CN104468408A - Method for adjusting dynamically service bandwidth and control center server - Google Patents
Method for adjusting dynamically service bandwidth and control center server Download PDFInfo
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Abstract
The invention discloses a method for adjusting dynamically service bandwidth and a control center server. In the method for adjusting dynamically service bandwidth, when a bandwidth adjusting request transmitted by a bandwidth adjusting portal server is received, a current LSP related to user identification, a link set related to the current LSP, and available resource of the link set are queried. Whether the bandwidth adjusting can be completed is judged in accordance with the bandwidth adjustment amount and the available resource of the link set, if the bandwidth adjusting can be completed, bandwidth adjusting configuration information is sent to routers related to the current LSP, respectively, so that the routers perform re-configuration in accordance with corresponding bandwidth adjusting configuration information. When response information transmitted by all re-configured routers is received, VPN link resource status information is updated. The method of the invention improves timeliness and service quality of MPLS VPN bandwidth adjusting by automatically calculating available amount of the VPN service bandwidth and adjusting in real time.
Description
Technical field
The present invention relates to the communications field, particularly a kind of method for dynamic conditioning service bandwidth and control centre's server.
Background technology
MPLS VPN(MPLS Virtual Private Network, multi-protocol tag exchange virtual private network) business employing mpls protocol, in conjunction with the technology such as the grade of service, flow control, for client builds the VPN of enterprise, meet safety between its different cities (international, domestic) branch, fast, communication requirement reliably, and can high-quality, the high reliability multimedia service such as supported data, voice, image.
Do not have the physical link end to end needed for traditional private network between any two nodes of whole VPN, but use the logic on common network platform to connect, customer data transmits in logical links.
At present, MPLS VPN traffic is with website (site) for unit carries out, and each website of client needs to buy bandwidth, and this VPN port bandwidth is monthly changeless.Fig. 1 is MPLS VPN networking schematic diagram in prior art.Wherein CE is customer edge router (Customer EdgeRouter), PE be Provider edge router (Provider Edge Router), P is provider's router (Provider Router).If Pekinese's place in circuit is the Ethernet of 10M, the place in circuit in Shanghai is the SDH(Synchronous Digital Hierarchy of 2M, SDH (Synchronous Digital Hierarchy)).Wherein the 2M allocated bandwidth of a VPN port is: 1M diamond level+1M silver level, the 2M allocated bandwidth of the 2nd VPN port is: 1M diamond level+1M copper level.
In fact the demand of user to VPN bandwidth is constantly change, and if user needs to change bandwidth, from filing an application, last business change completes, need to experience multiple handling process, several days at least time, one month at most, ageing very poor, quality of service cannot be protected.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method for dynamic conditioning service bandwidth and control centre's server.By automatically calculating the available quantity of VPN traffic bandwidth, and adjust in real time, thus improve the ageing and quality of service of MPLS VPN Bandwidth adjustment.
According to an aspect of the present invention, a kind of method for dynamic conditioning service bandwidth is provided, comprises:
When receiving the bandwidth adjustment request that Bandwidth adjustment portal server sends, extract Bandwidth adjustment amount and user ID that bandwidth adjustment request comprises; Wherein Bandwidth adjustment portal server forwards described bandwidth adjustment request when receiving the bandwidth adjustment request that user sends;
According to device label state information and VPN link resource state information, inquire about the available resources of current LSP, the link set be associated with current LSP and the link set be associated with user ID;
According to the available resources of Bandwidth adjustment amount and link set, judge whether to complete Bandwidth adjustment;
Bandwidth adjustment can be completed if judge, then send Bandwidth adjustment configuration information respectively to the router be associated with current LSP, to carry out and corresponding the reconfiguring of Bandwidth adjustment amount according to corresponding Bandwidth adjustment configuration information to the router that current LSP is associated;
When the response message that the whole routers received through reconfiguring send, the configuration result information updating VPN link resource state information utilizing response message value to comprise;
Bandwidth adjustment success response information is sent to Bandwidth adjustment portal server.
Preferably, Bandwidth adjustment can not be completed if judge, then further in MPLS VPN backbone network, judge whether to set up the new LSP be associated with user ID, wherein meet the Bandwidth adjustment requirement corresponding with Bandwidth adjustment amount with the link set that new LSP is associated;
If the new LSP be associated with user ID can be set up, then send corresponding path configurations order respectively to the router that new LSP and current LSP are associated, to delete the configuration of current LSP on the router be associated with current LSP, with the router that new LSP is associated is set up and the corresponding configuration of new LSP;
When the response message that the whole routers received through reconfiguring send, the configuration result information updating device tag state information utilizing response message value to comprise and VPN link resource state information, so that using new LSP as the current LSP be associated with user ID;
Then step Bandwidth adjustment success response information being sent to Bandwidth adjustment portal server is performed.
Preferably, if the new LSP be associated with user ID can not be set up, then Bandwidth adjustment failure response information is sent to Bandwidth adjustment portal server.
Preferably, according to the available resources of Bandwidth adjustment amount and link set, judge whether that the step that can complete Bandwidth adjustment comprises:
Judge in link set, whether there is the link that available resources are less than Bandwidth adjustment amount;
If there is the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment;
If there is not the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment.
Preferably, judge in link set, whether there is the step that available resources are less than the link of Bandwidth adjustment amount and comprise:
Inquire about the service priority be associated with user ID other;
Judge in link set, whether there is adjustment link, wherein in adjustment link, be not more than other available resources total amount of described service priority and be less than Bandwidth adjustment amount;
If there is adjustment link, then judge to complete Bandwidth adjustment;
If there is not adjustment link, then judge to complete Bandwidth adjustment.
According to a further aspect in the invention, a kind of control centre's server for dynamic conditioning service bandwidth is provided, comprise the first receiving element, the first transmitting element, extraction unit, query unit, the first recognition unit, the second transmitting element, the second receiving element and updating block, wherein:
First receiving element, for receiving the bandwidth adjustment request that Bandwidth adjustment portal server sends, wherein Bandwidth adjustment portal server forwards described bandwidth adjustment request when receiving the bandwidth adjustment request that user sends;
Extraction unit, during for receiving bandwidth adjustment request that Bandwidth adjustment portal server sends when the first receiving element, extracts Bandwidth adjustment amount and user ID that bandwidth adjustment request comprises;
Query unit, for according to device label state information and VPN link resource state information, inquires about the available resources of current LSP, the link set be associated with current LSP and the link set be associated with user ID;
First recognition unit, for the available resources according to Bandwidth adjustment amount and link set, judges whether to complete Bandwidth adjustment;
Second transmitting element, for the judged result according to the first recognition unit, Bandwidth adjustment can be completed if judge, then send Bandwidth adjustment configuration information respectively to the router be associated with current LSP, to carry out and corresponding the reconfiguring of Bandwidth adjustment amount according to corresponding Bandwidth adjustment configuration information to the router that current LSP is associated;
Second receiving element, the response message that the whole routers for receiving through reconfiguring send;
Updating block, the response message that the whole routers for receiving when the second receiving element through reconfiguring send, the configuration result information updating VPN link resource state information utilizing response message value to comprise;
First transmitting element, for sending to Bandwidth adjustment portal server by Bandwidth adjustment success response information.
Preferably, control centre's server also comprises the second recognition unit, wherein:
Second recognition unit, for the judged result according to the first recognition unit, Bandwidth adjustment can not be completed if judge, then further in MPLS VPN backbone network, judge whether to set up the new LSP be associated with user ID, wherein meet the Bandwidth adjustment requirement corresponding with Bandwidth adjustment amount with the link set that new LSP is associated;
Second transmitting element is also for the judged result according to the second recognition unit, if the new LSP be associated with user ID can be set up, then send corresponding path configurations order respectively to the router that new LSP and current LSP are associated, to delete the configuration of current LSP on the router be associated with current LSP, with the router that new LSP is associated is set up and the corresponding configuration of new LSP;
Updating block is also for receiving the response message through the whole routers transmissions reconfigured when the second receiving element, the configuration result information updating device tag state information utilizing response message value to comprise and VPN link resource state information, so that using new LSP as the current LSP be associated with user ID; Then the first transmitting element is indicated to perform operation Bandwidth adjustment success response information being sent to Bandwidth adjustment portal server.
Preferably, Bandwidth adjustment failure response information, also for the judged result according to the second recognition unit, if can not set up the new LSP be associated with user ID, is then sent to Bandwidth adjustment portal server by the first transmitting element.
Preferably, whether the first recognition unit also for judging in link set, exists the link that available resources are less than Bandwidth adjustment amount; If there is the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment; If there is not the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment.
Preferably, the first recognition unit also comprises enquiry module and judge module, wherein:
Enquiry module, other for inquiring about the service priority be associated with user ID;
Whether judge module, for judging in link set, exist adjustment link, wherein in adjustment link, is not more than other available resources total amount of described service priority and is less than Bandwidth adjustment amount; If there is adjustment link, then judge to complete Bandwidth adjustment; If there is not adjustment link, then judge to complete Bandwidth adjustment.
The present invention by automatically calculating the available quantity of VPN traffic bandwidth, and adjusts in real time, thus improves the ageing and quality of service of MPLS VPN Bandwidth adjustment.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is MPLS VPN networking schematic diagram in prior art.
Fig. 2 is the schematic diagram of the present invention for a method embodiment of dynamic conditioning service bandwidth.
Fig. 3 is the schematic diagram of the present invention for another embodiment of method of dynamic conditioning service bandwidth.
Fig. 4 is the schematic diagram of a control centre of the present invention server embodiment.
Fig. 5 is the schematic diagram of control centre of the present invention another embodiment of server.
Fig. 6 is the schematic diagram of the present invention first recognition unit embodiment.
Fig. 7 is MPLS VPN networking schematic diagram of the present invention.
Fig. 8 is the functional block diagram of control centre of the present invention server.
Fig. 9 is the schematic flow sheet of dynamic adjusting bandwidth of the present invention.
Figure 10 is the topological schematic diagram of a MPLS VPN embodiment.
Figure 11 is the topological schematic diagram of another embodiment of MPLS VPN.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 2 is the schematic diagram of the present invention for a method embodiment of dynamic conditioning service bandwidth.Preferably, the method step of the present embodiment can be performed by control centre's server.
Step 201, when receiving the bandwidth adjustment request that Bandwidth adjustment portal server sends, extracts Bandwidth adjustment amount and user ID that bandwidth adjustment request comprises.
Wherein Bandwidth adjustment portal server forwards described bandwidth adjustment request when receiving the bandwidth adjustment request that user sends.
Step 202, according to device label state information and VPN link resource state information, inquire about the current LSP(Label Switched Path that is associated with user ID, label switched path), the available resources of the link set that is associated with current LSP and link set.
Step 203, according to the available resources of Bandwidth adjustment amount and link set, judges whether to complete Bandwidth adjustment.
Step 204, Bandwidth adjustment can be completed if judge, then send Bandwidth adjustment configuration information respectively to the router be associated with current LSP, to carry out and corresponding the reconfiguring of Bandwidth adjustment amount according to corresponding Bandwidth adjustment configuration information to the router that current LSP is associated.
Step 205, when the response message that the whole routers received through reconfiguring send, the configuration result information updating VPN link resource state information utilizing response message value to comprise.
Step 206, sends to Bandwidth adjustment portal server by Bandwidth adjustment success response information.
Based on the method for dynamic conditioning service bandwidth that the above embodiment of the present invention provides, by automatically calculating the available quantity of VPN traffic bandwidth, and adjust in real time, thus improve the ageing of MPLSVPN Bandwidth adjustment and quality of service.
Fig. 3 is the schematic diagram of the present invention for another embodiment of method of dynamic conditioning service bandwidth.Preferably, the method step of the present embodiment can be performed by control centre's server.
Step 301, when receiving the bandwidth adjustment request that Bandwidth adjustment portal server sends, extracts Bandwidth adjustment amount and user ID that bandwidth adjustment request comprises.
Step 302, according to device label state information and VPN link resource state information, inquires about the available resources of current LSP, the link set be associated with current LSP and the link set be associated with user ID.
Step 303, according to the available resources of Bandwidth adjustment amount and link set, judges whether to complete Bandwidth adjustment.Can Bandwidth adjustment be completed if judge, then perform step 304; Can not Bandwidth adjustment be completed if judge, then perform step 306.
Step 304, Bandwidth adjustment can be completed if judge, then send Bandwidth adjustment configuration information respectively to the router be associated with current LSP, to carry out and corresponding the reconfiguring of Bandwidth adjustment amount according to corresponding Bandwidth adjustment configuration information to the router that current LSP is associated.
Step 305, when the response message that the whole routers received through reconfiguring send, the configuration result information updating VPN link resource state information utilizing response message value to comprise.Then step 309 is performed.
Step 306, further in MPLS VPN backbone network, judges whether to set up the new LSP be associated with user ID, wherein meets the Bandwidth adjustment requirement corresponding with Bandwidth adjustment amount with the link set that new LSP is associated.If the new LSP be associated with user ID can be set up, then perform step 307; If the new LSP be associated with user ID can not be set up, then perform step 310.
Step 307, corresponding path configurations order is sent respectively to the router that new LSP and current LSP are associated, to delete the configuration of current LSP on the router be associated with current LSP, with the router that new LSP is associated is set up and the corresponding configuration of new LSP.
Step 308, when the response message that the whole routers received through reconfiguring send, the configuration result information updating device tag state information utilizing response message value to comprise and VPN link resource state information, so that using new LSP as the current LSP be associated with user ID.
Step 309, sends to Bandwidth adjustment portal server by Bandwidth adjustment success response information.Afterwards, other step of the present embodiment is no longer performed.
Step 310, sends to Bandwidth adjustment portal server by Bandwidth adjustment failure response information.
Preferably, the above-mentioned available resources according to Bandwidth adjustment amount and link set, judge whether that the step that can complete Bandwidth adjustment comprises:
Judge in link set, whether there is the link that available resources are less than Bandwidth adjustment amount.If there is the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment; If there is not the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment.
Such as, when user asks to increase 30M bandwidth, the link that in current ink set, available bandwidth is minimum is 70M, then can judge to complete Bandwidth adjustment; If the link that in current ink set, available bandwidth is minimum is 15M, then can judge to complete Bandwidth adjustment.Certainly, if user asks to reduce bandwidth, because the bandwidth resources by reclaiming current use can complete, therefore can judge to complete Bandwidth adjustment.
In another embodiment, consider and customer service can be divided into the different business ranks such as diamond level, platinum level, golden level, silver-colored level, copper level.During can being set in link idle, link bandwidth can be used by low priority traffice, and in link busy period, the VPN traffic of high priority can seize the bandwidth of low priority traffice.
Such as active user is silver-colored level, needs to improve bandwidth 60M.Now available in link resource is: diamond level: 80M, silver-colored level: 50M, copper level: 20 grades, and the available resources of silver-colored level+copper level are 70M, then judge to complete Bandwidth adjustment; If user needs to improve bandwidth 100M, now the available resources of silver-colored level+copper level are only 70M, although also have the available bandwidth of 80M, this bandwidth is only for diamond level customer service, therefore this silver-colored level user cannot use this 80M bandwidth, thus can be considered as carrying out Bandwidth adjustment.
Preferably, whether above-mentioned judgement, in link set, exists the step that available resources are less than the link of Bandwidth adjustment amount and comprises:
Inquire about the service priority be associated with user ID other, judge in link set, whether there is adjustment link, wherein in adjustment link, be not more than other available resources total amount of described service priority and be less than Bandwidth adjustment amount.If there is adjustment link, then judge to complete Bandwidth adjustment; If there is not adjustment link, then judge to complete Bandwidth adjustment.
Fig. 4 is the schematic diagram of a control centre of the present invention server embodiment.As shown in Figure 4, control centre's server comprises the first receiving element 401, first transmitting element 402, extraction unit 403, query unit 404, first recognition unit 405, second transmitting element 406, second receiving element 407 and updating block 408, wherein:
First receiving element 401, for receiving the bandwidth adjustment request that Bandwidth adjustment portal server sends, wherein Bandwidth adjustment portal server forwards described bandwidth adjustment request when receiving the bandwidth adjustment request that user sends.
Extraction unit 403, during for receiving bandwidth adjustment request that Bandwidth adjustment portal server sends when the first receiving element 401, extracts Bandwidth adjustment amount and user ID that bandwidth adjustment request comprises.
Query unit 404, for according to device label state information and VPN link resource state information, inquires about the available resources of current LSP, the link set be associated with current LSP and the link set be associated with user ID.
First recognition unit 405, for the available resources according to Bandwidth adjustment amount and link set, judges whether to complete Bandwidth adjustment.
Second transmitting element 406, for the judged result according to the first recognition unit 405, Bandwidth adjustment can be completed if judge, then send Bandwidth adjustment configuration information respectively to the router be associated with current LSP, to carry out and corresponding the reconfiguring of Bandwidth adjustment amount according to corresponding Bandwidth adjustment configuration information to the router that current LSP is associated.
Second receiving element 407, the response message that the whole routers for receiving through reconfiguring send.
Updating block 408, the response message that the whole routers for receiving when the second receiving element 408 through reconfiguring send, the configuration result information updating VPN link resource state information utilizing response message value to comprise;
First transmitting element 402, for sending to Bandwidth adjustment portal server by Bandwidth adjustment success response information.
Based on the method for dynamic conditioning service bandwidth that the above embodiment of the present invention provides, by automatically calculating the available quantity of VPN traffic bandwidth, and adjust in real time, thus improve the ageing of MPLSVPN Bandwidth adjustment and quality of service.
Fig. 5 is the schematic diagram of control centre of the present invention another embodiment of server.Compared with embodiment illustrated in fig. 4, in the embodiment shown in fig. 5, control centre's server also comprises the second recognition unit 501, wherein:
Second recognition unit 501, for the judged result according to the first recognition unit 405, Bandwidth adjustment can not be completed if judge, then further in MPLS VPN backbone network, judge whether to set up the new LSP be associated with user ID, wherein meet the Bandwidth adjustment requirement corresponding with Bandwidth adjustment amount with the link set that new LSP is associated.
Second transmitting element 406 is also for the judged result according to the second recognition unit 501, if the new LSP be associated with user ID can be set up, then send corresponding path configurations order respectively to the router that new LSP and current LSP are associated, to delete the configuration of current LSP on the router be associated with current LSP, with the router that new LSP is associated is set up and the corresponding configuration of new LSP.
Updating block 408 is also for receiving the response message through the whole routers transmissions reconfigured when the second receiving element 407, the configuration result information updating device tag state information utilizing response message value to comprise and VPN link resource state information, so that using new LSP as the current LSP be associated with user ID; Then the first transmitting element 402 is indicated to perform operation Bandwidth adjustment success response information being sent to Bandwidth adjustment portal server.
Preferably, Bandwidth adjustment failure response information, also for the judged result according to the second recognition unit 501, if can not set up the new LSP be associated with user ID, is then sent to Bandwidth adjustment portal server by the first transmitting element 402.
Preferably, whether the first recognition unit 405 also for judging in link set, exists the link that available resources are less than Bandwidth adjustment amount; If there is the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment; If there is not the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment.
Fig. 6 is the schematic diagram of the present invention first recognition unit embodiment.As shown in Figure 6, the first recognition unit also comprises enquiry module 601 and judge module 602.Wherein:
Enquiry module 601, other for inquiring about the service priority be associated with user ID.
Whether judge module 602, for judging in link set, exist adjustment link, wherein in adjustment link, is not more than other available resources total amount of described service priority and is less than Bandwidth adjustment amount; If there is adjustment link, then judge to complete Bandwidth adjustment; If there is not adjustment link, then judge to complete Bandwidth adjustment.
Thus, can judge whether to complete Bandwidth adjustment according to the business-level of user.
Fig. 7 is MPLS VPN networking schematic diagram of the present invention.The core concept of dynamic conditioning service bandwidth of the present invention is based on SDN(Software Defined Network, software definition framework), according to user's request, unified resource management and configuration are carried out to each P, PE equipment in MPLS VPN, can automatically calculate new link when current ink bandwidth resources are not enough, realize the dynamic conditioning of MPLS VPN traffic bandwidth.
Wherein P/PE is as forwarding, the responsible data processing based on MPLS VPN stream table (MPLS Label), forwarding and state collection, and reports respective current ink bandwidth occupancy states; Control centre, as key-course, is responsible for the layout of VPN resource on process P/PE, safeguards VPN link topology and current state, issue Bandwidth adjustment configuration order; Control centre accepts request that VPN Bandwidth adjustment door sends simultaneously and returns request response.
The functional block diagram of control centre's server as shown in Figure 8.Under SDN framework, control centre mainly comprises network operating system (NOS), Bandwidth adjustment APP, resource database (RDB) three functional modules.Topology and the corresponding link bandwidth state information unification of network are kept in RDB; NOS as the nucleus module of control centre, for upper strata APP(is as Bandwidth adjustment APP) platform service is provided, comprise application load and maintenance, messenger service, event registration and callback mechanism, discovering network topology etc.; Bandwidth adjustment APP based on NOS and RDB, can provide Bandwidth adjustment function.
Control centre's south orientation supports Openflow agreement, support to find forwarding face equipment (P/PE), the information that different vendor's forwarding face equipment reports can be accepted, and give corresponding forwarding face equipment by the policy distribution after overall planning, ensure the consistency of policy distribution simultaneously.Support monitoring forwarding face equipment state, and the information that the forwarding face equipment of reading reports.
Control centre's north orientation provides open api interface for VPN Bandwidth adjustment door, and allows user oneself to carry out customizing and secondary development.
Fig. 9 is the schematic flow sheet of dynamic adjusting bandwidth of the present invention.As shown in Figure 9, the flow process of dynamic adjusting bandwidth is as follows:
1, set up secured communication channel between control centre and P/PE, adopt TLS(TransportLayer Security) encryption.
2, VPN Bandwidth adjustment portal server receives the bandwidth adjustment request that user sends, and sends to control centre.
3, control centre is according to current link conditions and resource occupation information, judges whether to realize Bandwidth adjustment on current LSP.
If 4 can realize Bandwidth adjustment, then issue Bandwidth adjustment configuration order to P/PE equipment (configuration parameter comprises: IP_Addr, Port, QoS_Profile, time interval etc.).
If 5 cannot realize Bandwidth adjustment, whether control centre needs calculating can be met the demands by other link circuit resources.
If 6 can meet, then issue and set up new LSP, delete former LSP configuration order to P/PE equipment (configuration parameter comprises: ingress interface, ingress interface lable, egressinterface, egress interface lable etc.).
If 7 cannot meet, then return the response of Bandwidth adjustment failure to VPN Bandwidth adjustment door.
8, P/PE equipment performs configuration operation according to configuration order, and reports execution result to control centre
9, control centre upgrades link circuit resource state according to result.
10, control centre returns the response of Bandwidth adjustment result to VPN Bandwidth adjustment door.
Preferably, in order to realize above-mentioned functions, need to expand OpenFlow agreement, concrete expansion content is as shown in table 1.
| The protocol fields (match field) increased | Field type | Describe |
| ingress interface | char | The incoming interface of MPLS |
| ingress interface lable | int32 | The incoming interface label of MPLS |
| egress interface | char | The outgoing interface of MPLS |
| egress interface lable | int32 | The outgoing interface label of MPLS |
| QoS_Profile | string | Qos configuration template |
| time interval | string | The beginning and ending time that Qos comes into force |
Table 1
Below by specific embodiment, the present invention will be described.
Figure 10 is the topological schematic diagram of a MPLS VPN embodiment.As shown in Figure 10, A client has applied for the MPLS VPN(CE1-CE3 of a 20M), path be PE1/0->PE1/1->P1/0->P1/1->PE2/0->PE2/1(as shown by the solid line in the drawings); B client has applied for the MPLS VPN(CE2-CE4 of a 25M), path be PE1/3->PE1/2->P2/0->P2/2->PE2/3->PE2/2(as shown in phantom in FIG.).
The resource database (RDB) of control centre at least will safeguard 3 list item information (see table 2, table 3 and table 4), wherein table 2 is used for recording the incidence relation of VPN client and router device, table 3 is used for recording state and the annexation of MPLS Label, and table 4 is used for recording equipment and the port of link available bandwidth and association.
Table 2
Table 3
Table 4
Be described for client A below:
1) A client proposes a request, and VPN bandwidth needs to adjust to 50M from original 20M, namely increases 30M.
2) control centre receives the request that A client proposes, and by question blank 2, knows that client A is connected to the interface 0 of PE1 by CE1; And then be PE1/0->PE1/1->P1/0->P1/1->PE2/0->PE2/1 by the path that table 3 finds out LSP.
3) control centre is again by question blank 4, and the link finding out LSP association is link1+link3, and calculating this path maximum available bandwidth is min { link1_bandwidth, link3_bandwidth }=15M, is less than the bandwidth 30M that user applies for increasing.
4) control centre is according to RDB information, by certain protocol algorithm (as CSPF) again for CE1 calculates a new LSP path, such as: PE1/0->PE1/2->P2/0->P2/1->P1/2->P1/1->PE2/0->PE2/1.
5) new configuration parameter (comprising: IP_Addr, Port, QoS_Profile, time interval, label etc.) is handed down to relevant node device (PE1, P1, P2, PE2) by control centre, sets up new LSP and deletes former LSP, as shown in figure 11.
6) control centre's updating form 3 and table 4, obtain table 5 and table 6 respectively, thus complete the dynamic conditioning of A client MPLS VPN bandwidth.
Table 5
Table 6
By implementing the present invention, following beneficial effect can be obtained:
1, can adjust in real time VPN traffic bandwidth and ensure quality of service, thus improve the ageing of VPN Bandwidth adjustment and service-aware, save O&M cost.
2, reduce the use threshold of MPLS VPN traffic, enhance the confidence that user uses large bandwidth, can effectively pull MPLS VPN number of users and health service revenue.
3, this patent has applicability comparatively widely, has both been applicable to MPLS VPN application scenarios, is also applicable to the telecommunication service application scenarios that other have Bandwidth adjustment demand.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
Claims (10)
1. for a method for dynamic conditioning service bandwidth, it is characterized in that, comprising:
When receiving the bandwidth adjustment request that Bandwidth adjustment portal server sends, extract Bandwidth adjustment amount and user ID that bandwidth adjustment request comprises; Wherein Bandwidth adjustment portal server forwards described bandwidth adjustment request when receiving the bandwidth adjustment request that user sends;
According to device label state information and VPN link resource state information, inquire about the available resources of current LSP, the link set be associated with current LSP and the link set be associated with user ID;
According to the available resources of Bandwidth adjustment amount and link set, judge whether to complete Bandwidth adjustment;
Bandwidth adjustment can be completed if judge, then send Bandwidth adjustment configuration information respectively to the router be associated with current LSP, to carry out and corresponding the reconfiguring of Bandwidth adjustment amount according to corresponding Bandwidth adjustment configuration information to the router that current LSP is associated;
When the response message that the whole routers received through reconfiguring send, the configuration result information updating VPN link resource state information utilizing response message value to comprise;
Bandwidth adjustment success response information is sent to Bandwidth adjustment portal server.
2. method according to claim 1, is characterized in that,
Can not Bandwidth adjustment be completed if judge, then further in MPLS VPN backbone network, judge whether to set up the new LSP be associated with user ID, wherein meet the Bandwidth adjustment requirement corresponding with Bandwidth adjustment amount with the link set that new LSP is associated;
If the new LSP be associated with user ID can be set up, then send corresponding path configurations order respectively to the router that new LSP and current LSP are associated, to delete the configuration of current LSP on the router be associated with current LSP, with the router that new LSP is associated is set up and the corresponding configuration of new LSP;
When the response message that the whole routers received through reconfiguring send, the configuration result information updating device tag state information utilizing response message value to comprise and VPN link resource state information, so that using new LSP as the current LSP be associated with user ID;
Then step Bandwidth adjustment success response information being sent to Bandwidth adjustment portal server is performed.
3. method according to claim 2, is characterized in that,
If the new LSP be associated with user ID can not be set up, then Bandwidth adjustment failure response information is sent to Bandwidth adjustment portal server.
4. the method according to any one of claim 1-3, is characterized in that,
According to the available resources of Bandwidth adjustment amount and link set, judge whether that the step that can complete Bandwidth adjustment comprises:
Judge in link set, whether there is the link that available resources are less than Bandwidth adjustment amount;
If there is the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment;
If there is not the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment.
5. method according to claim 4, is characterized in that,
Judge in link set, whether there is the step that available resources are less than the link of Bandwidth adjustment amount and comprise:
Inquire about the service priority be associated with user ID other;
Judge in link set, whether there is adjustment link, wherein in adjustment link, be not more than other available resources total amount of described service priority and be less than Bandwidth adjustment amount;
If there is adjustment link, then judge to complete Bandwidth adjustment;
If there is not adjustment link, then judge to complete Bandwidth adjustment.
6. the control centre's server for dynamic conditioning service bandwidth, it is characterized in that, comprise the first receiving element, the first transmitting element, extraction unit, query unit, the first recognition unit, the second transmitting element, the second receiving element and updating block, wherein:
First receiving element, for receiving the bandwidth adjustment request that Bandwidth adjustment portal server sends, wherein Bandwidth adjustment portal server forwards described bandwidth adjustment request when receiving the bandwidth adjustment request that user sends;
Extraction unit, during for receiving bandwidth adjustment request that Bandwidth adjustment portal server sends when the first receiving element, extracts Bandwidth adjustment amount and user ID that bandwidth adjustment request comprises;
Query unit, for according to device label state information and VPN link resource state information, inquires about the available resources of current LSP, the link set be associated with current LSP and the link set be associated with user ID;
First recognition unit, for the available resources according to Bandwidth adjustment amount and link set, judges whether to complete Bandwidth adjustment;
Second transmitting element, for the judged result according to the first recognition unit, Bandwidth adjustment can be completed if judge, then send Bandwidth adjustment configuration information respectively to the router be associated with current LSP, to carry out and corresponding the reconfiguring of Bandwidth adjustment amount according to corresponding Bandwidth adjustment configuration information to the router that current LSP is associated;
Second receiving element, the response message that the whole routers for receiving through reconfiguring send;
Updating block, the response message that the whole routers for receiving when the second receiving element through reconfiguring send, the configuration result information updating VPN link resource state information utilizing response message value to comprise;
First transmitting element, for sending to Bandwidth adjustment portal server by Bandwidth adjustment success response information.
7. control centre according to claim 6 server, is characterized in that, described control centre server also comprises the second recognition unit, wherein:
Second recognition unit, for the judged result according to the first recognition unit, Bandwidth adjustment can not be completed if judge, then further in MPLS VPN backbone network, judge whether to set up the new LSP be associated with user ID, wherein meet the Bandwidth adjustment requirement corresponding with Bandwidth adjustment amount with the link set that new LSP is associated;
Second transmitting element is also for the judged result according to the second recognition unit, if the new LSP be associated with user ID can be set up, then send corresponding path configurations order respectively to the router that new LSP and current LSP are associated, to delete the configuration of current LSP on the router be associated with current LSP, with the router that new LSP is associated is set up and the corresponding configuration of new LSP;
Updating block is also for receiving the response message through the whole routers transmissions reconfigured when the second receiving element, the configuration result information updating device tag state information utilizing response message value to comprise and VPN link resource state information, so that using new LSP as the current LSP be associated with user ID; Then the first transmitting element is indicated to perform operation Bandwidth adjustment success response information being sent to Bandwidth adjustment portal server.
8. control centre according to claim 7 server, is characterized in that,
Bandwidth adjustment failure response information, also for the judged result according to the second recognition unit, if can not set up the new LSP be associated with user ID, is then sent to Bandwidth adjustment portal server by the first transmitting element.
9. the control centre's server according to any one of claim 6-8, is characterized in that,
Whether the first recognition unit also for judging in link set, exists the link that available resources are less than Bandwidth adjustment amount; If there is the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment; If there is not the link that available resources are less than Bandwidth adjustment amount, then judge to complete Bandwidth adjustment.
10. control centre according to claim 9 server, is characterized in that, the first recognition unit also comprises enquiry module and judge module, wherein:
Enquiry module, other for inquiring about the service priority be associated with user ID;
Whether judge module, for judging in link set, exist adjustment link, wherein in adjustment link, is not more than other available resources total amount of described service priority and is less than Bandwidth adjustment amount; If there is adjustment link, then judge to complete Bandwidth adjustment; If there is not adjustment link, then judge to complete Bandwidth adjustment.
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