CN101521595A - Network management structure based on peer-to-peer and turning towards integration of three networks - Google Patents
Network management structure based on peer-to-peer and turning towards integration of three networks Download PDFInfo
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Abstract
The invention relates to a network management structure based on a peer-to-peer and turning towards the integration of three networks, which requires that a novel network management oriented to the three networks, aiming at the continuous increment of the network size, the increment of the isomerism, the diversification of network services and the sudden rise of the service quantity, as well as network dynamic changes based on the integration of the three networks has good expandability, reliability, destruction resistance, and adaptation to an heterogeneous dynamic environment. The network management structure makes use of the inherent advantages of good flexibility, acentric performance, self-organization, strong expandability, load leveling, and the like of a layering peer-to-peer network to put forward a multilayer distributed strategy management system structure based on a distributed hash table, and a self-control strategy management model based on a service level agreement and turning towards services, thus the network management structure can be well applied to a complex heterogeneous network based on the integration of the three networks so as to achieve self-control strategy management.
Description
Technical field
The network size that The present invention be directed to based on the integration of three networks constantly increases, isomerism increases, Network variation and number of services increase severely, and network dynamic change, new more harsh requirement has been proposed in network management, as good extensibility, reliability, survivability, and can adapt to complicated isomery dynamic environment.
Background technology
Along with propelling based on the network of the integration of three networks, the increase of network size, the increase of isomerism, the variation of Network and the sharp increase of number of services, and network dynamic change, network management has been proposed new requirement, be extensibility, reliability, survivability, adaptation isomery dynamic environment and network security, can be at any time, any network is managed under any place, any platform, but can solve the integration and the extensibility of network application, make network have scalability and network management task flexible distributed and automatically perform.
Network management framework designs by centralization at present, SNMP (Simple Network ManagementProtocol) as widespread deployment, TMN (Telecommunications Management Network), CMIP (common managementinformation protocol) etc., this centralized network ma nagement is because of its single point failure, poor expandability, can not realize the shortcomings such as network management between the territory, the requirement of not competent large-scale complex Network Management.The distributed network management of big quantity research, can overcome the defective of centralized network ma nagement based on technology such as CORBA or Web Service, improved reliability, survivability and the network administration properties of network management, reduced centralized network tube side formula simultaneously again and consumed in communication and the expense of calculating.So scalable distributed management is network management development trend and main challenge,, but there is the distributed data sharing problem with the user's that realizes the ubiquitous following integration of three networks demand.The P2P network is a kind of complete distributed architecture, and any one peer-entities in the network all is in equal status, and it both can ask to obtain service, can provide service again simultaneously, realizes sharing of resource.Employing is based on the P2P network struction distributed network management framework of multilayer distributed Hash table, the dynamic and the isomerism that can adapt to network, the location of realizing management information and resource is with shared, and the node of the P2P architecture of level by choosing function admirable is as management node, realize extensibility and management heterogeneous network, be applicable to isomery complex network based on the integration of three networks.
Summary of the invention
Technical problem: the purpose of this invention is to provide and a kind ofly can realize the management of extensibility and heterogeneous network, be applicable to management based on the large scale scale heterogeneous complex network of the integration of three networks based on the point-to-point network management framework that merges towards two nets.And based on the service-oriented autonomous tactical management model of SLA (Service Level Agreement service level agreement); realization is driving with the service; with the strategy is the center; the autonomous feedback control system of self-configuring, self-optimizing, self-healing and self-shield, but the QoS (Quality of Service service quality) of user's perception end to end and experience guaranteed.
Technical scheme: the present invention proposes new network management framework towards the integration of three networks based on multilayer distributed Hash table, and based on service level agreement, service-oriented autonomous tactical management model, can be applicable to complicated heterogeneous network well, realize autonomous tactical management based on the integration of three networks.
The present invention is based on point-to-point network management framework towards the integration of three networks is:
A. this framework is made up of strategic decision-making network, Policy Enforcement Point PEPs and user, wherein policy decision point PDP forms the multilayer dike point to point network based on distributed hashtable on application layer, communicate by letter in the client/server mode between policy agent and the policy decision point PDP, in management domain, adopt the distributed management mode to improve management of performance;
B. the election of policy decision point, policy decision point PDP is relatively stable and has the network node of good performance, for self-organizing network, by taking all factors into consideration disposal ability, bandwidth, line duration, dynamic, elect out from each terminal, can provide extensibility and fault-tolerance preferably to guarantee the overlay network PDN that forms by policy decision point PDP self-organizing;
C. also comprised the movable self-organization access after the integration of three networks in the network, selected one or more standby policy decision point PDP,, prevented that policy decision point PDP from dynamically adding and deviated from network in order to when policy decision point PDP leaves, in time enabling;
D. policy decision point PDP is except the strategy of formulating this locality or this territory, also to manage according to the network and the equipment thereof of strategy to this territory, while is as the member of the distributed hashtable overlay network of policy decision point PDP, safeguard point-to-point tactical management network, realize the shared and transmission of strategy between each territory based on distributed hashtable;
E. have extensibility,, set up the strategic decision-making network on upper strata, form multilayer overlay network PDN network layer when needed when between the user of different network during relevant business service;
F. the administrative model that has distributed communication mechanism.
The present invention adopts advantages such as the strong and load balancing in intrinsic good, the no center of flexibility of level point-to-point (P2P) network, self-organizing, extensibility, (the Distributed Hash Table based on DHT has been proposed, distributed Hash table) multilayer distributed tactical management architectural framework, and based on SLA (service level agreement), service-oriented autonomous tactical management model, can be applicable to complicated heterogeneous network well, realize autonomous tactical management based on the integration of three networks.
1. based on the multilayer distributed tactical management architectural framework of distributed hashtable
Policy management framework is proposed by IETF the earliest, but owing to do not consider dynamic heterogeneous situation, can't handle complicated dynamic use pattern and uncertain demand for services, also exist autgmentability poor simultaneously, and defectives such as the laod unbalance that C/S model brought, poor fault tolerance.The present invention proposes architecture at integration of three networks complex network.
(1). based on the distributed policy management system general frame of distributed hashtable
Multilayer distributed tactical management architecture (see figure 1) based on distributed hashtable, it is by strategic decision-making network (Policy Decision Network, PDN), Policy Enforcement Point (PEPs) and user form, PEPs and user are referred to as tactful Agent, and wherein PEPs is the Agent of implementation strategy, as router and fire compartment wall, also can provide the software and hardware of service, to carry out strategies such as correct use, safety, charging.Policy decision point (PDP, also claim strategic server) on application layer, form P2P network based on distributed hashtable, communicate by letter in the Client/Server mode between strategy Agent and the policy decision point (PDP), in management domain, can adopt the distributed management mode with the raising management of performance.Because policy decision point is relatively stable and network node with good performance, for self-organizing network, can be by taking all factors into consideration disposal ability, bandwidth, line duration, factors such as dynamic elect out from each terminal, and for fixing cable network, can take on by network management server, can guarantee that like this overlay network PDN that is formed by the PDP self-organizing can provide extensibility and fault-tolerance preferably, tactful Agent then can be dynamic, ability node more weak and that connect mutability, the structure of layering is applicable to the multiple access of wire and wireless under the integration of three networks situation like this, the heterogeneous network of multiple accesses such as fixing and mobile node and network equipment coexistence realizes that active block manages.Consider in addition after the integration of three networks and also comprised the movable self-organization access in the network, in order to prevent that PDP from dynamically adding and deviated from network, consider to select (even a plurality of) standby PDP, duplicate all information of active service PDP and upgraded timely, in order to when PDP leaves, in time enabling.
PDP is except the strategy of formulating this locality or this territory, also to manage according to the network and the equipment thereof of strategy to this territory, while is as the member of the distributed hashtable overlay network of PDP, safeguard P2P tactical management network, realize the shared and transmission of strategy between each territory based on distributed hashtable.
When different network such as China Mobile and CHINAUNICOM, or between the user of telecommunications network after the integration of three networks and Internet network during relevant business service, set up the strategic decision-making network on upper strata.Suppose PDN
0On the layer PDN is arranged
0AWith PDN
0BOn the strategic decision-making network professional connection the, each PDN are arranged each other
0Network is selected a PDP node separately and is formed new upper strata PDN
1Network belongs to two different PDN
0The user of network can obtain the strategy of negotiation by PDP representation node separately, visible upper strata PDN
1Arbitrary member of network will realize fault-tolerant and extensibility with transparent way as the gateway of the PDN network of its representative.System architecture can also form multilayer PDN network layer when needed, promptly at PDN
1Form new upper layer logic supervising the network on the network again, as PDN
2Network has good flexibility and extensibility.
(2). based on the distributed network management model of P2P
The distributed network management model is made up of three parts as shown in Figure 2 in the territory: NM server (simultaneously also as strategic decision-making server PDP), distributed network agency (DNA) and managed device.PDP loads MIB (the Management Information Base management information bank) statistics of handling through DNA filtration, synthetic etc. from DNA, and the ruuning situation of whole network is carried out global administration.DNA is based on the elementary cell of network monitor, management and the control system of P2P, have functions such as network performance monitoring and control, safe access and authentication management, professional classification and accounting management, by the strategy monitoring and manage network element in each DNA compass of competency.Form the distributed P 2 P supervising the network between the DNA, communicate by structurized or non-structured P2P communication mechanism, on the database rank, share network management information, the share class of MIB data is similar to sharing of file, can bring into play the technical advantage of P2P network and related protocol well and carry out data sharing.DNA is responsible for the management information that management in its management group, monitoring and collection have artis, realizes communication, index and forwarding between each management group DNA, safeguards the database an of this locality, for Sharing Management information between DNA.Simultaneously DNA carries out alternately with PDP, but the required network management information of DNA timed sending, perhaps when PDP when DNA sends request or poll, the statistical information of the MIB that this DNA transmission is correlated with arrives NM server.So alleviated the processing load of NM server greatly, equally also reduced the management information traffic, in addition,, also do not influenced the management of DNA, just delayed communication each other even NM server lost efficacy temporarily.The user also can be managed for configuration functional module by graphical user interface, improves the appreciable QoS of user.
2. based on the service-oriented autonomous tactical management model of SLA
In the whole network IPization trend that is inevitable, network management can not realize by the mode of labor management based on the complex network of the integration of three networks, and needs to adopt autonomous tactical management.The present invention is under the distributed policy management system general frame based on distributed hashtable; automation services delivery management model on a kind of general IP network is proposed; this model adopts the strategy instruction based on the service-oriented and end-to-end user QoS of SLA; coordination service, resource, charging and error management; realization is driving with the service; with the strategy is the center, the autonomous feedback control system of self-configuring, self-optimizing, self-healing and self-shield.
This autonomy tactical management model from the multimedia transmission that is applied to simple IP bag of complexity, is all regarded service by service driving as.Bottom IP on resource bag be transmitted as basic service, and each upper layer application thereon is the composite service (see figure 3).Physical resource comprises and calculating and Internet resources such as router, switch, link, service and memory device, on the logic aspect for physical resource provide a unification, accordant interface, with simplify resource management, service is synthetic and dynamic resource is shared.Base services layer is used and is directly offered user's resource by service provider (SP), as has the IP transmission service that QoS ensures, perhaps the purchaser SP that becomes that buys from other SP can be for the basic service of domination.Composite service has comprised a plurality of basic services and/or composite service, and the composite service of the superiors directly offers the client.The synthetic gradable recurrence of service is till the composite service that obtains expecting.An autonomous element is all sealed in each service, all autonomous elements and other element on the different grades of service automatically, strategy is controllably mutual.
Tactical management comprises that strategy produces, stores, assesses and carries out.Strategy has been represented service goal and the operation control logic that can determine the management system behavior.Tactical management guaranteed calculating/Internet resources meet under certain regular prerequisite can dynamic-configuration reaching a certain target, and can make quick reflection to environmental change.Management plane realizes that based on tactical management all management functions (resource, strategy, SLA, charging and financial management) see Fig. 4, and wherein information bank is made up of five big classes:
User information database: comprise user profile, as personal information, the service list of order and the billing scheme of renewal;
Policy information base: comprise the strategy of real-time generation, or predefined strategy.These strategies are based on service, are used to control monitoring engine, Performance Evaluation, SLA assessment, problem detection, operation such as planning engine and provide SLA template for the service that provides;
Service information repository: comprise user activated Service Instance information, as relevant participant (user and SP), the SLA of service offering adjusts, the type of resource requirement and quantity, the billing scheme of service and operation history;
The information of the obtained resource of resource information bank: SP domination.As resource type and quality etc.
The knowledge information storehouse: required information when the problem of being included in occurs produces reason, time of origin, the participant that involves, the influence of solution and the scheme of taking in detail as problem description, problem.The knowledge information storehouse is used for the planning network management.
The user in case and finish service level agreement (SLA) between the SP and consult, sign a contract, can activate corresponding service and expectation can reach ordered performance class, and user profile and charge information are delivered to user information database and accounting management respectively.For the user activated service is provided, at first to explain SLA and SLA information is converted into resource requirement type and quantity, and, then implement resource management and scheduling by explorer for composite service provides synthetic schemes, realize the payment of service.In feedback element, the autonomous management system is by carrying out the monitoring of network traffics to different business, the collection of initial data, filtration, merging and related and prediction, and submit to operation and carry out manager.The main executive problem detection of Action Manager, SLA assessment, network performance evaluation and traffic policy control, and it is synthetic that relevant information is fed back to planning engine, accounting management and service.Planning engine is the core of autonomous system self-optimizing, self-shield and self-healing, adjusts strategy, heavy distribution services and resource according to information on services, policy information, resource information, knowledge information and the fault information of input.Form the closed-loop control of feedback like this, to reach the purpose of good service-oriented autonomous management based on SLA.At last, accounting management is used to adjust user's bill, for example when SLA breaks rules, then adjusts according to the set charging policy of SP.
Beneficial effect: the present invention adopt the level point to point network intrinsic good, the no center of flexibility, self-organizing, extensibility is strong and advantage such as load balancing, proposition is based on DHT (Distributed Hash Table, distributed Hash table) multilayer distributed tactical management architectural framework, and based on SLA (service level agreement), service-oriented autonomous tactical management model, can be applicable to complicated heterogeneous network well, realize autonomous tactical management based on the integration of three networks.
Of the present invention based on point-to-point network management architecture framework towards the integration of three networks, employing is based on the flexibility of the point-to-point strategic decision-making network institute tool of distributed hashtable, no center, self-organizing, advantages such as the strong and load balancing of extensibility, foundation is towards the new network management framework of the integration of three networks, to adapt to the dynamic of network, the location of realizing management information and resource is with shared, because the architecture of level can be chosen the node of function admirable as management node, can realize the management of extensibility and heterogeneous network, be applicable to management based on the large scale scale heterogeneous complex network of the integration of three networks.And based on the service-oriented autonomous tactical management model of SLA (Service LevelAgreement service level agreement); realization is driving with the service; with the strategy is the center; the autonomous feedback control system of self-configuring, self-optimizing, self-healing and self-shield, but the QoS (Quality of Service service quality) of user's perception end to end and experience guaranteed.
Description of drawings
Fig. 1 is based on the distributed policy management architectural framework of distributed hashtable.Provided the scalable distributed tactical management network architecture among the figure towards the integration of three networks.
Fig. 2 is based on the distributed network management illustraton of model of P2P.Provided network management each several part level schematic diagram among the figure.
Fig. 3 has provided network service hierarchy schematic diagram.
Fig. 4 is based on the autonomous management control chart of the service-oriented of SLA.Provided service-oriented among the figure, the network management that with the management information base is the center is from the main feedback control flow graph.
Embodiment
Framework of the present invention is:
A. this framework is made up of strategic decision-making network, Policy Enforcement Point PEPs and user, wherein policy decision point PDP forms the multilayer dike point to point network based on distributed hashtable on application layer, communicate by letter in the client/server mode between policy agent and the policy decision point PDP, in management domain, adopt the distributed management mode to improve management of performance;
B. the election of policy decision point, policy decision point PDP is relatively stable and has the network node of good performance, for self-organizing network, by taking all factors into consideration disposal ability, bandwidth, line duration, dynamic, elect out from each terminal, can provide extensibility and fault-tolerance preferably to guarantee the overlay network PDN that forms by policy decision point PDP self-organizing;
C. also comprised the movable self-organization access after the integration of three networks in the network, selected one or more standby policy decision point PDP,, prevented that policy decision point PDP from dynamically adding and deviated from network in order to when policy decision point PDP leaves, in time enabling;
D. policy decision point PDP is except the strategy of formulating this locality or this territory, also to manage according to the network and the equipment thereof of strategy to this territory, while is as the member of the distributed hashtable overlay network of policy decision point PDP, safeguard point-to-point tactical management network, realize the shared and transmission of strategy between each territory based on distributed hashtable;
E. have extensibility,, set up the strategic decision-making network on upper strata, form multilayer overlay network PDN network layer when needed when between the user of different network during relevant business service;
F. the administrative model that has distributed communication mechanism.
1 sets up the distributed policy management system general frame based on distributed hashtable
At first set up multilayer distributed tactical management architecture (see figure 1) based on distributed hashtable.Policy decision point (PDP) is formed point-to-point (P2P) network based on distributed hashtable, i.e. strategic decision-making network (PDN) on application layer.Communicate by letter in the client/server mode between strategy Agent (comprising user and Policy Enforcement Point) and the policy decision point, in management domain, can adopt the distributed management mode to improve management of performance.PDP is except the strategy of formulating this locality or this territory, also to manage according to the network and the equipment thereof of strategy to this territory, while is as the member of the distributed hashtable overlay network of PDP, safeguard P2P tactical management network, realize the shared and transmission of strategy between each territory based on distributed hashtable.So, policy decision point is relatively stable and has the network node of good performance, tactful Agent then can be a node dynamic, that ability is more weak and connection is variable, the structure of layering is applicable to the multiple access of wire and wireless under the integration of three networks situation like this, the heterogeneous network of multiple accesses such as fixing and mobile node and network equipment coexistence realizes that active block manages.
1.1 determining of policy decision point
Policy decision point is formed on application layer based on the distributed hashtable point to point network, i.e. strategic decision-making network (PDN).Because policy decision point is relatively stable and network node with good performance, for self-organizing network, can obtain from each terminal election by taking all factors into consideration factors such as disposal ability, bandwidth, line duration, dynamic; And for fixing cable network, can take on by network management server, can guarantee that like this overlay network PDN that is formed by the PDP self-organizing can provide extensibility and fault-tolerance preferably.
1.2 standby policy decision point mechanism
Consider after the integration of three networks and also comprised the movable self-organization access in the network, policy decision point (PDP) then might be dynamic generation, in order to prevent that PDP from dynamically adding and deviated from network, consider to select (even a plurality of) node as standby PDP, duplicate all information of active service PDP and upgraded timely, in order to when PDP leaves, in time enabling.The system of selection of standby PDP is identical with the system of selection of PDP.
1.3 the structure of multilayer strategic decision-making network
When different network such as China Mobile and CHINAUNICOM, or between the user of telecommunications network after the integration of three networks and Internet network during relevant business service, set up the strategic decision-making network (see figure 1) on upper strata.Suppose PDN
0On the layer PDN is arranged
0AWith PDN
0BOn the strategic decision-making network professional connection the, each PDN are arranged each other
0Network is selected a PDP node separately and is formed new upper strata PDN
1Network belongs to two different PDN
0The user of network can obtain the strategy of negotiation by PDP representation node separately, visible upper strata PDN
1Arbitrary member of network will realize fault-tolerant and extensibility with transparent way as the gateway of the PDN network of its representative.System architecture can also form multilayer PDN network layer when needed, promptly at PDN
1Form new upper layer logic supervising the network on the network again, as PDN
2Network has good flexibility and extensibility.
1.4 set up distributed network management system in the territory
The distributed network management model is made up of three parts as shown in Figure 2 in the territory: NM server (simultaneously also as strategic decision-making server PDP), distributed network agency (DNA) and managed device.PDP loads MIB (the Management Information Base management information bank) statistics of handling through DNA filtration, synthetic etc. from DNA, and the ruuning situation of whole network is carried out global administration.DNA is based on the elementary cell of network monitor, management and the control system of P2P, have functions such as network performance monitoring and control, safe access and authentication management, professional classification and accounting management, by the strategy monitoring and manage network element in each DNA compass of competency.Form the distributed P 2 P supervising the network between the DNA, communicate by structurized P2P communication mechanism, share network management information on the database rank, the share class of MIB data is similar to sharing of file, can bring into play the technical advantage of P2P network and related protocol well and carry out data sharing.DNA is responsible for the management information that management in its management group, monitoring and collection have artis, realizes communication, index and forwarding between each management group DNA, safeguards the database an of this locality, for Sharing Management information between DNA.Simultaneously DNA carries out alternately with PDP, but the required network management information of DNA timed sending, perhaps when PDP when DNA sends request or poll, the statistical information of the MIB that this DNA transmission is correlated with arrives NM server.Can alleviate the processing load of NM server, and reduce the management information traffic, simultaneously,, also not influence the management of DNA, just delay communication each other even NM server lost efficacy temporarily.At last, the user also can be managed for configuration functional module by graphical user interface.
2 set up the service-oriented autonomous tactical management based on service level agreement (SLA)
2.1 set up information bank
The information bank of setting up is made up of five big classes:
User information database: comprise user profile, as personal information, the service list of order and the billing scheme of renewal;
Policy information base: comprise the strategy of real-time generation, or predefined strategy.
Service information repository: comprise user activated Service Instance information, as relevant participant, the SLA of service offering adjusts, the type of resource requirement and quantity, the billing scheme of service and operation history;
The information of the obtained resource of resource information bank: SP domination.
The knowledge information storehouse: required information when the problem of being included in occurs produces reason, time of origin, the participant that involves, the influence of solution and the scheme of taking in detail as problem description, problem.
2.2 definition service
Autonomous tactical management from the multimedia transmission that is applied to simple IP bag of complexity, is all regarded service by service driving as.Bottom IP on resource bag be transmitted as basic service, and each upper layer application thereon is the composite service (see figure 3).Physical resource comprises and calculating and Internet resources such as router, switch, link, service and memory device, on the logic aspect for physical resource provide a unification, accordant interface, with simplify resource management, service is synthetic and dynamic resource is shared.Base services layer is used and is directly offered user's resource by service provider (SP), as has the IP transmission service that QoS ensures, perhaps the purchaser SP that becomes that buys from other SP can be for the basic service of domination.Composite service has comprised a plurality of basic services and/or composite service, and the composite service of the superiors directly offers the client.The synthetic gradable recurrence of service is till the composite service that obtains expecting.An autonomous element is all sealed in each service, all autonomous elements and other element on the different grades of service automatically, strategy is controllably mutual.
2.3 realize autonomous tactical management.
Tactical management comprises that strategy produces, stores, assesses and carries out.Strategy has been represented service goal and the operation control logic that can determine the management system behavior.Tactical management guaranteed calculating/Internet resources meet under certain regular prerequisite can dynamic-configuration reaching a certain target, and can make quick reflection to environmental change.Management plane is realized all management functions based on tactical management.The following (see figure 4) of autonomous strategic process: the user in case and finish service level agreement (SLA) between the SP and consult, sign a contract, can activate corresponding service and expectation can reach ordered performance class, and user profile and charge information are delivered to user information database and accounting management respectively.For the user activated service is provided, at first to explain SLA and SLA information is converted into resource requirement type and quantity, and, then implement resource management and scheduling by explorer for composite service provides synthetic schemes, realize the payment of service.In feedback element, the autonomous management system is by carrying out the monitoring of network traffics to different business, the collection of initial data, filtration, merging and related and prediction, and submit to operation and carry out manager.The main executive problem detection of Action Manager, SLA assessment, network performance evaluation and traffic policy control, and it is synthetic that relevant information is fed back to planning engine, accounting management and service.Planning engine is the core of autonomous system self-optimizing, self-shield and self-healing, adjusts strategy, heavy distribution services and resource according to information on services, policy information, resource information, knowledge information and the fault information of input.Form the closed-loop control of feedback like this, to reach the purpose of good service-oriented autonomous management based on SLA.At last, accounting management is used to adjust user's bill, for example when SLA breaks rules, then adjusts according to the set charging policy of SP.Realization is driving with the service, is the center with the strategy, the autonomous feedback control system of self-configuring, self-optimizing, self-healing and self-shield.
Claims (1)
1. one kind based on point-to-point network management framework towards the integration of three networks, it is characterized in that this framework is:
A. this framework is made up of strategic decision-making network, Policy Enforcement Point PEPs and user, wherein policy decision point PDP forms the multilayer dike point to point network based on distributed hashtable on application layer, communicate by letter in the client/server mode between policy agent and the policy decision point PDP, in management domain, adopt the distributed management mode to improve management of performance;
B. the election of policy decision point, policy decision point PDP is relatively stable and has the network node of good performance, for self-organizing network, by taking all factors into consideration disposal ability, bandwidth, line duration, dynamic, elect out from each terminal, can provide extensibility and fault-tolerance preferably to guarantee the overlay network PDN that forms by policy decision point PDP self-organizing;
C. also comprised the movable self-organization access after the integration of three networks in the network, selected one or more standby policy decision point PDP,, prevented that policy decision point PDP from dynamically adding and deviated from network in order to when policy decision point PDP leaves, in time enabling;
D. policy decision point PDP is except the strategy of formulating this locality or this territory, also to manage according to the network and the equipment thereof of strategy to this territory, while is as the member of the distributed hashtable overlay network of policy decision point PDP, safeguard point-to-point tactical management network, realize the shared and transmission of strategy between each territory based on distributed hashtable;
E. have extensibility,, set up the strategic decision-making network on upper strata, form multilayer overlay network PDN network layer when needed when between the user of different network during relevant business service;
F. the administrative model that has distributed communication mechanism.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580957A (en) * | 2013-11-06 | 2014-02-12 | 华北计算技术研究所 | Node state rapid monitoring method for network without center |
| CN109302431A (en) * | 2018-12-14 | 2019-02-01 | 广州大学 | A kind of Internet of Things vast resources and the credible management system of data safety |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580957A (en) * | 2013-11-06 | 2014-02-12 | 华北计算技术研究所 | Node state rapid monitoring method for network without center |
| CN103580957B (en) * | 2013-11-06 | 2016-08-17 | 华北计算技术研究所 | A kind of node state quick monitoring method of network without center |
| CN109302431A (en) * | 2018-12-14 | 2019-02-01 | 广州大学 | A kind of Internet of Things vast resources and the credible management system of data safety |
| CN109302431B (en) * | 2018-12-14 | 2021-03-09 | 广州大学 | Internet of things mass resource and data security credible management system |
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|---|---|
| CN101521595B (en) | 2012-01-04 |
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