CN100370779C - Method and apparatus for effective utilizing bandwidth resource in elastic block ring network - Google Patents
Method and apparatus for effective utilizing bandwidth resource in elastic block ring network Download PDFInfo
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- CN100370779C CN100370779C CNB2004100767128A CN200410076712A CN100370779C CN 100370779 C CN100370779 C CN 100370779C CN B2004100767128 A CNB2004100767128 A CN B2004100767128A CN 200410076712 A CN200410076712 A CN 200410076712A CN 100370779 C CN100370779 C CN 100370779C
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Abstract
The present invention relates to a bandwidth allocation method and a device aiming at different services in a resilient packet ring network. The present invention renders rate shapers to occupy a recoverable bandwidth resource setting the rate shapers mainly by providing and using the multichannel input rate shapers to carry out control management of the bandwidth resource in the RPR (resilient packet ring) network, and thereby, effectively ensures the resource utilization rate in the RPR network. Simultaneously, for guaranteeing the transmission requirements of the allocation of the services of recoverable bandwidth, the present invention also designs a corresponding guarantee measure for guaranteeing the recoverable bandwidth which is assigned to the rate shapers and occupied by other services to be recovered and used when the rate shapers need. Therefore, the realization of the present invention provides a feasible technical scheme for the current suggestion aiming at bandwidth recovery of the RPR network.
Description
Technical field
The present invention relates to network communications technology field, relate in particular in a kind of RPR network bandwidth allocation methods and device at the inhomogeneity business.
Background technology
RPR (Resilient Packet Ring) technology is a kind of emerging metropolitan area network networking technology; belong to MAC (medium access control) layer protocol; the RPR technology is to propose for the transmission of optimizing packet; it has absorbed the economy of gigabit ethernet technology; SDH (Synchronous Digital Hierarchy) technology is to the strictness guarantee of time-delay and shake, and characteristics such as ring protection of 50ms looped network and recovery, and has spatial reuse; Bandwidth Dynamic Allocation is supported characteristics such as multi-service rank.This makes its a kind of optimisation technique that becomes current optical-fiber network transmitting data bag, is just obtaining industry and is paying close attention to widely and pay attention to.
For the RPR technology is had further understanding, in conjunction with the accompanying drawings the structure of RPR looped network and the structure of node are further described again below.
The RPR looped network is to adopt reverse twin nuclei, and interior ring and outer shroud are independently of one another, can finish Frame and send and receive, and backups each other again, protects simultaneously.Looped network can support 255 nodes to link to each other at most.Optimized looped network maximum perimeter is 2000 kilometers.The RPR ring network structure as shown in Figure 1, wherein outer shroud is defined as ringlet0, interior ring is defined as ringlet1; S is each node; Part between two nodes is defined as span; Each connection between two nodes is defined as links.
The structure of RPR node is made up of physical layer entity and MAC entity then as shown in Figure 2, and wherein the MAC entity comprises a MAC controlled entity, i.e. control among the figure, and two data passage entities and hoop are selected entity, i.e. select among the figure.Outer loop data receives into to physical entity by the west, receives through the outer shroud data channel and is sent to MAC client (user side entity) or passes through the forwarding of east orientation physical entity.Interior loop data receives into by the east orientation physical entity, and the interior loop data passage reception of process is sent to the user side entity or is transmitted to physical entity by the west.When receiving two hoop data, the user side entity can send the data upper ring net by two physical entities of thing.
In the network application process, different application is different to the sensitivity of Network Transmission time-delay and delay variation.For example, the real-time voice business has strict delay requirement to transmission, but can tolerate a spot of packet loss, and FTP (file transfer protocol (FTP)) application can't stand packet loss, but time delay there is not strict demand.When Internet resources limited, when simultaneously traffic carrying capacity is bigger, need be according to type of service and its different control corresponding mechanism of taking to service request.The RPR agreement has proposed by business is classified, and different types of service is adopted the suggestion of different allocated bandwidth modes, satisfies the requirement of different business to Network Qos (service quality) with this as far as possible; At present, at the MAC of RPR layer, customer data is divided into 3 types, specifically sees the following form:
| Service priority | Service quality | Controlled by the RPR fair algorithm | Use | |||
| class | subclass | Bandwidth guarantees | Delay jitter | Bandwidth types | ||
| A | A0 | Yes | low | The bandwidth reserved that distributes | No | Real time |
| A1 | That distributes is recyclable | |||||
| B | B_CIR | Bounded | Near real time | |||
| B_EIR | No | unbounded | Contention | Yes | ||
| C | - | Best effort | ||||
In the table:
ClassA:A class service bandwidth distributes, and can obtain secure CIR (information rate), the very low end-to-end delay and the shake of certain limit.ClassA is divided into two sub-grade: subclassA0 again corresponding to the bandwidth of reserving, subclassA1 is corresponding to callable bandwidth, so-called callable bandwidth be meant distribute to A1 class business but A1 class business wouldn't use, and other business can busy bandwidth;
ClassB: in the bandwidth range that distributes, promptly the B_CIR in the table provides guaranteed bandwidth, the time-delay of certain limit and shake.Be called as " excess information rate (EIR) " to surpassing the portions of bandwidth of distributing, promptly the B_EIR in the table provides the data of doing one's best to transmit, and the bandwidth of not giving security does not guarantee its time-delay and shake yet, controlled by the fair algorithm of RPR to this partial service;
ClassC: provide the data of doing one's best to transmit, the bandwidth of not giving security does not guarantee its time-delay and shake yet, controlled by the fair algorithm of RPR to this partial service;
From passing through of proposing of above-mentioned RPR agreement to business classify different types of service is adopted different allocated bandwidth modes suggestion as can be seen: the MAC layer of RPR wishes to guarantee by the method for allocating bandwidth (claiming RSVP again) in advance the committed information rate of A service and b service, but the MAC layer is not done allocated bandwidth to c service, bandwidth only is provided at random, be that c service can only be used the bandwidth that does not have distribution or distribute to A, b service but callable bandwidth, therefore looped network can not be promised to undertake the minimum bandwidth and the maximum delay shake that can provide to c service, promptly does one's best.When the bandwidth resources contention occurring, RPR MAC uses WFA (Weight Faimess Algorithm, weighted-fair algorithm) to come c service is carried out rate controlled.Can also be further divided into two subclasses in the inner A service of MAC: A0 subclass, A1 subclass.The purpose of doing this division improves looped network and reclaims those and distributed to A service but the ability that not have bandwidth of use.The bandwidth of distributing when the A1 subclass is not used or when not running out, can be by B, and the C class is recycled.
In the bandwidth allocation scheme of the above-mentioned different service types that proposes at the RPR agreement, also there is not at present a kind of feasible solution, thereby make the bandwidth that in the RPR looped network, also can't realize described all kinds of business at present reclaim, so also just can't guarantee effective utilization of bandwidth resources in the RPR looped network, equally also can't guarantee in the RPR looped network dissimilar business to be adopted the bandwidth allocation scheme of different stage.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the method and the device that effectively utilize bandwidth resources in a kind of RPR network, thereby be implemented in the RPR looped network and can provide different bandwidth allocation scheme at dissimilar business, guaranteed that the bandwidth resources in the RPR looped network can effectively be utilized.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the method for effectively utilizing bandwidth resources in a kind of RPR network, comprising:
A, the rate corresponding reshaper is set respectively at the different kinds of business in the RPR net, and set the Control Parameter of each rate shaper respectively, and the transmission control mode that rate shaper is set, described transmission control mode comprises the control mode that is associated between each rate shaper;
The control mode that is associated between described each rate shaper is: between the recyclable rate shaper of described bandwidth, and recyclable rate shaper of bandwidth and the control mode that is associated that reclaims between the bandwidth rates reshaper;
The described control mode that is associated is: the bandwidth resources that the rate shaper that setting is associated with the recyclable rate shaper of bandwidth can take comprise the bandwidth resources that the recyclable rate shaper of described bandwidth is assigned to; When the recyclable rate shaper corresponding service of described bandwidth arrives, need carry out the adjustment of bandwidth to recyclable rate shaper of described bandwidth and the rate shaper that is associated with it;
B, the business that need transmit in the RPR net are selected the rate corresponding reshaper according to its type of service, and carry out professional transmission according to Control Parameter of setting and transmission control mode.
Effectively utilize in the described RPR network in the method for bandwidth resources, the described different kinds of business of steps A is: in RPR net, divide its branch into different kinds of business according to the transmission priority of business to be transmitted.
Described method also comprises: be the bandwidth reserved rate shaper of the business setting correspondence of distributing bandwidth reserved.
The business of the recyclable bandwidth of described distribution further comprises: the business of the recyclable bandwidth of distribution of a plurality of different priorities, and the corresponding respectively rate shaper with respective priority that is being provided with of each business.
Effectively utilize in the described RPR network in the method for bandwidth resources, the Control Parameter of described each rate shaper of steps A comprises:
Token number, token update cycle, token maximum, token minimum value and the packet loss threshold value of distributing.
The described control mode that is associated also comprises:
The described rate shaper that is associated with the recyclable rate shaper of bandwidth comprises: callable rate shaper of the bandwidth of each priority or recovery bandwidth rates reshaper.
The described control mode that is associated also comprises:
The bandwidth resources of the recyclable rate shaper of described bandwidth have been taken when the described rate shaper that is associated with the recyclable rate shaper of bandwidth, and when the recyclable rate shaper corresponding service of described bandwidth arrives, then need to forbid to continue to transmit the rate shaper corresponding service that the recyclable rate shaper of described and bandwidth that takies its bandwidth resources is associated.
The present invention also provides the device that effectively utilizes bandwidth resources in a kind of RPR network, comprising:
Transport service analyzer: analyze business waiting for transmission, and described business is sent to the RSVP rate shaper corresponding with it, recyclable bandwidth rates reshaper or reclaims the bandwidth rates reshaper according to the type of business;
RSVP rate shaper:, be used for the business of the RSVP of control transmission RPR net for it distributes fixing and bandwidth resources that other rate shaper cannot take;
The recyclable rate shaper of bandwidth:, be used for the business of the recyclable bandwidth of distribution of control transmission RPR net for it distributes the bandwidth resources that need and other rate shaper can take;
Reclaim the bandwidth rates reshaper: be used for the business that the recyclable bandwidth that can be utilized as other traffic assignments of control transmission RPR net is transmitted, the bandwidth resources that this rate shaper can take comprise the bandwidth resources that the recyclable rate shaper that is associated with it is assigned to.
Between the recyclable rate shaper of described bandwidth, and the recyclable rate shaper of bandwidth is provided with the control mode that is associated with reclaiming between the bandwidth rates reshaper, and the described control mode that is associated comprises: the bandwidth resources that the rate shaper that setting is associated with the recyclable rate shaper of bandwidth can take comprise the bandwidth resources that the recyclable rate shaper of this described bandwidth is assigned to; When the recyclable rate shaper corresponding service of described bandwidth arrives, need carry out the adjustment of bandwidth to recyclable rate shaper of described bandwidth and the rate shaper that is associated with it;
The described rate shaper that can take the bandwidth resources that other rate shaper are assigned to is provided with the passage that is connected with the rate shaper of occupied bandwidth resources, and this passage is used to transmit the resource occupation information of the type of service that the rate shaper of occupied bandwidth resources controls.
Effectively utilize in the device of bandwidth resources in the described RPR network:
The recyclable rate shaper of described bandwidth further comprises:
The recyclable rate shaper of high priority bandwidth: distribute to need and bandwidth resources that other rate shaper can take for it are used for the business of the recyclable bandwidth of distribution of the high priority of control transmission RPR net;
The recyclable rate shaper of low priority bandwidth: add the bandwidth that the recyclable rate shaper of high priority bandwidth is assigned to for it distributes the bandwidth that self needs, and other rate shaper can take these bandwidth resources, are used for the business of the recyclable bandwidth of distribution of control transmission RPR net;
The recyclable rate shaper of described bandwidth further comprises:
The recyclable rate shaper of a plurality of bandwidth, the bandwidth resources that the recyclable reshaper of each bandwidth can take are included as the bandwidth resources of the needs that self distribute and add the bandwidth resources that the recyclable rate shaper of other bandwidth is assigned to, and are used for the business of the recyclable bandwidth of distribution of control transmission RPR net.
As seen from the above technical solution provided by the invention, the present invention has adopted the rate shaper of multichannel input, make to take the callable bandwidth resources of setting rate shaper between each rate shaper, thereby guaranteed the resource utilization in the RPR network effectively.That is to say, in network transmission process, the lower business of professional transmission priority can take distribute and the untapped recyclable bandwidth resources into high-priority service, and when carrying out the transmission of high-priority service, needs are recoverable to occupied bandwidth resources, like this, improve service transmission performance in the network, and improved the utilance of network bandwidth resources.
Of the present inventionly be embodied as the suggestion that current bandwidth at the RPR network reclaims comparatively feasible technical scheme has been arranged, reasonably solved the problem that bandwidth resources are effectively utilized in the RPR network.
Description of drawings
Fig. 1 is a RPR ring network structure schematic diagram;
Fig. 2 is the structural representation of RPR looped network and node wherein;
Fig. 3 carries out the schematic diagram of rate limit for application rate reshaper in the RPR looped network;
Fig. 4 is the structural representation of described rate shaper;
Fig. 5 is the principle schematic that bandwidth of the present invention reclaims;
Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10 are respectively different bandwidth removal process schematic diagrames.
Embodiment
Core concept of the present invention is effective utilization that the rate shaper (being Shaper) of the multichannel input of utilization setting realizes bandwidth resources in the RPR network, make and distributed the rate shaper of recyclable bandwidth resources not use at own service under the situation of these bandwidth resources, described recyclable bandwidth resources can be by other service application.
The embodiment of method of the present invention is as described below:
At first, need the rate corresponding reshaper be set respectively at the different kinds of business in the RPR net, and set the Control Parameter of each rate shaper respectively and transmit control mode, described transmission control mode comprises the control mode that is associated between each rate shaper;
Described different kinds of business is: in the RPR net, transmission priority according to business to be transmitted divides its branch into different kinds of business, described different kinds of business can comprise: the business of distributing bandwidth reserved, distribute the business of recyclable bandwidth and can utilize the business that reclaims bandwidth, each professional priority level reduces successively, and the business of the recyclable bandwidth of wherein said distribution can also further be divided into the type of service of a plurality of different priority levels, specifically can describe shown in the table partly referring to background technology, certainly, in actual application, can adopt other type of service dividing mode as required; Be respectively bandwidth reserved rate shaper, the recyclable rate shaper of bandwidth and reclaim the bandwidth rates reshaper with the rate shaper of the corresponding setting of described variant type service; Wherein, corresponding respectively again the rate shaper that is being provided with of the business of the recyclable bandwidth of distribution of professional included a plurality of different priorities of the recyclable bandwidth of described distribution with respective priority;
The Control Parameter of each rate shaper of described setting comprises: the token number Credit of distribution, token update cycle Interval (token number of this parameter and distribution has determined the speed of professional transmission), token maximum HiLimit, token minimum value Lowlimit and packet loss threshold value Drpthreshd; Based on the parameter of setting, the bandwidth calculation of actual allocated is as follows: average limiting speed=Credit/Interval, maximum burst speed=HiLimit/Interval;
Each rate shaper all has a token bucket " token bucket ", each token update cycle token bucket will increase the token of some, and the byte that flows through as the out-of-date meeting basis of Business Stream that this rate shaper is controlled reduces the token quantity in the token bucket simultaneously.Each rate shaper is equipped with three thresholdings: high threshold (being Highlimit), low threshold (being Lowlimit) and packet loss thresholding (being Drpthreshd), the effect of three thresholdings is: when token increases, current token number learnt from else's experience all the time the token update cycle after increasing token number and the smaller value in wealthy family's limit value, thereby burst flow in the limiting network; When the token of token bucket is lower than low threshold, to represent token in the token bucket to use up and should provide index signal, indication should stop to send the business of corresponding types;
The control mode that is associated between described each rate shaper comprises: between the recyclable rate shaper of described bandwidth, and recyclable rate shaper of bandwidth and the control mode that is associated that reclaims between the bandwidth rates reshaper; That is to say, the control mode that is associated between described each rate shaper can be the control mode that is associated between the recyclable rate shaper of bandwidth of similar and different priority, also can be the recyclable rate shaper of bandwidth of similar and different priority and reclaims the control mode that is associated between the bandwidth rates reshaper;
The described control mode that is associated specifically comprises:
The bandwidth resources that the rate shaper that setting is associated with the recyclable rate shaper of bandwidth can take comprise the bandwidth resources that the recyclable rate shaper of this described bandwidth is assigned to; Wherein, the described rate shaper that is associated with the recyclable rate shaper of bandwidth can or reclaim the bandwidth rates reshaper for: the callable rate shaper of the bandwidth of each priority, need to prove, in application process, can be set to only to have the recyclable bandwidth resources of the recyclable rate shaper of bandwidth of high priority or to reclaim the bandwidth rates reshaper by the recyclable rate shaper of the bandwidth of low priority and take, the recyclable rate shaper of bandwidth that also can be set to similar and different priority can take the recyclable bandwidth resources of distributing into each other mutually; The bandwidth resources that described rate shaper can take are meant when this rate shaper corresponding service arrives, adaptable bandwidth resources when carrying out the business transmission;
When the recyclable rate shaper corresponding service of described bandwidth arrives, need carry out the adjustment of bandwidth to the recyclable rate shaper of described bandwidth and this rate shaper that is associated with it, promptly deduct the bandwidth resources that take this business transmission course from reaching this rate shaper that is associated with it from the recyclable rate shaper of described bandwidth respectively;
The bandwidth resources of the recyclable rate shaper of bandwidth that is associated with it have been taken when described rate shaper, and when the rate shaper corresponding service that is associated with it arrives, then need to forbid continuing to transmit the rate shaper corresponding service that takies its bandwidth resources, can preferentially use the recyclable bandwidth resources of self distributing to guarantee the recyclable rate shaper of each bandwidth.
After having passed through above-mentioned configuration process, then in the RPR network, the business that need transmit can be selected the rate corresponding reshaper according to its type of service in the RPR net, and carry out professional transmission according to Control Parameter of setting and transmission control mode.
The present invention also provides the device that effectively utilizes bandwidth resources in a kind of RPR net, and as shown in Figure 4 and Figure 5, this device specifically comprises:
Transport service analyzer: analyze business waiting for transmission, and according to the type of business described business is sent to the RSVP rate shaper corresponding with it, recyclable bandwidth rates reshaper or reclaims the bandwidth rates reshaper, this analyzer is arranged in the user side Client of Fig. 5;
RSVP rate shaper: for it distributes fixing and bandwidth resources that other rate shaper cannot take, the business that is used for the RSVP of control transmission RPR net, as the ShaperA0 among Fig. 5, this rate shaper is applicable to that transmission priority does not require than higher business in the network;
The recyclable rate shaper of bandwidth:, be used for the business of the recyclable bandwidth of distribution of control transmission RPR net, as ShaperA1 among Fig. 5 and ShaperB for it distributes the bandwidth resources that need and other rate shaper can take;
The recyclable rate shaper of described bandwidth further comprises:
The recyclable rate shaper of high priority bandwidth: distribute to need and bandwidth resources that other rate shaper can take for it are used for the business of the recyclable bandwidth of distribution of the high priority of control transmission RPR net, ShaperA1 as shown in Figure 5;
The recyclable rate shaper of low priority bandwidth: add the bandwidth that the recyclable rate shaper of high priority bandwidth is assigned to for it distributes the bandwidth that self needs, and other rate shaper can take these bandwidth resources, the business that is used for the recyclable bandwidth of distribution of control transmission RPR net, ShaperB as shown in Figure 5;
Perhaps, the recyclable rate shaper of described bandwidth can further include the recyclable rate shaper of a plurality of bandwidth, the bandwidth resources that the recyclable reshaper of each bandwidth can take are included as the bandwidth resources of the needs that self distribute and add the bandwidth resources that the recyclable rate shaper of other bandwidth is assigned to, and are used for the business of the recyclable bandwidth of distribution of control transmission RPR net;
Reclaim the bandwidth rates reshaper: be used for the business that the recyclable bandwidth that can be utilized as other traffic assignments of control transmission RPR net is transmitted, the bandwidth resources that this rate shaper can take comprise the bandwidth resources that the recyclable rate shaper that is associated with it is assigned to, as the ShaperF among Fig. 5, this rate shaper is applicable to the lower business of transmission priority in the network.
In this device, the described rate shaper that can take the bandwidth resources that other rate shaper are assigned to is provided with the passage that is connected with the rate shaper of occupied bandwidth resources, described passage is used to transmit the resource occupation information of the type of service that the rate shaper of occupied bandwidth resources controls, that is to say the recyclable rate shaper of described bandwidth and reclaim the bandwidth rates reshaper to comprise a plurality of input channels, as shown in Figure 4.
The front implements to try to be illustrated to method of the present invention and device, and the invention will be further described in conjunction with concrete application example more below.To the control of speed, the core devices that recovery utilized of bandwidth is rate shaper Shaper in the RPR technology, and the quality of rate shaper design is directly connected to the performance of product.In order to simplify actual design, we have adopted general rate shaper Shaper circuit in the RPR of reality chip design, three threshold values of She Dinging (high threshold, low threshold and packet loss thresholding) wherein, and the token number of token update cycle and distribution all is configurable, can realize the rate shaper that needs in the various RPR net by different parameter configuration, the needs that reclaim according to present RPR bandwidth can be determined that described rate shaper is maximum and support that four groups of inputs promptly can satisfy the demands.The token quantity information that the flow that every group of input provides the token information of present rate type of service that reshaper is controlled, described token information to be described type of service need take.Expanded the Business Stream quantity that the Shaper circuit is controlled by the rate shaper that designs many group inputs, satisfied the demand that bandwidth resources provided by the invention are utilized scheme, just need four groups of inputs as the shaperD among Fig. 5.The input group number of rate shaper can also be set in the practical design process certainly, according to the actual needs.
Allocated bandwidth suggestion during now the RPR that still provides with the described chart of background technology part nets is that example is to the present invention.
At first, the recovery method of b service to the recyclable bandwidth of A1 class business is described, as Fig. 5, Fig. 6, Fig. 7 and shown in Figure 8;
By to ShaperA1, the bandwidth of ShaperB is unified to limit and realized that b service reclaims specific implementation as shown in Figure 5 to the bandwidth of A1 class business: ShaperA1 only limits A1 class service rate, ShaperB restriction A1 class service rate and b service speed, the A1 class business that this moment, user side entity MAC client issued subtracts ShaperA1 token and ShaperB token simultaneously, then only subtract the ShaperB token at the b service that issues, specifically be to realize by the channel selecting signal of control rate shaper, for example, when the user side entity issues A1 class business, channel selecting signal with seasonal described rate shaper ShaperA1 and ShaperB is effectively (when this signal is effective, then corresponding rate shaper will be carried out token according to the size of the traffic carrying capacity that flows through and be reduced processing), when issuing b service, then only make the channel selecting signal of rate shaper ShaperB effective.And band width configuration can be carried out corresponding change, the bandwidth of ShaperA1 configuration is to distribute to the bandwidth of A1 class business, the bandwidth of ShaperB configuration is to distribute to the bandwidth sum of A1 class business and b service, so just, can finish b service to A1 class traffic assignments to the taking of recyclable bandwidth, realize that promptly b service reclaims the bandwidth of A1 class business
The bandwidth B andwidthA1 that supposes to distribute to A1 class business is 100M, the bandwidth B andwidthB that distributes to b service is 100M, reclaim consideration based on bandwidth, can with the band width configuration of ShaperA1 100M, the band width configuration of ShaperB is 200M, when the user side entity issues A1 class business, choose the input channel of ShaperA1 and ShaperB simultaneously, when issuing b service, the user side entity chooses the input channel of ShaperB.
Wherein, b service reclaims that the A1 class is professional not to have the situation of the A1 class bandwidth used to be: be 50M when the user side entity issues A1 class service bandwidth, then ShaperB also has the 150M bandwidth to use for b service, is equivalent to B and can uses the not 50M bandwidth of usefulness of A1 class business, as shown in Figure 6.
The professional also recyclable bandwidth of " having been occupied " by b service of A1 class, concrete processing procedure is: it is 50M that the user side entity issues A1 class service bandwidth, b service can issue 150M, when the business of A1 class sending down service 60M, because the ShaperB bandwidth uses up (A1 50M, B 150M) back-pressure user side entity then, forbid sending b service, and since the bandwidth of ShaperA1 do not use up, so back-pressure not, can go up the 60M bandwidth, as shown in Figure 7.If the A1 class service bandwidth that the user side entity issues continues to increase before the ShaperA1 bandwidth uses up, all can regain the bandwidth of " having been occupied " by b service, last A1 issues 100M, B issues 100M, as shown in Figure 8, by to ShaperA1, the ShaperB bandwidth is unified to limit and has been realized that b service reclaims the bandwidth of A1 class business, simultaneously A1 class business recoverable again bandwidth of being occupied by B.
Secondly, again the processing procedure that c service is professional to the A1 class and the b service bandwidth reclaims is described.As shown in Figure 5, ShaperF only limits c service speed, ShaperD restriction A1 class, category-B and c service speed, all non-A0 class business that this moment, user side entity MAC client issued all subtract the ShaperD token, and are same, can realize by the channel selecting signal of control rate shaper; The bandwidth of ShaperD configuration is the bandwidth of the non-A0 class of looped network business; Because the c service bandwidth is indistributable, belong to and reclaim the bandwidth rates reshaper, in theory can, so can be with the ShaperF configuration very big.
Suppose the business that do not have physical layer entity to transmit this moment, establishing the bandwidth of distributing to A1 class business is 100M, and the bandwidth of distributing to b service is 100M, and the bandwidth of ShaperD configuration is 500M, and the bandwidth of ShaperF configuration is 500M.A1 class business is chosen ShaperA1 simultaneously, and the input channel of ShaperB and ShaperD, b service are chosen the input channel of ShaperB and ShaperD, and c service is chosen the input channel of ShaperF and ShaperD.
Wherein, c service reclaims A1, b service does not have the processing procedure of the bandwidth used to be: respectively be 50M when the user side entity issues A1, b service bandwidth, then ShaperB also has the 100M remaining bandwidth, and wherein 50M is the professional remaining bandwidth of A1 class, and 50M is the b service remaining bandwidth.The also surplus 400M bandwidth of ShaperD can be used for c service, and the bandwidth of ShaperF configuration is 500M, does not provide constraints, as shown in Figure 9.
The processing procedure that A1, b service are regained the bandwidth of " being occupied " by c service is: when the user side entity issues A1 class service bandwidth is 50M, then ShaperB also has 150M, as issuing b service this moment in a large number, then B preferentially occupies the bandwidth of A1, and the also surplus 300M bandwidth of ShaperD can use for c service.As shown in figure 10, realize c service to A1 by said method, the bandwidth of b service reclaims, while A1, the recoverable again bandwidth of being occupied by c service of b service
By foregoing description as can be seen, by designing the rate shaper of four-way input, according to the different various rate shaper shM that require in the RPR agreement shown in Figure 3 of having realized of configuration, shl, shA0, shA1, shB, shF, shD etc., this controller uses flexibly, and is powerful, greatly simplified design.
Simultaneously, utilize general rate shaper flexible characteristic, only just finished b service A1 class service bandwidth is reclaimed by change configuration and control signal.
In addition, finished the bandwidth recovery of c service by configuration and the control signal of changing general rate shaper to A1 class business and b service.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (10)
1. effectively utilize the method for bandwidth resources in the RPR network, it is characterized in that comprising:
A, the rate corresponding reshaper is set respectively at the different kinds of business in the RPR net, and set the Control Parameter of each rate shaper respectively, and the transmission control mode that rate shaper is set, described transmission control mode comprises the control mode that is associated between each rate shaper
The control mode that is associated between described each rate shaper is: between the recyclable rate shaper of described bandwidth, and recyclable rate shaper of bandwidth and the control mode that is associated that reclaims between the bandwidth rates reshaper;
The described control mode that is associated is: the bandwidth resources that the rate shaper that setting is associated with the recyclable rate shaper of bandwidth can take comprise the bandwidth resources that the recyclable rate shaper of described bandwidth is assigned to; When the recyclable rate shaper corresponding service of described bandwidth arrives, need carry out the adjustment of bandwidth to recyclable rate shaper of described bandwidth and the rate shaper that is associated with it;
B, the business that need transmit in the RPR net are selected the rate corresponding reshaper according to its type of service, and carry out professional transmission according to Control Parameter of setting and transmission control mode.
2. effectively utilize the method for bandwidth resources in the RPR network according to claim 1, it is characterized in that the described different kinds of business of steps A is: in RPR net, divide its branch into different kinds of business according to the transmission priority of business to be transmitted.
3. effectively utilize the method for bandwidth resources in the RPR network according to claim 1, it is characterized in that described method also comprises: be the bandwidth reserved rate shaper of the business setting correspondence of distributing bandwidth reserved.
4. effectively utilize the method for bandwidth resources in the RPR network according to claim 1, the business that it is characterized in that the recyclable bandwidth of described distribution further comprises: the business of the recyclable bandwidth of distribution of a plurality of different priorities, and the corresponding respectively rate shaper with respective priority that is being provided with of each business.
5. effectively utilize the method for bandwidth resources in the RPR network according to claim 1, it is characterized in that the Control Parameter of described each rate shaper of steps A comprises:
Token number, token update cycle, token maximum, token minimum value and the packet loss threshold value of distributing.
6. effectively utilize the method for bandwidth resources in the RPR network according to claim 1, it is characterized in that the described control mode that is associated also comprises:
The described rate shaper that is associated with the recyclable rate shaper of bandwidth comprises: callable rate shaper of the bandwidth of each priority or recovery bandwidth rates reshaper.
7. effectively utilize the method for bandwidth resources in the RPR network according to claim 1, it is characterized in that the described control mode that is associated also comprises:
The bandwidth resources of the recyclable rate shaper of described bandwidth have been taken when the described rate shaper that is associated with the recyclable rate shaper of bandwidth, and when the recyclable rate shaper corresponding service of described bandwidth arrives, then need to forbid to continue to transmit the rate shaper corresponding service that the recyclable rate shaper of described and bandwidth that takies its bandwidth resources is associated.
8. effectively utilize the device of bandwidth resources in the RPR network, it is characterized in that comprising:
Transport service analyzer: analyze business waiting for transmission, and described business is sent to the RSVP rate shaper corresponding with it, recyclable bandwidth rates reshaper or reclaims the bandwidth rates reshaper according to the type of business;
RSVP rate shaper:, be used for the business of the RSVP of control transmission RPR net for it distributes fixing and bandwidth resources that other rate shaper cannot take;
The recyclable rate shaper of bandwidth:, be used for the business of the recyclable bandwidth of distribution of control transmission RPR net for it distributes the bandwidth resources that need and other rate shaper can take;
Reclaim the bandwidth rates reshaper: be used for the business that the recyclable bandwidth that can be utilized as other traffic assignments of control transmission RPR net is transmitted, the bandwidth resources that this rate shaper can take comprise the bandwidth resources that the recyclable rate shaper that is associated with it is assigned to;
Between the recyclable rate shaper of described bandwidth, and the recyclable rate shaper of bandwidth is provided with the control mode that is associated with reclaiming between the bandwidth rates reshaper, and the described control mode that is associated comprises: the bandwidth resources that the rate shaper that setting is associated with the recyclable rate shaper of bandwidth can take comprise the bandwidth resources that the recyclable rate shaper of this described bandwidth is assigned to; When the recyclable rate shaper corresponding service of described bandwidth arrives, need carry out the adjustment of bandwidth to recyclable rate shaper of described bandwidth and the rate shaper that is associated with it;
The described rate shaper that can take the bandwidth resources that other rate shaper are assigned to is provided with the passage that is connected with the rate shaper of occupied bandwidth resources, and this passage is used to transmit the resource occupation information of the type of service that the rate shaper of occupied bandwidth resources controls.
9. effectively utilize the device of bandwidth resources in the RPR network according to claim 8, it is characterized in that:
The recyclable rate shaper of described bandwidth further comprises:
The recyclable rate shaper of high priority bandwidth: distribute to need and bandwidth resources that other rate shaper can take for it are used for the business of the recyclable bandwidth of distribution of the high priority of control transmission RPR net;
The recyclable rate shaper of low priority bandwidth: add the bandwidth that the recyclable rate shaper of high priority bandwidth is assigned to for it distributes the bandwidth that self needs, and other rate shaper can take these bandwidth resources, are used for the business of the recyclable bandwidth of distribution of control transmission RPR net.
10. effectively utilize the device of bandwidth resources in the RPR network according to claim 8, it is characterized in that, the recyclable rate shaper of described bandwidth further comprises:
The recyclable rate shaper of a plurality of bandwidth, the bandwidth resources that the recyclable reshaper of each bandwidth can take are included as the bandwidth resources of the needs that self distribute and add the bandwidth resources that the recyclable rate shaper of other bandwidth is assigned to, and are used for the business of the recyclable bandwidth of distribution of control transmission RPR net.
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| CNB2004100767128A CN100370779C (en) | 2004-08-29 | 2004-08-29 | Method and apparatus for effective utilizing bandwidth resource in elastic block ring network |
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| CNB2004100767128A CN100370779C (en) | 2004-08-29 | 2004-08-29 | Method and apparatus for effective utilizing bandwidth resource in elastic block ring network |
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| CN100370779C true CN100370779C (en) | 2008-02-20 |
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| CN104639463A (en) * | 2015-02-25 | 2015-05-20 | 浪潮电子信息产业股份有限公司 | Bandwidth regulating method and bandwidth regulating device for optical fiber switch |
| CN104915312B (en) * | 2015-04-17 | 2017-12-29 | 苏州中晟宏芯信息科技有限公司 | A kind of channel resource recovery expanding method of high speed serialization link |
| CN107733983B (en) * | 2017-09-12 | 2021-01-26 | 深圳市盛路物联通讯技术有限公司 | Internet of things communication method and first repeater |
| CN112838991B (en) * | 2021-02-09 | 2023-03-24 | 芯河半导体科技(无锡)有限公司 | Method for adaptively adjusting token value of small-bandwidth scheduler |
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|---|---|---|---|---|
| CN1490987A (en) * | 2002-10-18 | 2004-04-21 | ��Ϊ��������˾ | Method for transmitting digital business on synchronous digital network |
| US20040100984A1 (en) * | 2002-11-26 | 2004-05-27 | Nam Hong Soon | Resource allocation method for providing load balancing and fairness for dual ring |
| EP1445895A2 (en) * | 2002-12-12 | 2004-08-11 | Alcatel Canada Inc. | Bandwith management of resilient packet ring network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490987A (en) * | 2002-10-18 | 2004-04-21 | ��Ϊ��������˾ | Method for transmitting digital business on synchronous digital network |
| US20040100984A1 (en) * | 2002-11-26 | 2004-05-27 | Nam Hong Soon | Resource allocation method for providing load balancing and fairness for dual ring |
| EP1445895A2 (en) * | 2002-12-12 | 2004-08-11 | Alcatel Canada Inc. | Bandwith management of resilient packet ring network |
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