFC.
  • the congestion is not serious, the transmission rate of the data stream is locally reduced first to alleviate the congestion; when the data stream still has congestion after the congestion is severe or the local congestion is congested, the source terminal of the data flow is notified by the QCN flow control mechanism to reduce the data. The rate at which the stream is sent.
  • the data stream can be flexibly processed according to the congestion condition, which can effectively cope with the problem of network data traffic change and congestion spread, and improve the efficiency of the entire network system.
  • Embodiment 3 of the present invention provides a network node 700, as shown in FIG.
  • the network node 700 includes:
  • the detecting module 701 is configured to perform priority-based flow control (PFC) detection on the ingress port, such as detecting that a certain data stream, such as Flow1, is congested within the set detection period, and obtaining the data stream.
  • PFC priority-based flow control
  • the PFC frame generating module 703 is configured to generate a PFC frame, where the flow identifier of the data stream Flow1 obtained by the detecting module 701 is included;
  • the PFC frame sending module 705 is configured to send a PFC frame generated by the PFC frame generating module 703, where the PFC frame is used to indicate that the network node that receives the PFC frame performs congestion control on the data stream Flow1.
  • the foregoing PFC frame further includes congestion degree information.
  • the congestion degree information is a parameter indicating the congestion severity of the data flow Flow1.
  • it may be expressed by a Label field or a Times field, or may be expressed by a Label field and a Times field.
  • the congestion can be alleviated by locally suspending the transmission of the data stream; of course, the number of times of congestion on Flow1 can be directly used in the set detection period.
  • n to determine the severity of congestion, the greater the value of n, the more serious congestion.
  • the network node may further include a CNM message sending module 707, configured to detect that the data flow Flow1 is severely congested during the detection period (for example, the number of times of congestion exceeds a set value or is slow When the storage occupancy rate is too high, the source terminal that sends the CNM message to the data stream notifies the source terminal to reduce the transmission rate of the data stream.
  • a CNM message sending module 707 configured to detect that the data flow Flow1 is severely congested during the detection period (for example, the number of times of congestion exceeds a set value or is slow
  • the source terminal that sends the CNM message to the data stream notifies the source terminal to reduce the transmission rate of the data stream.
  • the network node provided in the foregoing Embodiment 3 of the present invention can identify which data stream is congested and provide it to other network nodes to perform more flexible congestion control on the data stream; further, the congestion degree information can be sent to The uplink node firstly reduces the transmission rate of the data stream to reduce congestion when the congestion is not serious; when the data stream still appears to be congested after the congestion is severe or the local congestion is congested, the source terminal of the data flow is notified by the QCN mechanism to reduce the data transmission rate. .
  • the data stream is flexibly processed according to the congestion condition, which can effectively cope with the problem of network data traffic change and congestion spread, and improve the efficiency of the entire network system.
  • Embodiment 4 of the present invention provides a network node 800, as shown in FIG.
  • the network node 800 includes:
  • the receiving module 801 is configured to receive a priority-based flow control (PFC) frame, where the PFC frame includes a flow identifier of a certain data flow, such as Flow1;
  • PFC priority-based flow control
  • the congestion control module 803 is configured to perform congestion control on the data flow Flow1 according to the PFC frame received by the receiving module 801.
  • the PFC frame may further include congestion degree information; the congestion control module 803 performs congestion control on the data flow Flow1 according to the congestion degree information.
  • the congestion degree information is a parameter indicating the congestion severity of the data flow Flow1.
  • it may be expressed by a Label field or a Times field, or may be expressed by a Label field and a Times field.
  • the congestion can be first relieved by locally suspending the transmission of the data stream; of course, the number of times of congestion on the data flow Flow1 during the detection period can be directly used.
  • the severity of congestion the larger the value of n, the more serious the congestion.
  • the optional congestion control module 803 can also be used to suspend the transmission during the set pause period.
  • the network node 800 may further include: a sending module 805.
  • the congestion control module 803 is further configured to perform PFC detection on the data stream Flow1 at the ingress port during the pause period; if the data stream Flow1 is detected to be congested during the pause period, the sending module 805 is configured to send a congestion notification message (Congestion Notification Message, CNM) to the source terminal of the data stream Flow1, notifying the source terminal to reduce the transmission rate of the data stream Flow1.
  • CNM Congestion Notification Message
  • the congestion control module 803 resumes transmitting the data of the data stream Flow1.
  • the network node provided in the foregoing Embodiment 4 of the present invention can identify which data stream is congested according to the received PFC frame, and perform more flexible congestion control on the data flow according to the degree of congestion: firstly when the congestion is not serious The transmission rate of the data stream is reduced to alleviate the congestion; when the data stream still has congestion after the congestion is severe or the local congestion is congested, the source terminal of the data stream is notified by the QCN mechanism to reduce the data transmission rate.
  • the data stream is flexibly processed according to the congestion condition, which can effectively cope with the problem of network data traffic change and congestion spread, and improve the efficiency of the entire network system.
  • Embodiment 5 of the present invention provides a congestion control system. As shown in FIG. 9, the system includes a first network node and a second network node.
  • the first network node performs priority-based flow control (PFC) detection on the ingress port, and if a certain data stream, such as Flow1, is detected to be congested within a set detection period, the data stream is acquired. Flow ID of Flow1.
  • the first network node generates a PFC frame including the flow identifier of the data stream Flow1, and transmits the PFC frame to the second network node.
  • PFC priority-based flow control
  • the second network node performs congestion control on the data flow Flow1 according to the PFC.
  • the PFC frame may further include congestion degree information; and the second network node performs congestion control on the data flow Flow1 according to the congestion degree information.
  • the second network node according to the congestion control on the data flow Flow1 may include:
  • the second network node is configured to send a Congestion Notification Message (CNM) to the source terminal of the data flow Flow1, and notify the source terminal to reduce the transmission rate of the data flow Flow1.
  • CCM Congestion Notification Message
  • the second network node according to the congestion control of the data flow Flow1 may further include: the second network node suspending sending the data of the data flow Flow1 to the first network node during the set pause period.
  • the second network node may further perform PFC detection on the data flow Flow1 at the ingress port during the pause period;
  • the second network node If the data flow Flow1 is congested during the suspension period, the second network node sends a CNM message to the source terminal of the data flow Flow1, informing the source terminal to decrease the transmission rate of the data flow.
  • the second network node resumes transmitting data of the data stream Flow1 to the first network node.
  • the first network node may directly send the CNM message to the data stream when detecting that a serious congestion occurs in the set detection period (for example, when the number of congestion of the data flow Flow1 exceeds a set value or the cache occupancy rate is too high)
  • the source terminal notifies the source terminal to reduce the transmission rate of the data stream.
  • the congestion control system provided in the above fifth embodiment of the present invention can identify which data stream is sent. Congestion occurs and more flexible congestion control is performed according to the degree of congestion: when the congestion is not serious, the transmission rate of the data stream is locally reduced to alleviate the congestion; when the data stream still has congestion after the congestion is severe or the local congestion is congested, the notification is notified through the QCN mechanism.
  • the source terminal of the data stream reduces the transmission rate of the data stream.
  • the data stream is flexibly processed according to the congestion condition, which can effectively cope with the problem of network data traffic change and congestion spread, and improve the efficiency of the entire network system.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
  • connection may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the associated media.
  • a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

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Abstract

Un mode de réalisation de la présente invention concerne un procédé de régulation d'encombrement, comprenant : un premier nœud de réseau qui met en œuvre une détection de régulation de flux basée sur la priorité (PFC) pour un orifice d'entrée, et si un flux de données produisant un encombrement à l'intérieur d'une période de détection définie est détectée, une identification de flux du flux de données est obtenue ; le premier nœud de réseau génère une trame de PFC comprenant l'identification de flux du flux de données, et transmet la trame PFC à un second nœud de réseau, de manière à ordonner au second nœud de réseau de mettre en œuvre la régulation d'encombrement pour le flux de données. Le mode de réalisation de la présente invention permet au mécanisme de PFC de mettre en œuvre la détection d'encombrement pour le flux de données spécifique en améliorant le mécanisme de PFC existant, de transmettre le niveau d'encombrement à un nœud de liaison montante par l'intermédiaire de la trame de PFC améliorée, et de traiter le flux de données de manière souple en fonction d'une situation d'encombrement, gérant ainsi efficacement les problèmes de changement de trafic de données de réseau et de diffusion d'encombrement, et améliorant l'efficacité de l'ensemble du système de réseau. Les modes de réalisation de la présente invention concernent également un nœud de réseau, un système et un support de stockage informatique.
PCT/CN2014/093015 2014-12-04 2014-12-04 Procédé, dispositif et système de régulation d'encombrement WO2016086385A1 (fr)

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WO2019080866A1 (fr) * 2017-10-25 2019-05-02 华为技术有限公司 Procédé et dispositif de transmission de données et support de stockage informatique
US11165705B2 (en) 2017-10-25 2021-11-02 Huawei Technologies Co., Ltd. Data transmission method, device, and computer storage medium
CN109218308A (zh) * 2018-09-14 2019-01-15 上海赋华网络科技有限公司 一种基于智能网卡的数据高速安全交换方法
CN111385216A (zh) * 2018-12-29 2020-07-07 中兴通讯股份有限公司 基于pfc帧的拥塞控制方法、装置、系统及存储介质
CN111385216B (zh) * 2018-12-29 2023-11-07 中兴通讯股份有限公司 基于pfc帧的拥塞控制方法、装置、系统及存储介质
RU2772112C1 (ru) * 2018-12-29 2022-05-17 Зте Корпорейшн Способ и устройство для контроля перегрузки сети на базе кадра pfc, система и носитель данных
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CN111526095A (zh) * 2019-02-02 2020-08-11 华为技术有限公司 一种流量控制方法和装置
CN111526095B (zh) * 2019-02-02 2023-12-08 华为技术有限公司 一种流量控制方法和装置
EP3767885A1 (fr) * 2019-07-18 2021-01-20 Huawei Technologies Co., Ltd. Procédé, appareil et système permettant de localiser la cause profonde d'une anomalie de réseau et support d'enregistrement informatique
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US11206568B2 (en) 2019-09-19 2021-12-21 Realtek Semiconductor Corporation Router and routing method
TWI730476B (zh) * 2019-09-19 2021-06-11 瑞昱半導體股份有限公司 路由器及路由方法
CN112565096A (zh) * 2019-09-26 2021-03-26 瑞昱半导体股份有限公司 路由器及路由方法
WO2021217641A1 (fr) * 2020-04-30 2021-11-04 华为技术有限公司 Procédé de régulation d'encombrement, dispositif réseau et système
CN115462050A (zh) * 2020-04-30 2022-12-09 华为技术有限公司 一种拥塞控制方法、网络设备及系统
CN112134809A (zh) * 2020-09-16 2020-12-25 山东云海国创云计算装备产业创新中心有限公司 一种流量控制方法、装置、设备及可读存储介质
CN112134809B (zh) * 2020-09-16 2024-04-23 山东云海国创云计算装备产业创新中心有限公司 一种流量控制方法、装置、设备及可读存储介质
WO2022242170A1 (fr) * 2021-05-21 2022-11-24 华为技术有限公司 Procédé de traitement de données et dispositif associé
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