CN101521596A - Management structure for distributed dynamic self-organizing network - Google Patents
Management structure for distributed dynamic self-organizing network Download PDFInfo
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Abstract
The invention relates to a management structure for a distributed dynamic self-organizing network, which consists of a network management server, a distributed network agent (DNA) and a managed device, and is used for establishing a DNA management network maintenance and communication mechanism based on peer-to-peer. The DNA is a basic unit of a system for monitoring, managing and controlling a network based on self-organization, and is in charge of managing, monitoring and collecting management information of the managed device and self nodes in a management group thereof; simultaneously, a DNA management network is established between DNAs in a peer-to-peer mode based on the peer-to-peer, performs inquiry and communication based on a distributed hash table, shares network management information at a database level, and transmits information by adopting a general extensible markup language format; and the DNA sends required network management information to the network management server periodically, or when the network management server sends a request to the DNA, the DNA transmits statistic information of a correlative management information base to the network management server.
Description
Technical field
The present invention is directed to self-organizing network do not have control centre, fully characteristics such as distributing architecture, dynamic network topology structure, especially topology often change, smaller bandwidth, the energy and the very limited mobile ad-hoc network of internal memory.
Background technology
There is not central controlled entity in the ad hoc network system, directly shared resource and service between the node, has the status of independence and equality completely, make that self-organizing network has flexibly, no center, self-organizing, extensibility are strong, load balance and good characteristics such as survivability, file-sharing, content distribution, collaborative calculating and aspect such as instant messaging and military affairs, sensor network, urgent occasion, dynamically interim occasion and commercially all be widely used.Self-organizing network will be the principal mode of present and future network, plays an important role.
But continuous development and successful Application along with self-organizing network, people have proposed higher service request, as from clear data transmission, pure voice transfer and video transmission that certain restriction is arranged, comprehensive transmission to voice, data, image, this just requires network to have certain QoS (Quality of Service, service quality) assurance ability.Self-organizing network for no control centre, complete distributing architecture, dynamic network topology structure, especially topology often changes, smaller bandwidth, the mobile ad-hoc network that the energy and internal memory are very limited, the difficulty of aspects such as network management, QoS guarantee, safety and application in real time is bigger.Traditional centralized network ma nagement is because of the management expectancy of the not competent complex dynamic networks of shortcoming such as single point failure, poor expandability, and present distributed network management model, connect and DCOM (distributedcomponent object model as immediate data, the distributed component object pattern) mode, data and application program are distributed in a plurality of nodes, network is divided into a plurality of management domains, and determining, gather and reporting of therefore relevant with network management data becomes quite difficult.This patent has proposed the novel communication mechanism that is applicable to dynamic self-organization Network Management system, can solve that immediate data connects and the DCOM mode the distributed data sharing problem in can not the distributed network management system of fine solution.
Summary of the invention
Technical problem: the objective of the invention is to propose the management method of distributed dynamic self-organizing network, safeguard the reciprocity supervising the network of forming by DNA (distributed network management agency), realize that the effective management information between each management node is mutual and shared.
Technical scheme: there are a lot of limitation in the network management architecture of traditional suitable static network because of poor performance such as its extensibility, flexibility, maintainability and reliabilities, the present invention proposes the novel dynamic self-organization Network Management system that is applicable to, mainly be the design of the communication module of this distributed management system, to realize effective self-organizing network management.
The managerial structure of distributed dynamic self-organizing network is made up of network management server, distributed network agency-DNA and managed device, makes up based on point-to-point DNA supervising the network to safeguard and communication mechanism; DNA is based on the elementary cell of network monitor, management and the control system of self-organizing, the management information of being responsible for management in its management group, monitoring and collecting managed device and self node; Simultaneously, set up based on point-to-point DNA supervising the network with Peer between the DNA, inquire about and communicate by letter based on distributed hashtable, shared network management information on the database rank, message transmission adopts general extend markup language form; DNA regularly sends required network management information to NM server, perhaps when NM server when DNA sends request, the statistical information that this DNA transmits relevant management information bank arrives NM server.
Structure is as follows based on point-to-point DNA supervising the network maintenance and communication mechanism:
DNA chooses and substitute
1) select DNA according to unified utility function value, utility function is by influencing factor: cpu busy percentage, can obtain bandwidth, free memory, disk space size, current process number and online hours and form;
2), determine that each DNA institute is treatable by count quantity with online DNA of tube coupling according to the computation complexity and the resource cost situation of DNA disposal ability, inquiry overall delay, DNA management function;
3) adopt standby DNA mechanism, the choice criteria of standby DNA and DNA are same, and standby DNA quantity is dynamically determined by network, elects the node copy backup current dna management information of standby DNA as, when DNA rolls off the production line or lost efficacy, upgrades to DNA, realizes taking over seamlessly;
4) replacement of DNA: the performance of basis itself is determined the role in the network during node login, the node of better performances adds network as the DNA identity, when existing DNA lost efficacy, if the difference of online DNA number and regulation DNA number is less than certain threshold values, standby DNA just upgraded to DNA; If the online DNA number is counted threshold values greater than the node number of certain threshold values and this group less than desired minimum node with the difference of regulation DNA number, then the node of this group is moved to other groups;
Node is registered, logins, adds, withdraws from and is safeguarded
1) node comprises general node Peer and DNA, when initial all with the identity of ordinary node to server registration, server distribution webmaster agent software, and the agreement and the software that add supervising the network,
2) in node when login,, NM server calculates and also upgrades the utility function value according to the performance parameter and the historical online hours of each node that obtains, and determines the identity of node according to its value of utility and online DNA quantity,
3) general node selects the near DNA in geographical position to add, and the DNA node adds reciprocity supervising the network, and opens management function, exercises the responsibility of DNA,
4) general node withdraws from node and the resource information that only updates stored in its DNA node, and withdraw from switching or the general node of subordinate that then need carry out standby DNA of DNA move to other DNA, lost efficacy unusually by regular detection perception,
5) stability and the consistency of the structurized distributed hashtable maintaining network of employing.
1 distributed network management traffic model
Distributed network management traffic model based on self-organizing mainly is made up of three parts: NM server, distributed network agency (DNA) and managed device.DNA is based on the elementary cell of network monitor, management and the control system of self-organizing, is responsible for the management information that management in its management group, monitoring and collection have artis, realizes distributed network management.Form point-to-point supervising the network with Peer between the DNA and communicate, share network management information on the database rank, message transmission adopts general extend markup language form.DNA can regularly send required network management information to NM server, perhaps when NM server when DNA sends request, the statistical information that this DNA transmits relevant MIB (Management Information Base management information bank) arrives NM server.Can alleviate the processing load of NM server like this, also reduce the management information traffic, in addition,, also not influence the management of DNA, just delay 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 service quality of user.
1.1 NM server function
NM server is mainly carried out following function:
◆ the node login service: when node was logined, NM server obtained each joint behavior parameter, calculated the utility function value of reflection joint behavior.
◆ DNA management: formulate the DNA selection strategy, determine the DNA proportion, promptly the ratio of DNA node number and all node numbers is safeguarded current online DNA tabulation.
◆ the announcement management; Safeguard the version updating of webmaster agent software and supervisory communications module, and be responsible for distribution webmaster agent software.
◆ management information is handled: the related administrative information that regularly receives or filter by acquisition request DNA, the maintenance management information database provides the foundation of holistic management.
◆ communication function: realize message parse and generation, promptly formulate the agreement of each message identifier position identification, processing and package.
1.2 distributed network is acted on behalf of choosing of (DNA) and is substituted
The reciprocity supervising the network that DNA constitutes should be able to need determine DNA quantity of throwing in and the node number that each DNA managed according to network size, with reliability and the restorability that obtains optimum query performance and realize network.
Determine the major influence factors that the DNA node is selected, as cpu busy percentage, can obtain bandwidth, free memory and online hours etc., formulate unified standard, select the strong node of stable performance, disposal ability, and formulate the replacement scheme of DNA as DNA.For preventing the influence that dynamic change caused of network, adopt the mechanism of standby DNA, and the quantity of determining standby DNA taking over seamlessly when realizing that current dna lost efficacy, ensure the stable of network.
1.3 node is registered, adds and is withdrawed from
Each by pipe node (comprising general node Peer and DNA) when initial all with the identity of ordinary node to server registration, server distribution webmaster agent software, and node corresponding adds the agreement and the software of supervising the network.Server record IP address, username and password are safeguarded an informational table of nodes.Contact server address when node lands, if unsuccessful, the DNA tabulation of preserving when then contact was last time successfully landed if can log on one of them DNA, is then transmitted associated packet on behalf of signing in to server by this DNA.After the node login, upgrade latest edition, determine node role (DNA or general node peer), open function corresponding.Upgrade resource information when general node withdraws from, DNA withdraws from and will start standby DNA when substituting, and notification server, group interior nodes and DNA supervising the network.
Beneficial effect: based on the distributed DNA managing network communication model of DHT realized with the node of geographical position perception login, add supervising the network, withdraw from, the selection of DNA, standby and substitute, and the design of network management services function.Wherein 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, and mutual with NM server.The DNA that is distributed in the network forms a self-organizing network, by design and formulation corresponding communication agreement, realize the efficient communication between the DNA, and the share class of MIB data is similar to sharing of file, can bring into play the technical advantage of self-organizing network and related protocol well and carry out data sharing.
Description of drawings
Fig. 1 is based on the DNA network management traffic model of DHT.
Fig. 2 is node login process figure.
Fig. 3 is that node adds the supervising the network procedure chart.
Fig. 4 is that the DNA node withdraws from and renewal process figure.
Embodiment
The foundation of 1 distributed network management traffic model
Distributed network management traffic model based on self-organizing mainly is made up of three parts: NM server, distributed network agency (DNA) and managed device.DNA is based on the elementary cell of network monitor, management and the control system of self-organizing, is responsible for the management information that management in its management group, monitoring and collection have artis, realizes distributed network management.Form the supervising the network (see figure 1) in P2P (peer-to-peer equity) mode between the DNA, communicate, on the database rank, share network management information by the communication mechanism of studying and defining.In order to realize sharing of information, stipulated the form of message transmission, i.e. XML (Extensive Makeup Language) file format.DNA can regularly send required network management information to NM server in addition, perhaps when NM server when DNA sends request, this DNA transmits the statistical information of relevant MIB (ManagementInformation Base management information bank) to NM server.
2 maintenance of DNA supervising the network and communication mechanisms based on point-to-point (P2P)
The P2P network generally is divided into the smooth complete distributed network structure and the mixed network structure of classification, and the latter divides network in groups by certain rule, and the strong node of disposal ability is a super node in the election group usually, forms the architecture of two-stage.Be super node in the P2P mixed structure based on the DNA in the distributed management network of DHT, with respect to smooth full distributed P2P network, help the expansion of network, and can reduce the query messages quantity that sends in Search and Orientation jumping figure between each DNA and the communication process and the traffic of DNA network operation.The DNA network communication mechanism of native system is as follows:
2.1 NM server function
NM server is mainly carried out following function:
◆ the node login service: when node was logined, NM server obtained each joint behavior parameter, calculated the utility function value U of reflection joint behavior.Determine that according to the DNA quantity in U value rank and the network this node adds network with DNA or general node (Peer) identity, and the online DNA tabulation is provided.In addition, the node login module needs Maintenance Point utility function table, statistics node number and current dna number.
◆ DNA management: formulate the DNA selection strategy, determine the DNA proportion, promptly the ratio of DNA node number and all node numbers safeguards that current online DNA tabulation is (owing to there is the contact of management information between DNA and server, incidentally lastest imformation need not to send in addition detection information).
◆ announcement management: safeguard the version updating of webmaster agent software and supervisory communications module, and at node (comprising general node Peer and DNA) when NM server register, be responsible for distributing the webmaster agent software.
◆ management information is handled: regularly receive or pass through the related administrative information of acquisition request DNA filtration, and the maintenance management information database, these information can be exported by graphical interface of user, and the foundation of holistic management is provided.
◆ communication function: realize message parse and generation, promptly formulate the agreement of each message identifier position identification, processing and package.The node login is adopted with the DNA management and is triggered and update mechanism, and modes such as periodic polling, request triggering are adopted in the acquisition of management information.It between NM server and the DNA C/S (client/server) pattern.
2.2 DNA chooses and substitute
(1) utility function of DNA selection
The DNA node must have public network address, and the influencing factor of selection mainly contains, and these influencing factors form a utility function U,
F wherein
iBe each influencing factor, a
iBe the weight of each influencing factor, each influencing factor can be obtained by system testing, and weight can regulate the utility function that form to be suitable for by actual conditions.
(2) DNA quantity determines
According to the response of logining and withdrawing from, server can obtain the node number of whole network, by set ratio (according to the computation complexity and the resource cost situation of DNA disposal ability, DNA management function, determine each DNA treatablely counted by tube coupling) and total node number of required management DNA number that can obtain to throw in approximately, perhaps determine that according to query time and query flows DNA accounts for the ratio of total node number.
(3) DNA's is standby
The U value that obtains during each node login will be carried among the group who is added, and be inserted in the utility function value U sequencing table of DNA of this group, each management group can be determined 2～3 standby DNA management nodes (being called for short standby DNA) according to the U value, and a relevant DNA information reproduction is in standby DNA.Regularly send detection information between DNA and the node (comprising standby DNA), whether online to determine node.When standby DNA in certain time length, do not receive any detection information of DNA, then send detectable signal and confirmed, if DNA do not have response, confirm that then it rolls off the production line, upgrade to DNA voluntarily, announcement server and subordinate are by pipe node simultaneously.If DNA normally leaves, can notify then wherein that the standby DNA of better performances upgrades to DNA, replace the responsibility of DNA.
(4) replacement of DNA
◆ in node when login,, NM server calculates and also upgrades utility function value U according to the performance parameter and the historical online hours of each node that obtains, and is inserted in the utility function value table that it safeguards.If the online DNA number is counted N less than the DNA of regulation, and this node U value come in the utility function value table before the N position, then this node is chosen as the DNA node, downloads the DNA functional module, and adding DNA supervising the network.Otherwise, surveying DNA according to the DNA tabulation that NM server returns, a plurality of DNA fail or RTT surpasses threshold value if connect, and then this node forms new management group from electing DNA as.If within the RTT threshold value, the DNA echo probe is arranged, then this node joins the wherein DNA of RTT minimum with the ordinary node identity.
◆ when an existing DNA lost efficacy, if the difference of online DNA number and regulation DNA number is less than certain threshold values, standby DNA just upgraded to DNA originally; If the online DNA number is counted threshold values greater than the node number of certain threshold values and this group less than desired minimum node with the difference of regulation DNA number, then the node of this group is moved to other groups.
2.3 node registration
When node (comprising general node Peer and DNA) is initial all with the identity of ordinary node to server registration, server distribution webmaster agent software, and node corresponding adds the agreement and the software of supervising the network.Server record IP address, username and password are safeguarded an informational table of nodes Peer_info.(afterwards in service increases average online hours field, is determined by login times and total online hours)
2.4 node lands (see figure 2)
Contact server address when node lands, if three times are landed unsuccessful, as network congestion, then got in touch when successfully landing last time the DNA tabulation that RTT＜T1 (threshold value of T1 for setting) of preserving returns, if can log on one of them DNA, then transmit associated packet on behalf of signing in to server, and return corresponding announcement and U utility function by this DNA.
2.5 node adds the supervising the network (see figure 3)
After the node login, performance parameter and software version number that node can send this machine arrive server, and the latest edition of safeguarding in the software version of NM server meeting comparison node and the server is if inconsistent then down loading updating is to node.Simultaneously, calculate and also upgrade utility function value U, and be inserted in the utility function value table that it safeguards according to the performance parameter and the historical online hours of each node that obtains.If the online DNA number is counted N less than the DNA of regulation, i.e. N
On＜N, and this node U value come in the utility function value table before the N position, illustrate that the DNA node is counted deficiency in the supervising the network, and this node possesses the superperformance of serving as DNA, so this node is chosen as the DNA node, downloads the DNA functional module, and add the DNA supervising the network.
Otherwise, survey DNA in batches according to the DNA tabulation that NM server returns, a plurality of DNA fail or RTT surpasses threshold T 1 (illustrating that distance is far away between this node and these DNA) if connect, and then this node is from electing DNA as, form new management group, and the announcement NM server.If within the RTT threshold value, the DNA echo probe is arranged and agree that reception is (according to the DNA ratio of setting, the managed device number of the processing of each DNA as can be known, or whether receive application) by the decision of the disposal ability of DNA, then this node joins the wherein minimum DNA of RTT (round trip time, round-trip delay) with the ordinary node identity.Here the selection of T1 is crucial, and T1 is less, and node is created new group owing to can not find suitable group, and group quantity is increased, and when each DNA withdraws from, because the DNA number too much and easily caused the merging of multigroup, brings a lot of maintenance workloads like this; And that T1 selects is too much, makes that then each node and DNA in the group are far away on the geographical position, is unfavorable for quick pass-along message, and the possibility of signal covering that node breaks away from this group is also bigger.
The new group's of adding Peer provides the U value that obtains from server to DNA, is inserted in the U value sequencing table of each peer of DNA, is used to look for suitable standby DNA node.Submit IP and the Resources list information simultaneously to.And DNA is except the U of updating maintenance table and resource index off-balancesheet, and the joining day that also will write down this node is to register its online hours., also send relevant peer online hours, and inform that this peer of server (or a collection of peer) withdraws from regularly when server sends management information at DNA, deletion from the line node tabulation, and upgrade this node and login total duration.
2.6 DNA withdraws from and substitutes (Fig. 4)
When DNA withdraws from or is detected unusual inefficacy, if online DNA is counted N
OnExceed certain threshold values T with the difference of setting the DNA number
Nmin, and the peer number illustrate that less than certain threshold values online DNA quantity is too much in the group, and this group members is less, then disbands this group, can be by one or more groups of close receptions, or survey DNA separately again and add.Corresponding list item in while update service device and the DNA network.
Otherwise will start standby DNA (because DNA can directly enable regularly to standby DNA backup relevant information), announcement server, group's interior nodes, and DNA supervising the network are by the maintenance that manages network based on the P2P structured network maintenance mechanism of DHT.
2.7 general node Peer withdraws from
Because DNA is regularly sending out detection packet to each peer always, survey the response of not receiving Peer as DNA, (not exceeding in the k*RTT not respond) thinks that then this peer withdraws from, list item in the change index list, upgrading group's internal segment counts, and the life cycle of this time of record node, upgrade standby DNA simultaneously.When peer normally rolled off the production line certainly, the notice of can giving out a contract for a project DNA with renewal DNA, and when DNA regularly visits server, upgraded the relative recording of peer in server.
2.8 the maintenance of DNA network
Adopt structurized DHT pattern, adopt the maintaining method of mature C hord or Kad network, safeguard DHT stability of network and reliability.
The starting stage that the DNA network forms, because the spread in performance of each DNA is uneven, the DHT network is upheaval relatively, but when network enters stable state relatively, because the DNA that election is come out has relative preferable performance, so the DNA network is also more stable reliable.
The method that substitutes is the IP address of adopting Hash group ID rather than Hash DNA, and when DNA node number kept relative stability, the workload of network operation was relatively very little, because the just replacement of DNA is not upgraded for the DHT network.
Claims (2)
1. the managerial structure of a distributed dynamic self-organizing network, it is characterized in that: this managerial structure is made up of network management server, distributed network agency-DNA and managed device, makes up based on point-to-point DNA supervising the network to safeguard and communication mechanism; DNA is based on the elementary cell of network monitor, management and the control system of self-organizing, the management information of being responsible for management in its management group, monitoring and collecting managed device and self node; Simultaneously, set up based on point-to-point DNA supervising the network with Peer between the DNA, realize communicating by letter with shared of network management information by safeguarding based on point-to-point DNA supervising the network with communication mechanism, message transmission adopts general extend markup language form; DNA regularly sends required network management information to NM server, perhaps when NM server when DNA sends request, the statistical information that this DNA transmits relevant management information bank arrives NM server.
2. the managerial structure of distributed dynamic self-organizing network according to claim 1 is characterized in that making up based on point-to-point DNA supervising the network maintenance and communication mechanism as follows:
DNA chooses and substitute
1) select DNA according to unified utility function value, utility function is by influencing factor: cpu busy percentage, can obtain bandwidth, free memory, disk space size, current process number and online hours and form;
2), determine that each DNA institute is treatable by count quantity with online DNA of tube coupling according to the computation complexity and the resource cost situation of DNA disposal ability, inquiry overall delay, DNA management function;
3) adopt standby DNA mechanism, the choice criteria of standby DNA and DNA are same, and standby DNA quantity is dynamically determined by network, elects the node copy backup current dna management information of standby DNA as, when DNA rolls off the production line or lost efficacy, upgrades to DNA, realizes taking over seamlessly;
4) replacement of DNA: the performance of basis itself is determined the role in the network during node login, the node of better performances adds network as the DNA identity, when existing DNA lost efficacy, if the difference of online DNA number and regulation DNA number is less than certain threshold values, standby DNA just upgraded to DNA; If the online DNA number is counted threshold values greater than the node number of certain threshold values and this group less than desired minimum node with the difference of regulation DNA number, then the node of this group is moved to other groups;
Node is registered, logins, adds, withdraws from and is safeguarded
1) node comprises general node Peer and DNA, when initial all with the identity of ordinary node to server registration, server distribution webmaster agent software, and the agreement and the software that add supervising the network,
2) in node when login,, NM server calculates and also upgrades the utility function value according to the performance parameter and the historical online hours of each node that obtains, and determines the identity of node according to its value of utility and online DNA quantity,
3) general node selects the near DNA in geographical position to add, and the DNA node adds reciprocity supervising the network, and opens management function, exercises the responsibility of DNA,
4) general node withdraws from node and the resource information that only updates stored in its DNA node, and withdraw from switching or the general node of subordinate that then need carry out standby DNA of DNA move to other DNA, lost efficacy unusually by regular detection perception,
5) stability and the consistency of the structurized distributed hashtable maintaining network of employing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101873592A (en) * | 2010-06-30 | 2010-10-27 | 北京航空航天大学 | Dynamic management device for heterogeneous wireless equipment |
| CN102111316A (en) * | 2011-03-22 | 2011-06-29 | 广州海格通信集团股份有限公司 | Automatic networking method of network system |
| WO2012037899A1 (en) * | 2010-09-25 | 2012-03-29 | Hangzhou H3C Technologies Co., Ltd. | A method for acquiring station information |
| CN103227817A (en) * | 2013-03-28 | 2013-07-31 | 广东省电信规划设计院有限公司 | Super node selecting method and system based on P2P (peer-to-peer) network |
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| CN101873592A (en) * | 2010-06-30 | 2010-10-27 | 北京航空航天大学 | Dynamic management device for heterogeneous wireless equipment |
| CN101873592B (en) * | 2010-06-30 | 2012-09-05 | 北京航空航天大学 | Dynamic management device for heterogeneous wireless equipment |
| WO2012037899A1 (en) * | 2010-09-25 | 2012-03-29 | Hangzhou H3C Technologies Co., Ltd. | A method for acquiring station information |
| CN102111316A (en) * | 2011-03-22 | 2011-06-29 | 广州海格通信集团股份有限公司 | Automatic networking method of network system |
| CN103227817A (en) * | 2013-03-28 | 2013-07-31 | 广东省电信规划设计院有限公司 | Super node selecting method and system based on P2P (peer-to-peer) network |
| CN103227817B (en) * | 2013-03-28 | 2016-08-17 | 广东省电信规划设计院有限公司 | P2P super node of network system of selection and system |
| CN104809593A (en) * | 2015-05-12 | 2015-07-29 | 华北电力大学 | Distributed type parallel computation management method of power system |
| CN104809593B (en) * | 2015-05-12 | 2019-01-15 | 华北电力大学 | Electric system Distributed Parallel Computing management method |
| CN106982142A (en) * | 2017-04-13 | 2017-07-25 | 北京邮电大学 | The method and device of key node in a kind of determination topological network |
| CN106982142B (en) * | 2017-04-13 | 2019-11-08 | 北京邮电大学 | The method and device of key node in a kind of determining topological network |
| CN108322559A (en) * | 2018-01-16 | 2018-07-24 | 吉浦斯信息咨询（深圳）有限公司 | Mobile device dynamic address cut-in method, system and medium |
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