CN1394036A - Network management system based on strategy - Google Patents
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- CN1394036A CN1394036A CN 01129462 CN01129462A CN1394036A CN 1394036 A CN1394036 A CN 1394036A CN 01129462 CN01129462 CN 01129462 CN 01129462 A CN01129462 A CN 01129462A CN 1394036 A CN1394036 A CN 1394036A
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Abstract
The invention discloses the network management system based on the strategies. The system includes the directory server, the multiple strategies management tools connected to the said directory server, the tools for input the strategies, the multiple WEB browsers connected to the said strategies management tools, the XML parser, the PDP connected to the said XML parser as well as the multiple PEP connected to the PDP. The CORBA, LDAP and HTTP mechanism are adopted in the system communication. The format of the XML data structure is utilized for realizing the data transferring in the whole system. The above configuration makes the invention become the all distributed networked management system providing the features of the good expandability, easy of maintenance and independent to the hardware in the bottom layer.
Description
The present invention relates to the network management system in the data communication field.
In recent years, along with the communication service development, the scale of communication network constantly enlarges, class of business gets more and more and presents customization trend, this just requires the management of communication network must catch up with network and professional development, offer the more simple and efficient webmaster instrument of network user, and the bigger management ken.Network management is at present just progressively managed transition from the NE-level management to network level management, service level, has become an important directions of network management technology development based on the network management of strategy.Network management system based on tactical management generally includes Group Policy Management Console, policy database, PDP (policy decision point) and PEP (Policy Enforcement Point).The user is by the Group Policy Management Console input policing, and policy store is in LIST SERVER or database, and PDP is by database protocol access strategy storehouse, and carries out passing to PEP under the strategy, between PDP and the PEP with tactful interaction protocol communication.In the said system structure, PDP and PEP are adopted centralized way to manage, the COPS agreement is all adopted in the communication of intermodule, because COPS agreement inside is the on-link mode (OLM) of TCP, each call request need be set up a TCP link, like this, policy management tool may be set up TCP with all PDP modules simultaneously and link, because in a large-scale network, PDP, the PEP module is a lot, if the TCP number of links of Jian Liing is very big simultaneously, over-burden will to cause policy management tool or PDP module, causes very big communications burden therefore will inevitably for whole communication network.In addition, state in realization in the process of system configuration, policing rule adopts the data structure of high-level language to express usually, owing to all relate to the transmission of policing rule at all intermodules, therefore, transmission each time all will be carried out conversion between data structure so that adapt to the transfer of data requirement of communications protocol, this just need be to different Data Structure Design different data conversion functions.Because user's demand is constantly to change, along with the variation of user's request, the data structure of policing rule also can change, and this just must have influence on internal system data structure transform mode.Therefore, for said system, as long as each user's demand changes to some extent, just need upgrade this system again, processing policy rule in the manner described above causes the extensibility of system, adaptability undesirable.
The objective of the invention is to: the full distributed network management system based on strategy that a kind of extensibility is good, easy to maintenance, be independent of bottom hardware is provided.
For achieving the above object, network management system based on strategy provided by the invention, comprise: LIST SERVER, the a plurality of policy management tools, the tactful input tool that are connected with described LIST SERVER 5, the a plurality of WEB browsers that are connected with described policy management tool 2, XML (extend markup language) resolver, the PDP (policy decision point) that is connected with described XML resolver, and a plurality of PEP (Policy Enforcement Point) that are connected with PDP;
Described policy management tool, be used for adopting LDAP (agreement of visit LIST SERVER) agreement to carry out the mutual of strategy with described LIST SERVER, finish the deletion of policing rule and the grammer of modification and policing rule, the semantic detection, policing rule is downloaded to described PDP, handle the data that PDP reports, and the connecting interface with described WEB server is provided;
Described LIST SERVER is used to receive and store the policing rule of importing by described tactful input tool;
Described tactful input tool is realized the client of ldap protocol, sets up C/S (client/server) with the service end of the ldap protocol of LIST SERVER and links, and imports user-defined policing rule to LIST SERVER;
Described WEB browser adopts HTTP (hypertext link language) agreement to be connected with described policy management tool, is used for providing to the user browsing pages of browse network management;
Described XML resolver is connected by CORBA (a kind of software communication bus) bus with described policy management tool; Be used to accept the policing rule of biography under the described policy management tool, the data in the parses policy regular data structure are so that described PDP handles;
Described PDP, be connected by COPS (general open policy service) agreement with described PEP, be used to receive device port role and the device capability information that described PEP equipment reports, from catalog data base, take out by means of the XML resolver according to this information and pass to described PEP equipment under the corresponding strategy;
Described PEP is used to receive the strategy that passes under the described PDP and is converted to the mechanism that equipment can be carried out, and transformation result is reported to described PDP;
The form of XML data structure is all adopted in all policing rule transmission on the above-mentioned PDP module.
Described policy management tool comprises: WEB server, network management platform and CORBA server;
Described WEB server is used to deposit the tactical management cross section, policing rule is write in the described LIST SERVER information of coming according to the configuration and the treatment facility feedback of the modifications facility information of strategy by ldap protocol;
Described network management platform is used to obtain facility information, and whether the policing rule of detect downloading effectively and the configuration of carrying out equipment, carries out unified management to the whole network;
Described CORBA server, be used for accepting the message of the policing rule change of process detection from network management platform, from LIST SERVER, to take out corresponding policing rule, the request that response PDP sends, the information that acquisition equipment reports, and from LIST SERVER, get corresponding policing rule by ldap protocol and download to PDP; Also need simultaneously the equipment plurality of reported messages is reported the remote client.
The present invention also comprises a plurality of Agent (proxy module) that are connected with described PDP and a plurality of equipment that are connected with described Agent.
Advantage of the present invention is:
(1) because the present invention is transmitted the form that adopts the XML data structure at definition, access and all policing rules on the PDP module of policing rule, extensibility is good, has simplified operation, and is easy to maintenance.
(2) because the present invention adopts the form of a plurality of policy management tools, each policy management tool is only managed limited PDP, has alleviated the burden of policy management tool.
(3) because the present invention is stored in the All Policies rule in the LIST SERVER, discharged the hard work in policy management tool and PDP maintenance strategy storehouse, simultaneously, than fast by traditional ODBC (connection of open type data storehouse) access relational databases, the efficient of access strategy rule is than higher by ldap protocol visit LIST SERVER.
(4) the present invention comes to import policing rule to LIST SERVER by the policing rule input tool of a special use, make the policing rule management tool only when change or deletion strategy rule, just carry out write operation to LIST SERVER, because change or deletion action action are seldom, have avoided to the inefficient defective of LIST SERVER write data.
(5) policy management tool of the present invention comes distributed management PDP by the CORBA technology, can avoid managing concentratedly inefficient defective.
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the embodiments of the invention block diagrams;
Fig. 2 is the policing rule input flow chart of the embodiment of the invention;
Fig. 3 is the workflow diagram of the WEB server of the embodiment of the invention.
The employing that traditional network management system has is centralized, makes policy management tool or PDP module burden too heavy; What have is undue in the equipment that overweights oneself, combines too closely with bottom hardware, makes that the versatility of system is not strong.For addressing the above problem, distributed flexible bus communication modes--the CORBA that adopts in the system of the present invention is to solve the too heavy harmful effect of burden that centralized network ma nagement was brought.
In the network management system based on strategy, the carrier of the most basic information unit is a policing rule.Each bar policing rule all is with＜condition, behavior 〉, promptly＜If......, then...... form occur.Wherein condition is meant this policing rule specifically need be carried out which point in the network, and when limit etc., each sub-condition combines by the normal form form of " AND " and " OR ", after behavior satisfies condition, and the operational motion of the required execution of network.Serve system in order to make above-mentioned policing rule better, the present invention adopt extensibility preferably the XML language come the definition strategy rule, in system, data are with the form transmission of XML data structure, only when downloading to policing rule in the equipment, just need do the conversion of data structure, conversion need not done in other place.Because XML is the complete technology of a cover, it has defined the method for a cover storing X ML file internal data specially, and promptly therefore the XML resolver does not need to do the work that data structure transforms.Simultaneously, if user's demand changes, only need to change the data structure document of XML, whole system need not upgraded, because the XML resolver can adapt to this kind variation.
Fig. 1 is the embodiments of the invention block diagrams.Management system 1 based on strategy shown in Figure 1 comprises: LIST SERVER 5, the a plurality of policy management tools 2, the tactful input tool 4 that are connected with described LIST SERVER 5, the a plurality of WEB browsers 3, the XML resolver 6 that are connected with described policy management tool 2, the PDP that is connected with described XML resolver 6, and a plurality of PEP that are connected with PDP.
Described policy management tool 2, be used for adopting ldap protocol to carry out the mutual of strategy with described LIST SERVER, finish the deletion of policing rule and the grammer of modification and policing rule, the semantic detection, policing rule is downloaded to described PDP, handle the data that PDP reports, and the connecting interface with described WEB server is provided.
In the module of whole policy management tool 2, policing rule all transmits, stores with the form of XML data structure.Simultaneously,, many PDP modules are arranged if the network of management is bigger, if allow all PDP modules all with a policy management tool communication, certainly will cause policy management tool burden too heavy, inefficient consequence.In this case, can take the mode of a plurality of policy management tools, the PDP module that allows each policy management tool module manage limited quantity respectively improves communication efficiency, reaches effect of load balance.Couple together by LIST SERVER between policy management tool, each policy management tool only needs from LIST SERVER access strategy rule, and LIST SERVER has the function of data sync.
Described LIST SERVER 5 is used to receive and store the policing rule of importing by described tactful input tool.Can be in specific implementation with the form of tree storage data, and the ldap protocol by proprietary access LIST SERVER comes the data in the fast access Directory Server tree type structure.The LIST SERVER that the present invention adopts is compared with relational database, has sense data efficient height, the inefficient characteristic of write data.
Described tactful input tool 4 is realized the client of ldap protocol, sets up C/S with the service end of the ldap protocol of LIST SERVER and links, and imports user-defined policing rule to LIST SERVER; Because in network management system, generally all signed SLA (service level agreement) agreement with the user in advance, in the network operation process again in the LIST SERVER chance of write operation fewer.According to these characteristics, in the present invention, adopt policing rule input tool module to come to make policy management tool only need make the operation of some a spot of modifications, deletion strategy rule, alleviate the burden of policy management tool to the LIST SERVER write data to described LIST SERVER input policing rule.The workflow of this module is with reference to figure 2.Described WEB browser 3 adopts http protocol to be connected with described policy management tool, is used for providing to the user browsing pages of browse network management; During the configuration information of the network configuration information interface input policing rule that provides by described WEB browser 3 in step 1 as the user, carrying out grammer at step 2 pair described configuration information detects, if grammer detect not by execution in step 7 inquiry users whether revise, if the user agrees to revise and promptly turns back to described step 1 and re-enter or revise; If the grammer detection is passed through, then carry out semanteme and detect in step 3, if semantic the detection do not passed through, still whether execution in step 7 inquiry users revise, if the user agrees that modification promptly turns back to described step 1 and re-enters or revise; If semantic the detection passed through, then judge in step 4 whether the configuration information of user's input has surpassed the scope of regulation, if overrun, whether same execution in step 7 inquiry users revise, if the user agrees that modification promptly turns back to described step 1 and re-enters or revise; If do not overrun, then the configuration information of the user being imported in step 5 is converted into the form of policing rule, and last execution in step 6 is written to described policing rule in the LIST SERVER.
Described XML resolver 6 is connected by CORBA (a kind of software communication bus) bus with described policy management tool; Be used to accept the policing rule of biography under the described policy management tool, the data in the parses policy regular data structure are so that described PDP handles.
Described PDP7 is connected by the COPS agreement with described PEP8, according to the PIB form transmission policy content of standard, and policy execution result is handled.It is used to receive device port role and the device capability information that described PEP equipment reports, and takes out from catalog data base by means of the XML resolver according to this information and passes to described PEP equipment under the corresponding strategy.More particularly, it is used to finish following operation: receive the information of the relevant strategy modification that passes under the policy management module, and handle accordingly; According to the information that PEP reports, the inquiry respective rule; Policing rule is converted to the PIB form; With the COPS agreement policing rule is downloaded among the PEP and to go.
Described PEP8 is used to receive the strategy that passes under the described PDP and is converted to the mechanism that equipment can be carried out, and transformation result is reported to described PDP.A PDP can manage a plurality of PEP.
The form of XML data structure is all adopted in all policing rule transmission of the present invention on described PDP module, like this, SLA can be embedded in the XML data structure, the XML data structure is exactly a policing rule, will be converted into policing rule the structure of PIB (policy information base), described XML resolver at first must come out the data parsing among the XML.In the reality, for the ease of the visit of XML policy data structure to definition, the present invention has encapsulated one group of api function interface 61 that one deck externally provides again on the kernel of described XML resolver.
Described WEB server 22 is used to deposit the tactical management cross section, policing rule is write in the described LIST SERVER information of coming according to the configuration and the treatment facility feedback of the modifications facility information of strategy by ldap protocol.
Described WEB server 22 is actually a syntax and semantics detection system, it have the tactical management interface webpage, access LIST SERVER data the ldap protocol client-side program and with mutual SOCKET (socket) client-side program of network management platform module.Specifically, it need be finished:
(1) when importing a new policing rule by the WEB interface or revising existing policy rule information, needs write this policing rule in the LIST SERVER by the ldap protocol communication mechanism; When by policing rule of WEB interface deletion, also need to give an order so that delete the corresponding strategy rule that is stored in the LIST SERVER by the ldap protocol communication mechanism.
(2) when by WEB interface input, when revising and deleting a policing rule, need initiatively trigger the network management interface application program, so that initiatively revise the configuration of network equipment information according to the variation of policing rule by the SOCKET communication mechanism.
(3) handle the information that the slave unit feedback is come at any time.These feedback informations comprise whether strategy successfully downloads to equipment, and whether equipment has done the implementation status of corresponding configuration, and the warning message of equipment or network etc.Fig. 3 is the workflow diagram of the WEB server of the embodiment of the invention, and this flow process does not comprise the information that the slave unit feedback is come.When the user when step 1 is carried out the operation of policing rule by the WEB interface, step 2 couple user's operation judges that if the user does not operate policing rule, then execution in step 8 is done power cut-off, policing rule is not done any processing; If the user operates policing rule, then judge in step 3 what operation the user has specifically carried out, if increased policing rule, while execution in step 4 and step 6, trigger network management platform 22, newly-increased policing rule is configured in the equipment, and LIST SERVER also stores the policing rule of corresponding increase; If revised policing rule, then while execution in step 5 and step 6 trigger network management platform 22, and amended policing rule is reconfigured in the equipment, and LIST SERVER also stores the policing rule of corresponding modify, promptly original policing rule is refreshed; If deleted policing rule, then while execution in step 7 and step 6 trigger network management platform 22, and deletion has been configured to the policing rule in the equipment, and LIST SERVER is also deleted corresponding policing rule; If other operation, directly execution in step 8 is done power cut-off, policing rule is not done any processing.
Described network management platform 22 is used to obtain facility information, and whether the policing rule of detect downloading effectively and the configuration of carrying out equipment, carries out unified management to the whole network.Described network management platform 22 needs to realize the SOCKET service end, so that carry out interaction data with the WEB server by the SOCKET communication mechanism.
Described CORBA server 23 is embedded in the reality in the process of network management system, plays a part to form a connecting link.Hold, accept the message of the policing rule change of process detection, so that from LIST SERVER, take out corresponding policing rule from network management platform.Open down, response PDP is the request that CORBA client sends, and just the information that equipment reports is obtained from PDP, gets corresponding policing rule by ldap protocol from LIST SERVER again and downloads to PDP; Also need simultaneously the equipment plurality of reported messages as warning message, is reported the remote client.
In system of the present invention, owing to need each equipment that the client of COPS agreement must be provided by the PDP management, if equipment does not provide this function, for example only support SNMP (Simple Network Management Protocol) network management protocol, a proxy module agent who supports the COPS protocol client just need be set, corresponding configuration order be passed in the equipment by under the SNMP by agent.Therefore, the present invention also comprises a plurality of Agent9 that are connected with described PDP and a plurality of equipment 10 that are connected with described Agent9.
Use the network management system based on strategy provided by the invention, the user satisfies the policing rule data of an own sexual demand by the input of WEB interface, editor, after the WEB server receives these user data, these data conversion are become the policing rule form of describing with the XML data file structure by embedded XML resolver, call the LDAP client-side program of access LIST SERVER, the form of these policing rules with data file integral body is deposited in the LIST SERVER.Simultaneously, activate the SOCKET client-side program, obtain the policing rule of the XML version of harsh one-tenth by the SOCKET server program in the network management platform, through the grammatical and semantic inspection, the determination strategy rule whether with existing policing rule content conflicts, and detect network performance and whether satisfy the defined performance of user, if all detections are passed through smoothly, then the policing rule of XML structure is downloaded among the corresponding PDP by distributed protocol CORBA, go out desired network configuration information by the XML resolver resolves among the PDP, download in the network equipment by the COPS agreement again, so that the network equipment is implemented the defined strategy of user, satisfy the performance requirement that the user needs transmitted data on network.
Claims (3)
1, a kind of network management system based on strategy, comprise: LIST SERVER, the a plurality of policy management tools that are connected with described LIST SERVER, tactful input tool, the a plurality of WEB browsers that are connected with described policy management tool, XML (extend markup language) resolver, the PDP (policy decision point) that is connected with described XML resolver, and a plurality of PEP (Policy Enforcement Point) that are connected with PDP;
Described policy management tool, be used for adopting LDAP (agreement of visit LIST SERVER) agreement to carry out the mutual of strategy with described LIST SERVER, finish the deletion of policing rule and the grammer of modification and policing rule, the semantic detection, policing rule is downloaded to described PDP, handle the data that PDP reports, and the connecting interface with described WEB server is provided;
Described LIST SERVER is used to receive and store the policing rule of importing by described tactful input tool;
Described tactful input tool is realized the client of ldap protocol, sets up C/S (client/server) with the service end of the ldap protocol of LIST SERVER and links, and imports user-defined policing rule to LIST SERVER;
Described WEB browser adopts HTTP (hypertext link language) agreement to be connected with described policy management tool, is used for providing to the user browsing pages of browse network management;
Described XML resolver is connected by CORBA (a kind of software communication bus) bus with described policy management tool; Be used to accept the policing rule of biography under the described policy management tool, the data in the parses policy regular data structure are so that described PDP handles;
Described PDP, be connected by COPS (general open policy service) agreement with described PEP, be used to receive device port role and the device capability information that described PEP equipment reports, from catalog data base, take out by means of the XML resolver according to this information and pass to described PEP equipment under the corresponding strategy;
Described PEP is used to receive the strategy that passes under the described PDP and is converted to the mechanism that equipment can be carried out, and transformation result is reported to described PDP;
The form of XML data structure is all adopted in all policing rule transmission on the above-mentioned PDP module.
2, network management system according to claim 1 is characterized in that: described policy management tool comprises: WEB server, network management platform and CORBA server;
Described WEB server is used to deposit the tactical management cross section, policing rule is write in the described LIST SERVER information of coming according to the configuration and the treatment facility feedback of the modifications facility information of strategy by ldap protocol;
Described network management platform is used to obtain facility information, and whether the policing rule of detect downloading effectively and the configuration of carrying out equipment, carries out unified management to the whole network;
Described CORBA server, be used for accepting the message of the policing rule change of process detection from network management platform, from LIST SERVER, to take out corresponding policing rule, the request that response PDP sends, the information that acquisition equipment reports, and from LIST SERVER, get corresponding policing rule by ldap protocol and download to PDP; Also need simultaneously the equipment plurality of reported messages is reported the remote client.
3, network management system according to claim 2 is characterized in that: on described XML resolver, also comprise API (application programming interfaces) function interface that externally provides.
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| CN100592315C (en) * | 2008-08-29 | 2010-02-24 | 中国科学院软件研究所 | XACML policy rule checking method |
| CN101394312B (en) * | 2008-11-12 | 2011-06-01 | 烽火通信科技股份有限公司 | Method and system for managing and parsing XML format uni-disk protocol |
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| CN102158546A (en) * | 2011-02-28 | 2011-08-17 | 中国科学院计算技术研究所 | Cluster file system and file service method thereof |
| CN102158546B (en) * | 2011-02-28 | 2013-05-08 | 中国科学院计算技术研究所 | Cluster file system and file service method thereof |
| CN104598263A (en) * | 2014-12-04 | 2015-05-06 | 广州酷狗计算机科技有限公司 | Application program operation method and configuration file generating method and device |
| CN104598263B (en) * | 2014-12-04 | 2017-12-08 | 广州酷狗计算机科技有限公司 | Application program operation method, configuration file generation method and device |
| CN104836807A (en) * | 2015-05-11 | 2015-08-12 | 中国电力科学研究院 | Evaluation and optimization method for XACML (Extensible Access Control Markup Language) security strategy |
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