CN105338435A - Virtual optical network cooperation mapping method and apparatus - Google Patents
Virtual optical network cooperation mapping method and apparatus Download PDFInfo
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Abstract
The invention discloses a virtual optical network cooperation mapping method. According to the characteristic attribute of the virtual nodes and the virtual links in a virtual optical network, the virtual optical network cooperation mapping method can perform mapping sequence division and classification, and can determine the mapping sequence of the virtual nodes and the virtual links, and can configure a standby path corresponding to each node in advance, and can construct a physical optical network mapping auxiliary graph for the preconfigured path based on each node, and can map the virtual links to the preconfigured path of the physical optical network according to the bandwidth requirement of the virtual links and can determine the transmission rate and the corresponding modulation format of the selected path, and then can distribute the corresponding bandwidth resource on the selected path until all the virtual nodes and the virtual links are mapped to the physical optical network so that the cooperation mapping process of the virtual optical network can be completed. The virtual optical network cooperation mapping method solves the problem about optimization of network resource mapped to the physical optical network by the virtual optical network.
Description
Technical field
the invention belongs to virtual optical network mapping techniques field, the virtual optical network relating to a kind of Virtual node and virtual link particularly works in coordination with mapping method and device.
Background technology
along with the fast development of cloud service and data center network, Internet service and Mobile solution service present enormous bandwidth growing trend, are just promoting optical network resource towards open with extensibility future development.Under large-scale network-estabilishing and multiple network technological incorporation, based on user to network bandwidth resources demand, and user is to the jurisdictions mandate of optical network resource flexible configuration and scheduling, optical-fiber network Intel Virtualization Technology and network function is virtual can meet the demand of user to bandwidth service, especially, the virtual of optical-fiber network solves efficiency of network resources and one of effective scheme of meeting consumers' demand.Virtual by optical-fiber network, optical-fiber network hardware resource and software resource can be carried out abstract, form the resource pool of network United Dispatching and distribution, the standard interface providing user to serve by the controlling functions plane of optical-fiber network and unified control protocol, user can according to self bandwidth resources demand to network, the virtualized scheduling mode of customized Internet resources, to realize integration and the optimization of Internet resources, for the resource efficiency improving network provides technical support.
by the resource virtualizing of optical-fiber network, ossifing of Resource Allocation in Networks process can be eliminated, improve network resource scheduling flexibility, promote the innovation of optical-fiber network architecture and application layer business, ensure efficiency of network resources optimization, solve the restricting relation of Internet resources finite capacity constraints and efficient network resource usage.But the core that optical-fiber network virtual will solve and key issue how virtual optical network are mapped in physics optical-fiber network, to ensure the service quality of network, and can ensure optical network resource utilance.Therefore, virtual optical network mapping techniques will become solution user to problems such as resource requirement, efficiency of network resources, QoSs.At present, for the resist technology of flexible spectrum optical-fiber network, the method mainly solved has following two classes:
1) dummy node priority mapping method.First, according to the feature request of dummy node, determine the preferential mapping order of dummy node, dummy node is mapped on the physical node of optical-fiber network; Secondly, according to the annexation between the Topology connection feature of virtual optical network and dummy node, for each virtual link sets up transmission path; Finally, according to the bandwidth demand of each virtual link, in mapped path, distribute corresponding bandwidth resources.This mapping method is fairly simple, be conducive to simplify virtual optical network be mapped in physics optical-fiber network; But this mapping method may cause the resource serious waste of optical-fiber network, be difficult to the resource utilization improving optical-fiber network.
2) virtual link priority mapping method.First, consider virtual link bandwidth demand properties, according to the bandwidth demand size of virtual link, determine the virtual link mapping order in virtual optical network; Secondly, based on the mapping order of virtual link, virtual link is mapped to one by one on the light transmission path of physics optical-fiber network, until all virtual links are mapped in physics optical-fiber network; Finally, according to the bandwidth demand of each virtual link, mapped light transmission path distributes corresponding bandwidth resources.But, this mapping method does not consider the attribute feature of dummy node in mapping process, only from the resource optimization angle of optical-fiber network, virtual optical network is mapped, lack and effective collaboratively to map is carried out to the dummy node of virtual optical network and virtual link.
above-mentioned two kinds of methods are mapped in physics optical-fiber network although can both solve virtual optical network well, but these two kinds of mapping methods are separated from each other dummy node and virtual link and map, lack the mutually collaborative mapping between dummy node and virtual link.Therefore, these two kinds of virtual optical network mapping methods are difficult to make Internet resources reach optimization.
Summary of the invention
for above-mentioned technical problem, the present invention seeks to: provide a kind of virtual optical network to work in coordination with mapping method and device, can effectively virtual optical network be mapped on physics optical-fiber network, and according to the virtual link of virtual optical network and the feature of dummy node, virtual link and dummy node associating are progressively expanded, until all dummy nodes and virtual link are all mapped in physics optical-fiber network, finally according to the bandwidth demand of each bar virtual link, corresponding bandwidth resources are distributed in physics optical-fiber network, thus solve the resource efficiency problem that virtual optical network is mapped to physics optical-fiber network, improve physics optical network resource efficiency.
technical scheme of the present invention is: a kind of virtual optical network works in coordination with mapping method, it is characterized in that, comprises the following steps:
s01: according to the demand for services attribute of virtual optical network and the dummy node of virtual optical network and the feature of virtual link, divide the sequence of mapping of dummy node and virtual link;
s02: according to the target requirement of virtual optical network, selects all nodes to pre-configured operating path, construction Ricoh network mapping auxiliary view in physics optical-fiber network;
s03: according to dummy node and virtual link sequence of mapping, judge whether dummy node and virtual link meet mapping condition, if meet described mapping condition, then virtual link and dummy node are mapped to constructed physics optical-fiber network to map in auxiliary view, otherwise the mapping of dummy node and virtual link failure;
s04: according to the bandwidth demand of virtual link, the path selecting virtual link to map in physics optical-fiber network, determine the configuration parameter in this path, then in configured path, corresponding bandwidth resources are distributed, if the bandwidth resources of distributing can meet the bandwidth demand of virtual link, the mapping success of virtual link, otherwise terminate virtual link mapping; Repeat step S03, until all dummy nodes and virtual link are mapped to physics optical-fiber network.
preferably, in described step S01, divide the sequence of mapping of virtual link according to the bandwidth demand size of virtual link, according to the sequence of mapping of the resource requirement size determination dummy node of virtual link sequence of mapping and dummy node.
preferably, calculate the alternative path group of all physical nodes, configure each node between beeline as physics optical-fiber network auxiliary view corresponding node to the weights of link, and be configured to the right operating path of this node.
preferably, described mapping condition comprises: in same virtual optical network, and different dummy nodes or virtual link can not be mapped in identical physical node or physical pathway simultaneously; The resource of dummy node demand is less than or equal to the resource that physical node provides; And virtual link is mapped to the bandwidth resources that physical pathway can provide abundance.
preferably, described configuration parameter comprises transmission rate and corresponding modulation format.
the invention also discloses a kind of virtual optical network and work in coordination with mapping device, comprising:
dummy node and virtual link sequence of mapping divide module, according to the map feature in virtual optical network, based on the resource requirement of dummy node and the bandwidth demand of virtual link, determine the sequence of mapping of dummy node and virtual link;
physics optical-fiber network maps auxiliary view and builds module, according to the target requirement of virtual optical network, selects all nodes to pre-configured operating path, construction Ricoh network mapping auxiliary view in physics optical-fiber network;
dummy node and virtual link work in coordination with mapping block, in virtual optical network mapping process, for the optimization aim that virtual optical network maps, adjustment dummy node and virtual link work in coordination with mapping policy, all dummy nodes and virtual link are mapped in physics optical-fiber network auxiliary view;
the physics light net resource distribution module of the bandwidth demand of Virtual link, the pre-configured operating path of physics optical-fiber network is mapped to according to virtual link, determine the configuration parameter in this path, available bandwidth resources are searched in this operating path, if meet the bandwidth demand of virtual link, virtual link is successfully established, otherwise virtual optical network is set up unsuccessfully.
preferably, described physics optical-fiber network maps auxiliary view and builds module by calculating the alternative path group of all physical nodes, configure each node between beeline as physics optical-fiber network auxiliary view corresponding node to the weights of link, and be configured to the right operating path of this node.
preferably, divide the sequence of mapping of virtual link according to the bandwidth demand size of virtual link, according to the sequence of mapping of the resource requirement size determination dummy node of virtual link sequence of mapping and dummy node.
preferably, described configuration parameter comprises transmission rate and corresponding modulation format.
preferably, also comprise virtual optical network and map judgement and alert module, when performing unsuccessfully for module or cannot perform, give a warning operation, controls whole device interrupt run.
compared with prior art, advantage of the present invention is:
1. according to the dummy node of virtual optical network and the base attribute of virtual link, the alternative path group that pre-configured all nodes are right in physics optical-fiber network, based on different targets, construction Ricoh network mapping auxiliary view, effectively can reduce the complexity of virtual optical network mapping process.Work in coordination with mapping method by virtual optical network, improve the resource utilization of physics optical-fiber network, the cost reducing physics optical-fiber network and energy consumption consumption, solve the resource allocation problem of physics optical-fiber network.
2. by calculating the alternative path group of all physical nodes, configure each node between beeline as physics optical-fiber network auxiliary view corresponding node to the weights of link, by configuring the weights of each node like this, the operating path that virtual link is mapped to physics optical-fiber network can be simplified.That can improve virtual optical network is mapped to power, makes virtual optical network in mapping process, keep best-fit state.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is the structured flowchart that virtual optical network of the present invention works in coordination with mapping device;
fig. 2 is the flow chart that virtual optical network of the present invention works in coordination with mapping method;
fig. 3 is the schematic diagram of the present invention's virtual optical network;
fig. 4 is the topology diagram of physics optical-fiber network of the present invention;
fig. 5 is the mapping auxiliary view that physics optical-fiber network of the present invention builds;
fig. 6 is the collaborative mapping schematic diagram of dummy node of the present invention and virtual link.
Embodiment
for making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
embodiment:
the present invention is mainly for virtual optical network mapping problems, according to the dummy node of virtual optical network and the base attribute of virtual link, the alternative path group that pre-configured all nodes are right in physics optical-fiber network, based on different targets, construction Ricoh network mapping auxiliary view, dummy node and virtual link is adopted to work in coordination with mapping method, virtual optical is mapped in physics optical-fiber network, and according to every bar virtual link bandwidth needs, select different transmission rates and modulation format, in physics optical-fiber network, distribute the bandwidth resources required for virtual link.
the present invention is realized by the collaborative mapping device of a kind of Virtual node and virtual link.As shown in Figure 1, this device comprises:
dummy node and virtual link sequence of mapping divide module 10, according to the map feature in virtual optical network, based on the resource requirement of dummy node and the bandwidth demand of virtual link, determine the sequence of mapping of dummy node and virtual link, to improve the resource efficiency that virtual optical network is mapped to physics optical-fiber network.
physics optical-fiber network maps auxiliary view and builds module 20, the target requirement of physics optical-fiber network is mapped to for virtual optical network, simplify the complexity that virtual optical network is mapped to physics optical-fiber network, the feature of demand is mapped according to virtual optical network, in physics optical-fiber network, all nodes are to pre-configured operating path, calculate the alternative path group of all physical nodes, configure each node between beeline as the weights configuration effort path of physics optical-fiber network auxiliary view corresponding node to link, and design meet virtual optical network map physics optical-fiber network auxiliary view.
dummy node and virtual link work in coordination with mapping block 30, in virtual optical network mapping process, mainly for the optimization aim that virtual optical network maps, carry out by this module the adjustment that dummy node and virtual link work in coordination with mapping policy, and all dummy nodes and virtual link are mapped in physics optical-fiber network auxiliary view.Be mapped to quickly and easily in physics optical-fiber network to realize virtual optical network, and can ensure that the resource efficiency of physics optical-fiber network reaches optimization.
the physics light net resource distribution module 40 of the bandwidth demand of Virtual link, be mapped in the pre-configured operating path of physics optical-fiber network according to virtual link, determine the transmission rate in this path and corresponding modulation format, available bandwidth resources are searched in this institute's configuration effort, if meet the bandwidth demand of virtual link, virtual link is successfully established, otherwise virtual optical network is set up unsuccessfully.
this device completes the collaborative mapping based on virtual optical network by the mutual cooperation between disparate modules, except above-mentioned module, apparatus of the present invention also comprise virtual optical network and map judgement and alert module 50, when making above-mentioned arbitrary module perform unsuccessfully or cannot perform, give a warning operation, control whole device interrupt run, to ensure that virtual optical network is mapped to physics optical-fiber network smoothly, thus solve the resource efficiency problem of virtual optical network mapping.
this device can the dummy node of each virtual optical network and link maps in physics optical-fiber network, the path distance in physics optical-fiber network can be mapped to by minimizing virtual link, improve the level of resources utilization of physics optical-fiber network, optimize mapping cost and the energy consumption consumption of virtual optical network.
this device realizes by the following method, and as shown in Figure 2, the method comprises the following steps:
read network topology and initialization network parameter S21;
receive virtual optical network S22;
according to the demand for services attribute of virtual optical network, according to the dummy node of virtual optical network and the feature of virtual link, divide the sequence of mapping S23 of dummy node and virtual link;
in physics optical-fiber network, configure the alternative path group S24 that all physical nodes are right, according to the target requirement of virtual optical network, in physics optical-fiber network, select all nodes to pre-configured operating path, construction Ricoh network mapping auxiliary view S25;
according to dummy node and virtual link sequence of mapping, dummy node and virtual link is adopted to work in coordination with mapping method, judge dummy node and whether the met mapping condition of virtual link, if meet mapping condition, then virtual link and dummy node can be mapped to constructed physics optical-fiber network and map S26 in auxiliary view, otherwise the mapping of dummy node and virtual link failure S27; Mapping condition comprises: in same virtual optical network, and different dummy nodes or virtual link can not be mapped in identical physical node or physical pathway simultaneously; The resource of dummy node demand is less than or equal to the resource that physical node provides; And virtual link is mapped to the bandwidth resources that physical pathway can provide abundance.
according to the bandwidth demand of virtual link, the path S28 selecting virtual link to map in physics optical-fiber network, and determine the transmission rate in this path and corresponding modulation format S29, then in institute's configuration path, corresponding bandwidth resources S210 is distributed, if the bandwidth resources of distributing can meet the bandwidth demand of virtual link, the mapping success S211 of virtual link, otherwise terminate virtual link mapping.
repeat above-mentioned steps until all dummy nodes and virtual link are mapped to physics optical-fiber network map auxiliary view, then virtual optical network is mapped to S212 in physics optical-fiber network, virtual optical network mapping tasks terminates.
be described below in conjunction with concrete example:
fig. 3 is the schematic diagram of a virtual network, in figure 3, dummy node 31 represents with octagon, A, B, C, D represent the dummy node numbering of virtual optical network respectively, digitized representation in dashed circle this dummy node demand number of resources 32(such as computational resource, storage resources etc., represents by dimensionless unit: # unit), each virtual link 33 is represented by dashed line, bandwidth demand between digitized representation on dotted line two different virtual nodes, represents with #Gbps.
fig. 4 is the topology diagram of physics optical-fiber network, and in the diagram, the physical node 42 of optical-fiber network represents by solid circles, and represents that physical node is numbered with 1,2,3,4,5,6; The number of resources 41 (# unit) that this physical node of digitized representation in the dashed circle adjacent with physical node provides; Solid line link between physical node represents optical fiber link 43, and the transmission range between digitized representation two physical nodes on their sides, unit is kilometer (km), and wherein each optical fiber link can provide available bandwidth resources.
below according to the collaborative mapping mechanism of virtual optical network of the present invention, set forth virtual optical network (as Fig. 3) and be mapped to the process that physics optical-fiber network maps auxiliary view (as Fig. 4).
the first, based on the bandwidth demand size of the virtual link of virtual optical network and the resource requirement size of dummy node, determine the sequence of mapping of virtual link and dummy node.Such as, in figure 3, the sequence of mapping of virtual link is divided according to the bandwidth demand granule size of virtual link, this sequence of mapping is (A, B), (B, C), (C, D), (D, A), because the bandwidth demand of these four virtual links is 300Gbps, 200Gbps, 100Gbps, 50Gbps respectively.
according to the sequence of mapping of virtual link sequence of mapping determination dummy node, this sequence of mapping is B, A, C, D, being described below of it: because in virtual link sequence, (A, B) first mapped, and the resource requirement of dummy node B is larger than the virtual resource demand of dummy node A, therefore, can determine that dummy node B has precedence over A node mapping; Secondly, in maps virtual link (B, C) process, because B node is determined mapping order, then time maps virtual link (B, C), maps virtual node C is only needed; And then time maps virtual link (C, D), because dummy node C is determined mapping order, then the dummy node that this virtual link maps is D; Finally, when maps virtual link (D, A), because dummy node D and A determines mapping order, do not need maps virtual node.
the second, consider that virtual optical network is mapped to the target property of physics optical-fiber network, construction Ricoh network mapping auxiliary view.As shown in Figure 4, it is by 6 physical nodes and 8 optical fiber link constituent Ricoh networks.By calculating the alternative path group of all physical nodes, configure each node between beeline as physics optical-fiber network auxiliary view corresponding node to the weights of link, by configuring the weights of each node like this, the operating path that virtual link is mapped to physics optical-fiber network can be simplified.Such as, in the diagram, the node of physics optical-fiber network is to 1 and 4, and by calculating the beeline between them, can find their corresponding shortest path 1-6-5-4, its transmission range is 2850km.By configure all nodes to the distance of shortest path as the node of homologue Ricoh network mapping auxiliary view to link metric, Fig. 4 can be built into physics optical-fiber network and map auxiliary view, physics optical-fiber network maps auxiliary view as shown in Figure 5.In Figure 5, any node right physical link representative in physics optical-fiber network this node to corresponding shortest path, when virtual link be mapped to this physics optical-fiber network map arbitrary physical link of auxiliary view time, in physics optical-fiber network, have a pre-configured path at least and its is corresponding.
3rd, according to dummy node and virtual link mapping order, virtual link sequence of mapping is (A, B), (B, C), (C, D), (D, A), and the sequence that dummy node maps is B, A, C, D.In Figure 5, all dummy nodes and virtual link are mapped to being described below of physics optical-fiber network auxiliary view:
1) maps virtual link (A, B).Because the order of dummy node mapping is by B to A, wherein the demand resource of dummy node B and A is 20 and 15 units, needs the shortest physical link 1-2 (700km) finding virtual link (A, B) to map.According to the Resource Properties that resource requirement and the physical node of dummy node provide, namely the resource requirement of dummy node must be less than the resource that physical node provides, adopt larger dummy node resource requirement to be mapped to larger physical node and resource mapping principle is provided, can dummy node B and A be mapped on physical node 2 and 1 respectively, because the resource that physical node 2 and 1 provides is 85 and 60 units respectively, complete virtual link (A like this, B) physics chain (1 is mapped to, 2) in, as the mark I of Fig. 6.
2) maps virtual link (B, C), because dummy node B is mapped, need with dummy node physical node that B is mapped to 2 for start node, find out a most short chain road 2-6, the distance of its transmission is 900km, because the resource of physical node provides (55 units) to be greater than required 25 units of dummy node, then can dummy node C be mapped on physical node 6, like this virtual link (B, C) physical link 2-6 is mapped to, as the mark II of Fig. 6.
3) maps virtual link (C, D), because dummy node C has been mapped on physical node 6, similar virtual link (B, C) mapping, this virtual link (C, D) is mapped on physical link 6-5, as the mark III of Fig. 6, dummy node D is mapped on physical node 5.
4) maps virtual link (D, A), maps auxiliary view because all dummy nodes are all mapped to physics optical-fiber network, according to the connectedness of virtual optical network, can this virtual link (D, A) be mapped on physical link 5-1, the mark IV of Fig. 6.
4th, according to the bandwidth demand of virtual link, be mapped at all virtual links and pre-configured path corresponding to physics optical-fiber network search and distributes available bandwidth resources.Such as, virtual link (A, D) is mapped to physical link 1-5 (Fig. 6), this physical link be in the diagram corresponding to the pre-configured path 1-6-5 that is somebody's turn to do.Transmission 300Gbps business according to the bandwidth resources of virtual link demand, select corresponding transmission rate and determine corresponding modulation format, if search corresponding bandwidth resources in pre-configured path 1-6-5, then this virtual link (A, D) can be mapped in physics optical-fiber network, otherwise, map unsuccessfully.Similarly, search in physics optical-fiber network and distribute virtual link (B, C), (C, D), the bandwidth resources of (D, A), if the bandwidth resources of whole virtual links are all allocated successfully, virtual optical network maps successfully, otherwise maps unsuccessfully.
the method maps auxiliary view by building virtual optical network, effectively can reduce the complexity of virtual optical network mapping process; Work in coordination with mapping method by virtual optical network, improve the resource utilization of physics optical-fiber network, the cost reducing physics optical-fiber network and energy consumption consumption, solve the resource allocation problem of physics optical-fiber network.
should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (10)
1. virtual optical network works in coordination with a mapping method, it is characterized in that, comprises the following steps:
S01: according to the demand for services attribute of virtual optical network and the dummy node of virtual optical network and the feature of virtual link, divide the sequence of mapping of dummy node and virtual link;
S02: according to the target requirement of virtual optical network, selects all nodes to pre-configured operating path, construction Ricoh network mapping auxiliary view in physics optical-fiber network;
S03: according to dummy node and virtual link sequence of mapping, judge whether dummy node and virtual link meet mapping condition, if meet described mapping condition, then virtual link and dummy node are mapped to constructed physics optical-fiber network to map in auxiliary view, otherwise the mapping of dummy node and virtual link failure;
S04: according to the bandwidth demand of virtual link, the path selecting virtual link to map in physics optical-fiber network, determine the configuration parameter in this path, then in configured path, corresponding bandwidth resources are distributed, if the bandwidth resources of distributing can meet the bandwidth demand of virtual link, the mapping success of virtual link, otherwise terminate virtual link mapping; Repeat step S03, until all dummy nodes and virtual link are mapped to physics optical-fiber network.
2. virtual optical network according to claim 1 works in coordination with mapping method, it is characterized in that, in described step S01, the sequence of mapping of virtual link is divided, according to the sequence of mapping of the resource requirement size determination dummy node of virtual link sequence of mapping and dummy node according to the bandwidth demand size of virtual link.
3. virtual optical network according to claim 1 works in coordination with mapping method, it is characterized in that, in described step S02, calculate the alternative path group of all physical nodes, configure each node between beeline as the link metric of physics optical-fiber network auxiliary view corresponding node, and be configured to the right operating path of this node.
4. virtual optical network according to claim 1 works in coordination with mapping method, it is characterized in that, in described step S03, described mapping condition comprises: in same virtual optical network, and different dummy nodes or virtual link can not be mapped in identical physical node or physical pathway simultaneously; The resource of dummy node demand is less than or equal to the resource that physical node provides; And virtual link is mapped to the bandwidth resources that physical pathway can provide abundance.
5. virtual optical network according to claim 1 works in coordination with mapping method, it is characterized in that, in described step S04, described configuration parameter comprises transmission rate and corresponding modulation format.
6. virtual optical network works in coordination with a mapping device, it is characterized in that, comprising:
Dummy node and virtual link sequence of mapping divide module, according to the map feature in virtual optical network, based on the resource requirement of dummy node and the bandwidth demand of virtual link, determine the sequence of mapping of dummy node and virtual link;
Physics optical-fiber network maps auxiliary view and builds module, according to the target requirement of virtual optical network, selects all nodes to pre-configured operating path, construction Ricoh network mapping auxiliary view in physics optical-fiber network;
Dummy node and virtual link work in coordination with mapping block, in virtual optical network mapping process, for the optimization aim that virtual optical network maps, adjustment dummy node and virtual link work in coordination with mapping policy, all dummy nodes and virtual link are mapped in physics optical-fiber network auxiliary view;
The physics light net resource distribution module of the bandwidth demand of Virtual link, the pre-configured operating path of physics optical-fiber network is mapped to according to virtual link, determine the configuration parameter in this path, available bandwidth resources are searched in this operating path, if meet the bandwidth demand of virtual link, virtual link is successfully established, otherwise virtual optical network is set up unsuccessfully.
7. virtual optical network according to claim 6 works in coordination with mapping device, it is characterized in that, described physics optical-fiber network maps auxiliary view and builds module by calculating the alternative path group of all physical nodes, configure each node between beeline as the right link metric of physics optical-fiber network auxiliary view corresponding node, and be configured to the right operating path of this node.
8. virtual optical network according to claim 6 works in coordination with mapping device, it is characterized in that, the sequence of mapping of virtual link is divided, according to the sequence of mapping of the resource requirement size determination dummy node of virtual link sequence of mapping and dummy node according to the bandwidth demand size of virtual link.
9. virtual optical network according to claim 6 works in coordination with mapping device, it is characterized in that, described configuration parameter comprises transmission rate and corresponding modulation format.
10. the virtual optical network according to any one of claim 6-9 works in coordination with mapping device, it is characterized in that, also comprise virtual optical network and map judgement and alert module, when performing unsuccessfully for module or cannot perform, give a warning operation, controls whole device interrupt run.
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