CN102480411A - Reservation method and system for protected bandwidth resources - Google Patents
Reservation method and system for protected bandwidth resources Download PDFInfo
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- CN102480411A CN102480411A CN2010105572691A CN201010557269A CN102480411A CN 102480411 A CN102480411 A CN 102480411A CN 2010105572691 A CN2010105572691 A CN 2010105572691A CN 201010557269 A CN201010557269 A CN 201010557269A CN 102480411 A CN102480411 A CN 102480411A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
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- H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
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Abstract
The invention discloses a reservation method for protected bandwidth resources, which includes choosing a link member for bearing a service flow to be set up according to bandwidth using information of link members of a link aggregation and the bandwidth information of the service flow borne on the link aggregation, and reserving protected bandwidth resources for the service flow to be set up. The invention further provides a reservation system for protected bandwidth resources. According to the technical scheme, reservation of protected bandwidth resources in the link aggregation is flexibly realized.
Description
Technical field
The present invention relates to the packet network field, relate in particular to a kind of method for obligating and system that protects bandwidth resources.
Background technology
Along with the growth of data business volume with to service quality (QoS; Quality of Service) raising that requires; In packet network, multiprotocol label switching (MPLS, Multi-protocol LabelSwitch), operator backbone bridging technology (PBB have been adopted at present; Provider Backbone Bridge), based on the multiprotocol label switching (MPLS-TP that transmits the plane; Transport Profile for MPLS), technology such as VLAN (VLAN, Virtual Local Area Network) exchange realize traffic engineering (TE, TrafficEngineering).Before transmitting user data, formulate service level agreement (SLA, Service Level Agreement) according to user's requirement; Through the pre-configured forwarding of data of control protocol path; Distribute bandwidth resources, form the service flow that QoS such as having bandwidth guarantees, and when network resource status changes; Link failure or network resource utilization for example occurring changes etc.; The further forward-path of adjustment service flow, thus satisfy user's qos requirement, so the TE technology is in the application of carrier network more and more widely at present.High bandwidth, high availability become the packet network most important characteristic day by day, and the link aggregation technology is to satisfy an important technology of network high bandwidth and high availability.
The link aggregation technology; Be meant that several physical links with two equipment rooms are combined into a link in logic; This link is called an aggregated links, logically is an integral body, is a link for miscellaneous equipment; Shielded the details of inner composition and transmission data, the description of regulation has specifically been arranged in IEEE 802.3ad agreement.
Obviously, the link aggregation technology can reach the purpose of simplifying network topology; And; Polymerization internal physical link can be accomplished data transmit-receive task and backup each other jointly; As long as also there is the Member Link of ability operate as normal; Data flow on the faulty link can switch to the Member Link of other operate as normal, and whole aggregated links just can not lose efficacy, thereby reaches the professional purpose of protection in aggregated links inside.
In order can effectively to protect business according to the different stage of service flow; Number of patent application is EP1921808; Denomination of invention is that Preemptive transmis sion protection scheme for dataservices discloses a kind of method: on the aggregated links that is made up of a plurality of Member Links; According to type of service, different service is mapped on the different Member Links, and is traffic assignments bandwidth of operation resource and protects bandwidth resources according to type of service; Comprise at least one active link and at least one backup link in the aggregated links, active link carries the business of high priority, and backup link carries the business of low priority; When the active link fault, can the business of high priority be switched to backup link from faulty link and transmit.The technical scheme of this patent application can be through service flow the priority height with reserved resource in advance service flow is realized effectively protection; But shortcoming is this scheme not to be described the preset mode of the protection bandwidth resources of aggregated links, do not provide yet the aggregated links that how to flood bandwidth resources information, adopt which kind of strategy to reserve the related realization scheme of protection bandwidth resources.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method for obligating and system that protects bandwidth resources, has realized the reservation of protection bandwidth resources in the aggregated links flexibly.
For achieving the above object, technical scheme of the present invention is achieved in that
The present invention provides a kind of method for obligating of protecting bandwidth resources, comprising:
Use the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links according to the bandwidth of the Member Link of aggregated links, select to carry the Member Link of service flow yet to be built, and be that service flow yet to be built is reserved and protected bandwidth resources.
In the said method, this method further comprises:
When being service flow yet to be built when reserving the failure of protection bandwidth resources,, and be that service flow yet to be built is reserved and protected bandwidth resources again for the service flow that has existed is reselected bearing link;
When being service flow yet to be built when reserving the success of protection bandwidth resources, recomputate the bandwidth of aggregated links.
In the said method, the bandwidth of said Member Link according to aggregated links is used the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links, selects to carry before the Member Link of service flow yet to be built, and this method further comprises:
The protection type of configuration aggregated links is a share protect, and the protection type of the aggregated links that in network, floods.
In the said method, the protection type of said configuration aggregated links is a share protect, and the protection type of the aggregated links that in network, floods is:
The protection type of configuration aggregated links is a share protect on webmaster, and floods in the protection type of network internal to said aggregated links; The fixing percentage of reserving as the bandwidth of protection bandwidth resources of the Member Link of said aggregated links is set on webmaster.
In the said method, the bandwidth of said Member Link according to aggregated links is used the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links, and the Member Link of selecting to carry service flow yet to be built is:
When the end points of aggregated links is confirmed self of service flow process yet to be built; The end points of said aggregated links calculates the bandwidth of every Member Link of this aggregated links and uses information; And, in many Member Links of aggregated links, select the bearing link of a Member Link as said service flow yet to be built according to the bandwidth information of the service flow yet to be built of carrying on the said aggregated links and the bandwidth use information of said Member Link.
In the said method, the said reservation for service flow yet to be built protects bandwidth resources to be:
Another Member Link in the selective polymerization link is as the protection link of service flow yet to be built, and is that service flow yet to be built is reserved the protection bandwidth resources on said protection link.
In the said method, said is that the service flow that has existed is reselected bearing link, and reserves for service flow yet to be built again and protect bandwidth resources to be:
The end points of aggregated links is initiated the load balancing adjustment, selects bearing link for the service flow that has existed again, reserves the protection bandwidth resources for service flow yet to be built again after selecting to finish, if this reserves the success of protection bandwidth resources, then process ends; Bandwidth resources are unsuccessful if this reserves protection, then stop to reserve the protection bandwidth resources for service flow yet to be built, continue the configuration of service flow yet to be built.
In the said method, the said bandwidth that recomputates aggregated links is:
The end points of aggregated links uses information according to the bandwidth of the Member Link of aggregated links, recomputates and the maximum of the aggregated links that floods can be reserved the LSP bandwidth.
The present invention also provides a kind of reservation system that protects bandwidth resources, comprising: the end points of aggregated links; Wherein,
The end points of aggregated links is used for using according to the bandwidth of the Member Link of aggregated links the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links, selects to carry the Member Link of service flow yet to be built, and be that service flow yet to be built is reserved and protected bandwidth resources.
In the said system,
This system also comprises: configuration module, and the protection type that is used to dispose aggregated links is a share protect, and the protection type of the aggregated links that in network, floods;
The end points of said aggregated links also is used for, and when being service flow yet to be built when reserving the failure of protection bandwidth resources, for the service flow that has existed is reselected bearing link, and be that service flow yet to be built is reserved and protected bandwidth resources again; Or, when being service flow yet to be built when reserving the success of protection bandwidth resources, recomputate the bandwidth of aggregated links.
The method for obligating of protection bandwidth resources provided by the invention and system; Go up the bandwidth information of the service flow yet to be built of carrying according to the protection type of aggregated links and its; Select to carry the Member Link of service flow yet to be built, and be that service flow yet to be built is reserved the protection bandwidth resources, can realize the reservation of the protection bandwidth resources of aggregated links in the packet network flexibly; And made full use of the remaining bandwidth of aggregated links, farthest protect the requirement of the QoS characteristics such as bandwidth of service flow.
Description of drawings
Fig. 1 is the realization flow sketch map of the present invention's method for obligating of protecting bandwidth resources;
Fig. 2 is the sketch map that aggregated links of the present invention is carried service flow;
Fig. 3 is the realization principle schematic of the embodiment one of the present invention's method for obligating of protecting bandwidth resources;
Fig. 4 is the realization flow sketch map of the embodiment one of the present invention's method for obligating of protecting bandwidth resources;
Fig. 5 is the realization principle schematic of the embodiment two of the present invention's method for obligating of protecting bandwidth resources;
Fig. 6 is the realization flow sketch map of the embodiment two of the present invention's method for obligating of protecting bandwidth resources;
Fig. 7 is the realization principle schematic of the embodiment three of the present invention's method for obligating of protecting bandwidth resources;
Fig. 8 is the realization flow sketch map of the embodiment three of the present invention's method for obligating of protecting bandwidth resources;
Fig. 9 is the implementation structure sketch map that the present invention protects the reservation system of bandwidth resources.
Embodiment
Basic thought of the present invention is: the bandwidth information of using the service flow yet to be built of carrying on information and the said aggregated links according to the bandwidth of the Member Link of aggregated links; Select to carry the Member Link of service flow yet to be built, and be that service flow yet to be built is reserved the protection bandwidth resources.
Through accompanying drawing and specific embodiment the present invention is done further detailed description more below.
The present invention is the method that the protection bandwidth resources of aggregated links are reserved, and the trigger condition of using this method can be signaling request, network management configuration request etc.The sign of the service flow among the present invention can be label switched path (LSP, Label Switch Path), VLAN, medium access control (MAC, MediaAccessControl), the corresponding various service flow of sign such as VLAN+MAC.
In the present invention service flow is with " SFlow " expression, when more than one of service flow number, with " Sflows " expression.In addition, for avoiding in the user data package transmission incorrect order taking place, each LSP among the present invention can not stride a plurality of Member Links simultaneously and transmit, and like this, does not reserve maximum LSP bandwidth and should be the not maximum in the bandwidth reserved of all Member Links.
Fig. 1 is the realization flow sketch map of the present invention's method for obligating of protecting bandwidth resources, and as shown in Figure 1, this method may further comprise the steps:
Step 101 is used the bandwidth information of the service flow yet to be built of carrying on information and this aggregated links according to the bandwidth of the Member Link of aggregated links, selects to carry the Member Link of service flow yet to be built;
Concrete, the end points of aggregated links receive webmaster set up signaling after, according to the routing iinformation that signaling is carried, confirm the aggregated links at self place of SFlow process yet to be built; When SFlow yet to be built passed through this aggregated links, the end points of aggregated links calculated the bandwidth of every Member Link of this aggregated links and uses information, and this bandwidth use information refers to the size of the available bandwidth of Member Link; After calculating completion; The link management module of the end points of aggregated links is used information according to the bandwidth of the Member Link of the bandwidth information of the SFlow yet to be built that carries on it and aggregated links, in many Member Links of aggregated links, selects the bearing link of this SFlow yet to be built of Member Link conduct.
Step 102 is for service flow yet to be built is reserved the protection bandwidth resources;
Concrete, after selecting bearing link, be the protection link of another Member Link in the first selective polymerization link, and be that SFlow yet to be built reserves the protection bandwidth resources on this protection link as SFlow yet to be built for SFlow yet to be built; If reserve the failure of protection bandwidth resources, execution in step 103 is if reserve the success of protection bandwidth resources, execution in step 104.
Step 103 for the service flow that has existed is reselected bearing link, and is that service flow yet to be built is reserved the protection bandwidth resources again, finishes current handling process;
Concrete; When being SFlow yet to be built when reserving the failure of protection bandwidth resources, the link management module of the end points of aggregated links can be initiated a load balancing adjustment, and the SFlow that has existed is adjusted in the Member Link of aggregated links; Again select bearing link for the SFlow that has existed; After finishing, selection, protects bandwidth resources success, then process ends if this is reserved again for SFlow yet to be built reserves the protection bandwidth resources; If it is still unsuccessful that this reserves the protection bandwidth resources, then stop to continue the configuration of SFlow yet to be built for SFlow yet to be built reserves the protection bandwidth resources;
Here, the configuration that continues SFlow yet to be built belongs to prior art, repeats no more here; For the SFlow yet to be built that reserves the failure of protection bandwidth resources; Show that aggregated links can't provide the protection bandwidth resources for it; If after this carrying the Member Link of this SFlow yet to be built breaks down; Can solve through modes such as heavy-routes, belong to prior art, repeat no more here about solution.
Step 104 recomputates the bandwidth of aggregated links;
Concrete; When being that SFlow yet to be built is when reserving the success of protection bandwidth resources; The link management module of the end points of aggregated links is used information according to the bandwidth of the Member Link of aggregated links, recomputate the maximum of aggregated links and can reserve the LSP bandwidth, and the maximum of calculating that floods can be reserved the LSP bandwidth.
Said method is that the sight that is directed against is: the protection type of the aggregated links that need in network, not flood, and directly the end points by aggregated links is that SFlow yet to be built selects Member Link and reserves the protection bandwidth resources; Therefore no matter aggregated links is the protection type of unprotect or share protect in this method, can both reserve the protection bandwidth resources for SFlow yet to be built.Simultaneously, it is the method for obligating of protection bandwidth resources of the aggregated links of share protect to the protection type that the present invention also provides a kind of, and this method only need increase following content before step 101, and other steps are with step 101 to step 104;
Before step 101, increase step: the protection type of configuration aggregated links is a share protect, and the protection type of the aggregated links that in network, floods;
Concrete, on webmaster, can dispose the protection type of aggregated links, the protection type comprises share protect and unprotect; After the protection type configuration of aggregated links finished, control plane flooded in the protection type of network internal to this aggregated links;
If the protection type of aggregated links is a share protect; The fixing percentage of reserving as the bandwidth of protection bandwidth resources of the Member Link of this aggregated links then also need be set on webmaster; This percentage is greater than 0 and less than 100%; When the protection type to this aggregated links flooded, the bandwidth that floods also need deduct the percentage of the bandwidth of above-mentioned reservation simultaneously; If the protection type of aggregated links is a unprotect, need not be SFlow bandwidth reserved yet to be built here, the bandwidth that floods is not for reserving maximum LSP bandwidth.
Implementation method when the protection type that the method that comprises this step is based on aggregated links is share protect; Have only when aggregated links is the protection type of share protect; Can protect bandwidth resources for SFlow yet to be built reserves, so the protection type of aggregated links is set to share protect in this step.
In the embodiment of the invention, with the sign of Linka as an aggregated links, Linka-b is as the sign of the Member Link of aggregated links Linka; Linka-b (BW1, but the BW1 BW2) representes this physical link utilized bandwidth, but BW2 representes the utilized bandwidth of also not reserving of this physical link, also claims not bandwidth reserved; MaxLspBW among the Linka (MaxLspBW) representes the not reservation maximum bandwidth of aggregated links Linka.For avoiding in the user data package transmission incorrect order taking place, each LSP in the embodiment of the invention can not stride a plurality of Member Links simultaneously and transmit, and MaxLspBW should be the not maximums in the bandwidth reserved of all Member Links like this; If the guaranteed bandwidth of LSP is BW0, then when BW0≤MaxLspBW, this LSP could pass through this aggregated links; Aggregated links Linka also has other parameter that can describe bandwidth, and for example: the bandwidth that maximum link bandwidth can be used, maximum reservable bandwidth, bandwidth reserved is not bandwidth reserved sum etc. not on each Member Link; In the embodiment of the invention, some key feature value informations of a LSP of LSP (CIR) expression, CIR representes the guaranteed bandwidth of LSP.
Fig. 2 is the sketch map that aggregated links of the present invention is carried service flow, and is as shown in Figure 2, and an aggregated links Link1 is arranged between node A and Node B, and this aggregated links is by 3 physics Member Link Link1-1, Link1-2, Link1-3 and one-tenth.
Embodiment one
Fig. 3 is the realization principle schematic of the embodiment one of the present invention's method for obligating of protecting bandwidth resources, and as shown in Figure 3, the bandwidth information of the Member Link of aggregated links is following in the present embodiment:
Link1-1(50M，50M)，Link1-2(50M，50M)，Link1-3(50M，50M)。
As shown in Figure 3; Initiate to set up the SFlow1 (its CIR is 10M) of share protect on the webmaster; Final SFlow1 is through aggregated links Link1, and Link1 selects link1-1 as the Member Link that carries SFlow1, and reserve for SFlow1 on the link1-2 protect bandwidth resources after its bandwidth of inundation again.
Fig. 4 is the realization flow sketch map of the embodiment one of the present invention's method for obligating of protecting bandwidth resources, and is as shown in Figure 4, may further comprise the steps:
Step 401, the protection type of configuration aggregated links Link1;
Concrete, the protection type of configuration aggregated links Link1 is a share protect on webmaster, and specifies and fixingly reserve that to make the wide percentage of boundary belt be 40%.
Step 402, the bandwidth of calculating aggregated links Link1;
Concrete, after configuration was accomplished, the node A of Link1 was according to this information configured, and the bandwidth that calculates the aggregated links that needs inundation is max{50M, 50M, 50M}* (1-40%)=30M; The bandwidth of the protection type (share protect) of node A inundation Link1 and the aggregated links that calculates, i.e. bandwidth reserved (30M) not.
Step 403, the Member Link of SFlow1 is carried in selection, is that SFlow1 reserves the protection bandwidth resources;
Concrete, node A receives and sets up signaling, according to the routing iinformation that this signaling is carried, confirms that SFlow1 need pass through aggregated links Link1; Node A is according to the bandwidth information of LSP1 and the protection type of aggregated links Link1; Select Member Link Link1-1 as the Member Link that carries SFlow1; Select protection link and the reservation protection bandwidth resources of Link1-2, and reserve the success of protection bandwidth resources as SFlow1; This moment, the bandwidth information of Member Link was changed to:
Link1-1(50M，40M)，Link1-2(50M，40M)，Link1-3(50M，50M)。
Step 404 recomputates the bandwidth of aggregated links Link1;
Concrete, the bandwidth that node A recomputates aggregated links Link1 is max{40M, 40M, 50M}* (1-40%)=30M; And node A protects bandwidth (30M) to flood to the protection type of Link1 with reserving through Routing Protocol.
Embodiment two
Fig. 5 is the realization principle schematic of the embodiment two of the present invention's method for obligating of protecting bandwidth resources; As shown in Figure 5; In the present embodiment; The protection type is the aggregated links Link1 bearing part SFlows of share protect, specifies on the webmaster that fixing to reserve the percentage of making the wide resource of boundary belt be 20%; The bandwidth information of the Member Link of aggregated links is following:
Link1-1(50M，18M)，Link1-2(50M，15M)，Link1-3(50M，25M)，Link1(20M)。
Wherein, the CIR of the SFlow2 that Link1-1 carries is 2M, on Link1-2, has reserved the protection bandwidth resources for SFlow2.
As shown in Figure 5; Set up the SFlow3 (its CIR is 20M) of share protect on the webmaster; Final SFlow3 is through aggregated links link1; Link1 selects link1-3 as the Member Link that carries SFlow3, and after through adjustment, successfully selects the reservation protection bandwidth resources of link1-1 as SFlow3, and its bandwidth of inundation again.
Fig. 6 is the realization flow sketch map of the embodiment two of the present invention's method for obligating of protecting bandwidth resources, and is as shown in Figure 6, may further comprise the steps:
Step 601, the bandwidth of calculating aggregated links Link1;
Concrete, aggregated links Link1 is 20M through the bandwidth that route protocol flooding goes out self.
Step 602, the Member Link of SFlow3 is carried in selection, is that SFlow3 reserves the protection bandwidth resources;
Concrete, node A receives and sets up signaling, according to the routing iinformation that this signaling is carried, confirms that SFlow3 need pass through aggregated links Link1; Node A is according to the bandwidth information of LSP3 and the protection type of aggregated links Link1; Select Member Link Link1-3 as the Member Link that carries SFlow3; And when reserving the protection bandwidth resources for SFlow3, fail, promptly can't find the protection link of suitable Member Link as SFlow3.
Step 603 is carried out the load balancing adjustment of Member Link;
Concrete; The link management module of node A is initiated the load balancing adjustment of Member Link; The SFlows that has existed is adjusted in the Member Link of link1, and adjustment back SFlow2 carries on link1-3, on Link1-2, reserves the protection bandwidth resources for SFlow2; The bandwidth information of adjustment back aggregated links is:
Link1-1(50M，20M)，Link1-2(50-M，15M)，Link1-3(50M，3M)。
Step 604 is reserved the protection bandwidth resources for SFlow3 again;
Concrete, it is that SFlow3 reserves the protection bandwidth resources that node A selects Member Link Link1-1, and reserves the success of protection bandwidth resources; This moment, the bandwidth information of Member Link was changed to:
Link1-1(50M，0M)，Link1-2(50M，15M)，Link1-3(50M，3M)。
Step 605 recomputates the bandwidth of aggregated links Link1;
Concrete, the bandwidth that node A recomputates aggregated links Link1 is max{0M, 15M, and 3M}* (1-20%)=12M, and node A protects bandwidth (30M) to flood to the protection type of Link1 with reserving through Routing Protocol again.
Embodiment three:
Fig. 7 is the realization principle schematic of the embodiment three of the present invention's method for obligating of protecting bandwidth resources, and as shown in Figure 7, in the present embodiment, aggregated links Link1 is bearing part Sflows, and the bandwidth information of the Member Link of aggregated links is following:
Link1-1(50M，5M)，Link1-2(50M，1M)，Link1-3(50M，2M)。
As shown in Figure 7, initiate to set up SFlow4 (its CIR is 5M) on the webmaster, final SFlow4 is through aggregated links Link1, and Link1 selects Link1-1 to carry SFlow4, through once still reserving the protection bandwidth resources for SFlow4 after the adjustment.
Fig. 8 is the realization flow sketch map of the embodiment three of the present invention's method for obligating of protecting bandwidth resources, and is as shown in Figure 8, may further comprise the steps:
Step 801, the protection type of configuration aggregated links Link1;
Concrete, the protection type of configuration aggregated links Link1 is a unprotect on webmaster.
Step 802, the bandwidth of calculating aggregated links Link1;
Concrete, after configuration was accomplished, the node A of Link1 flooded with reservation protection bandwidth (5M) through the protection type of Routing Protocol to Link1.
Step 803, the Member Link of SFlow4 is carried in selection, is that SFlow4 reserves the protection bandwidth resources;
Concrete, node A receives and sets up signaling, according to the routing iinformation that this signaling is carried, confirms that SFlow4 need pass through aggregated links Link1; Node A is according to the bandwidth information of LSP4 and the protection type of aggregated links Link1; Select Member Link Link1-1 as the Member Link that carries SFlow4; And when reserving the protection bandwidth resources for SFlow4, fail, promptly can't find the protection link of suitable Member Link as SFlow4.
Step 804 is carried out the load balancing adjustment of Member Link, and reserves the protection bandwidth resources for SFlow4 again;
Concrete, the link management module of node A is initiated the load balancing adjustment of Member Link, and the SFlows that has existed is adjusted in the Member Link of link1; And attempt again to SFlow4 reserves the protection bandwidth resources, still can't then stop to attempt after dull the putting in order successfully for SFlow4 reserves the resource conservation bandwidth, continue the layoutprocedure of SFlow.
Step 805 recomputates the bandwidth of aggregated links Link1;
Concrete, the bandwidth that node A recomputates aggregated links Link1 is max{0M, 1M, and 2M}=2M, and node A protects bandwidth (30M) to flood to the protection type of Link1 with reserving through Routing Protocol again.
For realizing said method, the present invention also provides a kind of reservation system that protects bandwidth resources, and Fig. 9 is the implementation structure sketch map that the present invention protects the reservation system of bandwidth resources, and is as shown in Figure 9, and this system comprises: the end points 91 of aggregated links; Wherein,
The end points 91 of aggregated links is used for using according to the bandwidth of the Member Link of aggregated links the bandwidth information of the service flow yet to be built of carrying on information and this aggregated links, selects to carry the Member Link of service flow yet to be built, and be that service flow yet to be built is reserved and protected bandwidth resources.
This system also comprises: configuration module 92, and the protection type that is used to dispose aggregated links is a share protect, and the protection type of the aggregated links that in network, floods;
The end points 91 of said aggregated links also is used for; When being that service flow yet to be built is when reserving the failure of protection bandwidth resources; For the service flow that has existed is reselected bearing link, and be that service flow yet to be built is reserved the protection bandwidth resources again, or; When being service flow yet to be built when reserving the success of protection bandwidth resources, recomputate the bandwidth of aggregated links.
The protection type of said configuration aggregated links is a share protect; And the protection type of the aggregated links that in network, floods is: the protection type of configuration aggregated links is a share protect on webmaster, and floods in the protection type of network internal to said aggregated links; The fixing percentage of reserving as the bandwidth of protection bandwidth resources of the Member Link of said aggregated links is set on webmaster.
The bandwidth of said Member Link according to aggregated links is used the bandwidth information of the service flow yet to be built of carrying on information and this aggregated links; The Member Link that select to carry service flow yet to be built is: when the end points 91 of aggregated links is confirmed self of service flow processes yet to be built; The end points 91 of this aggregated links calculates the bandwidth of every Member Link of this aggregated links and uses information; And, in many Member Links of aggregated links, select the bearing link of a Member Link as this service flow yet to be built according to the bandwidth information of the service flow yet to be built of carrying on this aggregated links and the bandwidth use information of said Member Link.
Saidly reserve the protection bandwidth resources for service flow yet to be built and be: another Member Link in the selective polymerization link is as the protection link of service flow yet to be built, and be that service flow yet to be built is reserved and protected bandwidth resources on this protection link.
Said is that the service flow that has existed is reselected bearing link; And reserve for service flow yet to be built again and protect bandwidth resources to be: the end points 91 of aggregated links is initiated the load balancing adjustment; Again select bearing link for the service flow that has existed; After finishing, selection reserves the protection bandwidth resources for service flow yet to be built again, if this reserves the success of protection bandwidth resources, then process ends; Bandwidth resources are unsuccessful if this reserves protection, then stop to reserve the protection bandwidth resources for service flow yet to be built, continue the configuration of service flow yet to be built.
The said bandwidth that recomputates aggregated links is: the end points 91 of aggregated links uses information according to the bandwidth of the Member Link of aggregated links, recomputates and the maximum of the aggregated links that floods can be reserved the LSP bandwidth.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method for obligating of protecting bandwidth resources is characterized in that, this method comprises:
Use the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links according to the bandwidth of the Member Link of aggregated links, select to carry the Member Link of service flow yet to be built, and be that service flow yet to be built is reserved and protected bandwidth resources.
2. method according to claim 1 is characterized in that, this method further comprises:
When being service flow yet to be built when reserving the failure of protection bandwidth resources,, and be that service flow yet to be built is reserved and protected bandwidth resources again for the service flow that has existed is reselected bearing link;
When being service flow yet to be built when reserving the success of protection bandwidth resources, recomputate the bandwidth of aggregated links.
3. method according to claim 1; It is characterized in that; The bandwidth of said Member Link according to aggregated links is used the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links, selects to carry before the Member Link of service flow yet to be built, and this method further comprises:
The protection type of configuration aggregated links is a share protect, and the protection type of the aggregated links that in network, floods.
4. method according to claim 3 is characterized in that, the protection type of said configuration aggregated links is a share protect, and the protection type of the aggregated links that in network, floods is:
The protection type of configuration aggregated links is a share protect on webmaster, and floods in the protection type of network internal to said aggregated links; The fixing percentage of reserving as the bandwidth of protection bandwidth resources of the Member Link of said aggregated links is set on webmaster.
5. method according to claim 1 is characterized in that, the bandwidth of said Member Link according to aggregated links is used the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links, and the Member Link of selecting to carry service flow yet to be built is:
When the end points of aggregated links is confirmed self of service flow process yet to be built; The end points of said aggregated links calculates the bandwidth of every Member Link of this aggregated links and uses information; And, in many Member Links of aggregated links, select the bearing link of a Member Link as said service flow yet to be built according to the bandwidth information of the service flow yet to be built of carrying on the said aggregated links and the bandwidth use information of said Member Link.
6. method according to claim 1 is characterized in that, the said reservation for service flow yet to be built protects bandwidth resources to be:
Another Member Link in the selective polymerization link is as the protection link of service flow yet to be built, and is that service flow yet to be built is reserved the protection bandwidth resources on said protection link.
7. according to claim 2 or 6 described methods, it is characterized in that said is that the service flow that has existed is reselected bearing link, and reserve for service flow yet to be built again and protect bandwidth resources to be:
The end points of aggregated links is initiated the load balancing adjustment, selects bearing link for the service flow that has existed again, reserves the protection bandwidth resources for service flow yet to be built again after selecting to finish, if this reserves the success of protection bandwidth resources, then process ends; Bandwidth resources are unsuccessful if this reserves protection, then stop to reserve the protection bandwidth resources for service flow yet to be built, continue the configuration of service flow yet to be built.
8. according to claim 2 or 6 described methods, it is characterized in that the said bandwidth that recomputates aggregated links is:
The end points of aggregated links uses information according to the bandwidth of the Member Link of aggregated links, recomputates and the maximum of the aggregated links that floods can be reserved the LSP bandwidth.
9. a reservation system that protects bandwidth resources is characterized in that this system comprises: the end points of aggregated links; Wherein,
The end points of aggregated links is used for using according to the bandwidth of the Member Link of aggregated links the bandwidth information of the service flow yet to be built of carrying on information and the said aggregated links, selects to carry the Member Link of service flow yet to be built, and be that service flow yet to be built is reserved and protected bandwidth resources.
10. system according to claim 9 is characterized in that,
This system also comprises: configuration module, and the protection type that is used to dispose aggregated links is a share protect, and the protection type of the aggregated links that in network, floods;
The end points of said aggregated links also is used for, and when being service flow yet to be built when reserving the failure of protection bandwidth resources, for the service flow that has existed is reselected bearing link, and be that service flow yet to be built is reserved and protected bandwidth resources again; Or, when being service flow yet to be built when reserving the success of protection bandwidth resources, recomputate the bandwidth of aggregated links.
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| CN2010105572691A CN102480411A (en) | 2010-11-23 | 2010-11-23 | Reservation method and system for protected bandwidth resources |
| PCT/CN2011/078657 WO2012068911A1 (en) | 2010-11-23 | 2011-08-19 | Reservation method and system for protected bandwidth resource |
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