CN102055545A - Method and device for analyzing reliability of synchronous digital system network - Google Patents
Method and device for analyzing reliability of synchronous digital system network Download PDFInfo
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Abstract
The embodiment of the invention relates to a method and a device for analyzing the reliability of a synchronous digital system network. A microwave service data transmitting method comprises: establishing a network model of the synchronous digital system network to be analyzed; receiving an fault parameter input; generating a fault corresponding to fault parameters in the network model; searching from a service source port to a destination port in the network model in which the fault is generated; and when determining that the service destination port cannot be found in the service source port, giving an alarm for protecting the link in which the fault is generated. Compared with the prior art, the method and the device establish a network model corresponding to an actual network according to the data information in the network, so as to input the network fault in the network model and give an alarm when determining the network existence of the network model is undesirable; and thus, the reliability of the network is improved.
Description
Technical field
The present invention relates to digital communication technology field, particularly a kind of method and device of analyzing the synchronous digital system network reliability.
Background technology
So-called SDH (Synchronous Digital Hierarchy) (Synchronous Digital Hierarchy, be called for short SDH (Synchronous Digital Hierarchy)) be meant multiple connection, circuit transmission and function of exchange are combined together, and transmit network by the integrated information of united net management system operation, be a kind of Synchronous Optical Network technology that U.S.'s Bel's Research on Communication Technology is put forward.It can realize that network is effectively managed, real time business is monitored, dynamic network is safeguarded, the multinomial functions such as intercommunication of different vendor's equipment room, network resource utilization be can improve greatly, reduce administrative and maintenance expense, flexibility and reliability and the network operation efficiently and maintenance realized, therefore be the development of world today's message area aspect transmission technology and the focus of application, be subjected to people's extensive attention.
The inventor finds that in realizing process of the present invention the defective that exists in the prior art is: because NE quantity exceedes thousand in the synchronous digital system network; the business of transmission reaches tens thousand of; the interconnection that exists is close to hundreds thousand of; so the protection subnetwork type is various in so huge network; the route span is big; repeatedly dilatation and business reorganization have been passed through; make the network form become intricate; in case in the network break down in the somewhere; may there be bigger influence surface; promptly can influence the business that transmit many places in network, make professional transmission be affected, thereby greatly reduce the reliability of network.
In order to improve the reliability of network; analyze the potential safety hazard in the network in advance; the engineer travels through the existing network business and supposes that fault takes place by the mode of craft in the prior art in webmastering software; the engineer judges rule of thumb whether the business through abort situation can successfully be communicated with its set place by its set source, various protections back subsequently; all business are carried out such judgement repeatedly; finally draw a kind of influence surface of fault; again to various fault traversal; finally judge network security hidden danger position; this method needs the senior engineer who is familiar with very much synchronous digital system network to finish; and the cycle is oversize; often need the several months just can reach a conclusion; not only time-consuming; effort; make mistakes easily; and high to personnel's technical ability requirement, those of ordinary skill also can't be competent at, and the particularly last result who draws neither be very accurate.Also come the monitoring network fault to determine the fault occurrence positions in the prior art, but this can only help to find out the fault point rapidly, and can not just find out the potential safety hazard that network exists in advance by alarm software.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method and device of analyzing the synchronous digital system network reliability, the method of this analysis synchronous digital system network reliability and device can be analyzed the survivability of the business of transmitting in the network when network failure takes place in the synchronous digital system network of simulation, promptly when network failure takes place, judge whether the business of transmitting in the network still can transfer to set place from set source, make operator to formulate the scheme of optimizing the actual synchronization digital system network according to the result who analyzes.
In order to realize the foregoing invention purpose, the embodiment of the invention provides a kind of method of analyzing the synchronous digital system network reliability, and described method comprises:
Set up the network model of synchronous digital system network to be analyzed;
The input of reception fault parameter;
In described network model, generate fault corresponding to described fault parameter;
Search for to professional place port from professional source port in the network model after described generation fault;
When confirming can not be when described service source port searches professional place port, the alarm that generation need be protected the link of described guilty culprit.
The embodiment of the invention also provides a kind of device of analyzing the synchronous digital system network reliability, comprising:
The modelling unit is used to set up the network model of synchronous digital system network to be analyzed;
The fault generation unit is used to receive the fault parameter input; In described network model, generate fault corresponding to described fault parameter;
Search unit, the network model that is used for after described generation fault is searched for to professional place port from professional source port;
Alarm Unit is used for when confirm can not be when described service source port searches professional place port, the alarm that generation need be protected the link of described guilty culprit.
The beneficial effect of the embodiment of the invention is, set up should the network of network model according to the data message in the real network, thereby fan-in network fault in this network model, and analyze professional survival state in the described network according to the network model of network failure, based on this and then can judge the survivability of the business transmission of the corresponding real network of this network model, and when confirming that network survivability is bad, send alarm, thereby improved the reliability of network.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment 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 the FB(flow block) of the analysis synchronous digital system network reliability method of the embodiment of the invention one.
Fig. 2 is the FB(flow block) of the analysis synchronous digital system network reliability method of the embodiment of the invention two.
Fig. 3 is the FB(flow block) of operable search rule in the above embodiment of the present invention.
Fig. 4 is the structural representation of a multiplex section ring in the network model.
Fig. 5 is the structural representation of a no multiplex section protection chain in the network model.
Fig. 6 is structural representation that the multiplex section protection chain is arranged in the network model.
Fig. 7 comprises that a subnet connects the structural representation of the network model of guard ring.
A kind of structure chart of analyzing the device of synchronous digital system network reliability that Fig. 8 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is 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.
The embodiment of the invention is a kind of analysis synchronous digital system network technology of dependability, this technology is analyzed the related objective business by the fault state of real network could transfer to set place from set source, target service can transfer to set place from set source if the back takes place fault, illustrate in this network that professional survival ability is stronger, on the contrary then a little less than.
At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
Embodiment one
As shown in Figure 1, Fig. 1 is the FB(flow block) of the analysis synchronous digital system network reliability method of the embodiment of the invention, and this method comprises the steps:
S101. set up the network model of synchronous digital system network to be analyzed;
In this step, network management system is set up the network model of synchronous digital system network to be analyzed.
Can also comprise S102 behind the step S101:
The sign of each port in the described network model of S 102. records, the sign of described port is identical with the sign of actual port in the corresponding synchronous digital system network described to be analyzed of port;
In this step, network management system writes down the sign of each port in the described network model, and the sign of described port is identical with the sign of actual port in the corresponding synchronous digital system network described to be analyzed of port.
103. receive the fault parameter input;
In this step, network management system receives the fault parameter input.
Described fault parameter can comprise one or more in the following fault: the single board default of fiber failure, network element failure, connection optical fiber.
104. in described network model, generate fault corresponding to described fault parameter;
In this step, network management system generates the fault corresponding to described fault parameter in described network model.
When described fault occurs on the multiplex section link of MSP-ring, described generation can comprise corresponding to the fault of fault parameter: when described fault parameter comprises fiber failure, fiber failure is changed into the multiplex section link failure that is carried on this optical fiber; When described fault parameter comprises network element failure, network element failure is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber; When described fault parameter comprises the single board default that connects optical fiber, the single board default that connects optical fiber is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber.
105. search for to professional place port from professional source port in the network model after described generation fault;
In this step, search for to professional place port from professional source port in the network model of network management system after described generation fault.
Occur in when described fault on the link of no multiplex section protection and SNCP, this step comprises: initiate search from professional source port to professional place port in described network model; After searching a port, in the time of can't searching the next port of this port again, whether the sign of judging the port that this final search arrives is identical with the sign of professional place port, if inequality, then confirm and can not search professional place port from described service source port.
When described fault has occurred in MSP-ring, on the multiplex section link of no SNCP, this step comprises:
To there being the multiplex section link configuration multiplex section protection parameter of fault, described multiplex section protection parameter comprises bridge joint search index, break-through search index, switches search index;
Search for to professional place port from professional source port, carry out bridge joint action in the port of preserving the bridge joint search index, carry out the break-through action in the port of preserving the break-through search index, carry out switching action preserving the port of switching search index;
After searching a port, in the time of can't searching the next port of this port again, whether the sign of judging the port that this final search arrives is identical with the sign of professional place port, if inequality, then confirm and can not search professional place port from described service source port.
When described fault occurs on the link of SNCP; search for to professional place port from professional source port; when searching the original position of SNCP; need to search for to work branch and protection branch respectively; all may there be multiplex section protective ring or chain in work branch and the protection branch, all may have another nested SNCP.When search is on multiplex section protective ring, if fault is arranged, then need carry out bridge joint action in the port of preserving the bridge joint search index, carry out the break-through action in the port of preserving the break-through search index, carry out switching action preserving the port of switching search index; When search is on nested SNCP; need equally to search for to protection branch and work branch respectively; and the like; the all possible path that SNCP need be formed all search finishes; multiplex section protection index in all paths is all finished using; after final all possible path is all searched for and is finished; whether the sign of judging the port that each road branch searches is identical with the sign of professional place port; if it is all inequality; then confirm and to search professional place port from described service source port, otherwise think and to search professional place port from described service source port.
106. when confirming can not be when described service source port searches professional place port, the alarm that generation need be protected the link of described guilty culprit.
In this step, when confirming can not be when described service source port searches professional place port, network management system generates the alarm that need protect the link of described guilty culprit.
Gao Jing form can be herein, and writing down this business will interrupt, and shows to the user, whether it is strengthened protection by user's decision.
The method of analyzing the synchronous digital system network reliability in the embodiment of the invention is by realizing on the network model of an actual synchronization digital system network; setting up this network model can be by obtaining the data message in the actual synchronization digital system network; such as the interconnection information in the optical fiber information, multiplex section link information (be the multiplex section link information, the multiplex section full name is a multiplex section for Multiplex Section), business information, protection subnet information and the network element that obtain by standard data interface in the synchronous digital system network.Wherein comprise corresponding source information and place information in the business information, it is the source id information (being the NE ID-slot number-port numbers-higher order path-low order channel in source) in the actual synchronization digital system network, place id information (being the NE ID-slot number-port numbers-higher order path-low order channel of place), wherein source id information and place id information can be used for accurately reflecting the position attribution of actual synchronization digital system network Zhong Yuan and place.Get access to the network model that just can set up corresponding described network configuration after these network data information, the interconnection information in the optical fiber information that is about to get access to, multiplex section link information, business information, protection subnet information and the network element plays corresponding relation according to the network layer modelling.Such as determining the position of source in network model by the source id information, this position promptly goes out the position attribution in source by data description, it is the NE ID-slot number-port numbers-higher order path-low order channel at place, source, the structure that can truly reflect the actual synchronization digital system network by this method, the relation in the actual synchronization digital system network between each network datas such as path of professional transmission.
When network model set up good after storage set up the network model finish, note all professional source information and place information in this network model simultaneously, wherein said source information comprises the intersection source information that sends the last service point of professional source network element position in the corresponding actual synchronization digital system network, and described place information comprises the intersection place information that receives the following service point of professional place network element position in the corresponding actual synchronization digital system network.In described network model after the analog network fault, analyze professional survival state in the described network according to the network model of analog network fault.So-called professional survival state is meant that promptly business business when network breaks down is transferred to the ability that receives a professional end from sending a professional end, business can't be transferred to set place from set source if the back takes place network failure, and is then should the survival ability of business when the corresponding network fault takes place relatively poor; Otherwise it is, then should the survival ability of business when the corresponding network fault takes place better if network failure takes place that the back is professional still can be transferred to set place from set source.So in order to assess the professional survival state in the described synchronous digital system network, analog network fault in network model, thereby reach the scene that breaks down of simulation synchronous digital system network, can analyze professional survival state in the described network according to described network model.
The advantage of the embodiment of the invention is, set up should the network of network model according to the data message in the real network, thereby fan-in network fault in this network model, and analyze professional survival state in the described network according to the network model of network failure, based on this and then can judge the survivability of the business transmission of the corresponding real network of this network model, and when confirming that network survivability is bad, send alarm, thereby improved the reliability of network.
Embodiment two
The embodiment of the invention is elaborated to analyzing the synchronous digital system network reliability method with embodiment one basis, as shown in Figure 2, Fig. 2 is the FB(flow block) of the analysis synchronous digital system network reliability method of the embodiment of the invention, and this method comprises the steps:
201. obtain the data message of synchronous digital system network to be analyzed.
Synchronous digital system network in the present embodiment has MSP-ring.
Owing to analyze the method for synchronous digital system network reliability in the embodiment of the invention also is to realize by the network model of a simulation actual synchronization digital system network; the basis of setting up this network model is to obtain the data message in the actual synchronization digital system network; can obtain multiplex section link information (Multiplex Section link information, multiplex section link information) in the synchronous digital system network such as network management system by synchronous digital system network server standard data interface; business information; interconnection information in protection subnet information and the network element.
Wherein the multiplex section link information comprises: multiplex section link source end dot information (source endpoint place NE ID, slot number, port numbers, higher order path, low order channel), multiplex section link place terminal point information (Su Duandian place NE ID, slot number, port numbers, higher order path, low order channel);
Business information comprises: the source NE ID of professional process, source veneer, groove position, source, source port, source higher order path, source low order channel, place network element, place veneer, groove position, place, place port, place higher order path and place low order channel, professional transmission rate rank;
The protection subnet information comprises: protection subnet class information, and promptly multiplex section protection subnet rank comprises STM-2 (Synchronize Transport Module Synchronous Transport Module level-N is called for short STM) all even number ranks to STM-256; Protection subnetwork type information promptly comprises two fibre two-way multi-section shared protection rings, the unidirectional multiplex section protective ring of two fibre, four-fiber bidirectional multiplex section protective ring, 1+1 linear multiplex section protection, 1:N linear multiplex section protection; The sign of the multiplex section link that takies, work are used time slot mark with time slot mark and protection;
Interconnection in the network element (Cross Connection) information comprises: network element ID, source veneer sign, source groove bit-identify, source port sign, source higher order path sign, source low order channel sign, place network element ID, place veneer sign, place groove bit-identify, place port-mark, place higher order path sign, place low order channel sign, speed rank and the type of intersecting that interconnection is affiliated, the type of wherein intersecting comprise a source one night intersection or two source one night intersections.
202. set up the network model of described synchronous digital system network to be analyzed according to described data message.
Data message in the synchronous digital system network that network management system gets access to according to step 201 in this step is set up the network model of corresponding described synchronous digital system network framework.Interconnection information in optical fiber information, multiplex section link information, business information, protection subnet information and the network element is set up corresponding relation according to synchronous digital system network to be analyzed, and the whole corresponding relation set of make setting up forms the network model of corresponding described synchronous digital system network to be analyzed.Just can learn multiplex section link source end message breath (source port place NE ID, slot number, port numbers), the place port information (port place, place NE ID, slot number, port numbers) of related service process in the real network easily by business information according to this network model; and can learn the optical fiber information of relevant multiplex section link process in the real network and the protection subnet information of multiplex section link bearer by obtaining the multiplex section link information; what the two ends of optical fiber connected is network element, thereby can obtain the interconnection information of the network element internal of route process.
The interconnection information that gets access to according to step 201 is promptly known the annexation of the source port and the place port of network element internal in the real network, according to the corresponding relation between the corresponding port in the network element of this annexation generation network model, promptly generate the relation of pointing to the intersection place port of corresponding described place from the intersection source port of the described source port of correspondence in described network model, this pass ties up to can be used for the transmission direction of real network corresponding service in network element in the network model; The ID that be designated in this intersection source network element corresponding described network source of wherein said intersection source port in network model: NE ID-slot number-port numbers-higher order path-low order channel; The ID that be designated in this intersection place port corresponding described network place of described intersection place port in network model: NE ID-slot number-port numbers-higher order path-low order channel;
Promptly know the annexation between the network element in the real network according to the multiplex section link information that step 201 gets access to, generate the corresponding relation between the respective network elements in the network model according to this annexation, promptly generate the relation of pointing to the link place network element of corresponding described multiplex section link place from the link source network element in corresponding multiplex section link source in described network model, this pass ties up to and can be used for simulating the transmission direction of real network corresponding service on the multiplex section link in the network model.Wherein said link source end mouth is designated the ID in multiplex section link source in the corresponding described network of this link source end mouth: NE ID-slot number-port numbers; Described link place network element ID is the ID of multiplex section link place in the corresponding described network of this link place network element: NE ID-slot number-port numbers.
The network model of simulation actual synchronization digital system network is just set up and is finished like this, can obtain related data information easily according to this network model.
203. write down the sign of each port in the described network model, the sign of described port is identical with the sign of actual port in the corresponding synchronous digital system network described to be analyzed of port.
In this step, network management system writes down the sign of each port in the described network model, and the sign of described port is identical with the sign of actual port in the corresponding synchronous digital system network described to be analyzed of port.
204. input fault parameter in described network model, the fault of the corresponding described fault parameter of generation in described network model.
In this step, network management system is the input fault parameter in described network model, generates the fault of corresponding described fault parameter in described network model.
The fault parameter of importing in this step can be the single board default of fiber failure, network element failure, connection optical fiber, fault parameter according to these inputs generates the network failure of corresponding described fault parameter in network model, thereby begins to simulate the situation that fault takes place in the real network.
Simple in the embodiment of the invention in order to make that fault becomes, be convenient to the processing of subsequent step, all convert the fault parameter of importing to the multiplex section link failure, thereby make the fault of the simulation in network model all be generated as corresponding multiplex section link failure.There is following several types in concrete transform mode:
1, fiber failure changes into the multiplex section link failure that is carried on this optical fiber;
2, network element failure changes into the fiber failure that is attached thereto, and the mode that is converted into the multiplex section link failure by the optical fiber in the 1st converts the multiplex section link failure to;
3, the single board default that connects optical fiber changes into the fiber failure that is attached thereto, and the mode that is converted into the multiplex section link failure by the optical fiber in the 1st converts the multiplex section link failure to;
4, for mixed fault input, promptly import the situation of several faults simultaneously, according to 1,2, the rule in 3 changes into a collection of multiplex section link failure.
If the fault multiplex section link bearer in the network model multiplex section protective ring or multiplex section protection link, then can also comprise step 205 after the step 204.
205. to the multiplex section link configuration multiplex section protection parameter that has fault on multiplex section protective ring or the multiplex section protection link.
In this step, network management system is to the multiplex section link configuration multiplex section protection parameter that has fault on multiplex section protective ring or the multiplex section protection link.
According to the subnet protection information that gets access to as can be known; the positional information of multiplex section protective ring that in the actual synchronization digital system network, is provided with or multiplex section protection link; these multiplex section protective rings or multiplex section protection link are when carrying their multiplex section link occurs fault; the service channel that will be in the multiplex section link on the multiplex section protective ring or be in the multiplex section link on the multiplex section protection link switches in the protection passage; make the business of transmitting not be subjected to the influence of fault multiplex section link; continue transport service by the protection passage, thus a kind of protection mode of protection synchronous digital system network fail safe.
The multiplex section link is that this link data connects corresponding network element by the link data with multiplex section link attribute of multiplex section link data parametric description in network model, the relation of corresponding multiplex section link in network model.So when there is the multiplex section link failure in network model; promptly on the multiplex section link of certain section actual multiplex section link of correspondence, fault is set; when on the multiplex section link of this multiplex section link correspondence multiplex section protective ring or multiplex section protection link being arranged; also promptly have the multiplex section protection data on this multiplex section link, thus according to these multiplex section protection data to multiplex section link configuration multiplex section protection parameter.
Promptly be to the multiplex section protection of fault multiplex section link in the simulation real network to multiplex section faulty link configuration multiplex section protection parameter in this step; multiplex section protection in real network comprises the bridge joint action protection, switching action protection and break-through action protection.So multiplex section faulty link configuration multiplex section protection parameter is comprised multiplex section protective ring or multiplex section protection link configuration bridge joint search index to multiplex section faulty link place in this step, switches search index and break-through search index;
Wherein, the bridge joint search index is expressed as: in the multiplex section protection subnet; cause the action of multiplex section protection subnet bridge joint when breaking down after; the bridge joint action will take place in the position, top that has two multiplex section links in the protection subnet; the final position of bridge joint action original position and bridge joint action will form a kind of corresponding relation; this corresponding relation points to network element, veneer, port, the higher order path at bridge joint final position place from the network element at bridge joint original position place, veneer, port, higher order path, claims that such corresponding relation is the bridge joint search index.The bridge joint search index is kept at the network element at bridge joint original position place, and this network element is called the bridge joint network element.
Switching search index is expressed as: in the multiplex section protection subnet; cause the switching action of multiplex section protection subnet when breaking down after; switching action will take place in the terminal location that has two multiplex section links in the multiplex section protection subnet; the final position of switching action original position and switching action will form a kind of corresponding relation; this corresponding relation points to network element, veneer, port, the higher order path at switching action final position place from the network element at switching action original position place, veneer, port, higher order path, claims such corresponding relation for switching search index.Switch the network element that search index is kept at switching action original position place, this network element is called switches network element.
The break-through search index is expressed as: in the multiplex section protection subnet; cause the action of multiplex section protection subnet bridge joint when breaking down after; the break-through action does not take place will take place on the network element of bridge joint switching action; the network element at place, position of going out from the network element at place, signal in-position to signal will form a kind of corresponding relation; network element, veneer, port, higher order path that the network element that this corresponding relation enters from signal, veneer, port, higher order path directional signal are gone out claim that such corresponding relation is the break-through index.The break-through index is kept at the network element at place, signal in-position in the break-through action, and this network element is called the break-through network element.
According to the function of above index if in network model the corresponding index of configuration on corresponding source network element and the place network element; and on the network element between source network element and the place network element, also dispose corresponding index; follow-up search can be directed to the place network element from the source network element, thus the strategy of the protection service signal in the real network.
Need to prove,, then will not carry out the foundation of multiplex section protection index on this multiplex section link if the fault multiplex section link in the network model does not have load multiplexing segment protect ring.
206. in described network model, search for to professional Su Faqi from described service source.
In this step, network management system is searched for to professional Su Faqi from described service source in described network model.
The both port of origination of search all is the service source port, these service source port correspondence the service source in the real network, promptly represent to send business information from service source in the real network, because just analog service transmission in the network model, so must set up the search rule of the professional transmission of a cover simulation, because the business in the real network is to pass to a set professional place from a set service source, searches professional place port so the search rule in the embodiment of the invention is meant the rule by the analog service transmission from a service source port.Because each network element can only be the bridge joint network element, switch a kind of in network element or the break-through network element, and all preserve the search index that points to another network element on every kind of network element, since a network element search, the next network element of search is exactly a search index network element pointed.
207. branch to all search; can't search next port and be when searching a port; the sign of the port that final search arrives lived in record; these signs are designated as S set; each bar business all has the S set of oneself; if business is not subjected to SNCP, then only has a port-mark among the S.
For all search branches, in the time of on the port that searches, can't continuing to search for, then this final search to port on stop the search of current branch, and note the port-mark that final search arrives, add in the S set.
208. judge the sign that whether exists in the S set with described professional Su Xiangtong, if there is no, then send alarm to the user, the prompting user protects faulty link.
Compare with the set place of described business one by one for the sign in the S set; if it is all inequality; after illustrating that then fault takes place; the set source of described business can't arrive the set place of described business; the professional relatively poor survivability that shows under user-defined fault parameter is described, can sends the alarm prompt user this moment and can select to strengthen protection.
In order to clearly demonstrate the described method of the embodiment of the invention, the example that below exemplifies the method for analyzing the synchronous digital system network reliability is elaborated.
As shown in Figure 3, Fig. 3 is the FB(flow block) of operable search rule in the above embodiment of the present invention, comprises the steps:
S301, begin to carry out interconnection search, if search is then changeed S312 less than the interconnection place port that has the interconnection relation with this interconnection source port, if can search out then forward S302 to from interconnection source end.
S302, intersect place port and protection for work and intersect the place port and carry out following search respectively.Owing to there is the position of SNCP, can search two intersection place ports from the intersection source, one of them is called the work place, another is called the protection place, and carries out following search respectively.
Whether S303, search exist the bridge joint index, if there is no, then change S304; If exist, then change step S306;
S304, carry out link and connect search, if can search with interconnection place port by the link-attached interconnection source port of multiplex section, then change S305, if can not search the link connection place port that is connected with interconnection place port, then forward S312 to;
S305, judge the multiplex section link fault whether that is used to connect interconnection place port and interconnection source port among the S304,, jump to step S301,, then forward S312 to if fault is arranged if there is not fault;
S306, use bridge joint index forward a link to and connect source port;
S307, carry out link and connect search, arrive link and connect the place port;
S308, judge whether to exist the break-through index,, then carry out step S309 otherwise forward step S311 to if there is the break-through index;
S309, use break-through index arrive multiplex section link source end mouth;
S310, carry out link and connect search, arrive, forward S308 to a section link place port.
Here need to specify, forward step S308 herein to, what represent is the judgement of proceeding whether to exist another break-through index, if there is another break-through index, then can use this another break-through index, reach the source port of another multiplex section link, circulation successively, and be not that expression all can be used same break-through index at every turn;
Index is switched in S311, use, and the low-order and high-order splicing interconnection source port of formation after the multiplex section link port with business forwards step S301 to.
The port-mark that S312, record final search arrive, and in the S set with its adding current business, the final port-mark that all branches of each bar business search all needs to add in the S set.
Fig. 4 is the structural representation of a multiplex section ring in the network model, described multiplex section ring is made up of 4 network elements, be respectively network element A, network element B, network element C and network element D, connect by the multiplex section link between the network element, the fault parameter of input is multiplex section AB link failure (shown in a fork among Fig. 4).
Suppose scene 1: do not have load multiplexing segment protect ring or multiplex section protection link on the link at assumed fault place; The service source port is the port A5 among the network element A, and professional place port is the port C5 among the network element C.Sign on the port A5 before the search beginning among the record network element A and the sign of the port C5 among the network element C.
After the search beginning; on port A5, find the interconnection corresponding relation; promptly there is cross-coupled place port A7 among this network element A; search port A7 according to this interconnection corresponding relation from port A5; because the service aisle fault (multiplex section link failure) between port A7 and the network element B middle port B12; and there is not the multiplex section protection index on the port A7; so this searches for end; the sign of record port A7; and the sign of port A7 and the sign of the port C5 among the network element C compared; obtain the inconsistent result of sign; thereby draw this multiplex section ring when the AB link failure takes place, business can not be transferred to set professional place port C5 from set service source A5, so will strengthen the protection of this guilty culprit link; such as multiplex section protective ring being set for this link, the protection passage is set between each network element promptly.
Suppose scene 2: load multiplexing segment protect ring on the link at assumed fault place; there is the protection passage between each network element; sign on the port A5 before the search beginning among the record network element A and the sign of the port C5 among the network element C, and set up search index at the place, corresponding port, with guiding search.Because A7 is the source port of one-way only operation link, A12 is the source port of unidirectional protection link, so set up the bridge joint search index at port A7 place, is used for search index to port A12; Because the multiplex section link that is connected with network element C, D does not all have fault, so between port D7 and port D12, set up the break-through search index, between port C7 and port C12, set up the break-through search index, be used for guiding search along protecting passage to next port; Because B12 is the source port of unidirectional protection link, the multiplex section link failure between B12 and the A7 so search index is switched in foundation at port B12 place, is used for search index to port B7.
After search index is set up; the search beginning; on port A5, find the interconnection corresponding relation; promptly there is cross-coupled place port A7 among this network element A; search port A7 according to this interconnection corresponding relation from port A5; because the service aisle fault (MS link failure) between port A7 and the network element B middle port B12; so port A7 by the bridge joint search index with search index to port A12; be equivalent in the real network on port A7 with business after service aisle switches to the protection passage transport service to port A12; owing between port A12 and the port D7 multiplex section link is arranged; by link connect the corresponding relation guiding search from port A12 to port D7; on the D7 by the break-through search index with search index to D12; search connects corresponding relation at D12 by link and is directed on the C7; on the C7 by the break-through search index with search index to C12; search connects corresponding relation at C12 by link and is directed on the B7; searching on the port B12 from port B7 by the interconnection corresponding relation; on B12, search is switched to B7 by switching search index; promptly simulate in the real network on port B12 with business after the protection passage switches to service aisle transport service to port B7; search connects corresponding relation at the B7 place by link and is directed on the C12; be directed on the C5 by the interconnection corresponding relation in search on the C12; on C5, can't search next port again; so write down the sign of C5 this moment; and the sign that will write down and professional place sign compares; obtain identical result; thereby illustrate that this multiplex section ring is by behind the multiplex section protection in the actual synchronization digital system network; business has survival ability preferably, can transfer to set professional place from set service source.
Fig. 5 is unprotect structural representation in the network model, Fig. 6 is multiplex section link protection structural representation in the network model, all be by network element A, network element B and network element C, connect by the multiplex section link between the network element, the fault parameter of input is the link failure (as in Fig. 5, Fig. 6 mark fork shown in) of multiplex section A to B middle port P1 to port P2;
Suppose scene 1: as shown in Figure 5, do not have load multiplexing segment protect link on the link of guilty culprit; The service source port is the port P0 among the network element A, and professional place port is the port P5 among the network element C.Sign on the port P0 before the search beginning among the record network element A and the sign of the port P5 among the network element C.
After the search beginning; according to search rule; on port P0, find the interconnection corresponding relation; promptly there is cross-coupled place port P1 among this network element A; search port P1 according to this interconnection corresponding relation from port P0; because the service aisle fault (multiplex section link failure) between port P1 and the network element B middle port P2; and there is not search index on the port P1; so this searches for end; the sign of record port P1; and the sign of port P1 and the sign of the port P5 among the network element C compared; obtain the inconsistent result of sign, thereby draw this multiplex section ring when the AB link failure takes place, business can not be transferred to set professional place P5 from set service source P0; webmaster generates the alarm that need protect the link of described guilty culprit, notifies the user to strengthen the protection of guilty culprit link.
Suppose scene 2: as shown in Figure 6, load multiplexing segment protect link on the link of guilty culprit; After the protection link is set on the link to this multiplex section place; be provided with the protection passage between each network element; in network model, be described as protecting passage by modeling data; when the search beginning; according to search rule; on port P0, find the interconnection corresponding relation; promptly exist cross-coupled place port promptly to have cross-coupled place port P1 among this network element A among this network element A; search port P1 according to this interconnection corresponding relation from port P0; because the service aisle fault (being the multiplex section link failure) between port P1 and the network element B middle port P2; because multiplex section link failure; and set up the bridge joint index on this multiplex section link and switched index; so arrive P6 by the bridge joint index between P0 and the P6 with search index this moment; search the P7 of B network element then through the multiplex section link; through the index of switching between P7 and the P2 search index is arrived P2 again; next search P3 from P2; search P4 from P3; search P5 from P4; P5 can't continue search; then the sign of P5 lived in record; and the sign that will write down and professional place sign compares; obtain identical result; explanation in the actual synchronization digital system network this multiplex section by after the multiplex section link protection; business has survival ability preferably, and business can be from set service source port transmission to set professional place port.
The network model that comprises a subnet connection guard ring shown in Figure 7; wherein ABCD itself is a multiplex section protective ring; with port G7 as the service source port; port E6 is as professional place port; from port G7 through ABCD place multiplex section protective ring to the branch of port E6 as work branch, from port G7 through network element F to the branch of port E6 as protection branch.Begin search from the G7 port, need to search for to protection branch and work branch respectively.Because in the multiplex section protective ring among Fig. 7; need be from port D7 to port B12 through network element A to the multiplex section link the network element B or network element C to the multiplex section link the network element B; network element A breaks down to the multiplex section link between the network element B to multiplex section link between the network element B and network element C as shown in Figure 6; so can not search port B12, so can not search the E6 port through work branch from the G7 port from port D7.And because protection branch does not have fault; along G7 port process G9 port; F5 port, F7 port search the E9 port; the E6 port; this moment, the E6 port was last port that can search along protection branch; the sign of judging the port that this final search arrives is identical with the sign of professional place port, then confirms and can search professional place port from professional source port.
Fig. 8 is a kind of structure chart of analyzing the device of synchronous digital system network reliability that the embodiment of the invention provides, and comprising:
The device of the analysis synchronous digital system network reliability of Fig. 8 can also comprise:
At this moment, described search unit 805 specifically is used for: when described fault occurs on the link of no multiplex section protection and SNCP, initiate search from professional source port to professional place port in described network model; After searching a port, in the time of can't searching the next port of this port again, whether the sign of judging the port that this final search arrives is identical with the sign of professional place port, if inequality, then confirm and can not search professional place port from described service source port.
The device of the analysis synchronous digital system network reliability of the embodiment of the invention can also comprise:
The fault conversion unit is used for when described fault parameter comprises fiber failure, fiber failure is changed into the multiplex section link failure that is carried on this optical fiber;
When described fault parameter comprises network element failure, network element failure is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber;
When described fault parameter comprises the single board default that connects optical fiber, the single board default that connects optical fiber is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber.
The beneficial effect of the embodiment of the invention is, set up should the network of network model according to the data message in the real network, thereby fan-in network fault in this network model, and analyze professional survival state in the described network according to the network model of network failure, based on this and then can judge the survivability of the business transmission of the corresponding real network of this network model, and when confirming that network survivability is bad, send alarm, thereby improved the reliability of network.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The explanation of last embodiment just is used for helping to understand method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a method of analyzing the synchronous digital system network reliability is characterized in that, described method comprises:
Set up the network model of synchronous digital system network to be analyzed;
The input of reception fault parameter;
In described network model, generate fault corresponding to described fault parameter;
Search for to professional place port from professional source port in the network model after described generation fault;
When confirming can not be when described service source port searches professional place port, the alarm that generation need be protected the link of described guilty culprit.
2. the method for claim 1 is characterized in that,
Described fault parameter comprises one or more in the following fault:
The single board default of fiber failure, network element failure, connection optical fiber.
3. method as claimed in claim 1 or 2 is characterized in that, described fault occurs on the link of no multiplex section protection and SNCP;
Also comprise behind the described network model of setting up synchronous digital system network to be analyzed:
Write down the sign of each port in the described network model, the sign of described port is identical with the sign of actual port in the corresponding synchronous digital system network described to be analyzed of port;
Describedly in network model, initiate search to professional place port and comprise from professional source port:
In described network model, initiate search to professional place port from professional source port;
After searching a port, in the time of can't searching the next port of this port again, whether the sign of judging the port that this final search arrives is identical with the sign of professional place port, if inequality, then confirm and can not search professional place port from described service source port.
4. method as claimed in claim 2 is characterized in that described fault has occurred in MSP-ring, on the multiplex section link of no SNCP;
Described generation comprises corresponding to the fault of fault parameter:
When described fault parameter comprises fiber failure, fiber failure is changed into the multiplex section link failure that is carried on this optical fiber;
When described fault parameter comprises network element failure, network element failure is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber;
When described fault parameter comprises the single board default that connects optical fiber, the single board default that connects optical fiber is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber.
5. method as claimed in claim 4 is characterized in that,
Also comprise behind the described network model of setting up synchronous digital system network to be analyzed:
Write down the sign of each port in the described network model, the sign of described port is identical with the sign of actual port in the corresponding synchronous digital system network described to be analyzed of port;
Describedly in network model, initiate search to professional place port and comprise from professional source port:
To there being the multiplex section link configuration multiplex section protection parameter of fault, described multiplex section protection parameter comprises bridge joint search index, break-through search index, switches search index;
Search for to professional place port from professional source port, carry out bridge joint action in the port of preserving the bridge joint search index, carry out the break-through action in the port of preserving the break-through search index, carry out switching action preserving the port of switching search index;
After searching a port, in the time of can't searching the next port of this port again, whether the sign of judging the port that this final search arrives is identical with the sign of professional place port, if inequality, then confirm and can not search professional place port from described service source port.
6. the method for claim 1 is characterized in that, described fault occurs on the link of SNCP; The described search to professional place port from professional source port in described network model comprises:
In described network model, search for to professional place port, when searching the original position of SNCP, search for to protection branch and work branch respectively from professional source port;
Described when confirming and can not send alarm to the user when described service source port searches professional place port, notify described user that the link protection of described guilty culprit is comprised:
When confirming from described service source port when described work branch and described protection branch all can't search described professional place port, to send alarm, notify described user that the link of described guilty culprit is protected to the user.
7. a device of analyzing the synchronous digital system network reliability is characterized in that, comprising:
The modelling unit is used to set up the network model of synchronous digital system network to be analyzed;
The fault generation unit is used to receive the fault parameter input; In described network model, generate fault corresponding to described fault parameter;
Search unit, the network model that is used for after described generation fault is searched for to professional place port from professional source port;
Alarm Unit is used for when confirm can not be when described service source port searches professional place port, the alarm that generation need be protected the link of described guilty culprit.
8. device as claimed in claim 7 is characterized in that, also comprises:
The identification record unit is used for writing down the sign of described each port of network model, and the sign of described port is identical with the sign of actual port in the corresponding synchronous digital system network described to be analyzed of port;
Described search unit specifically is used for: when described fault occurs on the link of no multiplex section protection and SNCP, initiate search from professional source port to professional place port in described network model; After searching a port, in the time of can't searching the next port of this port again, whether the sign of judging the port that this final search arrives is identical with the sign of professional place port, if inequality, then confirm and can not search professional place port from described service source port.
9. device as claimed in claim 7 is characterized in that, also comprises:
The fault conversion unit is used for when described fault parameter comprises fiber failure, fiber failure is changed into the multiplex section link failure that is carried on this optical fiber;
When described fault parameter comprises network element failure, network element failure is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber;
When described fault parameter comprises the single board default that connects optical fiber, the single board default that connects optical fiber is changed into the fiber failure that is attached thereto, again fiber failure is changed into the multiplex section link failure that is carried on this optical fiber.
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