CN102130762A - Method, device and system for synchronizing service information by using path computation element (PCE) - Google Patents
Method, device and system for synchronizing service information by using path computation element (PCE) Download PDFInfo
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- CN102130762A CN102130762A CN2010105609978A CN201010560997A CN102130762A CN 102130762 A CN102130762 A CN 102130762A CN 2010105609978 A CN2010105609978 A CN 2010105609978A CN 201010560997 A CN201010560997 A CN 201010560997A CN 102130762 A CN102130762 A CN 102130762A
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Abstract
The invention discloses a method and device for synchronizing service information by using a path computation element (PCE). The method comprises the following steps: receiving a service catalog message from a synchronous initiator by the PCE; acquiring a local service catalog message by the PCE; comparing the service catalog message with the local service catalog message by the PCE to determine services which are contained in the service catalog message and not contained in the local service catalog message; sending a service request message to the synchronous initiator by the PCE; receiving a service notification message from the synchronous initiator by the PCE, wherein the service notification message comprises specific information of requested services; updating locally stored service information in accordance with the service notification message, and updating identification information of all locally stored services; and sending a service confirmation message to the synchronous initiator by the PCE. By using the method and device, the quick synchronization of the service information can be realized.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of path-calculating element business information method for synchronous, device and system.
Background technology
In order to improve the flexibility of service fulfillment, in traditional optical transport network, introduce control plane, introduce optical transport network behind the control plane and be called as " ASON (Automatic Switch OpticalNetwork, ASON) ".Control plane provides a whole set of control protocol, comprises signaling protocol, Routing Protocol, LMP Link Manager Protocol etc.By LMP Link Manager Protocol, can obtain the far-end configuration automatically, and carry out consistency desired result between adjacent node, the link that verification is passed through can adopt Routing Protocol to be published to the whole network.In this way, each node can be collected the topology information of the whole network.When needs were opened a paths, the first node in path adopted certain algorithm according to the topology information of the whole network, calculates routing information, and uses signaling protocol to set up the path according to the routing information that calculates.
When network size was big, because the restriction of node processing ability, it was more painstaking to calculate.Can use a path-calculating element this moment, and (Path Computation Element PCE) is responsible for path computing specially.Wherein PCE can be implemented on the high performance server, also can be implemented in a performance preferably on the node.When needs are opened a paths, the first node in path is as path calculating client (PathComputation Client, PCC), utilize path computation element protocol (Path Computation ElementProtocol, PCEP) path computing request (Path Computation Request, PCReq) message request PCE calculating path; PCE calculates routing information, and utilize path computing response (PathComputation Respond, PCRep) message returns to PCC; PCC sets up the path according to the routing information that returns.
If PCE has the information of the business of whole network, then can utilize the relation between the business, improve utilization rate of network resource, improve professional survival ability, make the path that calculates more optimize.But, how to get access to up-to-date business information rapidly and take less bandwidth resources to become very important owing to loaded service on network topology and the network all may change at any time.
Summary of the invention
The embodiment of the invention provides a kind of business information method for synchronous, device and system, can finish the synchronous fast of business information.
A kind of path-calculating element PCE business information method for synchronous comprises:
Described PCE receives the operation list message of motor synchronizing originating end, and described operation list message comprises the identification information of the business that synchronous originating end is preserved;
Described PCE obtains the local service directory information, and described local service directory information comprises local all the professional identification informations preserved of described PCE;
More described operation list message of described PCE and described local service catalogue message confirm that described operation list message has, and the business that does not have in the described local service directory information;
Described PCE sends business request information to synchronous originating end, described business request information comprises the identification information of the business of request, the business of described request has the business that does not have in the described local service directory information for described operation list message, if all business of the described operation list message that comprises in the described local service directory information, the then number zero setting of the business of described request;
Described PCE receives the business circular message of motor synchronizing originating end, and described professional circular message comprises the specifying information of the business of described request, according to the local business information of preserving of described professional circular information updating;
Described PCE sends professional acknowledge message to synchronous originating end.
A kind of path-calculating element PCE business information synchronizer comprises:
Operation list message sink unit is used to receive the operation list message of motor synchronizing originating end, described operation list message to comprise the identification information of the business that synchronous originating end is preserved;
Local service directory information acquiring unit is used to obtain the local service directory information, and described local service directory information comprises local all the professional identification informations preserved of described PCE;
Comparing unit is used for more described operation list message and described local service catalogue message, confirms that described operation list message has, and the business that does not have in the described local service directory information;
The business request information transmitting element, be used to send business request information to synchronous originating end, described business request information comprises the identification information of the business of request, the business of described request has the business that does not have in the described local service directory information for described operation list message, if all business of the described operation list message that comprises in the described local service directory information, the then number zero setting of the business of described request;
Professional circular message sink unit is used to receive the business of motor synchronizing originating end to circulate a notice of message, and described business circular message comprises the specifying information of the business of described request, according to the business information of described professional circular information updating this locality preservation;
Professional acknowledge message transmitting element is used to send professional acknowledge message to synchronous originating end.
In the embodiment of the invention, described PCE receives the operation list message of motor synchronizing originating end, and described operation list message comprises the identification information of the business that synchronous originating end is preserved; Described PCE obtains the local service directory information, and described local service directory information comprises local all the professional identification informations preserved of described PCE; More described operation list message of described PCE and described local service catalogue message confirm that described operation list message has, and the business that does not have in the described local service directory information; Described PCE sends business request information to synchronous originating end, described business request information comprises the identification information of the business of request, the business of described request has the business that does not have in the described local service directory information for described operation list message, if all business of the described operation list message that comprises in the described local service directory information, the then number zero setting of the business of described request; Described PCE receives the business circular message of motor synchronizing originating end, and described professional circular message comprises the specifying information of the business of described request, according to the local business information of preserving of described professional circular information updating; Described PCE sends professional acknowledge message to synchronous originating end.Adopt the present invention, PCE only upgrades the business that does not have in the local service directory information and come to have in the operation list message of motor synchronizing originating end, and the bandwidth of using is very little synchronously, has realized the synchronous fast of business information.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of path-calculating element business information method for synchronous schematic flow sheet that the embodiment of the invention provides;
Fig. 2 is a kind of synchronizing process schematic diagram that the embodiment of the invention provides;
Fig. 3 is a kind of network architecture diagram that the embodiment of the invention provides;
Fig. 4 is the another kind of synchronizing process schematic diagram that the embodiment of the invention provides;
Fig. 5 is another synchronizing process schematic diagram that the embodiment of the invention provides;
Fig. 6 is a kind of path-calculating element business information synchronizer structural representation that the embodiment of the invention provides.
Embodiment
Below by embodiment specific implementation process of the present invention is illustrated.Obviously, the embodiments described below are the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is a kind of path-calculating element business information method for synchronous that the embodiment of the invention provides, and comprising:
S101, described PCE receive the operation list message of motor synchronizing originating end, and described operation list message comprises the identification information of the business that synchronous originating end is preserved;
S102, described PCE obtains the local service directory information, and described local service directory information comprises local all the professional identification informations preserved of described PCE;
S103, more described operation list message of described PCE and described local service catalogue message confirm that described operation list message has, and the business that does not have in the described local service directory information;
S104, described PCE sends business request information to synchronous originating end, described business request information comprises the identification information of the business of request, the business of described request has the business that does not have in the described local service directory information for described operation list message, if all business of the described operation list message that comprises in the described local service directory information, the then number zero setting of the business of described request;
S105, described PCE receive the business circular message of motor synchronizing originating end, and described professional circular message comprises the specifying information of the business of described request, according to the local business information of preserving of described professional circular information updating;
S106, described PCE send professional acknowledge message to synchronous originating end, confirm to have finished the renewal of professional circular message.
Wherein, described synchronous originating end is path calculating client or path-calculating element.
If described PCE startup, described synchronous originating end startup or described PCE and described synchronous originating end start the back and connect for the first time, then notify synchronous originating end to send operation list message to described PCE by PCE, described operation list message comprises all professional identification informations of described synchronous originating end.
If described PCE and described synchronous originating end have been finished synchronously, the business that described synchronous originating end is preserved increases, and described method also comprises:
Described PCE receives the second professional circular message of motor synchronizing originating end, and the described second professional circular message comprises the specifying information of the business of increase, according to the local business information of preserving of described professional circular information updating;
Described PCE sends professional acknowledge message to synchronous originating end, confirms to have finished the renewal of the second professional circular message.
If described PCE and described synchronous originating end have been finished synchronously, the business deletion that described synchronous originating end is preserved, described method also comprises:
Described PCE receives the 3rd professional circular message of motor synchronizing originating end, and the described the 3rd professional circular message comprises the identification information of the business of deletion, according to the local business information of preserving of described professional circular information updating;
Described PCE sends professional acknowledge message to synchronous originating end, confirms to have finished the renewal of the 3rd professional circular message.
In the embodiment of the invention,,, stop to retransmit up to finding that both sides' syntople disconnects if do not receive in the certain hour and receive the response then resend message.Certain hour is not received the business request information from PCE after for example synchronous originating end transmission operation list message, then retransmits operation list message; Certain hour did not receive the business of motor synchronizing originating end to circulate a notice of message after PCE sent business request information, then retransmitted business request information; Certain hour is not received the professional acknowledge message from PCE after the professional circular of the originating end transmission synchronously message, then retransmits the professional message of circulating a notice of.
In the embodiment of the invention, comprise all professional identification informations of preserving on the synchronous originating end in the operation list message, in other embodiments, the identification information that comprises the partial service of preserving on the synchronous originating end in the operation list message, after finishing synchronously, this partial service sends another one operation list message, comprising other professional identification information of preserving on the synchronous originating end.Other message can send too several times, and for example professional circular message can reduce the bandwidth that takies like this.
Adopt the present invention, PCE only upgrades the business that does not have in the local service directory information and come to have in the operation list message of motor synchronizing originating end, and the bandwidth of using is very little synchronously, has realized the synchronous fast of business information.When PCE starts, described synchronous originating end startup or PCE start the back with originating end synchronously and connect the first time, then carry out once complete synchronously, promptly need comparison operation list message.When synchronous mistake once after, carry out again synchronously when then the business that can only preserve when synchronous originating end changes, the business that only need to upgrade variation this moment gets final product, and can reduce the bandwidth that takies synchronously.
The embodiment of the invention can increase some new TLV by the notify message of expansion PCEP agreement, realizes the synchronous of business information by new TLV.
As shown in table 1, be the head commonly used of PCEP message, wherein, Ver indicates version information; Flags indicates flag bit; Message-type indicates type of message; Message-length indicates message-length.
0 1 2 3
01234567890123456789012345678901
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|?Ver?| Flags | Message-Type?| Message-Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Table 1
The operation list message of originating end is realized by Service Info Summary (business information catalogue) message synchronously, carries professional identification information in the Service Info Summary message, and service identification information is used for business of unique identification.
Business request information is realized by Service Info Request (business information request) message, is sent by PCE, to PCC or other PCE requested service information.
The business of originating end circular message is realized by Service Info Notify message synchronously, can carry professional essential information in Service InfoNotify message.Professional essential information can include but not limited to traffic ID information, vocational work path, service protection path, Business Name, professional pre-set path, information such as professional reserved path.
Professional acknowledge message is realized by Service Info Acknowledge message, can carry Service Info Acknowledge message in Service Notify message, is used to notify synchronous originating end to finish the renewal of professional essential information.
A kind of implementation of synchronization message below only is provided, and those of ordinary skills expand other message easily or use existing message to realize the transmission of synchronization message, do not repeat them here.
As shown in Figure 2, a kind of synchronizing process schematic diagram that provides for the embodiment of the invention.
Originating end sends Service Info Summary message at S201 to synchronous PCE synchronously, the more field is true, wherein, the more field is used for indicating described Service Info Summary message whether the business of failing to give notice synchronous PCE is arranged, if have, then be made as true, if do not have, then be made as false, synchronous originating end is still true at S207 to the more field that synchronous PCE sends Service Info Summary message in the embodiment of the invention, up to S208, originating end is false to the more field that synchronous PCE sends Service Info Summary message synchronously, and all service identification information of indicating synchronous originating end to preserve have sent to synchronous PCE.
PCE sends Service Info Request message at S202 to synchronous originating end synchronously, be used for asking having in the Service Info Summary message of S201, and the information of the business that does not have in the synchronous PCE local service directory information, the information that needs the business that do not have in the synchronous PCE local service of the similar message request directory information after S207 and the S208, S209 for example, PCE sends Service InfoRequest message to synchronous originating end synchronously, be used for asking having in the Service Info Summary message of S208, and the information of the business that does not have in the PCE local service directory information synchronously.
Originating end sends Service Info Notify message at S203 to synchronous PCE synchronously, be used for transmitting the business information that S202Service Info Request message is asked, in the embodiment of the invention, the information of many business of request in the S202ServiceInfo Request message, synchronously originating end transmits the information of institute's requested service at twice at S203 and S205, and PCE receives and upgrades after the Service Info Notify message and send Service Info Acknowledge message to synchronous originating end respectively at S204 and S206 synchronously.
In the present embodiment, originating end sends several times to the Service Info Summary message that synchronous PCE sends synchronously, and originating end also repeatedly sends to the Service Info Notify message that synchronous PCE sends synchronously, can reduce the bandwidth of synchronous use like this.
As shown in Figure 3, a kind of network architecture for the embodiment of the invention provides comprises PCC1, PCC2, PCE1 and PCE2, wherein, PCC1, PCC2, PCE1 and PCE2 start simultaneously, and having 3 on the PCC1 is the business of starting point: PCC11, PCC12 and PCC13 with PCC1; Having 2 on the PCC2 is the business of starting point: PCC21, PCC22 with PCC2, and wherein PCC11, PCC12, PCC13, PCC21 and PCC22 are LSP.Whole business on PCC1 and the PCC2 are arranged on the PCE2, PCE1 by with PCE2 synchronously, obtained the professional PCC11 of PCC1, obtained a professional PCC21 on the PCC2, PCE1 was connected interruption and failed synchronous other business with PCE2 this moment.PCE1 sends a notification message to PCC1 and PCC2 respectively, and to start business information synchronous, and synchronizing process respectively as shown in Figure 4 and Figure 5.
PCE1 receives the operation list message Service Info Summary from PCC1 as shown in Figure 4, comprises the identification information of PCC11, PCC12 and PCC13; PCE1 obtains operation list information and relatively obtains lacking the information of PCC12 and PCC13, send business request information Service Info Require to PCC1, reception is from the business circular message Service Info Notify of PCC1, upgrade business information in view of the above, send professional acknowledge message to PCC1.
PCE1 receives the operation list message Service Info Summary from PCC2 as shown in Figure 5, comprises the identification information of PCC21 and PCC22; PCE1 obtains operation list information and relatively obtains lacking the information of PCC23, send business request information Service Info Require to PCC2, reception is upgraded business information in view of the above from the business circular message Service Info Notify of PCC2, sends professional acknowledge message to PCC2.
Fig. 6 is a kind of path-calculating element business information synchronizer that the embodiment of the invention provides, and comprising:
Operation list message sink unit 601 is used to receive the operation list message of motor synchronizing originating end, described operation list message to comprise the identification information of the business that synchronous originating end is preserved;
Local service directory information acquiring unit 602 is used to obtain the local service directory information, and described local service directory information comprises local all the professional identification informations preserved of described PCE;
Comparing unit 603 is used for more described operation list message and described local service catalogue message, confirms that described operation list message has, and the business that does not have in the described local service directory information;
Business request information transmitting element 604, be used to send business request information to synchronous originating end, described business request information comprises the identification information of the business of request, the business of described request has the business that does not have in the described local service directory information for described operation list message, if all business of the described operation list message that comprises in the described local service directory information, the then number zero setting of the business of described request;
Professional circular message sink unit 605 is used to receive the business of motor synchronizing originating end to circulate a notice of message, and described business circular message comprises the specifying information of the business of described request, according to the business information of described professional circular information updating this locality preservation;
Professional acknowledge message transmitting element 606 is used to send professional acknowledge message to synchronous originating end.
Described synchronous originating end is path calculating client or path-calculating element.
If described PCE startup, described synchronous originating end startup or described PCE and described synchronous originating end start the back and connect for the first time, described device also comprises notification unit, be used to notify synchronous originating end to send operation list message to described PCE, described operation list message comprises all professional identification informations of described synchronous originating end.
If described PCE and described synchronous originating end have been finished synchronously, the business that described synchronous originating end is preserved increases, professional circular message sink unit 605, also be used to receive the second professional circular message of motor synchronizing originating end, the described second professional circular message comprises the specifying information of the business of increase, according to the local business information of preserving of described professional circular information updating.
If described PCE and described synchronous originating end have been finished synchronously, the business deletion that described synchronous originating end is preserved, professional circular message sink unit 605, also be used to receive the 3rd professional circular message of motor synchronizing originating end, the described the 3rd professional circular message comprises the identification information of the business of deletion, according to the local business information of preserving of described professional circular information updating.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement, but the former is better execution mode under a lot of situation by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, described software product can be used to carry out above-mentioned method flow.This computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (10)
1. a path-calculating element PCE business information method for synchronous is characterized in that, comprising:
Described PCE receives the operation list message of motor synchronizing originating end, and described operation list message comprises the identification information of the business that synchronous originating end is preserved;
Described PCE obtains the local service directory information, and described local service directory information comprises local all the professional identification informations preserved of described PCE;
More described operation list message of described PCE and described local service catalogue message confirm that described operation list message has, and the business that does not have in the described local service directory information;
Described PCE sends business request information to synchronous originating end, described business request information comprises the identification information of the business of request, the business of described request has the business that does not have in the described local service directory information for described operation list message, if all business of the described operation list message that comprises in the described local service directory information, the then number zero setting of the business of described request;
Described PCE receives the business circular message of motor synchronizing originating end, and described professional circular message comprises the specifying information of the business of described request, according to the local business information of preserving of described professional circular information updating;
Described PCE sends professional acknowledge message to synchronous originating end.
2. method according to claim 1 is characterized in that, comprising:
Described synchronous originating end is path calculating client or path-calculating element.
3. method according to claim 1 is characterized in that, comprising:
If described PCE startup, described synchronous originating end startup or described PCE and described synchronous originating end start the back and connect for the first time, then notify described synchronous originating end to send operation list message to described PCE by described PCE, described operation list message comprises all professional identification informations of described synchronous originating end.
4. method according to claim 1 is characterized in that, if described PCE and described synchronous originating end have been finished synchronously, the business that described synchronous originating end is preserved increases, and described method also comprises:
Described PCE receives the second professional circular message of motor synchronizing originating end, and the described second professional circular message comprises the specifying information of the business of increase, according to the local business information of preserving of described professional circular information updating;
Described PCE sends professional acknowledge message to synchronous originating end.
5. method according to claim 1 is characterized in that, if described PCE and described synchronous originating end have been finished synchronously, the business that described synchronous originating end is preserved is deleted, and described method also comprises:
Described PCE receives the 3rd professional circular message of motor synchronizing originating end, and the described the 3rd professional circular message comprises the identification information of the business of deletion, according to the local business information of preserving of described professional circular information updating;
Described PCE sends professional acknowledge message to synchronous originating end.
6. a path-calculating element PCE business information synchronizer is characterized in that, comprising:
Operation list message sink unit is used to receive the operation list message of motor synchronizing originating end, described operation list message to comprise the identification information of the business that synchronous originating end is preserved;
Local service directory information acquiring unit is used to obtain the local service directory information, and described local service directory information comprises local all the professional identification informations preserved of described PCE;
Comparing unit is used for more described operation list message and described local service catalogue message, confirms that described operation list message has, and the business that does not have in the described local service directory information;
The business request information transmitting element, be used to send business request information to synchronous originating end, described business request information comprises the identification information of the business of request, the business of described request has the business that does not have in the described local service directory information for described operation list message, if all business of the described operation list message that comprises in the described local service directory information, the then number zero setting of the business of described request;
Professional circular message sink unit is used to receive the business of motor synchronizing originating end to circulate a notice of message, and described business circular message comprises the specifying information of the business of described request, according to the business information of described professional circular information updating this locality preservation;
Professional acknowledge message transmitting element is used to send professional acknowledge message to synchronous originating end.
7. device according to claim 6 is characterized in that, comprising:
Described synchronous originating end is path calculating client or path-calculating element.
8. device according to claim 6, it is characterized in that, if described PCE startup, described synchronous originating end startup or described PCE and described synchronous originating end start the back and connect for the first time, described device also comprises notification unit, be used to notify described synchronous originating end to send operation list message to described PCE, described operation list message comprises all professional identification informations of described synchronous originating end.
9. device according to claim 6, it is characterized in that, if described PCE and described synchronous originating end have been finished synchronously, the business that described synchronous originating end is preserved increases, professional circular message sink unit, also be used to receive the second professional circular message of motor synchronizing originating end, the described second professional circular message comprises the specifying information of the business of increase, according to the local business information of preserving of described professional circular information updating.
10. device according to claim 6, it is characterized in that, if described PCE and described synchronous originating end have been finished synchronously, the business deletion that described synchronous originating end is preserved, professional circular message sink unit, also be used to receive the 3rd professional circular message of motor synchronizing originating end, the described the 3rd professional circular message comprises the identification information of the business of deletion, according to the local business information of preserving of described professional circular information updating.
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| CN101540726A (en) * | 2009-04-27 | 2009-09-23 | 华为技术有限公司 | Method, client, server and system of synchronous data |
| CN101594369A (en) * | 2009-06-18 | 2009-12-02 | 中兴通讯股份有限公司 | In dynamic content distribution service, realize synchronous method and the terminal of channel content |
| CN101808133A (en) * | 2010-03-16 | 2010-08-18 | 青岛海信移动通信技术股份有限公司 | Method and terminal for synchronizing dynamic content distribution business data |
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| WO2005055510A1 (en) * | 2003-12-05 | 2005-06-16 | Huawei Technologies Co., Ltd. | Tributary unit of synchronous digital hierarchy and sdh apparatus node |
| CN101540726A (en) * | 2009-04-27 | 2009-09-23 | 华为技术有限公司 | Method, client, server and system of synchronous data |
| CN101594369A (en) * | 2009-06-18 | 2009-12-02 | 中兴通讯股份有限公司 | In dynamic content distribution service, realize synchronous method and the terminal of channel content |
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Application publication date: 20110720 |