CN101789949A - Method and router equipment for realizing load sharing - Google Patents
Method and router equipment for realizing load sharing Download PDFInfo
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- CN101789949A CN101789949A CN201010112784A CN201010112784A CN101789949A CN 101789949 A CN101789949 A CN 101789949A CN 201010112784 A CN201010112784 A CN 201010112784A CN 201010112784 A CN201010112784 A CN 201010112784A CN 101789949 A CN101789949 A CN 101789949A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/563—Data redirection of data network streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/564—Enhancement of application control based on intercepted application data
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Abstract
The invention discloses a method for realizing load sharing, which comprises the following steps: obtaining a load sharing strategy and generating a load sharing link table; using a load sharing error counting value in an error counter for finding the load sharing link table when the load sharing strategy is based on a message route selection and can generate load sharing error; obtaining next hop and outlet interface information; forwarding the message according to the next hop and outlet interface information in the load sharing link table; and forwarding the message according to the next hop and outlet interface information in the load sharing link table. The invention simultaneously discloses router equipment for realizing the load sharing. According to the technical scheme of the invention, high efficiency forwarding of the message can be realized.
Description
Technical field
The present invention relates to IP message retransmission technique field, relate in particular to a kind of method and routing device of realizing load sharing.
Background technology
In equipment such as router, switch, usually when same purpose IP message is transmitted, outgoing interface in the routing table that finds according to purpose IP all is identical, that is: all flows all send to next equipment by next jumping in the routing table and outgoing interface, so, when flow surpassed interface bandwidth or is subjected to traffic management, partial data can be routed device equipment and abandon, thereby influences user's regular traffic.For reduce loss of data may, can be when transmitting the data traffic of identical purpose IP be assigned to by certain strategy on a plurality of different links, finally converge to common target device again, Here it is load sharing.
The routing policy of load sharing generally has two kinds: first kind, be that flow with identical purpose IP is evenly distributed on all load sharing links, this routing policy be fit to use to the less demanding occasion of flow order-preserving, advantage is that flow is definitely balanced, shortcoming is exactly that message sequence can not guarantee, as shown in Figure 1, the message that purpose IP is all router B can be evenly distributed to three links and be forwarded to router B, but because of forwarding is different by the used time of different links, therefore, the order that message arrives behind the router B may change, and the user can send the request that message is retransmitted after receiving out of order message, and therefore network service quality can reduce; Second kind, be to select link by traffic characteristic, the message of identical purpose IP is according to port numbers, signature identification is flowed in not generating on an equal basis of protocol type, the corresponding load sharing link of each stream signature identification, guarantee that thus the identical service traffics of user walk identical link, reduced the possibility of message sequence entanglement, service quality is improved, but, same shortcoming is: when a certain service traffics account for bandwidth ratio more for a long time, the load sharing effect of link can not get embodying, equally as shown in Figure 1, the identical purpose IP message of supposing router B then may be walked link one by User Datagram Protocol (UDP, User Datagram Protocol) message only by protocol type classification routing, transmission control protocol (TCP, Transmission Control Protocol) message is walked link two, thereby has guaranteed same protocol type message selection same link, reduces the possibility of packet out-ordering.
In the existing load sharing implementation method, the even routing mode that no matter is based on message also is based on the routing mode of stream signature identification, all need sequence of message number, or random number, or the message flow signature identification corresponds to a link of load sharing, the general method of using the stream signature identification to the number of links complementation, for the processor that does not have the complementation computing module, realize that with software this algorithm is to account for very much dos command line DOS, for network processing unit, if a message certain algorithm in handling process takies too much dos command line DOS, can cause the router device forwarding performance to reduce.
In addition, if the maximum magnitude of sequence of message that uses number or random number is not the multiple of load sharing number of links, when then using the even routing mode based on message, flow can produce error, can't be evenly distributed to fully on each link.As shown in Figure 1, when the sequence of message scope is 0-65535 (counter of 16Bits), the load sharing link is the outgoing interface of three same band as shown in Figure 1, message is when calculating routing, number to 3 complementations, remainder result is 0 meeting than remainder result is 1,2 many 1, therefore with sequence of message, many 1 of the message meeting of selection link one, the certain error of meeting generation after long-time the forwarding; When the sequence of message scope was more for a short time, error can be more obvious.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and routing device of realizing load sharing, can directly select next jumping and the outgoing interface information transmitted, and the message that produces the inhomogeneous error of link selection is transmitted, thereby guarantee that high efficiency, high-quality message transmit.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method that realizes load sharing, comprising:
Obtain the load sharing strategy and generate the load sharing link table, when the load sharing strategy is based on the message routing and can produces the load sharing error, load sharing error count value in the use error counter is searched the load sharing link table, obtains next jumping and outgoing interface information;
E-Packet according to next jumping in the described load sharing link table and outgoing interface information.
In the such scheme, describedly obtain the load sharing strategy and generate after the load sharing link table, this method also comprises:
After receiving the message of forwarding, generate sequence of message number according to packet counting, generate message identification according to purpose IP and protocol type, purpose IP according to message searches routing device, obtains corresponding route information table, judges whether there is the load sharing mark in the described route information table, if described load sharing mark is arranged, then determine to carry out load sharing,, then determine not carry out load sharing if there is not described load sharing mark.
In the such scheme, describedly determine to carry out after the load sharing, this method also comprises:
According to the load sharing policy tag in the route information table, judge that being based on message routing mode also is based on the stream routing mode; If based on message routing mode, judge whether to produce the load sharing error.
In the such scheme, this method further comprises: when described load sharing strategy is based on the message routing and can produce the load sharing error or when the load sharing strategy is based on stream routing, search described load sharing link table according to message identification.
In the such scheme, described obtaining after next jumping and the outgoing interface information, this method also comprises: described load sharing error count value increases by 1.
In the such scheme, described obtain the load sharing strategy and generate the load sharing link table be specially:
IP according to the purpose routing device generates route information table, when having load sharing, obtain the load sharing strategy that the user disposes, in described route information table, form load sharing mark and load sharing policy tag automatically, obtain the ratio of sharing of each outgoing interface in the load sharing link table according to the bandwidth of each outgoing interface, according to described load sharing strategy, load sharing mark, load sharing LI(link interface) bandwidth ratio, generate the load sharing link table.
The present invention also provides a kind of routing device of realizing load sharing, comprising: load sharing configuration module, generation module, forwarding module; Wherein,
The load sharing configuration module is used for configuration load and shares strategy;
Generation module is used for load sharing strategy and routing iinformation according to described load sharing configuration module configuration, generates the load sharing link table;
Forwarding module, be used for when described load sharing strategy is based on the message routing and can produces the load sharing error, load sharing error count value in the use error counter is searched the load sharing link table that described generation module generates, and E-Packets according to next jumping in the described load sharing link table and outgoing interface information.
In the such scheme, this equipment also comprises the route information table generation module, is used for generating route information table according to the IP of purpose routing device.
In the such scheme, the detailed process that described generation module generates the load sharing link table is:
Route information table according to the generation of route information table generation module, when having load sharing, obtain the load sharing strategy that the user disposes, in described route information table, form load sharing mark and load sharing policy tag automatically, obtain the ratio of sharing of each outgoing interface in the load sharing link table according to the bandwidth of each outgoing interface, according to described load sharing strategy, load sharing mark, load sharing LI(link interface) bandwidth ratio, generate the load sharing link table.
The method of realization load sharing provided by the present invention and routing device can directly be selected next jumping and the outgoing interface information transmitted, have reduced the computing time of selecting link when transmitting greatly, guarantee the efficient forwarding of data forwarding passage; And load sharing link table and route information table are separated, increased the flexibility of list item management, reduce the coupling of route and load sharing, when routing iinformation or load sharing relevant configuration and link information change, safeguarded respectively, improved the stability and high efficiency of system.Simultaneously, under the situation that does not have complementation to calculate, utilize the method for error accumulation counting to calculate the error that when the message routing, produces, improved the performance when router device is transmitted, thereby improved the service quality of load sharing.
Description of drawings
Fig. 1 is that existing load sharing is used the networking schematic diagram;
Fig. 2 is the exemplary plot of load sharing link table of the present invention;
Fig. 3 realizes the schematic flow sheet of the method for load sharing for the present invention;
Fig. 4 realizes the structural representation of the routing device of load sharing for the present invention.
Embodiment
Basic thought of the present invention is: when the load sharing strategy is based on the message routing and produces the load sharing error, load sharing error count value in the use error counter is searched the load sharing link table, obtain next jumping and outgoing interface information, and E-Packet according to next jumping that obtains and outgoing interface information.
Below by drawings and the specific embodiments the present invention is described in further detail again.
Fig. 3 is the schematic flow sheet that the present invention realizes the method for load sharing, and as shown in Figure 3, a kind of method of load sharing that realizes provided by the invention may further comprise the steps:
Step 301 is obtained the load sharing strategy and is generated the load sharing link table;
Concrete, IP according to the purpose routing device generates route information table, when having load sharing, obtain the load sharing strategy that the user disposes, in route information table, form load sharing mark and load sharing policy tag automatically, can obtain the ratio of sharing of each outgoing interface in the load sharing link table according to the bandwidth of each outgoing interface, according to load sharing strategy, load sharing mark, load sharing LI(link interface) bandwidth ratio, generate the load sharing link table; When load sharing link relation changed, the load sharing link table need upgrade outgoing interface and next hop information.For example, as shown in Figure 2, link one is the 1G bandwidth, and link two is the 1G bandwidth, and link three is the 10G bandwidth, and then the ratio of sharing of three links is 1: 1: 10 in the load sharing link table.
Here, 1024 link tables can be deposited in load sharing link table space, therefore, according to the ratio that obtains, fill to 1024 link table entry space circulations successively in order, full up to 1024 table spaces fillings, comprise next jumping and outgoing interface information in each clauses and subclauses of load sharing link table; The load sharing strategy comprises: be to adopt based on the routing mode of stream or adopt routing mode based on message when needing load sharing; Load sharing mark in the route information table is whether the routing iinformation according to purpose IP meets the mark that the load sharing condition generates, if the corresponding same purpose IP of multilink just satisfies the load sharing condition.Wherein, purpose IP can be Ipv4, also can make Ipv6.
Step 302 generates sequence of message number and message identification, and judges whether the load sharing mark is arranged in the route information table, if the load sharing mark is arranged, then execution in step 303, if there is not the load sharing mark, then execution in step 307;
Concrete, after receiving the message that needs to transmit, generate sequence of message number according to packet counting, generate message identification according to purpose IP and protocol type, entry index in sequence of message number and all corresponding load sharing link table of message identification, can direct index to the clauses and subclauses of load sharing link table, thereby obtain next jumping, the outgoing interface of corresponding load sharing link table;
Purpose IP according to message searches routing device, obtain corresponding route information table, judge and whether have the load sharing mark in the route information table, if the load sharing mark is arranged, expression need be carried out load sharing, and then execution in step 303, if there is not the load sharing mark, expression does not need to carry out load sharing, and then execution in step 307.
Whether step 303 judges the load sharing strategy based on message routing mode, if based on message routing mode, then execution in step 304, and if not based on message routing mode, then execution in step 306;
Concrete, according to the load sharing policy tag in the route information table, judge that being based on message routing mode also is based on the stream routing mode, if based on message routing mode, then execution in step 304, if based on the stream routing mode, then execution in step 306;
Step 304 judges whether to produce the load sharing error, if can produce error, then execution in step 305, if can not produce error, then execution in step 306;
Concrete, according to the load sharing link of sequence of message correspondence, judge whether to produce the load sharing error; As shown in Figure 2, when last four links of sequence of message correspondence, transmit if continue to use link in these four links to carry out message, carrying out link that message transmits can how the chance that once E-Packets than other links, will cause the load sharing error, execution in step 305 in this case; If do not use the link in these four links to transmit, just can not produce error, execution in step 306 in this case.
Step 305, the load sharing error count value of use error counter is searched the load sharing link table, and load sharing error count value adds 1;
Concrete, when judging will produce the load sharing error time, search the load sharing link table according to the load sharing error count value of the error counter of this moment, find the link corresponding in the corresponding load sharing link table after, obtain next jumping, outgoing interface.For example, as shown in Figure 2, when last four links of sequence of message correspondence, if continue to use that in these four links next jumps 1, outlet 1 link carries out message and transmit and will produce error, at this moment the load sharing error count value of error counter is 1; Load sharing error count value according to error counter finds link 1 in the load sharing link table, obtain next jumping, the outgoing interface of link 1; The load sharing error count value of error counter adds 1 then, and this moment, the load sharing error count value of error counter was 2.
Here, error counter can utilize the register in the chip, obtains load sharing error count value by the count value that reads in the register.
Step 306 is searched the load sharing link table according to message identification;
Concrete, according to the message identification that produces in the step 302, search the link in the load sharing link table corresponding with it, obtain next jumping and outgoing interface information in the load sharing link table; The message of transmitting if desired has the same message identification, and the link in the load sharing link table of these message correspondences also is the same so;
Step 307 E-Packets according to next jumping in the route information table and outgoing interface information, finishes current handling process;
Step 308 E-Packets according to next jumping in the load sharing link table and outgoing interface information.
For realizing said method, the present invention also provides a kind of routing device of realizing load sharing, and as shown in Figure 4, this equipment comprises: load sharing configuration module 41, generation module 42, forwarding module 43; Wherein,
Load sharing configuration module 41 is used for configuration load and shares strategy;
Wherein, the load sharing strategy is: when needs carry out load sharing, be based on message routing mode and also be based on the stream routing mode;
Generation module 42 is used for load sharing strategy and routing iinformation according to 41 configurations of load sharing configuration module, generates the load sharing link table;
Forwarding module 43, be used for when the load sharing strategy is based on the message routing and can produces the load sharing error, load sharing error count value in the use error counter is searched the load sharing link table that generation module 42 generates, and E-Packets according to next jumping in the load sharing link table and outgoing interface information;
Here, when E-Packeting, need load sharing error count value is increased by 1;
This routing device can further include: route information table generation module 44 is used for generating route information table according to the IP of purpose routing device;
In route information table, can form load sharing mark and load sharing policy tag automatically, according to the bandwidth of each outgoing interface, can obtain the ratio of sharing of each outgoing interface in the load sharing link table;
The detailed process that generation module 42 generates the load sharing link table is: according to the route information table of route information table generation module 44 generations, when having load sharing, obtain the load sharing strategy that the user disposes, in described route information table, form load sharing mark and load sharing policy tag automatically, obtain the ratio of sharing of each outgoing interface in the load sharing link table according to the bandwidth of each outgoing interface, according to described load sharing strategy, load sharing mark, load sharing LI(link interface) bandwidth ratio, generate the load sharing link table.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a method that realizes load sharing is characterized in that, this method comprises:
Obtain the load sharing strategy and generate the load sharing link table, when the load sharing strategy is based on the message routing and can produces the load sharing error, load sharing error count value in the use error counter is searched the load sharing link table, obtains next jumping and outgoing interface information;
E-Packet according to next jumping in the described load sharing link table and outgoing interface information.
2. method according to claim 1 is characterized in that, describedly obtains the load sharing strategy and generates after the load sharing link table, and this method also comprises:
After receiving the message of forwarding, generate sequence of message number according to packet counting, generate message identification according to purpose IP and protocol type, purpose IP according to message searches routing device, obtains corresponding route information table, judges whether there is the load sharing mark in the described route information table, if described load sharing mark is arranged, then determine to carry out load sharing,, then determine not carry out load sharing if there is not described load sharing mark.
3. method according to claim 2 is characterized in that, describedly determines to carry out after the load sharing, and this method also comprises:
According to the load sharing policy tag in the route information table, judge that being based on message routing mode also is based on the stream routing mode; If based on message routing mode, judge whether to produce the load sharing error.
4. method according to claim 3, it is characterized in that, this method also comprises: when described load sharing strategy is based on the message routing and can produce the load sharing error or when the load sharing strategy is based on stream routing, search described load sharing link table according to message identification.
5. method according to claim 1 is characterized in that, described obtaining after next jumping and the outgoing interface information, and this method also comprises: described load sharing error count value increases by 1.
6. method according to claim 1 is characterized in that, described obtain the load sharing strategy and generate the load sharing link table be specially:
IP according to the purpose routing device generates route information table, when having load sharing, obtain the load sharing strategy that the user disposes, in described route information table, form load sharing mark and load sharing policy tag automatically, obtain the ratio of sharing of each outgoing interface in the load sharing link table according to the bandwidth of each outgoing interface, according to described load sharing strategy, load sharing mark, load sharing LI(link interface) bandwidth ratio, generate the load sharing link table.
7. a routing device of realizing load sharing is characterized in that, this equipment comprises: load sharing configuration module, generation module, forwarding module; Wherein,
The load sharing configuration module is used for configuration load and shares strategy;
Generation module is used for load sharing strategy and routing iinformation according to described load sharing configuration module configuration, generates the load sharing link table;
Forwarding module, be used for when described load sharing strategy is based on the message routing and can produces the load sharing error, load sharing error count value in the use error counter is searched the load sharing link table that described generation module generates, and E-Packets according to next jumping in the described load sharing link table and outgoing interface information.
8. routing device according to claim 7 is characterized in that this equipment also comprises the route information table generation module, is used for generating route information table according to the IP of purpose routing device.
9. routing device according to claim 8 is characterized in that, the detailed process that described generation module generates the load sharing link table is:
Route information table according to the generation of route information table generation module, when having load sharing, obtain the load sharing strategy that the user disposes, in described route information table, form load sharing mark and load sharing policy tag automatically, obtain the ratio of sharing of each outgoing interface in the load sharing link table according to the bandwidth of each outgoing interface, according to described load sharing strategy, load sharing mark, load sharing LI(link interface) bandwidth ratio, generate the load sharing link table.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010112784.9A CN101789949B (en) | 2010-02-04 | 2010-02-04 | Method and router equipment for realizing load sharing |
| PCT/CN2010/078395 WO2011095017A1 (en) | 2010-02-04 | 2010-11-04 | Method and routing device for implementing load sharing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010112784.9A CN101789949B (en) | 2010-02-04 | 2010-02-04 | Method and router equipment for realizing load sharing |
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| CN101789949A true CN101789949A (en) | 2010-07-28 |
| CN101789949B CN101789949B (en) | 2014-07-02 |
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| CN201010112784.9A Expired - Fee Related CN101789949B (en) | 2010-02-04 | 2010-02-04 | Method and router equipment for realizing load sharing |
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| WO (1) | WO2011095017A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102098224A (en) * | 2011-02-16 | 2011-06-15 | 中兴通讯股份有限公司 | Method and device for sharing data stream loads |
| WO2011095017A1 (en) * | 2010-02-04 | 2011-08-11 | 中兴通讯股份有限公司 | Method and routing device for implementing load sharing |
| CN102437956A (en) * | 2011-12-16 | 2012-05-02 | 福建星网锐捷网络有限公司 | Method, device and equipment for equalizing flow of uplink aggregation port |
| CN102448120A (en) * | 2011-12-23 | 2012-05-09 | 上海顶竹通讯技术有限公司 | Multipath load sharing method and device |
| CN105791116A (en) * | 2016-03-15 | 2016-07-20 | 上海缔安科技股份有限公司 | Data transmission routing method |
| CN105897882A (en) * | 2016-04-06 | 2016-08-24 | 中国人民解放军国防科学技术大学 | Data stream migration method in data center network updating |
| CN106302218A (en) * | 2015-05-29 | 2017-01-04 | 中兴通讯股份有限公司 | The sharing method of network load and device |
| WO2020062268A1 (en) * | 2018-09-30 | 2020-04-02 | 华为技术有限公司 | Method and device for load balancing and message reordering in network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011095017A1 (en) * | 2010-02-04 | 2011-08-11 | 中兴通讯股份有限公司 | Method and routing device for implementing load sharing |
| WO2012109909A1 (en) * | 2011-02-16 | 2012-08-23 | 中兴通讯股份有限公司 | Method and apparatus for sharing data stream load |
| CN102098224B (en) * | 2011-02-16 | 2015-06-03 | 中兴通讯股份有限公司 | Method and device for sharing data stream loads |
| CN102098224A (en) * | 2011-02-16 | 2011-06-15 | 中兴通讯股份有限公司 | Method and device for sharing data stream loads |
| CN102437956A (en) * | 2011-12-16 | 2012-05-02 | 福建星网锐捷网络有限公司 | Method, device and equipment for equalizing flow of uplink aggregation port |
| CN102437956B (en) * | 2011-12-16 | 2014-07-30 | 福建星网锐捷网络有限公司 | Method, device and equipment for equalizing flow of uplink aggregation port |
| CN102448120A (en) * | 2011-12-23 | 2012-05-09 | 上海顶竹通讯技术有限公司 | Multipath load sharing method and device |
| CN102448120B (en) * | 2011-12-23 | 2015-06-24 | 上海顶竹通讯技术有限公司 | Multipath load sharing method and device |
| CN106302218A (en) * | 2015-05-29 | 2017-01-04 | 中兴通讯股份有限公司 | The sharing method of network load and device |
| CN105791116A (en) * | 2016-03-15 | 2016-07-20 | 上海缔安科技股份有限公司 | Data transmission routing method |
| CN105897882A (en) * | 2016-04-06 | 2016-08-24 | 中国人民解放军国防科学技术大学 | Data stream migration method in data center network updating |
| CN105897882B (en) * | 2016-04-06 | 2020-02-18 | 中国人民解放军国防科学技术大学 | Data flow migration method in data center network updating |
| WO2020062268A1 (en) * | 2018-09-30 | 2020-04-02 | 华为技术有限公司 | Method and device for load balancing and message reordering in network |
| CN112753198A (en) * | 2018-09-30 | 2021-05-04 | 华为技术有限公司 | Load balancing and message reordering method and device in network |
| CN112753198B (en) * | 2018-09-30 | 2022-04-05 | 华为技术有限公司 | Load balancing and message reordering method and device in network |
| US11736407B2 (en) | 2018-09-30 | 2023-08-22 | Huawei Technologies Co., Ltd. | Method and apparatus for load balancing and packet re-sequencing on network |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011095017A1 (en) | 2011-08-11 |
| CN101789949B (en) | 2014-07-02 |
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