CN102271048A - Method and device for protecting services of aggregated link - Google Patents
Method and device for protecting services of aggregated link Download PDFInfo
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- CN102271048A CN102271048A CN2010101964241A CN201010196424A CN102271048A CN 102271048 A CN102271048 A CN 102271048A CN 2010101964241 A CN2010101964241 A CN 2010101964241A CN 201010196424 A CN201010196424 A CN 201010196424A CN 102271048 A CN102271048 A CN 102271048A
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Abstract
The invention discloses a method and device for protecting services of an aggregated link, wherein the method for protecting the service of the aggregated link comprises the steps of: detecting that the services transmitted by a working bandwidth of a first member link in the aggregated link break down; judging that the prearranged bandwidth of the services of the second member link in the aggregated link is effective; and continuing to transmit the services by using the prearranged bandwidth of the second member link. Through the method and device for protecting the services of the aggregated link, flexible switching of the services transmitted on the aggregated link is realized, and the service quality of transmitting the services is ensured.
Description
Technical field
The present invention relates to the communications field, service protecting method and device in a kind of aggregated links.
Background technology
Along with the growth of data business volume with to the raising of quality of service requirement, in packet network, MPLS (Multi-Protocol Label Switching multiprotocol label switching), MPLS-TP (MPLS Transport Profile have been adopted at present, Packet Transport Network), PBB (Provider Backbone Bridge, the operator backbone bridge joint), technology such as VLAN (Virtual LocalArea Network, VLAN) exchange realizes traffic engineering.Before transmitting user data, formulate SLA (Service-Level Agreement according to customer requirements, service level agreement), by the pre-configured forwarding of data of control protocol path, distribute bandwidth resources, formation has the service flow that service quality such as bandwidth guarantees, and (link failure when network resource status changes, network resource utilization etc.), further adjust the forward-path of service flow, thereby satisfy user's QoS (service quality) requirement, so (Traffic Engineering, TE) technology in the application of carrier network more and more widely at present for traffic engineering.High bandwidth, high availability become the packet network most important characteristic day by day.Link aggregation is an important technology that satisfies network high availability and high bandwidth.
Link aggregation technology (having regulation to describe at IEEE 802.3ad) is that several physical links with two equipment rooms are combined into a link (being called an aggregated links) in logic, this link logically is an integral body, at miscellaneous equipment is a link, has shielded the details of inner composition and transmission data.
For protecting professional according to the different stage of service flow effectively, correlation technique is on the logical links that is made of a plurality of physics Member Links (being aggregated links), according to COS, different service flow is mapped on the different Member Links, and according to COS be service flow share out the work bandwidth resources and the protection bandwidth resources; Aggregated links comprises at least one active link and at least one backup link, the service flow of active link carrying high priority, the service flow of backup link carrying low priority; When the active link fault, the service flow of high priority is switched to backup link from faulty link transmit.Priority height by service flow and reserved resource realization are to effective protection of service flow; but; this technology limits link attribute and use; when fault; can only switch to link by faulty link with active link attribute with backup link attribute; lack other switching modes,, can not make full use of the aggregated links bandwidth so the switching flexibility is not enough.
Summary of the invention
Main purpose of the present invention is to provide service protecting method and the device in a kind of aggregated links, switches with the business that solves correlation technique to lack flexibility, can not make full use of the problem of aggregated links bandwidth.
According to an aspect of the present invention, provide the service protecting method in a kind of aggregated links, having comprised: the business that detects the bandwidth of operation transmission of first Member Link in the aggregated links breaks down; The bandwidth reserved of the described business of second Member Link in the judgement aggregated links is effective; Use the bandwidth reserved of second Member Link to continue the described business of transmission.
According to a further aspect in the invention, provide the device of the service protection in a kind of aggregated links, having comprised: first judge module, the bandwidth of operation transport service that is used for detecting first Member Link of aggregated links breaks down; Second judge module is used for judging that the bandwidth reserved of described business of second Member Link of aggregated links is effective; Protection module is used to use the bandwidth reserved of second Member Link to continue the described business of transmission.
Service protection function service-oriented (service flow) in the aggregated links of the present invention; by the mode that gives mutual protection between the Member Link that adopts aggregated links; effectively utilized the idle bandwidth of each Member Link in the aggregated links; solved when the active link of aggregated links breaks down in the correlation technique; can't switch flexibly; and can not make full use of the problem of aggregated links bandwidth, realize the flexible switching of the business transmitted on the aggregated links, guarantee the service quality of transport service.
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 of steps according to the service protecting method in a kind of aggregated links of the embodiment of the invention;
Fig. 2 is another flow chart of steps according to the service protecting method in a kind of aggregated links of the embodiment of the invention;
Fig. 3 is a schematic diagram of reserving resource conservation according to first kind of aggregated links of the embodiment of the invention;
Fig. 4 is a schematic diagram of reserving resource conservation according to second kind of aggregated links of the embodiment of the invention;
Fig. 5 is a schematic diagram of reserving resource conservation according to the third aggregated links of the embodiment of the invention;
Fig. 6 is according to a kind of aggregated links bearer service of the embodiment of the invention and reserves the schematic diagram of resource conservation;
Fig. 7 is the schematic diagram of the laggard industry affair of a kind of Member Link fault of aggregated links shown in Figure 6 protection;
Fig. 8 is the schematic diagram of the laggard industry affair of the Member Link fault of another kind of aggregated links shown in Figure 6 protection;
Fig. 9 is the flow chart of steps according to the service protecting method in the another kind of aggregated links of the embodiment of the invention;
Figure 10 is the structured flowchart according to the service protection device in a kind of aggregated links of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
The present invention refers to business with service flow, represents with SFlow/SFlows.Corresponding to different SLA (Service LEVEL Agreement, SLA), the protected mode of service flow and method require different, and be directly perceived for narrating, and with the height of priority definition service flow for the protection requirement, and represents with quantitative value among the present invention.
Need to prove, in the following description:
Linka represents the sign of an aggregated links, and Linka-b represents the sign of the Member Link of aggregated links Linka;
Linka-b (T-BW, F-BW) T-BW in represents the maximum reservable bandwidth information (i.e. the maximum bandwidth reserved ability of this Member Link) of a Member Link, F-BW represents the idle bandwidth of reserving (being the current actual idle bandwidth that has) of this link.
MaxLspBW among the Linka (MaxLspBW) represents maximum LSP (the Label Switched Path of the not reservation of aggregated links Linka, label switched path) bandwidth (being in all Member Links of aggregated links Linka, maximum residual idle bandwidth that can continuous bearing).For avoiding that incorrect order takes place in the data packet delivery, the embodiment of the invention all is transmitted as example not allow SFlow can stride a plurality of Member Links simultaneously, so MaxLspBW should be the maximum in all Member Link residue idle bandwidths.
(wherein: CIR represents guaranteed bandwidth to SFlow for CIR, link) some key feature value informations of a SFlow of expression; Link represents SFlow through the Member Link of aggregated links sign, if when distributing Member Link to SFlow, this value is for empty.
Following examples of the present invention all are transmitted as the example explanation not allow a SFlow to stride a plurality of Member Links simultaneously.
With reference to Fig. 1, show flow chart of steps according to the service protecting method of a kind of aggregated links of the embodiment of the invention, may further comprise the steps:
Step S102: the business that detects the bandwidth of operation transmission of first Member Link in the aggregated links breaks down;
Wherein, bandwidth of operation is 10M for the transmission bandwidth that the business of transmitting on this Member Link takies as the first Member Link bandwidth summation, business of transmission on this Member Link, and this business takies the 4M bandwidth, then this 4M bandwidth bandwidth of operation that is first Member Link.And for example, the first Member Link bandwidth summation is 10M, two business of transmission on this Member Link, and these two business take the 6M bandwidth altogether, then this 6M bandwidth bandwidth of operation that is first Member Link.
In this step, the business that is detected the bandwidth of operation transmission of first Member Link in the aggregated links by packet node breaks down.
Step S104: the bandwidth reserved of the described business of second Member Link in the judgement aggregated links is effective;
For example, Packet Switching Node has been reserved bandwidth resources to the business on the fault Member Link in advance on other Member Link, at this moment, can judge whether the bandwidth resources of reservation are effective, does not promptly have to lose efficacy or taken by other business.
If the business on the fault Member Link does not have bandwidth reserved on other Member Link, at this moment, Packet Switching Node can be judged the residue idle bandwidth that whether has the business transmission that can satisfy on the fault Member Link in the aggregated links in the normal Member Link.
Step S106: use the bandwidth reserved of second Member Link to continue transport service.
For example: Packet Switching Node uses the business on this bandwidth reserved continuation transmission fault Member Link under the effective situation of the bandwidth reserved of second Member Link.
In the correlation technique, link attribute and use to Member Link in the aggregated links limit, when Member Link breaks down, can only switch to link by faulty link with active link attribute with backup link attribute, thereby the switching underaction, and can not make full use of the bandwidth of aggregated links.Pass through present embodiment, each Member Link of aggregated links backups each other, and any one Member Link breaks down, and can all have the Member Link of idle bandwidth to switch to other, effectively utilize the idle bandwidth of each Member Link, improved the switching flexibility.
With reference to Fig. 2, show another flow chart of steps according to the service protecting method in a kind of aggregated links of the embodiment of the invention, may further comprise the steps:
Step S202: at a SFlow during through an aggregated links; Member Link of Information Selection such as bandwidth according to SFlow is reserved the bandwidth of operation resource; and priority reserved for it in the residue Member Link greater than the SFlows of the value of setting protect bandwidth resources, do not need bandwidth reserved for priority less than the SFlows of the value of setting.
By priority is set, ensured that the high important service of priority preferentially is protected when running into fault on aggregated links.
When reserving resource conservation, can be defined as its Member Link that protection is provided in advance and reserve the protection bandwidth.For the SFlows that carries on the different members link, can the share protect bandwidth reserved, also can be each SFlows independence bandwidth reserved, cannot the share protect bandwidth reserved for the SFlows on the same Member Link.
Further, the forwarding-table item of link receiving terminal configuration is not specified the concrete Member Link position of a service flow in aggregated links, and the packet of a service flow that receives from any Member Link of aggregated links is all transmitted by the corresponding forwarding item of configuration.As the inbound port sign of the receiving terminal that the link receiving terminal is set in transmitting be corresponding to whole aggregated links, and like this, the link receiving terminal uses this inbound port sign can receive the business of each Member Link transmission of aggregated links.The purpose of doing like this is in order to protect in fault when switching, and only needs to revise in link transmitting terminal transmit, and receiving terminal need not revised and transmit, and simplifies configuration and implements, and can reduce protection switch time.
Step S204: when member's link failure, the bandwidth of reservation also lost efficacy, and perhaps bandwidth reserved not judges whether that effective residue idle bandwidth transmits the business of transmitting on the fault Member Link this moment;
Step S206: have effectively residue idle bandwidth resource in the residue Member Link of aggregated links, the service flow SFlows that needs protection to the carrying of fault Member Link, according to priority these SFlows being transferred to residue transmits on the Member Link, reconfigure the corresponding data forwarding table of service flow at transmitting terminal, make the service flow that is subjected to fault effects obtain fast quick-recovery and transmit;
Preferably, the SFlows that priority is the highest transfers on the residue Member Link and transmits, to guarantee the transmission of high-priority service on aggregated links.
For a SFlow, if reserved the protection bandwidth resources in advance, and its protection link do not lose efficacy, and then switched to it on protection link of reserving the protection bandwidth resources, as figure one illustrated embodiment from faulty link; If this SFlow does not reserve the protection bandwidth resources or the protection link also lost efficacy, then need from that Member Link application resource conservation that also has the residue idle bandwidth of not losing efficacy as yet, and finish and switch.If the residue idle bandwidth in all Member Links that do not lose efficacy is all not enough, then from the reservation resource conservation of other lower priority, seize.The guarantee of maximum possible is provided for the transmission of the business on the aggregated links like this.
Further, above-mentioned protection is switched and can be carried out in the following manner:
(1) packet node detects the service flow originating party when fault, carry out at once and switch, and notice is switched in transmission to the opposite end, and the opposite end is according to unidirectional switching/dual-ended switching configuration, and whether decision is carried out equally for this SFlow is switched;
(2) packet node detects the service flow debit when fault, send signalling trouble to the opposite end at once, whether carry out at the originating party of this SFlow of local terminal and switch according to unidirectional switching/dual-ended switching configuration decision, if, then switch, and switch messages appended in the signalling trouble, realize quick protective switch;
(3) packet node is received the signalling trouble of opposite end, starts at once and switches.
Protecting when switching, packet node can adopt to be supported many service priority mode and not to support many service priority mode.When not supporting many service priority, protect when switching, according to the amount of bandwidth ordering, when bandwidth was the same, fair play was through the SFlows of aggregated links; When supporting the SFlows service priority; when needing protection faulty link carrying SFlows; if the free time can utilize bandwidth not enough at present; then should be preferably SFlows protection is provided, can seize the protection bandwidth resources that untapped low service priority SFlows reserves during inadequate resource with high service priority.
The switchover mode of packet node can be taked one of following dual mode:
Unidirectional switching after a direction of link detects fault, only starts this link transmitting terminal and switches;
Dual-ended switching, when link after sending direction detects fault, start this link and make a start and switch, and switch the sending direction of opposite end equally the announcement opposite end; Dual-ended switching makes the sending and receiving passage strict conformance of two-way SFlows.
If above-mentioned measure failure then needs to start announcement, jump to step S210.
Step S208: after member's link failure disappeared, this link can be used again." whether returning " attribute according to SFlows determines it to turn back to current link from the protection link, for irrevocable SFlows, does not process.
After the Member Link fault disappeared, the original business of transmission on this Member Link had alleviated protection link transmission burden again, has reduced the transmission risk of whole aggregated links.
Step S210: the residue idle bandwidth of residue Member Link is not enough to support the protection of SFlows, the protection failure, and the control module with announcement SFlows correspondence makes it take further step for SFlows, for example heavy-route, end-to-end switch etc.
Below, at first the aggregated links of the embodiment of the invention is reserved resource conservation and be explained according to Fig. 3 to Fig. 5.
With reference to Fig. 3, show the schematic diagram of reserving resource conservation according to first kind of aggregated links of the embodiment of the invention.The aggregated links of present embodiment is reserved resource conservation and is adopted the privacy protection reservation mode, promptly reserves special-purpose resource conservation for each work SFlows.
As shown in Figure 3, aggregated links Link2 comprises four Member Link Link2-1, Link2-2, Link2-3 and Link2-4.Packet Switching Node A receives three service flow SFlow1, SFlow2 and SFlow3.At this moment, Packet Switching Node A or tension management plane are the idle bandwidth of a Member Link of each service flow distribution, and as the reservation resource conservation of this service flow special use, this reservation resource conservation is specific to a service flow, can not be used by other service flow.As Packet Switching Node A or tension management plane is that SFlow1 distributes idle bandwidth on Link2-2, as the reservation resource conservation of SFlow1; For SFlow2 distributes idle bandwidth on Link2-3, as the reservation resource conservation of SFlow2; For SFlow3 distributes idle bandwidth on Link2-4, as the reservation resource conservation of SFlow3.
With reference to Fig. 4, show the schematic diagram of reserving resource conservation according to second kind of aggregated links of the embodiment of the invention.The aggregated links of present embodiment is reserved resource conservation and is adopted the share protect reservation mode; promptly for a plurality of different members links; for one on each Member Link wherein work SFlows reserves resource conservation, this reservations resource conservation is that a plurality of work SFlows of a plurality of different members links are shared.
As shown in Figure 4, aggregated links Link2 comprises four Member Link Link2-1, Link2-2, Link2-3 and Link2-4.Packet Switching Node A receives three service flow SFlow1, SFlow2 and SFlow3.At this moment; Packet Switching Node A or tension management plane are that SFlow1, SFlow2 and SFlow3 distribute idle bandwidth on Member Link Link2-2; as the shared reservation resource conservation of SFlow1, SFlow2 and SFlow3, this reservation resource conservation is used jointly by SFlow1, SFlow2 and SFlow3.
With reference to Fig. 5, show the schematic diagram of reserving resource conservation according to the third aggregated links of the embodiment of the invention.The aggregated links of present embodiment is reserved resource conservation and is adopted the hybrid protection reservation mode; promptly for a plurality of different members links; for the work SFlows on certain or some Member Link wherein reserves the privacy protection resource, and be that work SFlows on other Member Links reserves the share protect resource.The hybrid protection reservation mode is avoided the risk concentrations by the restriction degree of share, then reserves other resource conservation for SFlows afterwards when share count surpasses set point.
In the present embodiment, the higher limit of quantity that the work SFlows of share protect resource is set must not surpass 2, sets SFlow1 and SFlow2 share protect resource, but SFlow3 can not share again, needs the independent allocation resource conservation.
As shown in Figure 5, aggregated links Link2 comprises four Member Link Link2-1, Link2-2, Link2-3 and Link2-4.Packet Switching Node A receives three service flow SFlow1, SFlow2 and SFlow3.At this moment, Packet Switching Node A or tension management plane are that SFlow1 and SFlow2 distribute shared idle bandwidth on Member Link Link2-2, and as the shared reservation resource conservation of SFlow1 and SFlow2, this reservation resource conservation is used jointly by SFlow1 and SFlow2.Simultaneously, Packet Switching Node A or tension management plane are that SFlow3 distributes special-purpose idle bandwidth on Member Link Link2-3, reserve resource conservation as the special use of SFlow3, and this is reserved resource conservation and is only used by SFlow3.
The foregoing description resource conservation reservation policy all adopts reserves resource conservation to all SFlows through aggregated links; but the present invention is not limited to this kind strategy; can also adopt the SFlows that priority is greater than or equal to the value of setting (as user configured set point) to reserve resource conservation, and the SFlows that priority is lower than the value of setting not reserved the mode of resource conservation.
With reference to Fig. 6, show according to a kind of aggregated links bearer service of the embodiment of the invention and reserve the schematic diagram of resource conservation.
In the present embodiment, an aggregated links Link2 is arranged between Packet Switching Node A and the Packet Switching Node B, this aggregated links is made up of 3 physics Member Link Link2-1, Link2-2, Link2-3.Suppose that in the present embodiment the present main state information of aggregated links is made of following two class values:
Link2-1(20M，5M)、Link2-2(20M，10M)、Link2-3(20M，20M)；
Link2(20M)。
Wherein for other node in the network as seen Link2 and supposes that wherein Link2-1 has carried part SFlows, and has reserved the protection bandwidth resources and give these SFlows in Link2-2.
Earlier in network, set up SFlow1 (its guaranteed bandwidth CIR is 4M) by distributed RSVP-TE signaling, calculate SFlow1 through route and need pass through Link2, set up in the process of SFlow1 in employing distributed signaling mode, when signaling reaches the aggregated links end points, according to shown in Figure 6, select Link2-3, step is as follows:
Step S602:SFlow1 sets up signaling and reaches node A, according to the routing iinformation that this signaling is carried, determines that SFlow1 need pass through link Link2.
Step S604: according to the bandwidth information of SFlow1, need to select a Member Link, reserve necessary protection bandwidth resources for it simultaneously as its bearing link; For the equilibrium burden, need to select the bearing link of Link2-3, and provide protection for SFlow1 in Link2-2 Member Link reservation 4M resource as SFlow1.
After distributing member's link for SFlow1, the main state information of aggregated links is made of following two class values:
Link2-1(20M，5M)、Link2-2(20M，10M)、Link2-3(20M，16M)；
Llnk2(16M)。
The LSPs that can be through the different members link owing to resource conservation shares, and be that SFlow1 shares so Link2-2 goes up the protection bandwidth resources of the SFlows reservation of upward carrying for Link2-1, but therefore bandwidth reserved can not reduce.
Step S606: through the RSVP-TE Signalling exchange, determine that SFlow1 goes into label and outgoing label through all of A, Z, A, Z node are set up the corresponding data forwarding list item of LSP.Forwarding-table item as shown in Figure 6.Wherein, A represents the start node of SFlow1, and Z represents the destination node of SFlow1.
Wherein need to prove about this step: forwarding-table item shown in Figure 6 does not retrain receipts label 2 must be related with certain concrete physical link, as in Node B, inlet label 2 does not have the Link2-3 association, this means that any any Member Link from Link2 receives that label value is 2 Bao Douhui and forwards from the physical port of Link3.The purpose of doing like this is in order to protect when switching, and only at the modification forwarding-table item of making a start, the receiving terminal forwarding-table item is constant, thereby need not consult the protection Member Link by signaling at both link ends, simplifies configuration and implements, and further also can reduce protection switch time.
With reference to Fig. 7, show a kind of schematic diagram of the laggard industry affair of Member Link fault protection of aggregated links shown in Figure 6.May further comprise the steps:
Step S702: at node A, receive Member Link Link2-3 fault notification (such as the remote alarm indication of receiving Link2-3 from the Link2-2 port), determine that this faulty link carries SFlow1 at present, changes step S704 over to.If faulty link does not carry SFlows, then finish.
Step S704: at node A, it is effective to judge that Link2-2 goes up the protection bandwidth resources of reserving for SFlow1, SFlow1 is switched to Link2-2 transmit, and revises SFlow1 transmitting that A is ordered, and the relation will transmitted is switched to Link-2 from Link2-3, as shown in Figure 7.Switch finish after announcement B node switches information.
In Node B, still by the normal treatment S Flow1 data flow that receives of original data forwarding table configuration.If be configured to dual-ended switching, according to the switch messages that the A end sends the reverse data stream forwarding list of SFlow1 is revised, be switched to Link-2 from Link-3, as shown in Figure 7.
Finish the protection switch after, the free time of current Link2 can utilize bandwidth to become 10M continuously.
With reference to Fig. 8, show the schematic diagram of the laggard industry affair of the Member Link fault protection of another kind of aggregated links shown in Figure 6.Present embodiment be behind the link failure in the reversed process high priority SFlow seize the resource conservation processing procedure of low priority.
Among the SFlows of present embodiment setting aggregated links carrying the SFlow1 of a higher priority and the SFlow2 of a lower priority are arranged, and Member Link Link2-1 upward there is not other idle bandwidth except that the resource conservation of reserving.
It is as follows to set the main state information of aggregated links:
Link2-1(20M，3M)、Link2-2(20M，2M)、Link2-3(20M，2M)；
The CIR of SFlow1 is 4M, and the CIR of SFlow2 is 5M.
If Member Link breaks down, cause the resource conservation of reservation to lose efficacy, the step of implementing the aggregated links protection is as follows:
Step S802: at node A, receive the fault notification of Member Link Link2-2, Link2-3, determine that this fault causes SFlow1, SFlow2 to lose efficacy, because SFlow1 priority is higher, priority treatment changes step S804 over to.
Step S804: the reservation resource conservation of finding SFlow1 in the processing procedure was also lost efficacy, then the idling-resource of other Member Link of searching is protected.At present have only Link2-1 not lose efficacy in the Member Link, remaining bandwidth is 3M in Link2-1, is not enough to protect SFlow1 (CIR=4M), and the reservation resource conservation of therefore seizing SFlow2 is protected and switched.Switch successfully treatment S Flow2, change step S806 over to.
The reservation resource conservation of step S806:SFlow2 is seized, and can not find enough bandwidth and protect in the Member Link that do not lose efficacy, and initiates heavy-route (waiting recovery measure) and recovers service.
Fig. 9 is according to the flow chart of steps of the service protecting method in the another kind of aggregated links of the embodiment of the invention, may further comprise the steps:
Step S902: Packet Switching Node detects aggregated link failures;
Step S904: Packet Switching Node is searched the fault Member Link;
Step S906: judge whether to exist the SFolws that influenced by the fault Member Link, if, then change step S908, if not, then change step S924;
Step S908: judge whether affected SFolws has reserved the protection bandwidth, if, change step S910, if not, then change step S914;
Step S910: whether the protection bandwidth that judgement is reserved lost efficacy or is occupied, if, then change step S912, if not, then change step S916;
Step S912: judge whether the Member Link that do not lose efficacy has idle bandwidth that protection can be provided, if, change step S914, if not, then change step S920;
Step S914: select suitable Member Link as protection according to requirements such as bandwidth, execution in step S916;
Step S916: the protection link according to appointment is switched, and issues again and transmits, execution in step S918;
Step S918: carry switch messages announcement opposite end and switch execution in step S924;
Step S920: judge whether to get the protection bandwidth that low priority SFolws reserves, if, execution in step S916, if not, execution in step S922;
Step S922: to the control module report aggregated links protection failure of SFolws, execution in step S924;
Step S924: end process.
With reference to Figure 10, show structured flowchart according to the service protection device 100 in a kind of aggregated links of the embodiment of the invention, comprising:
First judge module 1002, the bandwidth of operation transport service that is used for detecting first Member Link of aggregated links breaks down; Second judge module 1004 is used for judging that the bandwidth reserved of described business of second Member Link of aggregated links is effective; Protection module 1006 is used to use the bandwidth reserved of second Member Link to continue transport service.
Preferably, the service protection device of this aggregated links can also comprise: the 3rd judge module 1008, be used for when creating business, and judge that the priority of the business of first Member Link transmission is greater than or equal to setting priority; Reserve module 1010, be used to business bandwidth reserved on second Member Link.
Technical scheme of the present invention may be used on as any particular technology scopes such as MPLS, MPLS-TP, VLAN exchanges.As can be seen from the above description, the present invention has realized in aggregated links efficiently, the protection of flexible services stream, makes full use of the remaining bandwidth in the aggregated links, farthest protects the QoS characteristic requirements such as bandwidth of service flow.
Obviously, those skilled in the art should be understood 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, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, 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.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the service protecting method in the aggregated links is characterized in that, comprising:
The business that detects the bandwidth of operation transmission of first Member Link in the described aggregated links breaks down;
The bandwidth reserved of described business of judging second Member Link in the described aggregated links is effective;
Use the bandwidth reserved of described second Member Link to continue the described business of transmission.
2. method according to claim 1 is characterized in that, also comprises:
When creating business, judge that the priority of the business of described first Member Link transmission is greater than or equal to setting priority;
Be described service selection second Member Link and bandwidth reserved.
3. according to method according to claim 2, it is characterized in that, for the step of described service selection second Member Link and bandwidth reserved comprises:
In the idle bandwidth of second Member Link in described aggregated links, be the described professional bandwidth reserved that transmits on described first Member Link;
Perhaps,
In other professional bandwidth reserved of second Member Link in described aggregated links, be the described professional shared bandwidth of reserving.
4. method according to claim 2 is characterized in that, also comprises:
When creating business, judge that the priority of the business of described first Member Link transmission is lower than setting priority;
It is not described professional bandwidth reserved.
5. method according to claim 4 is characterized in that, also comprises:
The described business that detects the not bandwidth reserved of first Member Link transmission in the described aggregated links breaks down;
Judge that described second Member Link satisfies the residue idle bandwidth of the service bandwidth demand of described not bandwidth reserved in addition;
Use the described residue idle bandwidth of described second Member Link to continue the described business of transmission.
6. method according to claim 1 is characterized in that, also comprises:
Judge the described second Member Link fault;
Judge that other Member Link satisfies the residue idle bandwidth of the bandwidth demand of described transport service in addition;
Use the described residue idle bandwidth of described other Member Link to continue the described business of transmission.
7. method according to claim 1 is characterized in that, also comprises:
Judge the described second Member Link fault;
Judge that other Member Link is normal, and do not satisfy the residue idle bandwidth of the bandwidth demand of described transport service;
Seize other professional bandwidth reserved of described other Member Link, continue the described business of transmission.
8. method according to claim 1 is characterized in that, uses the step of the described business of bandwidth reserved continuation transmission of described second Member Link to comprise:
Outbound port sign that should business during the transmitting terminal of described business is transmitted its transmitting terminal is revised as the port-mark corresponding to described second Member Link;
Use the Member Link of the port of export of described port of export sign indication to transmit described business to the receiving terminal of described transport service.
9. method according to claim 8 is characterized in that, also comprises:
When creating business, the receiving terminal that the receiving terminal of described business is set is transmitted,
Inbound port sign during described receiving terminal is transmitted indicates described receiving terminal to use described inbound port sign to receive the business of each Member Link transmission of described aggregated links corresponding to described aggregated links.
10. method according to claim 1 is characterized in that, the business of transmitting on described first Member Link comprises a plurality of, uses the step of the described business of bandwidth reserved continuation transmission of described second Member Link to comprise:
Use the high described business of bandwidth reserved prioritised transmission priority of described second Member Link.
11. method according to claim 1 is characterized in that, also comprises:
Judge that described first Member Link recovers normal;
Judge whether returning to be designated as and being of described business;
Described business recovery is transmitted to described first Member Link.
12. the service protection device in the aggregated links is characterized in that, comprising:
First judge module, the bandwidth of operation transport service that is used for detecting first Member Link of described aggregated links breaks down;
Second judge module is used for judging that the bandwidth reserved of described business of second Member Link of described aggregated links is effective;
Protection module is used to use the bandwidth reserved of described second Member Link to continue the described business of transmission.
13. device according to claim 12 is characterized in that, also comprises:
The 3rd judge module is used for when creating business, judges that the priority of the business of described first Member Link transmission is greater than or equal to setting priority;
Reserve module, be used to described business bandwidth reserved on described second Member Link.
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