CN102255790A - Method and system for informing congestion control information - Google Patents
Method and system for informing congestion control information Download PDFInfo
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- CN102255790A CN102255790A CN2010101844447A CN201010184444A CN102255790A CN 102255790 A CN102255790 A CN 102255790A CN 2010101844447 A CN2010101844447 A CN 2010101844447A CN 201010184444 A CN201010184444 A CN 201010184444A CN 102255790 A CN102255790 A CN 102255790A
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Abstract
The invention discloses a method and a system for informing congestion control information. The method for informing congestion control information comprises the following steps: edge core network equipment of a layered network architecture receives congestion informing information, wherein the congestion informing information contains address information of a terminal causing congestion and congestion control information, and the edge core network equipment is the equipment on a core network edge; the edge core network equipment acquires the address information of the terminal causing congestion and the congestion control information from the congestion informing information; and the edge core network equipment sends the congestion control information to the terminal causing congestion according to the address information of the terminal causing congestion. The method provided by the invention is used for solving the problem of the prior art that the congestion control information cannot be sent to the terminal causing congestion, so as to eliminate the congestion in network.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of Notification Method and system of congestion control information.
Background technology
High speed development along with Internet technology, service traffics are increasing in the network, the user is also more and more higher for the requirement of network performance, meanwhile problem such as congested, the time-delay of network, packet loss also highlights day by day, at a high speed, the bag of low delay, no packet loss transmits the Ethernet for mass data transfers, especially to the Ethernet that is applied to data center be have challenging.
For making Ethernet become a kind of low time delay, " can't harm " transmission technology that has congestion management and flow control function.International a plurality of normal structures are to this research and formulate the solution that family ethernet is optimized, and wherein backward congestion notification is the solution that is proposed at the data center environment congestion problems.The main thought of this scheme is: when the core-network entities that has disposed congestion detection detects congested by the supervision to the outbound port formation, then create congestion notification message, by this message the Congestion Level SPCC of network is informed and to cause congested upstream network entity, make it reduce its data transfer rate, alleviate the congested of core-network entities with this.The application of this scheme is the deal with congestion situation targetedly, is the destination address of backward congestion notification message (being CNM message) by setting up to cause congested data source address, and then notice causes congested " guilty source " to reduce data transfer rate.
Yet in some layered network architecture, in PBB (Provider Backbone Bridge), when data are passed through this network, can encapsulate again Frame, purpose MAC (the Media Access Control) address that detects the congested backward congestion notification message that core-network entities produced (being CNM message) so must be the Frame source MAC (being the MAC Address of network B EB (Backbone Edge Bridge)) after the encapsulation, rather than the source address of real Frame, can cause like this backward congestion notification message (CNM message) accurately can't being delivered to and cause congested PBB overseas " guilty source ".
Fig. 1 is Frame and CNM message path and a frame format in the normal 802.1Q network.Under the normal condition, each terminal network entity of left side sends data by core net to terminal network entity 2, the core-network entities direct-connected with terminal network entity 2 is provided with congestion detection function, judgement is congested to be caused by terminal network entity 1 if detect, and then this entity is adjusted speed according to the Frame establishment CNM message informing terminal network entity 1 that terminal network entity 1 sends.The destination address of CNM message is the MAC Address of end entity 1, extract promptly source MAC1 the figure from the source address of Frame, the source address of CNM is the core-network entities MAC Address with congestion detection function, VLAN-TAG and CN-TAG directly extract from the source data frame, and CNM PDU unit is used to carry be used to indicate and causes congested end entity 1 to adjust the information of speed.CNM message set up the back by after the core net to back-pressure to causing congested end entity 1, notify its reduction data transfer rate.
Fig. 2 is applied to the situation of PBB network for this technology.Frame among the Frame that the terminal network entity sends such as Fig. 1, when this frame arrives PBB network edge BEB equipment, BEB equipment encapsulates again to it, encapsulation back frame format is shown in Frame among Fig. 2, its source address is the BEB device mac address, destination address is PBB network edge device address, and VLAN-TAG and I-tag are PBB network-specific information field, is only real source data content frame thereafter.When the core-network entities with congestion detection function detects congested, according to CNM message establishing rule, the destination address of CNM is for extracting the source address of Frame, it is the address of edge BEB, source address is himself, VLAN TAG is the VLAN TAG of PBB special use, and the extraction of CN-TAG also has problem, may be I-TAG as figure.The CNM message of its establishment will be sent to PBB edge BEB equipment like this, and can not find the real congested terminal network entity that causes, and then cause network congestion problem such as method to solve, serious packet loss appears, problems such as time-delay, this is that data center network institute is unacceptable.
Summary of the invention
Can't send to the problem that causes congested terminal and propose the present invention at the congestion control information in the correlation technique, for this reason, main purpose of the present invention is to provide a kind of Notification Method and system of congestion control information.
To achieve these goals, according to an aspect of the present invention, a kind of Notification Method of congestion control information is provided, it comprises: the edge equipment of the core network reception congestion notification message of layered network architecture, wherein, above-mentioned congestion notification message carries address information and the congestion control information that causes congested terminal, and above-mentioned edge equipment of the core network is the equipment at core network edge; Above-mentioned edge equipment of the core network obtains above-mentioned address information and the above-mentioned congestion control information that causes congested terminal from above-mentioned congestion notification message; Above-mentioned edge equipment of the core network sends to the above-mentioned congested terminal that causes according to the above-mentioned address information of congested terminal that causes with above-mentioned congestion control information.
Further, before the above-mentioned edge equipment of the core network reception congestion notification message, also comprise: above-mentioned congestion detection entity receives the source data frame that causes congested terminal to send through above-mentioned edge equipment of the core network by above-mentioned; Above-mentioned congestion detection entity detection occurs congested to network; Above-mentioned congestion detection entity generates above-mentioned congestion notification message according to above-mentioned source data frame; Above-mentioned congestion detection entity sends to the edge equipment of the core network with above-mentioned congestion notification message.
Further, above-mentioned congestion detection entity generates above-mentioned congestion notification message according to above-mentioned source data frame and comprises: above-mentioned congestion detection entity is filled into the top n byte in the above-mentioned source data frame in the MSDU field in the above-mentioned congestion notification message, wherein, an above-mentioned N byte comprises the CN-TAG field in the above-mentioned source data frame.
Further, above-mentioned congestion detection entity is arranged on the above-mentioned edge equipment of the core network.
Further, above-mentioned edge equipment of the core network obtains the above-mentioned address information of congested terminal and the above-mentioned congestion control information of causing and comprises from above-mentioned congestion notification message: above-mentioned edge equipment of the core network obtains source address parameter and the congestion control information parameter in the MSDU field in the above-mentioned congestion notification message, wherein, above-mentioned source address parameter is the above-mentioned address that causes congested terminal.
Further, above-mentioned edge equipment of the core network sends to above-mentioned congestion control information according to the above-mentioned address information that causes congested terminal and above-mentionedly causes congested terminal to comprise: above-mentioned edge equipment of the core network sends to the above-mentioned congested terminal that causes by message with above-mentioned congestion control information parameter, wherein, the destination address of above-mentioned message is the above-mentioned address that causes congested terminal.
To achieve these goals, according to a further aspect in the invention, a kind of reporting system of congestion control information is provided, it comprises: the edge equipment of the core network in the layered network architecture, congestion detection entity and cause congested terminal, wherein, above-mentioned edge equipment of the core network is the equipment at core network edge, above-mentioned edge equipment of the core network comprises: first receiver module, be used to receive congestion notification message from the congestion detection entity, wherein, above-mentioned congestion notification message carries address information and the congestion control information that causes congested terminal; Acquisition module is used for obtaining above-mentioned address information and the above-mentioned congestion control information that causes congested terminal from above-mentioned congestion notification message; First sending module is used for according to the above-mentioned address information of congested terminal that causes above-mentioned congestion control information being sent to the above-mentioned congested terminal that causes.
Further, above-mentioned acquisition module comprises: obtain submodule, be used for obtaining source address parameter and congestion control information parameter in the MSDU field of above-mentioned congestion notification message, wherein, above-mentioned source address parameter is the above-mentioned address that causes congested terminal; Message generates submodule, be used to generate by above-mentioned first sending module and send to the above-mentioned message that causes congested terminal, wherein, the destination address of above-mentioned message is the above-mentioned address that causes congested terminal, and the data field in the above-mentioned message comprises the congestion control information parameter.
Further, above-mentioned congestion detection entity comprises: second receiver module is used for the source data frame that causes congested terminal to send through above-mentioned edge equipment of the core network by above-mentioned; Detection module is used to detect entity detection and occurs congested to network; Generation module is used for top n byte with above-mentioned source data frame and is filled in the MSDU field in the above-mentioned congestion notification message, and wherein, an above-mentioned N byte comprises the CN-TAG field in the above-mentioned source data frame; Second sending module is used for above-mentioned congestion notification message is sent to the edge equipment of the core network.
Further, above-mentioned congestion detection entity is arranged on the above-mentioned edge equipment of the core network.
The present invention has following beneficial effect:
1) the edge equipment of the core network is by extracting congestion notification message, acquisition causes the address information and the congestion control information of congested terminal, thereby can and cause congested terminal to connect according to the address information that causes congested terminal, and congestion control information is sent to this cause congested terminal, like this, cause congested terminal to adjust transmission rate, so that eliminate congested in the network according to congestion control information.
2) the present invention can also be arranged on the edge equipment of the core network with being used to detect congested congestion detection entity, like this, need between congestion detection entity and edge equipment of the core network, not transmit congestion notification message, and the source data frame that can directly send according to terminal is set up communication link between edge equipment of the core network and terminal, thereby optimized flow process, made easily congestion control information to be sent to cause congested terminal.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to Frame and CNM message path and frame format in the 802.1Q network of correlation technique;
Fig. 2 is the schematic diagram according to Frame and CNM message path and frame format in the PBB network of correlation technique;
Fig. 3 is the flow chart according to the Notification Method of the congestion control information of the embodiment of the invention;
Fig. 4 is the schematic diagram of setting up CNM message again according to the embodiment of the invention;
Fig. 5 is the preferred schematic diagram according to the Notification Method of the congestion control information of the embodiment of the invention;
Fig. 6 is the schematic diagram according to the reporting system of the congestion control information of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 3 is the flow chart according to the Notification Method of the congestion control information of the embodiment of the invention.As shown in Figure 3, the Notification Method according to the congestion control information of the embodiment of the invention comprises the steps:
S302, the edge equipment of the core network reception congestion notification message of layered network architecture, wherein, above-mentioned congestion notification message carries address information and the congestion control information that causes congested terminal, and above-mentioned edge equipment of the core network is the equipment at core network edge;
S304, above-mentioned edge equipment of the core network obtain above-mentioned address information and the above-mentioned congestion control information that causes congested terminal from above-mentioned congestion notification message;
S306, above-mentioned edge equipment of the core network sends to the above-mentioned congested terminal that causes according to the above-mentioned address information of congested terminal that causes with above-mentioned congestion control information.
In embodiments of the present invention, the edge equipment of the core network is by extracting congestion notification message, acquisition causes the address information and the congestion control information of congested terminal, thereby can according to the address information that causes congested terminal with cause congested terminal to connect, and congestion control information sent to this cause congested terminal.Like this, cause congested terminal to adjust transmission rate, so that eliminate congested in the network according to congestion control information.
Preferably, before the described edge equipment of the core network reception congestion notification message, also comprise: described congestion detection entity receives the source data frame that causes congested terminal to send through described edge equipment of the core network by described; Described congestion detection entity detection occurs congested to network; Described congestion detection entity generates described congestion notification message according to described source data frame; Described congestion detection entity sends to the edge equipment of the core network with described congestion notification message.
Preferably, described congestion detection entity generates described congestion notification message according to described source data frame and comprises: described congestion detection entity is filled into the top n byte in the described source data frame in the MSDU field in the described congestion notification message, wherein, a described N byte comprises the CN-TAG field in the described source data frame.
As mentioned above, the top n byte in the described source data frame is filled in the MSDU field in the described congestion notification message, like this, is convenient to the edge equipment of the core network and extracts and obtain address information and the corresponding control information that causes congested terminal.
Preferably, described congestion detection entity is arranged on the described edge equipment of the core network.
Be arranged on the edge equipment of the core network by being used to detect congested congestion detection entity, make and need between congestion detection entity and edge equipment of the core network, not transmit congestion notification message, and the source data frame that can directly send according to terminal is set up communication link between edge equipment of the core network and terminal, thereby optimized flow process, made more easily congestion control information to be sent to cause congested terminal.
Preferably, described edge equipment of the core network obtains the described address information of congested terminal and the described congestion control information of causing and comprises from described congestion notification message: described edge equipment of the core network obtains source address parameter and the congestion control information parameter in the MSDU field in the described congestion notification message, wherein, described source address parameter is the described address that causes congested terminal.
Preferably, described edge equipment of the core network sends to described congestion control information according to the described address information that causes congested terminal and describedly causes congested terminal to comprise: described edge equipment of the core network sends to the described congested terminal that causes by message with described congestion control information parameter, wherein, the destination address of described message is the described address that causes congested terminal.
Below in conjunction with the drawings and specific embodiments the technical scheme in the embodiment of the invention is further elaborated.
Fig. 4 is the schematic diagram of setting up CNM message again according to the embodiment of the invention.As shown in Figure 4, the congestion detection entity detection in the core network generates congestion notification message after congested.(be also referred to as CNM message in establishment backward congestion notification message, perhaps, original CNM message) time, to cause the top n byte of congested terminal data cell in the source data frame (form of Frame as shown in Figure 4) that core network device sends to be filled into encapsulates in (Encapsulation) MSDU field among the CNM PDU, wherein, the top n byte should comprise the CN-TAG field in the source data frame at least.For example, in the present embodiment, as shown in Figure 4, encapsulation MSDU field comprises: the I-Tag from the source data frame (6 bytes), C-DA (6 bytes) are to load ethernet type (PayloadEthertype), data load (Data Payload), wherein, comprise the CN-Tag field.Preferably, in the present embodiment, the encapsulation MSDU of this moment is arranged in the CNM load (CNM Payload) of CNM message, and is concrete, and encapsulation MSDU is " preceding 64 bytes of sample data frames (First 64 Bytes of the Sampled the DataFrame) " field in the CNM load.
Preferably, the Flow identifier (being contained in CN-TAG) of CNM message fills with 0.With shown in the top, the source data frame begins to be extracted from the I-TAG field and copies to CNM message encapsulation MSDU field as the dotted line among Fig. 4.The main purpose of doing like this is the useful information that necessity is provided for the reconstruction of follow-up CNM message.
The backward congestion notification message CNM that produces when the core net network entity arrives the edge core network device (as the core network device F among Fig. 5) with congestion notification IWF, this edge core network device is extraction source address parameter and congestion control information parameter from encapsulation MSDU, again set up CNM message (as the dotted line among Fig. 4 with shown in the lower part) according to the parameter of being extracted then, and the CNM message that this is set up again sent to cause congested terminal.Again the process of setting up CNM message may further comprise the steps:
1) for the network (as the PBB network) that changes former Frame MAC Address: the destination address of original backward congestion notification message CNM is the MAC Address of edge core network device (BEB address).Like this, after original CNM message arrives this edge core network device, the edge core network device extracts source address parameter in the encapsulation MSDU field in the original CNM message as the target MAC (Media Access Control) address of the new CNM message of setting up, the MAC Address that will have this edge core network device as the source address of the new CNM message of setting up (for example, as shown in Figure 4, DA=C-SA, SA=MAC of switch withinterworking function).
For other networks that do not change former Frame MAC Address (as the PB network): source address and destination address parameter constant.
2) extract (as shown in Figure 4, vlan-id=c-vlan-id) in the encapsulation MSDU field of vlan_identifier (vlan-id as shown in Figure 4) from the original CNM that receives of the new CNM message of setting up;
3) priority parameters is to be the priority of core network device congestion detection physical arrangements (as shown in Figure 4 " priority=prio configured for cp ") on this function port;
4) the encapsulation precedence field encapsulates among the MSDU from the original CNM that receives and extracts, and is constant as then not keeping initial value.
If can in the encapsulation MSDU field in the original CNM message that receives, find CN-TAG, wherein Flow identifier (Flow id as shown in Figure 4) value is extracted into the CN-TAG of new generation CNM message, otherwise fill (CN-Tag (Flow id=C-CN-Tag/0) as shown in Figure 4) with 0;
5) will receive data in the CNM load in the original CNM message copies in the CNM load in the CNM message of new establishment.Then, I-Tag field in the encapsulation MSDU field in the CNM load in the CNM message of newly setting up is deleted to the CN-TAG field, the remainder filling is new corresponding field, and reduces the length (Encapsulated Frame Length) of the encapsulated frame in the CN-TAG field accordingly.Like this, newly " the Sampled Data Frame " field in the CNM load in the CNM message of setting up comprises: load ethernet type (Payload Ethertype) (2 bytes) and data load (Data Payload) (38 bytes).
Fig. 5 is the preferred schematic diagram according to the Notification Method of the congestion control information of the embodiment of the invention.A among the figure, B, C, four terminal equipments of D all by PBB to the E equipment sending data, the equipment I in the PBB network has congestion detection function, equipment F has congestion notification IWF of the present invention.Hypothesis is congested in the present embodiment is caused by terminal equipment A.Frame and CNM frame format are as shown in the figure between device A and the I: 1) device A is sent normal data frames; 2) this Frame is encapsulated again by network edge device when entering the PBB network; 3) core network device I detects congested establishment CNM message in order to notice A reduction transmission rate, has carried relevant useful information in the initial data frame of being sent by A in this message, as source address, destination address, and VLAN TAG CN-tag etc.; 4) behind the CNM message arrival equipment F that equipment I sends, by the congestion notification IWF, extract the relevant information that it carries, setting up again with the device A is the CNM message of destination address, adjusts speed in order to announcement apparatus A.
The present invention also provides a kind of reporting system that goes for the congestion control information of above-mentioned Notification Method, as shown in Figure 6, the reporting system of this congestion control information comprises: the edge equipment of the core network 602 in the layered network architecture, congestion detection entity 604 and cause congested terminal 606, wherein, described edge equipment of the core network 602 is the equipment at core network edge.
In the present embodiment, described edge equipment of the core network 602 comprises: first receiver module 6021, acquisition module 6022, first sending module 6023.
In working order down, the congestion notification message that first receiver module 6021 receives from the congestion detection entity, wherein, described congestion notification message carries address information and the congestion control information that causes congested terminal; Then, acquisition module 6022 obtains described address information and the described congestion control information that causes congested terminal from described congestion notification message; Then, first sending module 6023 sends to the described congested terminal 606 that causes according to the described address information of congested terminal that causes with described congestion control information.
In this preferred embodiment, the edge equipment of the core network is by extracting congestion notification message, acquisition causes the address information and the congestion control information of congested terminal, thereby can according to the address information that causes congested terminal with cause congested terminal to connect, and congestion control information sent to this cause congested terminal.Like this, cause congested terminal to adjust transmission rate, so that eliminate congested in the network according to congestion control information.
Preferably, above-mentioned acquisition module 6022 comprises: obtain submodule, be used for obtaining source address parameter and congestion control information parameter in the MSDU field of described congestion notification message, wherein, described source address parameter is the described address that causes congested terminal; Message generates submodule, be used to generate by described first sending module 6023 and send to the described message that causes congested terminal, wherein, the destination address of described message is the described address that causes congested terminal, and the data field in the described message comprises the congestion control information parameter.
Preferably, described congestion detection entity 604 comprises: second receiver module 6041 is used for the source data frame that causes congested terminal to send through described edge equipment of the core network by described; Detection module 6042 is used to detect entity detection and occurs congested to network; Generation module 6043 is used for top n byte with described source data frame and is filled in the MSDU field in the described congestion notification message, and wherein, a described N byte comprises the CN-TAG field in the described source data frame; Second sending module 6044 is used for described congestion notification message is sent to the edge equipment of the core network.
As mentioned above, the top n byte in the described source data frame is filled in the MSDU field in the described congestion notification message, like this, is convenient to the edge equipment of the core network and extracts and obtain address information and the corresponding control information that causes congested terminal.
Preferably, described congestion detection entity 604 is arranged on the described edge equipment of the core network 602.
Be arranged on the edge equipment of the core network by being used to detect congested congestion detection entity, make and need between congestion detection entity and edge equipment of the core network, not transmit congestion notification message, and the source data frame that can directly send according to terminal is set up communication link between edge equipment of the core network and terminal, thereby optimized flow process, made more easily congestion control information to be sent to cause congested terminal.
Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the Notification Method of a congestion control information is characterized in that, comprising:
The edge equipment of the core network reception congestion notification message of layered network architecture, wherein, described congestion notification message carries address information and the congestion control information that causes congested terminal, and described edge equipment of the core network is the equipment at core network edge;
Described edge equipment of the core network obtains described address information and the described congestion control information that causes congested terminal from described congestion notification message;
Described edge equipment of the core network sends to the described congested terminal that causes according to the described address information of congested terminal that causes with described congestion control information.
2. method according to claim 1 is characterized in that, before the described edge equipment of the core network reception congestion notification message, also comprises:
Described congestion detection entity receives the source data frame that causes congested terminal to send through described edge equipment of the core network by described;
Described congestion detection entity detection occurs congested to network;
Described congestion detection entity generates described congestion notification message according to described source data frame;
Described congestion detection entity sends to the edge equipment of the core network with described congestion notification message.
3. method according to claim 2 is characterized in that, described congestion detection entity generates described congestion notification message according to described source data frame and comprises:
Described congestion detection entity is filled into the top n byte in the described source data frame in the MSDU field in the described congestion notification message, and wherein, a described N byte comprises the CN-TAG field in the described source data frame.
4. method according to claim 2 is characterized in that, described congestion detection entity is arranged on the described edge equipment of the core network.
5. method according to claim 1 is characterized in that, described edge equipment of the core network obtains the described address information of congested terminal and the described congestion control information of causing and comprises from described congestion notification message:
Described edge equipment of the core network obtains source address parameter and the congestion control information parameter in the MSDU field in the described congestion notification message, and wherein, described source address parameter is the described address that causes congested terminal.
6. method according to claim 5 is characterized in that, described edge equipment of the core network sends to described congestion control information according to the described address information that causes congested terminal and describedly causes congested terminal to comprise:
Described edge equipment of the core network sends to the described congested terminal that causes by message with described congestion control information parameter, and wherein, the destination address of described message is the described address that causes congested terminal.
7. the reporting system of a congestion control information, it is characterized in that, comprising: the edge equipment of the core network in the layered network architecture, congestion detection entity and cause congested terminal, wherein, described edge equipment of the core network is the equipment at core network edge, and described edge equipment of the core network comprises:
First receiver module is used to receive the congestion notification message from the congestion detection entity, and wherein, described congestion notification message carries address information and the congestion control information that causes congested terminal;
Acquisition module is used for obtaining described address information and the described congestion control information that causes congested terminal from described congestion notification message;
First sending module is used for according to the described address information of congested terminal that causes described congestion control information being sent to the described congested terminal that causes.
8. system according to claim 7 is characterized in that, described acquisition module comprises:
Obtain submodule, be used for obtaining source address parameter and congestion control information parameter in the MSDU field of described congestion notification message, wherein, described source address parameter is the described address that causes congested terminal;
Message generates submodule, be used to generate by described first sending module and send to the described message that causes congested terminal, wherein, the destination address of described message is the described address that causes congested terminal, and the data field in the described message comprises the congestion control information parameter.
9. system according to claim 7 is characterized in that, described congestion detection entity comprises:
Second receiver module is used for the source data frame that causes congested terminal to send through described edge equipment of the core network by described;
Detection module is used to detect entity detection and occurs congested to network;
Generation module is used for top n byte with described source data frame and is filled in the MSDU field in the described congestion notification message, and wherein, a described N byte comprises the CN-TAG field in the described source data frame;
Second sending module is used for described congestion notification message is sent to the edge equipment of the core network.
10. system according to claim 7 is characterized in that, described congestion detection entity is arranged on the described edge equipment of the core network.
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| CN2010101844447A CN102255790A (en) | 2010-05-18 | 2010-05-18 | Method and system for informing congestion control information |
| PCT/CN2011/071652 WO2011143968A1 (en) | 2010-05-18 | 2011-03-09 | Method and system for notifying congestion control information |
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| CN102891803A (en) * | 2012-10-10 | 2013-01-23 | 华为技术有限公司 | Congestion processing method and network device |
| CN103078964A (en) * | 2012-12-21 | 2013-05-01 | 浙江宇视科技有限公司 | Method and device capable of establishing business between NVC (Network Video Client) equipment and NVT (Network Video Transmitter) equipment |
| WO2016033742A1 (en) * | 2014-09-02 | 2016-03-10 | 华为技术有限公司 | Data transmission method and device |
| CN106330742A (en) * | 2015-06-23 | 2017-01-11 | 华为技术有限公司 | Flow control method and network controller |
| CN107493238A (en) * | 2016-06-13 | 2017-12-19 | 华为技术有限公司 | A kind of method for controlling network congestion, equipment and system |
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| CN102594676B (en) * | 2012-02-13 | 2015-06-17 | 福建星网锐捷网络有限公司 | Bridge port expansion network and congestion control method thereof, port expander (PE) and control bridge |
| CN102891803A (en) * | 2012-10-10 | 2013-01-23 | 华为技术有限公司 | Congestion processing method and network device |
| CN102891803B (en) * | 2012-10-10 | 2015-05-13 | 华为技术有限公司 | Congestion processing method and network device |
| CN103078964A (en) * | 2012-12-21 | 2013-05-01 | 浙江宇视科技有限公司 | Method and device capable of establishing business between NVC (Network Video Client) equipment and NVT (Network Video Transmitter) equipment |
| US10798605B2 (en) | 2014-09-02 | 2020-10-06 | Huawei Technologies Co., Ltd. | Message transmission method and apparatus |
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| CN105900377B (en) * | 2014-09-02 | 2019-10-18 | 华为技术有限公司 | A kind of method and apparatus transmitting data |
| CN110708257A (en) * | 2014-09-02 | 2020-01-17 | 华为技术有限公司 | Method and equipment for transmitting data |
| WO2016033742A1 (en) * | 2014-09-02 | 2016-03-10 | 华为技术有限公司 | Data transmission method and device |
| CN110278583B (en) * | 2014-09-02 | 2021-10-01 | 华为技术有限公司 | Method and equipment for transmitting data |
| CN110708257B (en) * | 2014-09-02 | 2023-02-28 | 华为技术有限公司 | Method and equipment for transmitting data |
| US11627488B2 (en) | 2014-09-02 | 2023-04-11 | Huawei Technologies Co., Ltd. | Message transmission method and apparatus |
| CN106330742A (en) * | 2015-06-23 | 2017-01-11 | 华为技术有限公司 | Flow control method and network controller |
| CN107493238A (en) * | 2016-06-13 | 2017-12-19 | 华为技术有限公司 | A kind of method for controlling network congestion, equipment and system |
| US11115339B2 (en) | 2016-06-13 | 2021-09-07 | Huawei Technologies Co., Ltd. | Network congestion control method, device, and system |
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