CN104917629B - First ability method of combination of more switching node collaborations - Google Patents
First ability method of combination of more switching node collaborations Download PDFInfo
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- CN104917629B CN104917629B CN201510175085.1A CN201510175085A CN104917629B CN 104917629 B CN104917629 B CN 104917629B CN 201510175085 A CN201510175085 A CN 201510175085A CN 104917629 B CN104917629 B CN 104917629B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/20—Traffic policing
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Abstract
The present invention relates to a kind of first ability method of combination of more switching node collaborations, contain the following steps：1：The network node management method of network administrator is described using function combined strategy, and the set of strategies of generation is standardized；2：By global network view, first ability layout of multiple switching nodes is got up using first combined ability method, this yuan of combined ability method includes the mapping process of " strategy combination chain execution route "：2.1：" strategy combination chain " maps：The ordered set of a string of all elements comprising first capability set is parameterized by object set and demand collection, and generating one has hard objectives and the combination chain of request；2.2：" combination chain execution route " mapping：Select an example that feasible execution route is finally calculated according to the arrangement view and network topology of first ability example each first ability；The present invention can realize the collaborative work of first ability between more switching nodes, be convenient for developer's developing network function, accelerate the innovation of network function.
Description
(1), technical field：The present invention relates to a kind of first ability method of combination, are assisted more particularly to a kind of more switching nodes
Same first ability method of combination.
(2), background technology:As current network service is increasingly various, network application is increasingly abundant, conventional internet
Service mode is faced with various challenges.On the one hand, the network application development of user level is very rapid, especially
Service providers' open service interface such as ***, facebook further excites demand of the upper layer application to function and increasingly increases
It is more；On the other hand, the network function of bottom is extremely limited, and most of network equipment function closing prevents developer's exploitation new
The network function of type.Upper layer application and the mismatch of bottom-layer network development are conventional internet design facing challenges.In order to make
Bottom-layer network can realize that function opens, and the chance of exploitation bottom-layer network function be provided to developer, it is new that industry proposes some
The network architecture of type.They mostly detach data plane with control plane, and control plane and data surface use unified mark
Quasi- interface protocol connection.This makes it possible to develop bottom-layer network function to be no longer only equipment supplier, while being also extended to times
What third party's tissue and company.
The opening of network function will greatly push the innovation of network function.With the innovation of network function, meeting in network
There are a large amount of fine-grained function modules, and the same function module has the example of a large amount of different developer's offers in net
It is coexisted in network.Therefore, the network application on upper layer has many alternative examples when using certain network function.In addition, network
The example that manager also has the more free management and control spatial choice of bigger different is combined to cope with different performance requirements.
However, synergistically management spreads function module in a network and the example is but very difficult.On the one hand, network is simultaneously
Unified function module is not provided to developer to define, lead to the network function module granularity that third-party developer develops not
One, function is extensive, it is difficult to organization of unity.On the other hand, network does not also provide unified interface to developer, this leads to network work(
It can not cooperate between module.In addition, how to be combined network module, how selector closes the function of layer demand
Example is all a problem to be solved.
Invention content
The technical problem to be solved by the present invention is to：A kind of first ability method of combination of more switching node collaborations, the party are provided
Method can realize the collaborative work of first ability between more switching nodes, real convenient for developer's developing network function and network administrator
Existing diversified strategy, accelerates the innovation of network function.
Technical scheme of the present invention：
A kind of first ability method of combination of more switching node collaborations, contains the following steps：
Step 1：The network node management method of network administrator is described using function combined strategy, and will be generated
Set of strategies standardization, i.e., to developer provide standard policy library；
Step 2：By global network view, using first combined ability method by first ability layout of multiple switching nodes
Get up, this yuan of combined ability method includes the mapping process of " strategy-combination chain-execution route ".
The element description of first ability includes nine tuple structures, S:=<T,I,O,ID,B,E,F,R,A>, that is,<Type,
Input interface collection, output interface collection, mark execute body, event set, Facet classification, resource, property set>(referring to application No. is
ZL201310307096.1's《A kind of data transmission method and device》In description).
Strategy in step 2 contains object set, first capability set and demand collection；Object set is the target collection of operation to be executed
(such as in traffic engineering, it is the set of some streams)；First capability set is first capabilities list with type identification, in first capability set
First ability be ordered into arrangement, and object set must traverse all first abilities inside first capability set；Demand collection defines
The complete processing assembly line performance requirement to be followed, demand collection state the behavior of Global treatment about using Service Quality Metrics
Beam.
Strategy is configured by network operator or network administrator, according to the strategy, for different application scenarios using not
Same plan carrys out management and control network.
The mapping process of " strategy-combination chain-execution route " is divided into two steps in step 2, and respectively " strategy-combination chain " reflects
It penetrates and " combination chain-execution route " maps, it is specific as follows：
Step 2.1：" strategy-combination chain " maps：The ordered set of a string of all elements comprising first capability set is by target
Collection and demand collection parametrization, generating one has hard objectives and the combination chain of request；
" strategy-combination chain " mapping is expressed asWherein,G representation parameters
Process, P represent combined strategy, and O represents object set, C representative element capability sets, and D represents demand collection；Mapping value isIndicate one
A ordered set for containing a string yuan of abilities, andThe all elements for containing C, be a target be O, the parameter that demand is D
Combination chain is changed；
Step 2.2：" combination chain-execution route " mapping：One example is selected to each first ability, according to first ability example
Arrangement view and network topology, feasible execution route is finally calculated；
" combination chain-execution route " mapping is described as：Wherein " → " represents mapping
Process；WhereinRepresent combination chainI-th yuan of ability；It represents
First abilityAll example sets, wherein symbol " a " representative instance, namelyIt is first ability to represent eReality
Example；If F non-emptys, " combination chain-execution route " mapping can succeed, i.e., for combining chainAt least one is feasible
Execution route exists.
" combination chain-execution route " mapping method takes " global combined method ", and " global combined method " considers combination
Cooperative relationship in chain between first ability, its step are as follows：
Step 2.2.1：For the first ability of each of first capability set, one of example is chosen respectively, obtains a reality
Combination chain after exampleization；In this approach, the combination chain set after being instantiated；
Step 2.2.2：According to network example Deployment view and network node topology, selection meets the feasible of network connectivty
Combine chain set；
Step 2.2.3：Under the premise of considering whole performance indicator constraint, optimal set is chosen in feasible combination chain set
Close chain.
This method can fully utilize global performance requirement to lead to first ability example layout in multiple switching nodes
The complementation between each first ability example index is crossed, the processing assembly line for meeting user demand is calculated.
Each member ability is owned by a candidate example collection, needs to choose an example from this set to execute
Relevant concrete operations.After first ability all on combination chain all instantiates, a processing assembly line can be realized, that is, hold
Walking along the street diameter.The each first ability instantiation for combining chain is constituted into an execution route.
Step 2.2.3 can be described as a 0-1 linear programming problem, enable the solution that g is linear programming problem, then
It is a state of simulated annealing method that can claim this solution, and it is state space to enable Ξ, it is deconstructed by feasible；It is moved back using simulation
Ignition method chooses optimum combination chain, includes the following steps：
Step 2.2.3.1：The original state of selecting system from state space, and determine initial temperature；
Step 2.2.3.2：A state is randomly selected from state set space, is set as original state；Ξ (g) is can be from shape
The state set that state g is reached；In the case where controlling temperature T, the probability P that state g ' is reached from state g is calculatedT(g, g'),
Middle g ' represents a state in addition to g in state set space；
Step 2.2.3.3：Compliance state g reaches state g ' probability PsT(g, g') updates current state；
Step 2.2.3.4：Reduce control temperature T；When reaching maximum iterations or control temperature T=0, terminate；
Otherwise, step 2.2.3.2 is turned to.
Combination chain is to be formed by first combined ability of different function, and first ability therein is ordered into arrangement；Combination link
Structure includes serial, parallel and bifurcated.Wherein, serial combination scheme is most basic combination, and other combinations can be with
It is derived from by serial mode.
First combined ability method in step 2 is completed by first ability layout function module, first ability layout function module
In contain：Register, accelerator, first ability information library, optimum choice device, policy transformation module, combination chain pond, execution route
Pond, topology information base and Topology Discovery module are coordinations between each section；First ability layout function module is connect by API
Mouth is contacted with first ability, and first combined ability is got up to realize diversified by first ability layout function module according to administrator's demand
Service, the execution route that first ability layout function module generates open up benefit by controlling the network of server mappings to bottom.
In the network of no first ability layout function module, when data packet one interchanger of arrival, if energy
It is fitted on list item, it will be transferred to next-hop；Otherwise, it will be forwarded to a control server, in controlling server, road
By that can be calculated and be installed in interchanger, therefore remaining data packet can be directly forwarded.Has the function of first ability layout
In the network of module, process will change, and specifically have following steps：
Step 601：It is orderly combination chain, including constraint set, object set by the policy resolution of network administrator；
Step 602：An example is chosen for each first ability, and exports execution route；Each execution route is by distinctive
Code identification；
Step 603：One data packet reaches interchanger, otherwise will be upper if there is list item matching such as is then forwarded at the operations
Pass to control server；
Step 604：Uploading to the data packet of control server can be handled first by first ability layout function module；
Step 605：If data packet matched arrived that target tightening in execution route one, where this data packet
Stream be one strategy concern stream；Corresponding execution route can be installed to by controlling server in switch-layer topology, be connect down
The data packet of this stream come will be directly by the processing of this execution route；
Step 606：If data packet is not matched to the object set of any execution route, this data packet can be controlled
Control server processing.
Beneficial effects of the present invention：
1, the present invention is proposed using first ability as the method for first ability layout of network basic functional units, for solving net
The combinatorial problem of first ability in network, by the method, the manager of network can easily manage network, realize various
Management strategy.The present invention can provide first combined ability chain of customization for different service requests, and realize more switching nodes
Between first ability collaborative work, realize diversified strategy convenient for developer's developing network function and network administrator, accelerate
The innovation of network function.
Description of the drawings
Fig. 1 is the structural schematic diagram for combining chain；
Fig. 2 is the description schematic diagram of strategy；
Fig. 3 is that " strategy-combination chain-execution route " maps flow chart schematic diagram；
Fig. 4 is the schematic diagram of simulated annealing method；
Fig. 5 is the structural schematic diagram of first ability layout function module；
Fig. 6 is that a data packet reaches the processing flow schematic diagram after interchanger；
Fig. 7 is a kind of first ability application scenarios schematic diagram；
Fig. 8 is the description schematic diagram for first ability that type is port_scan；
Fig. 9 is an example schematic of first ability that type is port_scan.
Specific implementation mode
First ability method of combination of more switching node collaborations contains the following steps：
Step 1：The network node management method of network administrator is described using function combined strategy, and will be generated
Set of strategies standardization, i.e., to developer provide standard policy library；
Step 2：By global network view, using first combined ability method by first ability layout of multiple switching nodes
Get up, this yuan of combined ability method includes the mapping process of " strategy-combination chain-execution route ".
The element description of first ability includes nine tuple structures, S:=<T,I,O,ID,B,E,F,R,A>, that is,<Type,
Input interface collection, output interface collection, mark execute body, event set, Facet classification, resource, property set>.
Strategy in step 2 contains object set, first capability set and demand collection (as shown in Figure 2)；Object set is to execute behaviour
The target collection of work (such as in traffic engineering, it is the set of some streams)；First capability set is arranged with first ability of type identification
Table, first ability in first capability set is ordered into arrangement, and object set must traverse all first abilities inside first capability set；
Demand collection defines that the complete processing assembly line performance requirement to be followed, demand collection are global using Service Quality Metrics statement
The behavior restraint of processing.
Strategy is configured by network operator or network administrator, according to the strategy, for different application scenarios using not
Same plan carrys out management and control network.
Mapping (as shown in Figure 3) process of " strategy-combination chain-execution route " is divided into two steps, respectively " plan in step 2
Summary-combination chain " mapping and " combination chain-execution route " mapping, it is specific as follows：
Step 2.1：" strategy-combination chain " maps：The ordered set of a string of all elements comprising first capability set is by target
Collection and demand collection parametrization, generating one has hard objectives and the combination chain of request；
" strategy-combination chain " mapping is expressed asWherein,G representation parameters
Process, P represent combined strategy, and O represents object set, C representative element capability sets, and D represents demand collection；Mapping value isIndicate one
A ordered set for containing a string yuan of abilities, andThe all elements for containing C, be a target be O, the ginseng that demand is D
Number has changed combination chain；
Step 2.2：" combination chain-execution route " mapping：One example is selected to each first ability, according to first ability example
Arrangement view and network topology, feasible execution route is finally calculated；
" combination chain-execution route " mapping is described as：Wherein " → " represents mapping
Process；WhereinRepresent combination chainI-th yuan of ability；It represents
First abilityAll example sets, wherein symbol " a " representative instance, namelyIt is first ability to represent eReality
Example；If F non-emptys, " combination chain-execution route " mapping can succeed, i.e., for combining chainAt least one is feasible
Execution route exists.
" combination chain-execution route " mapping method takes " global combined method ", and " global combined method " considers combination
Cooperative relationship in chain between first ability, its step are as follows：
Step 2.2.1：For the first ability of each of first capability set, one of example is chosen respectively, obtains a reality
Combination chain after exampleization；In this approach, the combination chain set after being instantiated；
Step 2.2.2：According to network example Deployment view and network node topology, selection meets the feasible of network connectivty
Combine chain set；
Step 2.2.3：Under the premise of considering whole performance indicator constraint, optimal set is chosen in feasible combination chain set
Close chain.
This method can fully utilize global performance requirement to lead to first ability example layout in multiple switching nodes
The complementation between each first ability example index is crossed, the processing assembly line for meeting user demand is calculated.
Each member ability is owned by a candidate example collection, needs to choose an example from this set to execute
Relevant concrete operations.After first ability all on combination chain all instantiates, a processing assembly line can be realized, that is, hold
Walking along the street diameter.The each first ability instantiation for combining chain is constituted into an execution route.
Step 2.2.3 can be described as a 0-1 linear programming problem, enable the solution that g is linear programming problem, then
It is a state of simulated annealing method that can claim this solution, and it is state space to enable Ξ, it is deconstructed by feasible；It is moved back using simulation
Ignition method chooses optimum combination chain, includes the following steps (as shown in Figure 4)：
Step 2.2.3.1：The original state of selecting system from state space, and determine initial temperature；
Step 2.2.3.2：A state is randomly selected from state set space, is set as original state；Ξ (g) is can be from shape
The state set that state g is reached；In the case where controlling temperature T, the probability P that state g ' is reached from state g is calculatedT(g, g'),
Middle g ' represents a state in addition to g in state set space；
Step 2.2.3.3：Compliance state g reaches state g ' probability PsT(g, g') updates current state；
Step 2.2.3.4：Reduce control temperature T；When reaching maximum iterations or control temperature T=0, terminate；
Otherwise, step 2.2.3.2 is turned to.
Combination chain is to be formed by first combined ability of different function, and first ability therein is ordered into arrangement；Combination link
Structure includes serial, parallel and bifurcated (as shown in Figure 1).Wherein, serial combination scheme is most basic combination, other groups
Conjunction mode can be derived from by serial mode.
First combined ability method in step 2 is completed by first ability layout function module (as shown in Figure 5), and first ability is compiled
Contain in row function module：Register, accelerator, first ability information library, optimum choice device, policy transformation module, combination chain pond,
Execution route pond, topology information base and Topology Discovery module are coordinations between each section；First ability layout function module is logical
It crosses api interface to contact with first ability, first combined ability is got up to realize more by first ability layout function module according to administrator's demand
The various service of kind, the execution route that first ability layout function module generates are opened up by controlling the network of server mappings to bottom
It mends.
Fig. 6 gives a data packet and reaches the process flow after interchanger；In no first ability layout function module
In network, when a data packet reaches an interchanger, if list item can be matched to, it will be transferred to next-hop；Otherwise, it
It will be forwarded to a control server, in controlling server, routing can be calculated and is installed in interchanger, therefore remaining
Data packet can directly be forwarded.In the network with first ability layout function module, process will change, and specifically have following
Step：
Step 601：It is orderly combination chain, including constraint set, object set by the policy resolution of network administrator；
Step 602：An example is chosen for each first ability, and exports execution route；Each execution route is by distinctive
Code identification；
Step 603：One data packet reaches interchanger, otherwise will be upper if there is list item matching such as is then forwarded at the operations
Pass to control server；
Step 604：Uploading to the data packet of control server can be handled first by first ability layout function module；
Step 605：If data packet matched arrived that target tightening in execution route one, where this data packet
Stream be one strategy concern stream；Corresponding execution route can be installed to by controlling server in switch-layer topology, be connect down
The data packet of this stream come will be directly by the processing of this execution route；
Step 606：If data packet is not matched to the object set of any execution route, this data packet can be controlled
Control server processing.
Technical scheme of the present invention is further described with reference to some attached drawings：
First ability description (as shown in Figure 7) of port scan：Control server A and control server B are responsible for different areas
Domain, network administrator wish a strategy：All flows all have to pass through a monitoring node, for example are accessing some storages
Port scan is had to pass through before resource (such as Hash table HT).As soon as connection of the initiation of user 1 to HT, then in node E1
A connection is established between node E2, control server A can select to establish first ability of port scan in node E1.
Fig. 8 gives the description for first ability that type is port_scan.The descriptor format of the first ability of definition is：<Type:
Descriptions>, Description is the reference for being provided to developer.The example standard of IPS is write with XML format, such as
Under：
Fig. 9 gives an example of first ability that type is port_scan.The name name of Port_scan is flow_
Drop, monitoring flow rate mode is such as<dst_port:80,dst_IP:192.168.0.0/16>Data flow, and match with upper mold
The prior data bank of formula can all abandon.For port_scan, different developers can use different algorithm design and reality
Existing, external user can not be learnt.
Claims (4)
1. a kind of first ability method of combination of more switching node collaborations, it is characterized in that：Contain the following steps：
Step 1：The network node management method of network administrator is described using function combined strategy, and by the plan of generation
Slightly collection standardization, i.e., provide the policy library of standard to developer；
Step 2：By global network view, first ability layout of multiple switching nodes is risen using first combined ability method
Come, this yuan of combined ability method includes the mapping process of " strategy-combination chain-execution route ", and the strategy is the strategy of standard
Function combined strategy in library；
Strategy in the step 2 contains object set, first capability set and demand collection；Object set is the object set of operation to be executed
It closes；First capability set is first capabilities list with type identification, and first ability in first capability set is ordered into arrangement, and object set
All first ability inside first capability set must be traversed；Demand collection defines that the complete processing assembly line performance to be followed needs
It asks, demand collection states the behavior restraint of Global treatment using Service Quality Metrics；
The mapping process of " strategy-combination chain-execution route " is divided into two steps in the step 2, and respectively " strategy-combination chain " reflects
It penetrates and " combination chain-execution route " maps, it is specific as follows：
Step 2.1：" strategy-combination chain " maps：The ordered set of a string of all elements comprising first capability set by object set and
Demand collection parameterizes, and generating one has hard objectives and the combination chain of request；
Step 2.2：" combination chain-execution route " mapping：One example is selected to each first ability, according to point of first ability example
Feasible execution route is finally calculated in cloth view and network topology；
" combination chain-execution route " mapping method takes " global combined method ", and its step are as follows：
Step 2.2.1：For the first ability of each of first capability set, one of example is chosen respectively, obtains an instantiation
Combination chain afterwards；In this approach, the combination chain set after being instantiated；
Step 2.2.2：According to network example Deployment view and network node topology, the feasible combination for meeting network connectivty is chosen
Chain set；
Step 2.2.3：Optimum combination chain is chosen in feasible combination chain set.
2. first ability method of combination of more switching node collaborations according to claim 1, it is characterized in that：The step
2.2.3 it uses simulated annealing method to choose optimum combination chain, includes the following steps；
Step 2.2.3.1：The original state of selecting system from state space, and determine initial temperature；
Step 2.2.3.2：A state is randomly selected from state set space, is set as original state；The case where controlling temperature T
Under, calculate the probability P that state g ' is reached from state gT(g, g'), wherein g ' represent a shape in addition to g in state set space
State；
Step 2.2.3.3：Compliance state g reaches state g ' probability PsT(g, g') updates current state；
Step 2.2.3.4：Reduce control temperature T；When reaching maximum iterations or control temperature T=0, terminate；Otherwise,
Turn to step 2.2.3.2.
3. first ability method of combination of more switching node collaborations according to claim 1, it is characterized in that：The combination chain is
It is formed by first combined ability of different function, and first ability therein is ordered into arrangement；Combine chain structure include it is serial, parallel and
Bifurcated.
4. first ability method of combination of more switching node collaborations according to claim 1, it is characterized in that：In the step 2
First combined ability method completed by first ability layout function module；First ability layout function module passes through api interface and member
Ability contacts, and first ability layout function module gets up first combined ability to realize diversified service according to administrator's demand,
The network topology that the execution route that first ability layout function module generates passes through control server mappings to bottom.
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| CN106533966B (en) * | 2016-05-27 | 2019-05-14 | 清华大学 | A kind of the resource method of combination and device of network service |
| CN107998656B (en) * | 2017-11-22 | 2020-12-22 | 福建天晴数码有限公司 | Arranging method and terminal |
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