CN104486254A - SDN network bandwidth control method and SDN network bandwidth control system - Google Patents
SDN network bandwidth control method and SDN network bandwidth control system Download PDFInfo
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Abstract
The invention provides an SDN network bandwidth control method and an SDN network bandwidth control system. The SDN network bandwidth control method comprises the following steps: setting one or more time slots, wherein each time slot is formed from beginning time to ending time; setting one or more node ranges, wherein each node range is formed from one beginning network node address to one ending node network address; setting a restricted bandwidth value corresponding to each of the time slots and/or the node ranges; obtaining current time, and determining whether the current time is located in the set time slots; obtaining current node, and determining whether the current node is located in the set node ranges; distributing bandwidth according to the restricted bandwidth value distributed in the current time where the time slot is located and the current node where the node range is located. Through software implementation and low cost, time-division and node-division bandwidth distribution is carried out according to the difference of different applications in corresponding positions of preset time slots and node ranges, so that the resources are flexibly distributed, network congestion and network redundancy are prevented, and the bandwidth availability ratio is effectively improved.
Description
Technical field
The present invention relates to networking technology area, particularly relate to a kind of SDN band width control method and system.
Background technology
Existing Bandwidth Control, is normally controlled bandwidth by network layer or application layer; But, at present in the Bandwidth Control of network layer, limiting network speed mainly through different agreement, detailed control cannot be carried out to the available bandwidth of embody rule, may impact using other high-priority applications of same protocol when applying and sending fairly large data; More complicated by the configuration of hardware net layer, need to be configured the bandwidth that could realize complete trails at multiple network node and control, and be difficult to time segment and control, underaction; Application layer network speed limit only provides single speed limit, can not use different speed limits according to concrete service conditions Different periods.All above, bandwidth can be caused to fix or the network bandwidth too remains, thus cause the problems such as waste or network bandwidth wretched insufficiency.
Summary of the invention
The shortcoming of prior art in view of the above, end of the present invention is to provide a kind of SDN band width control method and system, solves the inflexible problem of SDN allocated bandwidth in above-mentioned prior art.
For realizing above-mentioned target and other related objectives, the invention provides a kind of SDN band width control method, comprising: steps A: arranging one or more time period, each time period formed from initial time to end time; Step B: one or more range of nodes is set, each range of nodes formed from an initial network node address to end node network address; Step C: the check strap width values corresponding with each described time period and/or range of nodes is set; Step D: obtain current time, and determine whether current time is positioned at the set time period; If so, then next step is continued; If not, then step D is repeated; Step e: obtain present node, and determine whether present node is positioned at set range of nodes; If so, then next step is continued; If not, then step e is repeated; Step F: distribute bandwidth according to the check strap width values that current time place time period and present node place range of nodes are assigned with.
Optionally, described SDN band width control method, also comprises step G: return described step D.
Optionally, described step D comprises: step D1: judge whether current time is greater than the initial time of the time period of setting; If so, next step is performed, otherwise, repeat this; Step D2: judge whether current time is less than the end time of described time period, if so, performs next step; Otherwise, repeat this.
Optionally, described step e comprises: step e 1: judge whether current network node address is greater than the start node network address of the network node scope of setting; If so, next step is performed; Otherwise, repeat this; Step e 2: judge whether current network node address is less than the end node network address of the network node scope of setting; If so, next step is performed; Otherwise, repeat this.
Optionally, described step D comprises: travel through the time period of all settings for judging whether described current point in time is positioned at the time period wherein; Described step e comprises: travel through the range of nodes of all settings for judging whether described present node is positioned at range of nodes wherein.
For realizing above-mentioned target and other related objectives, the invention provides a kind of SDN bandwidth control system, comprising: the time period arranges module, for arranging one or more time period, each time period formed from initial time to end time; Range of nodes arranges module, and for arranging one or more range of nodes, each range of nodes formed from an initial network node address to end node network address; Limiting bandwidth arranges module, for arranging the check strap width values corresponding with each described time period and/or range of nodes; Time period judge module, for obtaining current time, and determines whether current time is positioned at the set time period; If so, then range of nodes decision instruction is generated; If not, then repeat to judge; Range of nodes judge module, for when receiving described range of nodes decision instruction, obtains present node, and determines whether present node is positioned at set range of nodes; If so, then allocated bandwidth instruction is generated; If not, then repeat to judge; Bandwidth allocation module, for when receiving described allocated bandwidth instruction, distributes bandwidth according to the check strap width values that current time place time period and present node place range of nodes are assigned with.
Optionally, described bandwidth allocation module generates notification instruction to described time period judge module and makes it perform after distribution bandwidth.
Optionally, described time period judge module comprises: initial time judge module, for judging whether current time is greater than the initial time of the time period of setting; If so, then end time decision instruction is generated; Otherwise, repeat to judge; End time judge module: for when receiving described end time decision instruction, judges whether current time is less than the end time of described time period; If so, described range of nodes decision instruction is then generated; Otherwise, repeat to judge.
Optionally, described range of nodes judge module comprises: start node network address judge module, for judging whether current network node address is greater than the start node network address of the network node scope of setting; If so, the decision instruction of the end node network address is generated; Otherwise, repeat to judge; End node network address judge module, for when receiving described end node network address decision instruction, judges whether current network node address is less than the end node network address of the network node scope of setting; If so, described allocated bandwidth instruction is then generated; Otherwise, repeat to judge.
Optionally, described SDN bandwidth control system, comprising: described time period judge module comprises: time period spider module, for traveling through the time period of all settings for judging whether described current point in time is positioned at the time period wherein; Described range of nodes judge module comprises: range of nodes spider module, for traveling through the range of nodes of all settings for judging whether described present node is positioned at range of nodes wherein.
As mentioned above, the invention provides a kind of SDN band width control method and system, arrange one or more time period, each time period formed from initial time to end time; Arrange one or more range of nodes, each range of nodes formed from an initial network node address to end node network address; The check strap width values corresponding with each described time period and/or range of nodes is set; Obtain current time, and determine whether current time is positioned at the set time period; If so, then next step is continued; If not, then repeat; Obtain present node, and determine whether present node is positioned at set range of nodes; If so, then next step is continued; If not, then repeat; Bandwidth is distributed according to the check strap width values that current time place time period and present node place range of nodes are assigned with; The present invention can software simulating, and cost is low, and make the allocated bandwidth of timesharing partial node in preset time period and range of nodes correspondence position difference for different application, flexible allocate resource, prevents network congestion and network redundancy, effectively improve bandwidth availability ratio.
Accompanying drawing explanation
Fig. 1 is shown as the schematic flow sheet of the SDN band width control method in one embodiment of the invention.
Fig. 2 is shown as the schematic flow sheet of step S4 in the SDN band width control method in one embodiment of the invention.
Fig. 3 is shown as the schematic flow sheet of step S5 in the SDN band width control method in one embodiment of the invention.
Fig. 4 is shown as the structural representation of the SDN bandwidth control system in one embodiment of the invention.
Fig. 5 is shown as the structural representation of time period judge module in the SDN bandwidth control system in one embodiment of the invention.
Fig. 6 is shown as the structural representation of the SDN bandwidth control system interior joint scope judge module in one embodiment of the invention.
Element numbers explanation
1 SDN bandwidth control system
11 time periods arranged module
12 range of nodes arrange module
13 limiting bandwidths arrange module
14 time period judge modules
141 initial time judge modules
142 end time judge modules
15 range of nodes judge modules
151 start node network address judge modules
152 end node network address judge modules
16 bandwidth allocation module
S1 ~ S5 method step
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figure 1, the invention provides a kind of SDN band width control method, comprising:
Step S1: one or more time period is set, each time period formed from initial time to end time;
Step S2: one or more range of nodes is set, each range of nodes formed from an initial network node address to end node network address; In one embodiment, may be had one or more in described range of nodes from described initial network node to the path of described end network node.
Step S3: the check strap width values corresponding with each described time period and/or range of nodes is set; In one embodiment, described check strap width values can set by user's actual need, and described check strap width values can be only corresponding with each time period, such as 12:00 ~ 13:00, restriction below 5Mbps bandwidth, or 18:00 ~ 19:00, restriction below 10Mbps bandwidth; Also can be only corresponding with each range of nodes, such as IP address 192.168.1.2 ~ 192.168.1.10, restriction below 10Mbps bandwidth, or 192.168.1.20 ~ 192.168.1.30, restriction below 20Mbps bandwidth can certainly be MAC Address.
Certainly preferred, be associate with time period and range of nodes, time period field or range of nodes field can repeat, and whole entry does not repeat, such as, shown in following table simultaneously:
| Time period | Range of nodes | Check strap width values |
| 18:00～19:00 | 192.168.1.2～192.168.1.10 | 10Mbps |
| 9:00～10:00 | 192.168.1.20～192.168.1.30 | 20Mbps |
| 9:00～10:00 | 192.168.1.2～192.168.1.10 | 30Mbps |
| …… | …… | …… |
If associate with time period and range of nodes simultaneously, then can detect time period and range of nodes that certain network inner electronic equipment falls into corresponding to current time and place current node address successively, thus judge its check strap width values of distributing.
Concrete, follow-up can judging whether matches entry thus carries out corresponding limiting bandwidth in such as above-mentioned table, this can realize in conjunction with the feature of SDN, one of the most noticeable feature of core technology OpenFlow of SDN is, it is intended to can the general-purpose platform of developing application and service by setting up one, solves the current and following problem.Some current application programs can be developed on OpenFlow, comprise and allow to arrange bandwidth for network activity that is special, short-term, then automatically redistribute.In the present invention, according to the setting that user needs, the SDN switch that is connected is asked by the Packet Generation of user to SDN controller with user, SDN controller is analyzed packet, and formulate Bandwidth Dynamic control strategy (being namely such as similar to the principle of upper table) according to arranging of user's needs, then band-width tactics is configured to relevant SDN switch; The band-width tactics that SDN switch provides according to SDN controller carries out distribution bandwidth, then carries out data retransmission.
Step S4: obtain current time, and determine whether current time is positioned at the set time period; If so, then next step is continued; If not, then step S4 is repeated; In one embodiment, current time can be the system time of SDN.
Step S5: obtain present node, and determine whether present node is positioned at set range of nodes; If so, then next step is continued; If not, then step S5 is repeated;
Step S6: distribute bandwidth according to the check strap width values that current time place time period and present node place range of nodes are assigned with.
In one embodiment, preferred but nonessential, described SDN band width control method, returns described step S4 after step S6.
As shown in Figure 2, in one embodiment, preferably, in order to judge whether current time falls in the set time period;
Described step S4 comprises:
Step S41: judge whether current time is greater than the initial time of the time period of setting; If so, next step is performed, otherwise, repeat this;
Step S42: judge whether current time is less than the end time of described time period, if so, performs next step; Otherwise, repeat this.
As shown in Figure 3, in one embodiment, preferably, described step S5 comprises:
Step S51: judge whether current network node address is greater than the start node network address of the network node scope of setting; If so, next step is performed; Otherwise, repeat this;
Step S52: judge whether current network node address is less than the end node network address of the network node scope of setting; If so, next step is performed; Otherwise, repeat this.
In one embodiment, preferably, if set time period and range of nodes have multiple, then described step S4 can comprise before step S41:
Step S40: for follow-up, the time period traveling through all settings judges whether described current point in time is positioned at the time period wherein;
And described step S5 can comprise before step S51:
For follow-up, the range of nodes that step S50 travels through all settings judges whether described present node is positioned at range of nodes wherein.
Certainly, if do not fall into any entry (time period and range of nodes), then bandwidth such as can not established to limit or newly-increased limiting bandwidth value etc. is set, in above-mentioned table, forming entry.
As shown in Figure 4, the invention provides a kind of SDN bandwidth control system 1, its know-why is roughly the same with above-described embodiment, and the technical characteristic therefore when not conflicting in above-described embodiment can be applicable to the present embodiment, therefore repeats no more the technical characteristic repeated.
Described system 1 comprises: the time period arranges module 11, and for arranging one or more time period, each time period formed from initial time to end time; Range of nodes arranges module 12, and for arranging one or more range of nodes, each range of nodes formed from an initial network node address to end node network address; Limiting bandwidth arranges module 13, for arranging the check strap width values corresponding with each described time period and/or range of nodes; Time period judge module 14, for obtaining current time, and determines whether current time is positioned at the set time period; If so, then range of nodes decision instruction is generated; If not, then repeat to judge; Range of nodes judge module 15, for when receiving described range of nodes decision instruction, obtains present node, and determines whether present node is positioned at set range of nodes; If so, then allocated bandwidth instruction is generated; If not, then repeat to judge; Bandwidth allocation module 16, for when receiving described allocated bandwidth instruction, distributes bandwidth according to the check strap width values that current time place time period and present node place range of nodes are assigned with.
In one embodiment, preferred but nonessential, described bandwidth allocation module 16 generates notification instruction to described time period judge module 14 after distribution bandwidth makes it perform.
As shown in Figure 5, in one embodiment, described time period judge module 14 comprises: initial time judge module 141, for judging whether current time is greater than the initial time of the time period of setting; If so, then end time decision instruction is generated; Otherwise, repeat to judge; End time judge module 142: for when receiving described end time decision instruction, judges whether current time is less than the end time of described time period; If so, described range of nodes decision instruction is then generated; Otherwise, repeat to judge.
As shown in Figure 6, in one embodiment, described range of nodes judge module 15 comprises: start node network address judge module 151, for judging whether current network node address is greater than the start node network address of the network node scope of setting; If so, the decision instruction of the end node network address is generated; Otherwise, repeat to judge; End node network address judge module 152, for when receiving described end node network address decision instruction, judges whether current network node address is less than the end node network address of the network node scope of setting; If so, described allocated bandwidth instruction is then generated; Otherwise, repeat to judge.
In one embodiment, preferably, described SDN bandwidth control system 1, comprising: described time period judge module 14 comprises: time period spider module, for traveling through the time period of all settings for judging whether described current point in time is positioned at the time period wherein; Described range of nodes judge module 15 comprises: range of nodes spider module, for traveling through the range of nodes of all settings for judging whether described present node is positioned at range of nodes wherein.
In one embodiment, described system 1 also can comprise three databases such as time period data memory module, network node range data memory module and band data memory module store respectively or a database to store above-mentioned three kinds of data, such as with aforementioned sheet form storage etc. all can, all can set as required.
In sum, the invention provides a kind of SDN band width control method and system, arrange one or more time period, each time period formed from initial time to end time; Arrange one or more range of nodes, each range of nodes formed from an initial network node address to end node network address; The check strap width values corresponding with each described time period and/or range of nodes is set; Obtain current time, and determine whether current time is positioned at the set time period; If so, then next step is continued; If not, then repeat; Obtain present node, and determine whether present node is positioned at set range of nodes; If so, then next step is continued; If not, then repeat; Bandwidth is distributed according to the check strap width values that current time place time period and present node place range of nodes are assigned with; The present invention can software simulating, and cost is low, and make the allocated bandwidth of timesharing partial node in preset time period and range of nodes correspondence position difference for different application, flexible allocate resource, prevents network congestion and network redundancy, effectively improve bandwidth availability ratio.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. a SDN band width control method, is characterized in that, comprising:
Steps A: one or more time period is set, each time period formed from initial time to end time;
Step B: one or more range of nodes is set, each range of nodes formed from an initial network node address to end node network address;
Step C: the check strap width values corresponding with each described time period and/or range of nodes is set;
Step D: obtain current time, and determine whether current time is positioned at the set time period; If so, then next step is continued; If not, then step D is repeated;
Step e: obtain present node, and determine whether present node is positioned at set range of nodes; If so, then next step is continued; If not, then step e is repeated;
Step F: distribute bandwidth according to the check strap width values that current time place time period and present node place range of nodes are assigned with.
2. SDN band width control method according to claim 1, is characterized in that, also comprise step G: return described step D.
3. SDN band width control method according to claim 1, is characterized in that, described step D comprises:
Step D1: judge whether current time is greater than the initial time of the time period of setting; If so, next step is performed, otherwise, repeat this;
Step D2: judge whether current time is less than the end time of described time period, if so, performs next step; Otherwise, repeat this.
4. SDN band width control method according to claim 1, is characterized in that, described step e comprises:
Step e 1: judge whether current network node address is greater than the start node network address of the network node scope of setting; If so, next step is performed; Otherwise, repeat this;
Step e 2: judge whether current network node address is less than the end node network address of the network node scope of setting; If so, next step is performed; Otherwise, repeat this.
5. SDN band width control method according to claim 1, is characterized in that, described step D comprises: travel through the time period of all settings for judging whether described current point in time is positioned at the time period wherein; Described step e comprises: travel through the range of nodes of all settings for judging whether described present node is positioned at range of nodes wherein.
6. a SDN bandwidth control system, is characterized in that, comprising:
Time period arranges module, and for arranging one or more time period, each time period formed from initial time to end time;
Range of nodes arranges module, and for arranging one or more range of nodes, each range of nodes formed from an initial network node address to end node network address;
Limiting bandwidth arranges module, for arranging the check strap width values corresponding with each described time period and/or range of nodes;
Time period judge module, for obtaining current time, and determines whether current time is positioned at the set time period; If so, then range of nodes decision instruction is generated; If not, then repeat to judge;
Range of nodes judge module, for when receiving described range of nodes decision instruction, obtains present node, and determines whether present node is positioned at set range of nodes; If so, then allocated bandwidth instruction is generated; If not, then repeat to judge;
Bandwidth allocation module, for when receiving described allocated bandwidth instruction, distributes bandwidth according to the check strap width values that current time place time period and present node place range of nodes are assigned with.
7. SDN bandwidth control system according to claim 6, is characterized in that, described bandwidth allocation module generates notification instruction to described time period judge module after distribution bandwidth makes it perform.
8. SDN bandwidth control system according to claim 6, is characterized in that, described time period judge module comprises:
Initial time judge module, for judging whether current time is greater than the initial time of the time period of setting; If so, then end time decision instruction is generated; Otherwise, repeat to judge;
End time judge module: for when receiving described end time decision instruction, judges whether current time is less than the end time of described time period; If so, described range of nodes decision instruction is then generated; Otherwise, repeat to judge.
9. SDN bandwidth control system according to claim 6, is characterized in that, described range of nodes judge module comprises:
Start node network address judge module, for judging whether current network node address is greater than the start node network address of the network node scope of setting; If so, the decision instruction of the end node network address is generated; Otherwise, repeat to judge;
End node network address judge module, for when receiving described end node network address decision instruction, judges whether current network node address is less than the end node network address of the network node scope of setting; If so, described allocated bandwidth instruction is then generated; Otherwise, repeat to judge.
10. SDN bandwidth control system according to claim 6, it is characterized in that, comprise: described time period judge module comprises: time period spider module, for traveling through the time period of all settings for judging whether described current point in time is positioned at the time period wherein; Described range of nodes judge module comprises: range of nodes spider module, for traveling through the range of nodes of all settings for judging whether described present node is positioned at range of nodes wherein.
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