CN101686142B - Network protection method, system and apparatus - Google Patents
Network protection method, system and apparatus Download PDFInfo
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- CN101686142B CN101686142B CN2008101488267A CN200810148826A CN101686142B CN 101686142 B CN101686142 B CN 101686142B CN 2008101488267 A CN2008101488267 A CN 2008101488267A CN 200810148826 A CN200810148826 A CN 200810148826A CN 101686142 B CN101686142 B CN 101686142B
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Abstract
The embodiment of the invention discloses a network protection method, system and apparatus. A node in the share protection path receives switch request type massages carrying the services in the working paths; the node in the share protection path allocates the resource in the share protection path to the switch request type services with high priority according to the switch request types of the services in all working paths, if the some service in the working path are judged to need switching based on the switch request types of the services in all working paths, and protects the services. In the embodiment of the invention, the node in the share protection path obtains the switch request types of the services in the working paths according to the messages sent by the nodes of the working paths, and allocates the resource in the share protection path to the service in a specific working path.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of network protection method, system and equipment.
Background technology
In transmitting network, the realization that protection recovers is unusual important techniques, and it can make and professionally be restored under the situation that network breaks down and continue transmission.In existing optical-fiber network; following protection recovery technology are generally arranged: a kind of is traditional looped network protection and 1+1 trail protection technology; traditional looped network and trail protection technology can provide the business recovery time less than 50ms, but need the extra bandwidth of reservation 50% to be used for protection usually.Another kind is ASON (Automatic Switched OpticalNetwork; ASON) recovery technology in; recovery technology among the ASON recovers professional by calculate and set up a new path in real time after service disconnection; need not reserve specific protection bandwidth in advance, but need professional recovery time the hundreds of millisecond by several seconds.In addition; the technology that also has a kind of 1:N or M:N; this technology is by being many a shared bandwidths of professional reservation; reach purpose to many service protections; if wherein one or M bar in these business interrupt (by the path of many business of making rational planning for; can avoid many business to interrupt simultaneously), can guarantee that professional recovery time is less than 50ms.But in 1:N or M:N resist technology, protected many business must be homology and chummage, and this has reduced the flexibility of this technology.
At the problem that exists in the above-mentioned protection recovery technology, a kind of shared MESH (grid) recovery technology has been proposed in the prior art, make specific business share special-purpose resource conservation.As shown in Figure 1, two professional A-B-C-F and A-D-E-F share the A-G-F as the share protect path, and promptly the share protect path is shared by two business.Interconnection on the share protect path is not got through, and after business breaks down, interrupts such as professional A-B-C-F, then alternately the A-G-F path is got through by signaling message, realizes professional continuation transmission.Based on shared Mesh recovery technology, prior art further provides the method for shared Mesh protection.Concrete, after setting up operating path, on the good share protect path of planning, carry out a signaling message immediately, be used for consulting and determine on the way local label information, on each node, set up the mapping table of local label.Other operating paths to the share protect resource also move similar process.When wherein having no progeny in an operating path; node on the operating path sends the share protect path and gets through request; after share protect path node is on the way received, set up corresponding share protect path according to prior definite good local label mapping table, thereby the share protect path is got through.Because local label mapping table is to set up in advance in this method; therefore share protect path node on the way by relatively simply handling, can be got through the path when receiving the request of getting through; recover with respect to shared Mesh, improved professional recovery time greatly.
The inventor finds that there is following shortcoming at least in prior art in realizing process of the present invention:
In the existing shared Mesh resist technology; when request is got through in the node processing path on the way in the share protect path; need the local label mapping table of retrieval; handle still complicated more for a long time at local label mapping table; efficient is still not high, is difficult to reach the carrier class performance requirement of service outage duration less than 50ms sometimes.And, set up local label mapping table and need when setting up service path, on the share protect path, carry out a signaling message, increased the complexity of scheme.
Summary of the invention
Embodiments of the invention provide a kind of network protection method, system and equipment, and the carrier class performance requirement of service protection is satisfied in the protection of realization service path that can be easy.
Embodiments of the invention provide a kind of network protection method, are applied to comprise in the network of many operating paths, and for described many operating paths, planning has the share protect path of sharing or partly sharing fully in the described network, and described method comprises:
Node on the share protect path receives the message that carries switching request type professional on the operating path, specifically comprises:
Receive the message that carries switching request type professional on the operating path with the node on the share protect path that first node on the operating path is connected;
Next-hop node in described share protect path sends message;
Described next-hop node continues to transmit described message in the node in described share protect path, arrive node on the operating path until described message;
When the node on the described share protect path judges that according to switching request type professional on described each operating path the service needed that has on the operating path is switched;, with the priority high business of the resource allocation in the described share protect path business that the priority of described switching request type is high is protected according to switching request type professional on each operating path to described switching request type.
Embodiments of the invention also provide a kind of node device; be applied to comprise in the network of many operating paths that for described many operating paths, planning has the share protect path of sharing or partly sharing fully in the described network; described node device is positioned on the share protect path, comprising:
The message receiving element is used to receive the message that carries switching request type professional on the operating path;
Resource allocation unit; be used for obtaining switching request type professional on each operating path according to the message that described message receiving element receives; when judgement has service needed on the operating path to switch; give the high business of priority of described switching request type according to the switching request type of the business on each operating path with the resource allocation in the described share protect path, described business is protected.
Embodiments of the invention also provide a kind of network protection system; be applied to comprise in the network of many operating paths; in the described network for described many operating paths; planning has the share protect path of sharing or partly sharing fully; described network protection system comprises the node that is positioned on the operating path; and be positioned at node on the share protect path
Node on the described operating path is used for sending the message that carries switching request type professional on the operating path to the node in share protect path;
Node on the described share protect path; be used to receive the message that carries switching request type professional on the operating path; when judging that according to switching request type professional on described each operating path the service needed that has on the operating path is switched;, with the priority high business of the resource allocation in the described share protect path described business is protected according to switching request type professional on each operating path to described switching request type.
Compared with prior art, embodiments of the invention have the following advantages:
Send the mode of message by the node in the share protect path; the message that is sent according to the node in each operating path by the node in the share protect path obtains switching request type professional on each operating path, thereby gives business on the specific operating path with the resource allocation in the share protect path.This method need not set up local label mapping table on each node in the share protect path, the protection of realization service path that can be easy; By real-time processing, satisfy the carrier class performance requirement of service protection simultaneously to message.
Description of drawings
Fig. 1 is a networking schematic diagram of sharing the MESH recovery technology in the embodiments of the invention;
Fig. 2 is the flow chart of network protection method in the embodiments of the invention;
Fig. 3 is the form schematic diagram of the message that transmits on the share protect path in the embodiments of the invention;
Fig. 4 is the networking schematic diagram of employed application scenarios in the embodiments of the invention;
Fig. 5 is in the embodiments of the invention under each operating path normal condition, the working method schematic diagram in share protect path;
Fig. 6 is when in the embodiments of the invention fault happens in operational being arranged, the working method schematic diagram in share protect path;
Fig. 7 is when two operating paths successively break down in the embodiments of the invention, the working method schematic diagram in share protect path;
Fig. 8 is when many operating paths interrupt simultaneously in the embodiments of the invention, the working method schematic diagram in share protect path;
Fig. 9 is when many operating paths interrupt simultaneously in the embodiments of the invention, another working method schematic diagram in share protect path;
Figure 10 is when many operating paths interrupt simultaneously in the embodiments of the invention, a working method schematic diagram again in share protect path;
Figure 11 is the structural representation of node device in the embodiments of the invention;
Figure 12 is another structural representation of node device in the embodiments of the invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Embodiments of the invention provide a kind of network protection method, are applied to comprise in the network of many operating paths.For many operating paths, planning has fully to be shared or share protect path that part is shared in this network, and whole or segmentation is shared and given many operating paths with the resource in the share protect path.This network protection method is applied to the node in share protect path as shown in Figure 2, comprising:
Node on step s201, the share protect path receives the message that carries switching request type professional on the operating path.
Concrete, after operating path is set up, the node of the node of operating path on the share protect path of operating path correspondence sends message, comprise switching request type professional on the operating path in the message, professional switching request type comprises one or more in Forced Switch, disturbance switching, Manual Switch and professional the returning on the operating path; Different switching request types have different priority.
In addition, can also comprise service priority professional on the operating path in this message, maybe can also comprise overall label information professional on the operating path.Wherein, Ye Wu overall label information comprises professional index and professional source node ID; Service priority professional on the operating path comprises a plurality of default service priority.
When the node on step s202, the share protect path judges that according to switching request type professional on each operating path the service needed that has on the operating path is switched;, with the priority high business of the resource allocation in the share protect path business is protected according to switching request type professional on each operating path to the switching request type.
Concrete, for above-mentioned steps s202, when giving high professional of the priority of switching request type with the resource allocation in the share protect path, if the high business of priority of switching request type is a plurality of, the message that can receive according to the node from different operating paths further obtains the service priority of different business; And, give the high business of service priority with the resource allocation in the share protect path according to the result who gets access to.
Further, if the high business of service priority is a plurality of, the message that can receive according to the node from different operating paths further obtains the overall label information of different business; And, according to default rule the resource allocation in the share protect path is given to have the business of specific overall label information according to the result who gets access to.
In the method that the embodiment of the invention provides; send the mode of message by the node in the share protect path; the message that is sent according to node on each operating path by the node in the share protect path obtains switching request type professional on each operating path, thereby gives business on the specific operating path with the resource allocation in the share protect path.This method need not set up local label mapping table on each node in the share protect path, the protection of realization service path that can be easy; By real-time processing, satisfy the carrier class performance requirement of service protection simultaneously to message.
In the embodiments of the invention, need pre-configured operating path and the share protect path corresponding with operating path.To the node on each bar operating path, the node on its corresponding share protect path continues cycle transmission message, and this transmission cycle can be provided with as required.Comprise overall label information in this message, the message format that the embodiment of the invention is used as shown in Figure 3: the implication of wherein each field is as follows:
Request (request): length is 1 byte, the expression switching request.
SwitchCode (switching sign indicating number): length is 1 byte, and sign indicating number is switched in expression.
ServiceIndex (professional index): length is 2 bytes, represents professional index, can business of unique identification on every node.
SourceNodeID (source node ID): length is 4 bytes, and the source node ID that expression is professional can node of unique identification in the whole network.
The overall label information for the treatment of that carries in the message is made up of SourceNodeID+ServiceIndex, the NodeId of 4 bytes is the whole network unique (this NodeId can be IP addresses of nodes), ServiceIndex is unique on each node, like this SourceNodeID+ServiceIndex can be in the whole network business of unique identification.
In addition; after by SourceNodeID+ServiceIndex a business being carried out unique identification; the switching request that can carry by Request and SwitchCode field and professional information such as priority etc. are carried out corresponding protection so that receive the node of message to uniquely identified business in the message.
Above-mentioned message takies 8 bytes altogether; message is less; can in expense, transmit; such as in OTH (Optical Transport Hierarchy, optical transport hierarchy), can utilize APS (AutomaticProtection Switched; automatic protection switching)/PCC (Protection Communications Channel; the protection communication channel) expense is transmitted, 4 bytes of the every frame of APS/PCC expense, and therefore two multi-frames can transmit this message.Need to prove that above-mentioned message format is just in order more clearly to describe the scheme of the embodiment of the invention, and be different from the protection range that limits the embodiment of the invention.
In the Request embodiments of the invention, the value of Request and two fields of SwitchCode is exemplified below shown in table 1 and the table 2.
Table 1.Request field value:
Table 2.SwitchCode field value:
By table 1 as seen, according to this Request example of fields, can identify professional different switching request type on every operating path, as Forced Switch, disturbance switching, Manual Switch etc.Different switching request types have different priority.And the switching request type on the different operating path can be used as one of normative reference of resource allocation on the share protect path.
By table 2 as seen, according to this SwitchCode example of fields, can identify 7 kinds of different normal priorities and the Switching priority corresponding with each normal priority, the Switching priority of normal priority and normal priority correspondence has constituted all service priority together.Service priority purposes in actual applications is: such as when the business of two different business priority is interrupted simultaneously, the business that the regulation service priority is high will preferentially obtain the resource on the share protect path; If interrupt the professional back that service priority is high, then it can rob the resource on the share protect path that the low service priority business of interrupting of taking the lead obtained.In the embodiments of the invention, add that with normal priority the Switching priority that 0x07 is the normal priority correspondence is an example, the two is corresponding one by one.
Need to prove, when specific implementation, can and adjust concrete value and corresponding priority level as required not according to the content value of regulation in above-mentioned table 1 and the table 2.Below in each application scenarios of the present invention, for convenience of description, all being as the criterion with the content in this table 1 and the table 2 describes.
In the application scenarios of the embodiment of the invention, be example with networking situation shown in Figure 4.Method to network protection in the embodiment of the invention describes.Among Fig. 4, have operating path 1 between A-B, have operating path 2 between the C-D, the path between the E-F is the share protect path, and then A-E-F-B is share protect path 1, as the share protect path of operating path between A-B 1; C-E-F-D is share protect path 2, as the share protect path of operating path between C-D 2.In this scene, the resource conservation that the resource conservation in E-F section share protect path is shared as part is by the operating path between operating path between the A-B 1 and the C-D 2 is shared.
Switching of carrying out when below at first supposing different fault happens in operational has identical type, and the working method in share protect path is described thus.The type of switching of carrying out when wherein, all taking place with fault is that example describes for " disturbance switching ".In addition, the transfer mode of message is specially: receive the message that carries switching request type professional on the operating path with the node in the share protect path that first node on the operating path is connected, the next-hop node in this share protect path sends message; This next-hop node continues to transmit message in the node in share protect path, arrives node on the operating path until message.With the network among Fig. 4 is example, and the message on the operating path 1 is sent by node A, and node E on the overprotection path and node F finally arrive Node B; Message on the operating path 2 is sent by node C, and node E on the overprotection path and node F finally arrive node D.In the process of the network planning, all dispose the address of next jumping on each node in the network and carry out the transmission of message according to next hop address.For example, the next hop address in the known protection of node A path is node E, then message is sent to node E; Node E sends message according to the address of next jumping to node F; Node F sends message according to the address of next jumping to Node B; After Node B receives message, the transmission of termination message.
(1) under each operating path normal condition, the working method in share protect path.
Concrete, should ask the network protection method under the condition may further comprise the steps:
(1) under the normal situation of operating path; node on the share protect path receives the message that the node on the operating path sends; the value of the Request field in the message is 0x00 (i.e. a normal condition in the table 1), and the value of SwitchCode field is professional normal priority.
(2) node on the share protect path receives message, according to the resource on the protection of the information distribution in the message path.Concrete, for two business on two operating paths, if the priority of two business is identical, such as the SwitchCode field in the message all is 0x01, then the node on the share protect path adopts the principle of First come first served when Resources allocation, receive earlier message that the first node on which bar operating path sends just resource allocation to the business on any bar operating path, resource by which bar business is just taken earlier and by which bar business is taken always afterwards; If two the service priority difference of business is 0x01 such as the SwitchCode field in the message, the SwitchCode field in another message is 0x02, then will protect resource allocation on the path to give and has the business of high service priority.
With networking situation shown in Figure 5 is example, and for business 1, A-B is an operating path 1, and A-E-F-B is share protect path 1; For business 2, C-D is an operating path 2, and C-E-F-D is share protect path 2.Article two, share protect path sharing E-F section resource.Suppose that professional 1 service priority is 0x01; professional 2 service priority is 0x03; then the value of the Request of the message that transmits on the share protect path and SwitchCode respectively as shown in Figure 5; wherein because professional 2 service priority is higher, so the node on the share protect path distributes to professional 2 with resource conservation.
In fact under the normal situation of operating path, resource conservation by which bar business is taken, and there is no what meaning, only is used for illustrating the implication of priority here.
When (two) fault happens in operational being arranged, the working method in share protect path.
Concrete, should ask the network protection method under the condition may further comprise the steps:
(1) node on the share protect path receives the message that the first node on the operating path sends.Concrete; after a fault happens in operational; first node on this operating path that breaks down is in the message that the share protect path sends; Request field and SwitchCode field all change; with the content shown in table 1 and the table 2 is example; the value of Request field is 0x02 (i.e. a disturbance switching in the table 1), and the value in the SwitchCode field can add 0x07.
(2) node on the share protect path receives message, distributes the resource of protecting on the path according to message.Concrete; in each message that receives; for message from the first node of the operating path that breaks down; wherein the value of SwitchCode field can be than any value height from the SwitchCode field in the message of the first node in operate as normal path; business on the operating path that promptly breaks down has higher service priority, and then the node on the share protect path is distributed to business on this operating path that breaks down with resource conservation.
With networking situation shown in Figure 6 is example, and after operating path 1 broke down, the Request field value of the message that node A sends on share protect path 1 was 0x02, and SwitchCode field value adds that therefore 0x07 becomes 0x07 by 0x00.Because the SwitchCode value 0x07 on professional 1 the share protect path 1 is greater than the SwitchCode value 0x03 on professional 2 the share protect path 2.Therefore the node on the share protect path is distributed to business 1 with resource conservation, and share protect path 1 is got through.
Article (three) two, when operating path successively breaks down, the working method in share protect path.
Concrete, should ask the network protection method under the condition may further comprise the steps:
(1) node on the share protect path receives the message that the first node on the operating path sends.Concrete; suppose after the business on the operating path that breaks down takies resource conservation on the share protect path; another operating path also breaks down; in the message that the node of first node on this operating path that breaks down on the share protect path sends; Request field and SwitchCode field all change; with the content shown in table 1 and the table 2 is example; the value of Request field is 0x02 (i.e. a disturbance switching in the table 1), and the value in the SwitchCode field can add 0x07.
(2) node on the share protect path receives message, distributes the resource of protecting on the path according to message.Concrete; node on the share protect path need compare the value in the SwitchCode field in the message that transmits in two share protect paths; service priority with business of higher SwitchCode value wants high, so the node on the share protect path is distributed to resource conservation the business with higher service priority.
More than in the networking situation shown in Figure 6, after operating path 1 broke down, professional 1 obtained resource conservation.The a certain moment afterwards is an example with networking situation shown in Figure 7, and operating path 2 also breaks down.Then the Request field value of message is 0x02 on the share protect path 2, and SwitchCode field value adds that therefore 0x07 becomes 0x0a by 0x03.Because the SwitchCode=0x0a on professional 2 the share protect path 2 is greater than the SwitchCode=0x08 on professional 1 the share protect path 1; promptly professional 2 have higher service priority; therefore the node on the share protect path is distributed to business 2 with resource conservation, and share protect path 2 is got through.
When (four) many operating paths interrupt simultaneously, the working method in share protect path.
Concrete, should ask the network protection method under the condition may further comprise the steps:
(1) node on the share protect path receives the message that the first node on the operating path sends.Concrete, suppose that the operating path more than two interrupts simultaneously, the first node on the operating path that then respectively breaks down is in the message that the share protect path sends, and Request field and SwitchCode field all change.
(2) node on the share protect path receives message, distributes the resource of protecting on the path according to message.Concrete, the node on the share protect path is the height of service priority in the message that sends of the first node of each operating path at first relatively, and the business that service priority is high obtains the resource in the share protect path.With situation shown in Figure 7 is example, supposes that the operating path 1 of business 1 and professional 2 operating path 2 break down simultaneously, and then the node on the share protect path is distributed to business 2 with resource conservation, and share protect path 2 is got through.
Below many operating paths are had an identical service priority situation describe.With networking situation shown in Figure 8 is example; if identical (if the priority difference then the resource simultaneous hold can not take place of the service priority of operating path 1 and operating path 2; the business that priority is high will obtain resource conservation); and two operating path interrupts simultaneously, then initiates competition to the resource conservation of sharing from A point and D point respectively.When the node E of shared resource section or F receive different messages; if judge that the service priority of two business is identical and from different directions; then this node just can further be implemented certain strategy according to overall label; such as allowing the big professional preferential resource (the current little professional preferential resource that obtains on the share protect path of overall label that also can allow) that obtains on the share protect path of overall label, to solve resource conservation simultaneous hold problem.
With networking situation shown in Figure 9 is example, the NodeID that supposes professional 1 source node A is 192.168.1.6 (being that the IP address is that example describes with NodeID here), ServiceIndex is 0x0806, and the NodeID of professional 2 source node D is 192.168.1.2, and ServiceIndex is 0x0002.Professional 1 and professional 2 priority all is 0x01, and then the Request of the message that transmits on the share protect path is 0x00, and the value of SwitchCode is 0x01.
When operating path 1 when operating path 2 breaks down simultaneously; send message respectively from different operating path end points; at E-F section generation simultaneous hold; E point and F point receive the message from both direction, relatively the overall label in the message, i.e. SourceNodeID+ServiceIndex; to allow the big business of overall label preferentially obtain resource is example; the overall label of then finding professional 1 correspondence is big, so the node on the share protect path distributes to resource conservation professional 1, and share protect path 1 is got through.
When (five) fault of operating path disappears, the working method in share protect path.
Concrete, should ask the network protection method under the condition may further comprise the steps:
(1) node on the share protect path receives the message that the first node on the operating path sends.Concrete; after the operating path fault disappears; the Request value becomes 0x04 (be that business is returned, priority is minimum) in first node on this operating path message that node sends on the share protect path of correspondence, and the service priority of SwitchCode value representation is reduced to normal priority.
(2) node on the share protect path receives message, distributes the resource of protecting on the path according to message.Concrete, the SwitchCode value in the more a plurality of messages of the node on the share protect path, the service priority with the highest SwitchCode value business is the highest, will obtain resource conservation.Share protect path working method when the fault on this flow process and the above-mentioned operating path takes place is similar, is not repeated in this description at this.
For other switchover modes of describing in the table 1, the processing method when taking place as single switchover modes such as " Forced Switch " or " Manual Switch ", identical with the processing mode of disturbance switching in above-mentioned () to (five), be not repeated in this description at this.
Under the situation that multiple switchover mode coexists when below describing fault happens in operational, the working method in share protect path.Concrete, the network protection method under this situation may further comprise the steps:
(1) node on the share protect path receives the message that the first node on the operating path sends.Concrete; in first node on the operating path that respectively the breaks down message that node sends in the share protect path; Request field and SwitchCode field all change, because the switchover mode difference, so the Request field value in each message is not quite similar.
(2) node on the share protect path receives message, distributes the resource of protecting on the path according to message.Concrete; node on the share protect path at first compares the priority of the switching request type on the operating path in the Request field in the message, that professional resource that obtains in share protect path that the priority of the switching request type in the Request field is the highest.
With situation shown in Figure 10 is example; suppose that the operating path 1 of business 1 and professional 2 operating path 2 break down; node on the operating path that breaks down is in the message that the share protect path sends, and Request field and SwitchCode field all change.Before assumed fault took place, the Request field value of message was 0x00 on the share protect path 1, and SwitchCode field value is 0x01; The Request field value of message is 0x00 on the share protect path 2, and SwitchCode field value is 0x01.When fault took place, operating path 1 carried out Forced Switch, and service path 2 carries out disturbance switching, and then the Request field value of message is 0x01 on the share protect path 1, and SwitchCode field value is 0x08; The Request field value of message is 0x02 on the share protect path 2, and SwitchCode field value is 0x08.Because the priority of the Request=0x01 on professional 1 the share protect path 1 is greater than the Request=0x02 on professional 2 the share protect path 2, so the node on the share protect path distributes to resource conservation professional 1, and share protect path 1 is got through.
If have the Request field of a plurality of messages to have the switching request type of limit priority simultaneously, then further compare the height of service priority in its SwitchCode field, give the highest business of service priority with the resource allocation in the share protect path; If still have a plurality of messages to have the highest service priority simultaneously; then further compare the overall label in the message; be SourceNodeID+ServiceIndex, according to default rule the resource allocation in the share protect path given to have the business of specific overall label.The comparison of this service priority and the comparison of overall label can not be repeated in this description at this with reference to situation about describing in the foregoing description () to (five).
Need to prove in addition, for the business of failing to take share protect path resource in the foregoing description, can seek new path, to recover continuation transmission to business by ASON recovery technology or other existing recovery technology.Equally, if the business of low priority is interrupted by the service occupation of high priority, also can realize the continuation of business is transmitted by ASON recovery technology or other existing recovery technology.
In the method that the embodiment of the invention provides; send the mode of message by the node in the share protect path; the message that is sent according to the node in each operating path by the node in the share protect path obtains switching request type professional on each operating path, thereby gives business on the specific operating path with the business on the resource in the share protect path.This method need not set up local label mapping table on each node in the share protect path, the protection of realization service path that can be easy; By real-time processing, satisfy the carrier class performance requirement of service protection simultaneously to message.At last, with the comparative result of the overall label that carries in the different messages allocation criterion, solved that many business are at war with to resources shared and the problem of simultaneous hold as protection path resource.
Embodiments of the invention also provide a kind of network protection system; be applied to comprise in the network of many operating paths; in this network for many operating paths; planning has the share protect path of sharing or partly sharing fully; this network protection system comprises the node that is positioned on the operating path; and be positioned at node on the share protect path, wherein:
Node on the operating path is used for sending the message that carries switching request type professional on the operating path to the node in share protect path;
Node on the share protect path; be used to receive the message that carries switching request type professional on the operating path; when judging that according to switching request type professional on each operating path the service needed that has on the operating path is switched;, with the priority high business of the resource allocation in the share protect path this business is protected according to switching request type professional on each operating path to the switching request type.
Embodiments of the invention also provide a kind of node device; be applied to comprise in the network of many operating paths for many operating path planning the share protect path of sharing or partly sharing is fully arranged in this network, this node device is positioned on the share protect path; as shown in figure 11, comprising:
Concrete, as shown in figure 12, resource allocation unit 20 specifically comprises in the embodiment of the invention:
First obtains subelement 21, is used to obtain switching request type professional on each operating path.
The first resource allocation subelement 22 is used for according to switching request type professional on each operating path, with the resource allocation in the share protect path to the first high business of priority of obtaining the switching request type that subelement 21 gets access to.
In addition, can also comprise:
Second obtains subelement 23, is used for obtaining each professional service priority when the first high business of priority of obtaining the switching request type that subelement 21 gets access to when being a plurality of.
The second resource allocation subelement 24 is used for according to service priority professional on each operating path the resource allocation in the share protect path being obtained the high business of service priority that subelement 23 gets access to second.
In addition, can also comprise:
The 3rd obtains subelement 25, is used for obtaining the overall label information of each business when second when to obtain the high business of service priority that subelement 23 gets access to be a plurality of.
Information resources distribute subelement 26, are used for according to overall label information professional on each operating path, give the 3rd to obtain the business with specific overall label information that subelement 25 gets access to the resource allocation in the share protect path according to default rule.
In the system and equipment that the embodiment of the invention provides; send the mode of message by the node in the share protect path; the message that is sent according to the node in each operating path by the node in the share protect path obtains switching request type professional on each operating path, thereby gives business on the specific operating path with the resource allocation in the share protect path.This method need not set up local label mapping table on each node in the share protect path, the protection of realization service path that can be easy; By real-time processing, satisfy the carrier class performance requirement of service protection simultaneously to message.At last, with the comparative result of the overall label that carries in the different messages allocation criterion, solved that many business are at war with to resources shared and the problem of simultaneous hold as protection path resource.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (14)
1. a network protection method is characterized in that, is applied to comprise in the network of many operating paths, and for described many operating paths, planning has the share protect path of sharing or partly sharing fully in the described network, and described method comprises:
Node on the share protect path receives the message that carries switching request type professional on the operating path, specifically comprises:
Receive the message that carries switching request type professional on the operating path with the node on the share protect path that first node on the operating path is connected;
Next-hop node in described share protect path sends message;
Described next-hop node continues to transmit described message in the node in described share protect path, arrive node on the operating path until described message;
When the node on the described share protect path judges that according to switching request type professional on described each operating path the service needed that has on the operating path is switched;, with the priority high business of the resource allocation in the described share protect path business that the priority of described switching request type is high is protected according to switching request type professional on each operating path to described switching request type.
2. the method for claim 1 is characterized in that, the switching services request type comprises one or more in Forced Switch, disturbance switching, Manual Switch and professional the returning on the described operating path; Different switching request types have different priority.
3. method as claimed in claim 2 is characterized in that, also comprises service priority professional on the operating path in the described message.
4. method as claimed in claim 3 is characterized in that, when the business that the priority of described switching request type is high is a plurality of, also comprises:
The service priority of business on the operating path of switching is as required given the high business of service priority with the resource allocation in the share protect path.
5. method as claimed in claim 4 is characterized in that, also comprises overall label information professional on the operating path in the described message.
6. method as claimed in claim 5 is characterized in that, when the business that described service priority is high is a plurality of, also comprises:
The overall label information of business on the operating path of switching as required; According to default rule the resource allocation in the share protect path is given and to have the business of specific overall label information.
7. as claim 1,2,3 or 5 described methods, it is characterized in that in optical transport hierarchy OTH, described message is carried in automatic protection switching APS expense or the protection communication channel PCC expense.
8. a node device is characterized in that, is applied to comprise in the network of many operating paths; in the described network for described many operating paths; planning has the share protect path of sharing or partly sharing fully, and described node device is positioned on the share protect path, comprising:
The message receiving element is used to receive the message that carries switching request type professional on the operating path;
Resource allocation unit; be used for obtaining switching request type professional on each operating path according to the message that described message receiving element receives; when judgement has service needed on the operating path to switch; give the high business of priority of described switching request type according to the switching request type of the business on each operating path with the resource allocation in the described share protect path, the business that the priority of described switching request type is high is protected.
9. node device as claimed in claim 8 is characterized in that, on each operating path that described resource allocation unit gets access in the professional switching request type:
Described switching request type comprises one or more in Forced Switch, disturbance switching, Manual Switch and professional the returning; Different switching request types have different priority;
When in described message, also comprising service priority professional on the operating path, also get access to service priority professional on each operating path;
When in described message, also comprising overall label information professional on each operating path, also get access to overall label information professional on each operating path.
10. node device as claimed in claim 9 is characterized in that, described resource allocation unit comprises:
First obtains subelement, is used to obtain switching request type professional on each operating path;
The first resource allocation subelement is used for the resource allocation in the share protect path being given the high business of priority of switching request type according to obtaining switching request type professional on each operating path that subelement obtains from described first.
11. node device as claimed in claim 10 is characterized in that, described resource allocation unit also comprises:
Second obtains subelement, is used for obtaining each professional service priority when the described first high business of priority of obtaining the switching request type that subelement gets access to when being a plurality of;
The second resource allocation subelement is used for giving the high business of service priority according to obtaining service priority professional on each operating path that subelement obtains from described second with the resource allocation in the share protect path.
12. node device as claimed in claim 11 is characterized in that, described resource allocation unit also comprises:
The 3rd obtains subelement, is used for obtaining the overall label information of each business when described second when to obtain the high business of service priority that subelement gets access to be a plurality of;
Information resources distribute subelement, are used for according to default rule the resource allocation in the share protect path being given to have the business of specific overall label information according to obtaining professional overall label information on each operating path that subelement obtains from the described the 3rd.
13., it is characterized in that in optical transport hierarchy OTH, described message is carried in automatic protection switching APS expense or the protection communication channel PCC expense as each described node device in the claim 8 to 12.
14. network protection system; be applied to comprise in the network of many operating paths; in the described network for described many operating paths; planning has the share protect path of sharing or partly sharing fully; described network protection system comprises the node that is positioned on the operating path; and be positioned at node on the share protect path, it is characterized in that:
Node on the described operating path is used for sending the message that carries switching request type professional on the operating path to the node in share protect path;
Node on the described share protect path; be used to receive the message that carries switching request type professional on the operating path; when judging that according to switching request type professional on described each operating path the service needed that has on the operating path is switched;, with the priority high business of the resource allocation in the described share protect path business that the priority of described switching request type is high is protected according to switching request type professional on each operating path to described switching request type.
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| CN2008101488267A CN101686142B (en) | 2008-09-27 | 2008-09-27 | Network protection method, system and apparatus |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102035671B (en) * | 2010-10-15 | 2016-05-25 | 中兴通讯股份有限公司 | A kind of method and system of Hot Spare |
| CN102143065B (en) * | 2011-02-09 | 2014-02-19 | 华为技术有限公司 | Fault protection method and equipment |
| CN102857950B (en) * | 2011-06-28 | 2017-06-27 | 中兴通讯股份有限公司 | The notifying method and system of a kind of shared grid protection |
| CN103023683B (en) * | 2011-09-26 | 2017-08-08 | 中兴通讯股份有限公司 | path switching method and device |
| CN102694683B (en) * | 2012-05-22 | 2016-09-28 | 华为技术有限公司 | A kind of business reverse method, NM server and communication system |
| CN105656542B (en) * | 2013-02-27 | 2019-09-03 | 华为技术有限公司 | Pretection switch method, system and node |
| EP3537671A1 (en) * | 2013-02-27 | 2019-09-11 | Huawei Technologies Co., Ltd. | Protection switching method and system, and nodes |
| CN105337761B (en) * | 2015-09-24 | 2018-06-15 | 烽火通信科技股份有限公司 | Optimal Protection path selection method and endpoint device between a kind of more Protection paths |
| CN105279940A (en) * | 2015-12-01 | 2016-01-27 | 广州碧德电子科技有限公司 | Monitoring network networking method based on low-power Bluetooth |
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