CN102594662A - Realization method and device of quality of service - Google Patents
Realization method and device of quality of service Download PDFInfo
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- CN102594662A CN102594662A CN2012100191601A CN201210019160A CN102594662A CN 102594662 A CN102594662 A CN 102594662A CN 2012100191601 A CN2012100191601 A CN 2012100191601A CN 201210019160 A CN201210019160 A CN 201210019160A CN 102594662 A CN102594662 A CN 102594662A
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Abstract
The invention discloses a realization method and a device of quality of service. The method comprises the following steps: redirecting a message at an N-level scheduling first port to one queue in an N plus 1-level scheduling second port, wherein N is a positive integer; and using the message and implementing N plus 1 level scheduling. With the adoption of the realization method and the device, the demands of large-scale users can be satisfied.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of implementation method and device of service quality.
Background technology
In computer network, in order different support and assurances to be provided to data transmission performance, operator's service quality (Quality of Service abbreviates QoS as) technology that has been widely used guarantees the Network Transmission quality.
At present, along with the expansion of userbase, increasing of class of business requires further refinement discriminating service flow of switching equipment.But,, be difficult to satisfy the requirement of this large-scale consumer, multi-service kind because the scheduler of QoS mechanism only has schedule level one equipment.
Summary of the invention
The invention provides a kind of implementation method and device of service quality, to solve the problem that QoS technology in the correlation technique is difficult to satisfy the requirement of this large-scale consumer, multi-service kind at least.
According to an aspect of the present invention, a kind of implementation method of service quality is provided, has comprised: in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling, wherein N is a positive integer; Use message, carry out the scheduling of N+1 level.
Preferably; Before in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling, also comprise: dispose the buffer memory of the buffer memory sum of all formations in first port of N level scheduling greater than this formation in second port of N+1 level scheduling.
Preferably; Under the situation that the buffer memory of this formation in second port of N+1 level scheduling does not take, with comprising in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling: the bandwidth of confirming all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; The bandwidth that abandons all formations in first port of N level scheduling surpasses the part of giving the bandwidth of first port assignment in advance.
Preferably; Under the situation that the buffer memory of this formation in second port of N+1 level scheduling has taken, with comprising in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling: the bandwidth of confirming all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; After first port of N level scheduling suspended pre-set time interval, continue to carry out with the operation in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling.
Preferably, first port time-out pre-set time interval with the scheduling of N level comprises: use the Flow Control frame, wherein the Flow Control frame is used to indicate first port with the scheduling of N level to suspend pre-set time interval.
According to another aspect of the present invention, a kind of implement device of service quality is provided, has comprised: redirection module, be used for message redirecting with first port of N level scheduling in a formation of second port of N+1 level scheduling, wherein N is a positive integer; First Executive Module is used to use message, carries out the scheduling of N+1 level.
Preferably, also comprise: configuration module, the buffer memory sum of all formations of first port that is used for disposing the scheduling of N level is greater than the buffer memory of this formation in second port of N+1 level scheduling.
Preferably; Be redirected and comprise: first determination module; Be used under the situation that the buffer memory in this formation of second port of N+1 level scheduling do not take, confirm that the bandwidth of all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; Discard module, the bandwidth of all formations that is used for abandoning first port of N level scheduling surpasses the part of giving the bandwidth of first port assignment in advance.
Preferably; Redirection module also comprises: second determination module; Be used under the situation that the buffer memory in this formation of second port of N+1 level scheduling taken, confirm that the bandwidth of all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; Second Executive Module after being used for first port with N level scheduling and suspending pre-set time interval, continues to carry out with the operation in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling.
Preferably, second Executive Module comprises: use the Flow Control frame, wherein the Flow Control frame is used for indication time-out pre-set time interval.
Through the present invention, with the port of the message redirecting of dispatching out switching equipment, solved the problem of the requirement that is difficult to satisfy this large-scale consumer, multi-service kind in the correlation technique, and then satisfied the demand of large-scale consumer to switching equipment.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the implementation method of the service quality of the embodiment of the invention;
Fig. 2 be according to the embodiment of the invention based on the implementation method of the hierarchical service quality of Flow Control and the logic diagram of system;
Fig. 3 be according to the embodiment of the invention based on the implementation method of the hierarchical service quality of Flow Control and the schematic diagram of system;
Fig. 4 is the structured flowchart according to the implement device of the service quality of the embodiment of the invention;
Fig. 5 is the structured flowchart one of the implement device of service quality according to the preferred embodiment of the invention;
Fig. 6 is the structured flowchart two of the implement device of service quality according to the preferred embodiment of the invention;
Fig. 7 is the structured flowchart three of the implement device of service quality according to the preferred embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
The switching equipment that the embodiment of the invention adopts is supported common Q oS mechanism, comprises Flow Control, and traffic classification is redirected port shaping, formation shaping and queue scheduling etc.
In order to set up multi-stage scheduling device model; The port that can earlier the first order be dispatched is provided with in the port and encircles; Dispatch out the first order message of switching equipment and send switching equipment again back to; Deliver to through the message that is redirected certain port to participate in first order scheduling in certain formation of port of second level scheduling, Flow Control is set, the corresponding port of the pairing formation back-pressure of the port first order scheduling through second level scheduling at the port of first order scheduling; The port of second level scheduling is provided with in the port encircles; Dispatch out the second level message of switching equipment and send switching equipment again back to; Deliver to through the message that is redirected certain port will participate in second level scheduling in certain formation of port of third level scheduling, the port of scheduling is provided with Flow Control in the second level, the corresponding port of the corresponding formation back-pressure first order scheduling of the port through third level scheduling; The rest may be inferred, sets up multi-stage scheduling device model.
Based on above-mentioned multi-stage scheduling device model, the embodiment of the invention provides a kind of implementation method of service quality, and Fig. 1 is the flow chart according to the implementation method of the service quality of the embodiment of the invention, comprises that following step S102 is to step S104.
Step S102, in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling, wherein N is a positive integer.
Step S104 uses message, carries out the scheduling of N+1 level.
In the correlation technique, the scheduler of QoS mechanism only has schedule level one equipment, is difficult to satisfy the demand of large-scale consumer.Through the present invention, with the port of the message redirecting of dispatching out switching equipment, realized multi-stage scheduling, thereby can satisfy the demand of large-scale consumer to switching equipment.
Describe how to realize the hierarchical service quality technology below in conjunction with steps A in detail to step D.
Steps A, each port support outlet formation number of switching equipment is x, and the outlet formation buffer memory of the port of each grade scheduling is set, each outlet formation buffer memory of N level scheduling is Q
N, each outlet formation buffer memory of N+1 level scheduling is Q
N+1, guarantee outlet formation buffer memory, the i.e. x*Q of the outlet formation buffer memory sum of N level scheduling greater than the outbound port of N+1 level scheduling
N＞Q
N+1, Flow Control frame suspension time T P is set.
Step B is provided with the port outlet shaping of first order scheduling respectively, the formation shaping; Queue scheduling, when certain formation bandwidth of first order scheduling was scheduling to the bandwidth of its distribution above the first order, queue depth was above being the buffer memory degree of depth of its distribution; Directly abandon unnecessary bandwidth, accomplish first order scheduling.
Step C is provided with the interior ring of port of first order scheduling, and the transmission of permission port is set and accepts the Flow Control frame.Certain formation that the port inlet is redirected to the port of second level scheduling is set, i.e. the formation of certain port of certain port of first scheduling corresponding second level scheduling.
Step D is provided with the port outlet shaping of second level scheduling, the formation shaping; Queue scheduling, when certain formation bandwidth of second level scheduling was scheduling to the bandwidth of its distribution above the second level, queue depth was above being the buffer memory degree of depth of its distribution; The corresponding port of first order scheduling sends the Flow Control frame to itself, and the corresponding port of first order scheduling is received the Flow Control frame, suspends TP time continued and sends message; The corresponding formation buffer memory degree of depth of second level scheduling reduces, and bandwidth is controlled, accomplishes second level scheduling.
In addition; As the prerequisite that produces the Flow Control frame; When a formation of N+1 level port surpasses buffer memory; Need to trigger the Flow Control frame and notify N level port to suspend, therefore need the buffer memory of the buffer memory sum of all formations in first port of configuration N level scheduling greater than this formation in second port of N+1 level scheduling.This step also obtains embodying in steps A.
And then, for overflowing of the bandwidth of all formations in first port that prevents N level scheduling, cause the mistake of message transmissions.Two kinds of solutions are provided in the embodiment of the invention.
Method one under the situation that the buffer memory of this formation in second port of N+1 level scheduling does not take, can also confirm that the bandwidth of all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; The bandwidth that abandons all formations in first port of N level scheduling surpasses the part of giving the bandwidth of first port assignment in advance.This preferred implementation is easy, reliable.
Method two under the situation that the buffer memory of this formation in second port of N+1 level scheduling has taken, can also confirm that the bandwidth of all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; After first port of N level scheduling suspended pre-set time interval, continue to carry out with the operation in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling.This preferred embodiment guarantees the integrality of message.
First port time-out pre-set time interval with the scheduling of N level in the method two can comprise: use the Flow Control frame, wherein the Flow Control frame is used to indicate first port with the scheduling of N level to suspend pre-set time interval.This preferred embodiment is easy, reliable.
To combine instance that the implementation procedure of the embodiment of the invention is described in detail below.
Suppose that each port support outlet formation number of switching equipment is 8, switching equipment need be supported three grades of service quality, is divided into service level in logic, user class and site-level.Three grades of service quality can be accomplished through two-level scheduler.A formation of a port of the corresponding first order scheduling of service level, a port of the corresponding first order scheduling of user class (formation of a port of also corresponding second level scheduling), a port of site-level corresponding second level scheduling.Suppose that site-level business comprises 3 user class business, each user class business is divided into 8 service class again.This implementation procedure comprises the steps 1 to step 5.
Step 1; The outlet formation buffer memory of the port of each grade scheduling is set; Each outlet formation buffer memory of first order scheduling is 50; Each outlet formation buffer memory of N+1 level scheduling is 100, and the outlet formation buffer memory sum of first order scheduling is greater than an outlet formation buffer memory of the outbound port of second level scheduling, and it is 1 time interval that the Flow Control frame suspension time is set.
Step 2 is provided with switching equipment and transmits, and site-level business gets into switching equipment from port one; User 1 message is forwarded to port 3; User 2 message is forwarded to port 4, and user 3 message is forwarded to port 5, the formation 1-8 of corresponding each port of each user's service class 1-8.
Step 3 is provided with the outlet shaping of port 3-5 respectively, formation shaping, queue scheduling.When user 1 bandwidth surpasses when dispatching the bandwidth of its distribution for the first order, by the outlet shaping of port 3 unnecessary bandwidth is abandoned, user 2 and 3 bandwidth can be controlled by port 4 and 5 equally; When the message of user 1 service class 1 surpasses the first order and is scheduling to the bandwidth of its distribution, by the shaping of the formation 1 of port 3 unnecessary bandwidth is abandoned, thereby accomplish first order scheduling.
Step 4 is provided with ring in the port 3-5 port, and 3-5 enables Flow Control at port, and the formation 1-3 that port 3-5 inlet is redirected to port 2 is set respectively.
Step 5 is provided with the outlet shaping of port 2, formation shaping, queue scheduling.When the message of site-level business (promptly 3 user class professional sums) surpasses the second level and is scheduling to the bandwidth of its distribution, unnecessary bandwidth is abandoned by the outlet shaping of port 2; When user 1 bandwidth is scheduling to the bandwidth of its distribution above the second level; The degree of depth of the formation 1 of port 2 surpasses 100, and port 3 sends the Flow Control frame to itself, and port 3 is received the Flow Control frame; Suspend and send 1 time interval continued transmission message; The corresponding formation buffer memory degree of depth of second level scheduling reduces, and bandwidth is controlled, thereby accomplishes second level scheduling.
Can realize the two-level scheduler of a plurality of site-level business according to step 2 to step 5.If, a new port is dispatched port as the third level, and can realize three grades of scheduling according to step 3 to step 5 with a plurality of second level scheduling port combination in the above-mentioned steps.And the like, can be combined into multi-stage scheduling.
Need to prove; Can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions; And; Though logical order has been shown in flow chart, in some cases, can have carried out step shown or that describe with the order that is different from here.
The embodiment of the invention provides a kind of implement device of service quality, and this device can be used to realize the implementation method of above-mentioned service quality.Fig. 4 is the structured flowchart according to the implement device of the service quality of the embodiment of the invention, and is as shown in Figure 4, comprises the redirection module 42 and first Executive Module 44.
Fig. 5 is the structured flowchart one of the implement device of service quality according to the preferred embodiment of the invention; As shown in Figure 5; Said apparatus also comprises: configuration module 46, the buffer memory sum of all formations of first port that is used for confirming the scheduling of N level is greater than the buffer memory of this formation in second port of N+1 level scheduling.
Fig. 6 is the structured flowchart two of the implement device of service quality according to the preferred embodiment of the invention; As shown in Figure 6; Redirection module 42 comprises: first determination module 422; Be used under the situation that the buffer memory in this formation of second port of N+1 level scheduling do not take, confirm that the bandwidth of all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; Discard module 424 is connected to first determination module 422, and the bandwidth of all formations that is used for abandoning first port of N level scheduling surpasses the part of giving the bandwidth of first port assignment in advance.
Fig. 7 is the structured flowchart three of the implement device of service quality according to the preferred embodiment of the invention; As shown in Figure 7; Being redirected 42 also comprises: second determination module 426; Be used under the situation that the buffer memory in this formation of second port of N+1 level scheduling taken, confirm that the bandwidth of all formations in first port of N level scheduling surpasses the bandwidth of giving first port assignment in advance; Second Executive Module 428; Be connected to second determination module 426; After being used for first port with N level scheduling and suspending pre-set time interval, continue to carry out with the operation in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling.
Need to prove that the implement device of the service quality of describing among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, repeat no more at this.
In sum, according to the abovementioned embodiments of the present invention, a kind of implementation method and device of service quality is provided.Through the present invention, with the port of the message redirecting of dispatching out switching equipment, solved the problem of the requirement that is difficult to satisfy this large-scale consumer, multi-service kind in the correlation technique, and then satisfied the demand of large-scale consumer to switching equipment.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the implementation method of a service quality is characterized in that comprising:
In the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling, wherein N is a positive integer;
Use said message, carry out said N+1 level scheduling.
2. method according to claim 1; It is characterized in that; Before in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling, also comprise: dispose the buffer memory of the buffer memory sum of all formations in first port of N level scheduling greater than this formation in second port of N+1 level scheduling.
3. method according to claim 2; It is characterized in that; Under the situation that the buffer memory of this formation in second port of said N+1 level scheduling does not take, with comprising in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling:
The bandwidth of confirming all formations in first port of said N level scheduling surpasses the bandwidth of giving said first port assignment in advance;
The bandwidth that abandons all formations in first port of said N level scheduling surpasses said part of giving the bandwidth of said first port assignment in advance.
4. method according to claim 2; It is characterized in that; Under the situation that the buffer memory of this formation in second port of said N+1 level scheduling has taken, with comprising in the formation in second port of N+1 level scheduling of the message redirecting of first port of N level scheduling:
The bandwidth of confirming all formations in first port of said N level scheduling surpasses the bandwidth of giving said first port assignment in advance;
After first port of said N level scheduling suspended pre-set time interval, the operation in the formation in second port that the message redirecting that continues to carry out first port that will said N level scheduling is dispatched to said N+1 level.
5. method according to claim 4; It is characterized in that; First port time-out pre-set time interval of said N level scheduling is comprised: use the Flow Control frame, wherein said Flow Control frame is used to indicate first port with said N level scheduling to suspend said pre-set time interval.
6. the implement device of a service quality is characterized in that comprising:
Redirection module is used for message redirecting with first port of N level scheduling in a formation of second port of N+1 level scheduling, and wherein N is a positive integer;
First Executive Module is used to use said message, carries out said N+1 level scheduling.
7. device according to claim 6 is characterized in that, also comprises: configuration module, the buffer memory sum of all formations of first port that is used for disposing the scheduling of N level is greater than the buffer memory of this formation in second port of N+1 level scheduling.
8. device according to claim 7 is characterized in that, said redirection module comprises:
First determination module is used under the situation that the buffer memory in this formation of second port of said N+1 level scheduling do not take, confirms that the bandwidth of all formations in first port of said N level scheduling surpasses the bandwidth of giving said first port assignment in advance;
Discard module, the bandwidth of all formations that is used for abandoning first port of said N level scheduling surpasses said part of giving the bandwidth of said first port assignment in advance.
9. device according to claim 7 is characterized in that, said redirection module also comprises:
Second determination module is used under the situation that the buffer memory in this formation of second port of said N+1 level scheduling taken, confirms that the bandwidth of all formations in first port of said N level scheduling surpasses the bandwidth of giving said first port assignment in advance;
Second Executive Module; After being used for first port with the scheduling of said N level and suspending pre-set time interval, the operation in the formation in second port that the message redirecting that continues to carry out first port that will said N level scheduling is dispatched to said N+1 level.
10. device according to claim 9 is characterized in that, said second Executive Module comprises: use the Flow Control frame, wherein said Flow Control frame is used for indication and suspends said pre-set time interval.
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| CN103812787A (en) * | 2014-03-03 | 2014-05-21 | 国家电网公司 | Electric power telecommunication network message prior forwarding method |
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