CN103188165B - A kind of router multipath exports method and the router of intelligent load equilibrium - Google Patents
A kind of router multipath exports method and the router of intelligent load equilibrium Download PDFInfo
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Abstract
The present invention discloses method and the router that a kind of router multipath exports intelligent load equilibrium, by arranging weights respectively for router multilink, it is according to carrying out load balancing taking weights, specify down hop, determine the outlet of flow, and regularly automatically calculate the average residual bandwidth of each circuit, upgrade the weights of each bar circuit, the dynamic busy change adapting to circuit, make the router can according to real-time traffic on each circuit, dynamic conditioning weight, properly distributed different flow is on suitable circuit, overcome in tradition multi-line, no matter circuit busy, flow all walks the drawback of permanent haulage line, improve circuit bandwidth usage rate greatly, and improve online greatly to experience.
Description
Technical field
The present invention relates to communication technique field, particularly relate to method and router that a kind of router multipath exports intelligent load equilibrium.
Background technology
Fig. 1 is a kind of networking structure that can realize load balancing, and this kind of networking model is usually used in the occasions such as Internet bar, hotel, school, community access. Multiple user terminal is by the multilink access web server such as link 1, link 2, and owing to multilink connects identical broadband router, leniently band router arrives the webserver and can generate many links of equal value, the route that namely many costs are identical. In prior art, the data coming from same user terminal flow away same link so that all data stream of each user terminal walk the same interface that identical link arrives the webserver. This kind of implementation is by collocation strategy route on the router of broadband, user terminal outgoing interface is arranged, but this kind of mode policybased routing use complicated and cannot the change of dynamically adapting network structure, change once network structure and just need again to be configured by policybased routing; In addition, easily there is the network access problem that the network availability risk that single line fault is brought and network bandwidth deficiency are brought in this kind of mode, and therefore user often rents many circuits. In the face of the situation of multi-line, user needs the function of reasonable utilization many circuits, the data stream coming from same user terminal is made to carry out load balancing at broadband router, namely flow away link 1, part data of part data flow away link 2, part data can select other links of equal value, neither cause the waste of circuit resource, the lifting of network service quality can be realized again.
Summary of the invention
The technical problem to be solved in the present invention proposes method and the router that a kind of router multipath exports intelligent load equilibrium, to solve network availability risk and the not enough network access problem brought of the network bandwidth that single line fault is brought.
Router multipath exports a method for intelligent load equilibrium, comprises the steps:
Obtain data to be forwarded stream;
If described data stream does not match state table, and when there is the identical route of N bar priority, calculate the current weight of described N bar route, and upgrade the route weights of all correspondences of each interface;
Current weight according to described N bar route, specifies down hop, sets up state table;
From appointment outgoing interface forwarding data;
Wherein, described N be more than or equal to 2 integer, the route that described N bar priority is identical comprise network segment route or acquiescence route.
Further, the method calculates the current weight of described N bar route according to predetermined time interval.
Further, the downlink bandwidth that the initial weight of the N bar route that described priority is identical configures interface to respective links is directly proportional.
Further, the described current weight calculating described N bar route according to predetermined time interval comprises,
S1: the downlink bandwidth configuring the corresponding interface of every bar route;
S2: initial time is set, timing from described initial time, arrives predetermined time interval, triggers timer and interrupts, and calculates the average downlink bandwidth of the corresponding interface of every bar route in described predetermined time interval;
S3: calculate the corresponding current average residual downlink bandwidth of interface of every bar route, described current average residual downlink bandwidth subtracts average downlink bandwidth corresponding in predetermined time interval by the corresponding interface configuration downlink bandwidth of every bar route and obtains;
S4: according to the average residual downlink bandwidth of the corresponding interface of every bar route, obtain the current weight of every bar route according to ratio, upgrade the route weights of all correspondences of each interface, perform step S2.
Further, the route of the described all correspondences of each interface comprises,
It is in all routes that the direct-connected route of the same network segment and down hop and interface are in the same network segment with interface.
Further, the described current weight according to described N bar route, specifies down hop, sets up state table and comprise,
Add up the current weight of described N bar route;
First from described weights, select minimum weights, then select weights to be added successively from residue weights every time, generate a data queue, generate, according to described data queue, the queue that comprises N number of adjacent interval;
Generate a randomized number, search the interval residing for described randomized number, using down hop corresponding to described interval maximum value as the down hop of stream data transmission;
According to designated size in data stream, set up state table, record outgoing interface;
Wherein, described randomized number is the arbitrary value in the data queue generated.
Further, in described data stream, designated size comprises IP pair of source IP and the object IP composition of data packet; Or, the five-tuple information of the agreement type of data packet, object address, object port, source address and source port composition.
Further, if described data stream matches is to state table, according to the down hop forwarding data bag that state table is specified.
Correspondingly, the present invention is open a kind of router also, and described router comprises,
Acquisition module, for obtaining data to be forwarded stream;
Matching module, for mating data to be forwarded stream with state table table item;
First calculating module, for not matching state table when described data stream, and when there is the identical route of N bar priority, calculates the current weight of described N bar route;
More new module, for upgrading the route weights of all correspondences of each interface according to the current weight of described N bar route;
2nd calculating module, for the current weight according to described N bar route, specifies down hop, sets up state table;
Forwarding module, for from appointment outgoing interface forwarding data;
Wherein, described N be more than or equal to 2 integer, described route entry comprise network segment route or acquiescence route.
Further, described more new module is for all route weights under upgrading each interface, and described all route entries comprise the direct-connected route and down hop that are in the same network segment with interface and interface is in all routes of the same network segment.
The technical scheme of the present invention is by arranging weights respectively for the many egress lines of router, take weights as foundation, the outlet of flow is determined by load balancing algorithm, and regularly automatically calculate the residue bandwidth of each circuit, upgrade the weights of each bar circuit, the dynamic busy change adapting to circuit, thus realize the lifting of network service quality.
Accompanying drawing explanation
Fig. 1 is a kind of networking structure schematic diagram realizing load balancing;
The method flow diagram of the router multipath output intelligent load equilibrium that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the method flow diagram of the current weight of the calculating N bar route entry of the embodiment of the present invention;
Fig. 4 is the method flow diagram of the load balancing algorithm of the embodiment of the present invention;
The structure block diagram of the router that Fig. 5 provides for the embodiment of the present invention.
Embodiment
By the technology contents of the present invention being described in detail, is realized object and effect, below in conjunction with enforcement mode and coordinate accompanying drawing to be described in detail.
The method flow diagram of the router multipath output intelligent load equilibrium that Fig. 2 provides for the embodiment of the present invention. As shown in Figure 2, the method comprises the steps:
Step 101: obtain data to be forwarded stream.
Each user terminal to transmit data flows to broadband router, waits that broadband router forwards the data to object address.
Step 102: judge whether described data to be forwarded stream matches state table, if performing step 107; Otherwise, perform step 103.
State table table item comprises the user terminal characteristics information of interrelated preservation and the outgoing interface information of many links of equal value corresponding to broadband router. Described user terminal characteristics information refers to the information that can uniquely identify the terminal user sending data stream, for being different from other-end user. The IP address, source etc. that such as data stream is carried. Outgoing interface is for the outgoing interface for forwarding data stream identifies, or is outgoing interface mark and down hop routing address. For some virtual interface, the physical address of forwarding data stream cannot be determined to want by interface mark, in this case need outgoing interface and the binding of down hop routing address are determined actual physical port.
Step 103: described data to be forwarded stream matches the identical route of N bar priority, the described N identical route of bar priority comprises network segment route or acquiescence route.
The route entry that described priority is identical refers to the route of equal value of two or more than two, namely can arrive object address and the approximately uniform route of cost. If there is no the route that many priority is identical, also just cannot realize load balancing. If just can determine all only to be sent to an object address from all messages of different terminals according to concrete network topology structure, then certainly exist the route that N bar priority is identical, also do not need mating in this kind of situation.
Step 104: the current weight calculating described N bar route, and the route weights of all correspondences under upgrading each interface.
The downlink bandwidth that the initial weight of the N bar route entry that described priority is identical configures interface to corresponding line is directly proportional. It is alternatively that the capacity configuring interface link to corresponding line is directly proportional or is directly proportional to speed.
The current weight calculating described N bar route entry can carry out according to the time that user is arranged. Strict restriction is not had for the timed interval. In order to realize conveniently the present embodiment calculating according to predetermined time interval the current weight of described N bar route entry. Fig. 3 is the method flow diagram of the current weight of the calculating N bar route entry of the embodiment of the present invention, and idiographic flow comprises:
Step 1041: the downlink bandwidth configuring the corresponding interface of every bar route;
The downlink bandwidth of the corresponding interface of every bar route entry can need to arrange according to user, it is also possible to directly distributes according to router initial value. Interface downlink bandwidth is determined, under interface, route weights are just also determined value. After router initialize, every bar route entry weights are proportional with the downlink bandwidth of corresponding interface configuration.
Step 1042: system enables a timer, arranges initial time and timing interval.
Step 1043: timing from described initial time, arrives predetermined time interval, triggers timer and interrupts.
Step 1044: calculate the average downlink bandwidth of interface corresponding to each route within a timer cycle.
Step 1045: calculate the corresponding current average residual downlink bandwidth of interface of every bar route entry.
Described current average residual downlink bandwidth subtracts average downlink bandwidth corresponding in predetermined time interval by the corresponding interface configuration downlink bandwidth of every bar route entry and obtains.
Step 1046: according to the average residual downlink bandwidth of the corresponding interface of every bar route entry, obtain the current weight of every bar route entry according to ratio.
Described current route weights are the ratio of current each interface average residual downlink bandwidth, that is, calculating each interface current average residual downlink bandwidth every time and all to be obtained each route current weight according to average residual downlink bandwidth ratio, the span of described current route weights is 1 to 1000.
Step 1047: the route weights upgrading all correspondences of each interface, performs step 1042.
Step 105: according to described N bar route entry current weight, specifies down hop, sets up state table.
This step utilizes load balancing algorithm to specify down hop, sets up state table. Fig. 4 is the method flow diagram of the load balancing algorithm of the embodiment of the present invention. The method specifically comprises:
Step 1051: the current weight adding up described N bar route entry.
Step 1052: first select minimum weights from described weights, then selects weights to be added successively from residue weights every time, generates a data queue, generate, according to described data queue, the queue that comprises N number of adjacent interval. Such as, the weights of N bar route entry are respectively k1, k2, k3......kn; Select minimum weights k1 X1 to represent, then from remaining weights, select one arbitrarily, be added with described minimum weights X1, obtain X2; Then from remaining weights, one is selected arbitrarily, it is added with X2, obtain X3, analogize with this, obtain the data queue of X1, X2, an X3......Xn, generate, according to described data queue, the interval queue that comprises N number of adjacent interval, namely [0X1], [X1X2], [X2X3] ... [Xn-1Xn].
Described step 1052 is a concrete example just. For the process generating the queue comprising N number of adjacent interval, select first weights can be N bar route entry weights in any one, represent with X1, then from remaining weights, arbitrarily select one, it is added with described minimum weights X1, obtains X2; Then from remaining weights, select one arbitrarily, it be added with X2, obtain X3, analogize with this ..., the value of the adjacent interval formed like this may be different, but only need to change the scope of follow-up generation randomized number, can realize load balancing equally.
Step 1053: generate a randomized number, search the interval residing for described randomized number, using down hop corresponding to described interval maximum value as the down hop of stream data transmission.
The span generating randomized number P, a P is 1 to Xn; Search P to be in which interval, find corresponding interval using down hop corresponding to this interval maximum value as the appointment down hop of stream, set up state table, record outgoing interface. Described randomized number P can adopt generating random number algorithm to obtain.
Here it is noted that namely down hop corresponding to interval maximum value residing for P obtain route weights corresponding to this maximum value, selects this route as down hop.
Step 1054: according to designated size in data stream, set up state table, record outgoing interface.
In described data stream, designated size comprises IP pair of source IP and the object IP composition of data packet; Or, the five-tuple information of the agreement type of data packet, object address, object port, source address and source port composition. Described state table table item records interrelated preservation user terminal data bag source IP and IP pair of object IP composition with the outgoing interface information of router many link of equal value; Or record the agreement type of the user terminal data bag of interrelated preservation, object address, object port, source address and the five-tuple information of source port composition and the outgoing interface information of router many link of equal value.
Step 106: from appointment outgoing interface forwarding data.
Find corresponding outgoing interface according to designated size in data stream, send data.
Step 107: the down hop forwarding data bag specified according to state table.
Specifically, it is assumed that in the networking structure shown in Fig. 1, configuration of routers 3 interfaces in broadband, to the webserver, form the route entry that 3 priority is identical, represent with link 1, link 2 and link 3 respectively. The downlink bandwidth of pre-configured 3 interfaces is respectively 10M, 20M and 30M, and when 3 route entries all come into force, the weights of 3 route entries represent with 1,2 and 3 respectively. If broadband router gets 6 data stream, if data stream matches is to state table, the routing link forwarding data that the outgoing interface can specified according to state table is corresponding; If data stream does not match state table, it is necessary to distribute described data according to the weights of 3 route entries and flow to certain link transmits. After router initialize, the bandwidth of 3 route entries is identical with pre-configured corresponding interface bandwidth. In default situations, 6 data fail to be convened for lack of a quorum and distribute according to the weights of 3 route entries, namely weights be 3 routing link distribute 3 data stream, weights be 2 routing link distribute 2 data stream, weights be 1 routing link distribute 1 data stream.
Broadband router once receive data and start to transmit data, flow under each interface can change in the moment, transfer carries out in the moment, when broadband router constantly receives data stream, when the weighted value of 3 route entries is, it is engraved in change, in certain moment, some links may be in idle state, some links may be in busy state, ideally, is be fitted on idle link to transmit data to be forwarded flow point. Consequently, it is desirable to the weights of current route entry are recalculated. The present embodiment adopts according to predetermined time interval, calculate 3 route entry current weight, and the route weights of all correspondences under upgrading each interface, current weight according to 3 route entries, according to load balancing algorithm, specifies down hop, set up state table, record outgoing interface; From appointment outgoing interface forwarding data.
With specific examples, load balancing algorithm is described below:
Article 3, the initial weight of route entry is respectively 1,2,3; Select minimum weights 1 to represent with X1, then from remaining weights, select any one, as selected 3, be added with described minimum weights X1, obtain X2, namely 4; Then from remaining weights, select remaining one, it is added with X2, obtains X3, namely 6, like this, obtain the data queue of X1, X2, an X3, namely 1,4,6. Generate, according to described data queue, the interval queue that comprises 3 adjacent intervals, namely [01], [14], [46]. Then a randomized number between 1 to 6 is generated, if randomized number is 5, search the interval that randomized number 5 is in [46], the maximum value 6 corresponding according to this interval, the down hop that can obtain described maximum value 6 correspondence is Article 2 routing link, record this routing interface, set up state table. According to designated size in data stream, for described Article 2 routing link forwarding data. After reaching predetermined time interval, it is necessary to recalculate the average residual bandwidth of the corresponding interface of current route entry, according to each bar route weights of described average residual bandwidth calculation, according to load balancing algorithm, data stream is distributed.
The structure block diagram of the router that Fig. 5 provides for the embodiment of the present invention. As shown in Figure 5, described router comprises,
Acquisition module 501, for obtaining data to be forwarded stream. Each user terminal to transmit data flows to broadband router, waits that broadband router forwards the data to object address.
Matching module 502, for mating described band forwarding data stream with state table table item.
First calculating module 503, for not matching state table when described data stream, and when there is the identical route entry of N bar priority, calculates the current weight of described N bar route entry. Described router calculates the current weight of N bar route entry according to predetermined time interval, and calculation procedure can with reference to the detailed description of figure 3.
More new module 504, for upgrading the route weights of all correspondences of each interface according to the current weight of described N bar route entry. Under described each interface, all routes comprise the direct-connected route and down hop that are in the same network segment with interface and interface is in all routes of the same network segment.
2nd calculating module 505, for the current weight according to described N bar route entry, specifies down hop, sets up state table. The described current weight according to described N bar route entry, specifies down hop to realize according to load balancing algorithm, and concrete steps can with reference to the detailed description of figure 4 part.
Forwarding module 506, for from appointment outgoing interface forwarding data;
Wherein, described N be more than or equal to 2 integer, described route entry comprise network segment route or acquiescence route.
The technical scheme of the present invention, by arranging weights respectively for the many egress lines of router, take weights as foundation, the outlet of flow is determined by load balancing algorithm, and regularly automatically calculate the residue bandwidth of each circuit, upgrade the weights of each bar circuit, the dynamic busy change adapting to circuit, make the router can according to real-time traffic on each circuit, dynamic conditioning weight, properly distributed different flow is on suitable circuit, overcome in tradition multi-line, no matter circuit busy, flow all walks the drawback of permanent haulage line, improve circuit bandwidth usage rate greatly, and improve online greatly to experience.
Above are only the better embodiment of the present invention and institute's application technology principle, any it is familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily or replacement, all should be encompassed in protection scope of the present invention.
Claims (9)
1. the method for a router multipath output intelligent load equilibrium, it is characterised in that, comprise the steps:
Obtain data to be forwarded stream;
If described data stream does not match state table, and when there is the identical route of N bar priority, calculate the current weight of described N bar route, and upgrade the route weights of all correspondences of each interface;
Current weight according to described N bar route, specifies down hop, sets up state table;
From appointment outgoing interface forwarding data;
Wherein, described N be more than or equal to 2 integer, the route that described N bar priority is identical comprise network segment route or acquiescence route;
Wherein, the described current weight according to described N bar route, specifies down hop, sets up state table and comprise,
Add up the current weight of described N bar route;
First from described weights, select minimum weights, then select weights to be added successively from residue weights every time, generate a data queue, generate, according to described data queue, the queue that comprises N number of adjacent interval;
Generate a randomized number, search the interval residing for described randomized number, using down hop corresponding to described interval maximum value as the down hop of stream data transmission;
According to designated size in data stream, set up state table, record outgoing interface;
Wherein, described randomized number is the arbitrary value in the data queue generated.
2. router multipath according to claim 1 exports the method for intelligent load equilibrium, it is characterised in that, the method calculates the current weight of described N bar route according to predetermined time interval.
3. router multipath according to claim 1 exports the method for intelligent load equilibrium, it is characterised in that, the downlink bandwidth that the initial weight of the N bar route that described priority is identical configures interface to respective links is directly proportional.
4. router multipath according to claim 2 exports the method for intelligent load equilibrium, it is characterised in that, the described current weight calculating described N bar route according to predetermined time interval comprises,
S1: the downlink bandwidth configuring the corresponding interface of every bar route;
S2: initial time is set, timing from described initial time, arrives predetermined time interval, triggers timer and interrupts, and calculates the average downlink bandwidth of the corresponding interface of every bar route in described predetermined time interval;
S3: calculate the corresponding current average residual downlink bandwidth of interface of every bar route, described current average residual downlink bandwidth subtracts average downlink bandwidth corresponding in predetermined time interval by the corresponding interface configuration downlink bandwidth of every bar route and obtains;
S4: according to the average residual downlink bandwidth of the corresponding interface of every bar route, obtain the current weight of every bar route according to ratio, upgrade the route weights of all correspondences of each interface, perform step S2.
5. router multipath according to claim 1 exports the method for intelligent load equilibrium, it is characterized in that, the route of the described all correspondences of each interface comprises, and is in, with interface, all routes that the direct-connected route of the same network segment and down hop and interface are in the same network segment.
6. router multipath according to claim 5 exports the method for intelligent load equilibrium, it is characterised in that, in described data stream, designated size comprises IP pair of source IP and the object IP composition of data packet; Or, the five-tuple information of the agreement type of data packet, object address, object port, source address and source port composition.
7. router multipath according to claim 1 and 2 exports the method for intelligent load equilibrium, it is characterised in that, if described data stream matches is to state table, according to the down hop forwarding data bag that state table is specified.
8. a router, it is characterised in that, described router comprises,
Acquisition module, for obtaining data to be forwarded stream;
Matching module, for mating data to be forwarded stream with state table table item;
First calculating module, for not matching state table when described data stream, and when there is the identical route of N bar priority, calculates the current weight of described N bar route;
More new module, for upgrading the route weights of all correspondences of each interface according to the current weight of described N bar route;
2nd calculating module, for adding up the current weight of described N bar route; First from described weights, select minimum weights, then select weights to be added successively from residue weights every time, generate a data queue, generate, according to described data queue, the queue that comprises N number of adjacent interval; Generate a randomized number, search the interval residing for described randomized number, using down hop corresponding to described interval maximum value as the down hop of stream data transmission; According to designated size in data stream, set up state table, record outgoing interface; Wherein, described randomized number is the arbitrary value in the data queue generated;
Forwarding module, for from appointment outgoing interface forwarding data;
Wherein, described N be more than or equal to 2 integer, the route that described N bar priority is identical comprise network segment route or acquiescence route.
9. router according to claim 8, it is characterised in that, the route of the described all correspondences of each interface comprises the direct-connected route and down hop that are in the same network segment with interface and interface is in all routes of the same network segment.
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| CN104869076A (en) * | 2014-02-24 | 2015-08-26 | 中兴通讯股份有限公司 | Load balance adjusting method and device |
| CN104506359B (en) * | 2014-12-25 | 2018-01-30 | 迈普通信技术股份有限公司 | A kind of route pattern knows method for distinguishing and router |
| CN106412628B (en) | 2015-07-30 | 2020-07-24 | 华为技术有限公司 | Bandwidth adjusting method and related equipment |
| CN106302168B (en) * | 2016-09-18 | 2019-09-24 | 东软集团股份有限公司 | A kind of ISP route selecting method, device and gateway |
| CN107317766B (en) * | 2017-03-17 | 2020-07-28 | 深圳市网是科技有限公司 | Intelligent load method of multi-WAN-port network equipment |
| CN107241270A (en) * | 2017-04-20 | 2017-10-10 | 北京安博通科技股份有限公司 | Message processing method and device |
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| CN107896190A (en) * | 2017-12-26 | 2018-04-10 | 新华三技术有限公司 | It route system of selection, device and the routing device of outgoing interface |
| CN108337184A (en) * | 2018-01-11 | 2018-07-27 | 山石网科通信技术有限公司 | Flow equalization dispatching method and device |
| CN108322388B (en) * | 2018-01-31 | 2022-03-01 | 新华三技术有限公司 | Message forwarding method and device |
| CN111800827B (en) * | 2020-06-15 | 2023-07-14 | 深圳市信锐网科技术有限公司 | Data transmission method, device and storage medium |
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