CN1288877C - Method for implementing bandwidth broker based on network management system - Google Patents
Method for implementing bandwidth broker based on network management system Download PDFInfo
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- CN1288877C CN1288877C CN 02143634 CN02143634A CN1288877C CN 1288877 C CN1288877 C CN 1288877C CN 02143634 CN02143634 CN 02143634 CN 02143634 A CN02143634 A CN 02143634A CN 1288877 C CN1288877 C CN 1288877C
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Abstract
The present invention provides a method for implementing a bandwidth broker based on a network management system, which is realized by using the bandwidth broker as an independent mould based on a network management platform. The bandwidth broker is realized by the interaction of information among the network management platform and a network management interface, network element management (the network management of specific equipment) and routers on the basis of the network management platform. Meanwhile, SNMP is used as a communication protocol between the bandwidth broker and network equipment. The method can flexibly and conveniently manage QoS resources of the network equipment, and thus, the present invention enhances the degree of automation.
Description
Technical field
Relate generally to internet network administrative skill of the present invention particularly is used for disposing automatically the bandwidth broker implementation method of the management system Network Based of the Internet service quality (Quality of Service, breviary are QoS) strategy.
Background technology
Bandwidth broker (Bandwidth Broker, breviary are BB) refers to that briefly those automatic admittance controls of carrying out according to the operating practice and the step of network regulation determine and the function of network equipments configuration.BB manages to the QoS resource in the localization according to the service level agreement in a certain territory (SLA).BB also is in charge of inter-domain communication, reaches the purpose of the SLA that regulates cross-domain border by communicating by letter with the bandwidth broker of adjacent networks.
SLA defines on the basis of convergence flow.Convergence flow is to carry out at all streams that have particular type of service (being the classified service encoded point) in the territory.Single stream can obtain resource from SLA by initiating resource allocation request (RAR).The responsibility of BB is exactly to coordinate the SLA aggregate resources in this territory of turnover and by the distribution and the control of RAR requested resource.
Fig. 1 shows the course of work of above-mentioned existing bandwidth broker.As shown in Figure 1, source host H1 initiates resource allocation request (RAR) (shown in flow process among the figure 11) to the BB in the territory, and BB determines whether to satisfy this request according to the resource of SLA regulation.If can satisfy this request, then the BB of BB in adjacent domains transmits this request, until arriving destination host H2 (in as figure shown in the flow process 12,13 and 14).If this destination host H2 receives this request, it can send resource allocation to the BB in the purpose territory and reply (RAA) (shown in flow process among the figure 15) so.BB is according to the QoS resource of each router communication in response message and the territory and configuration router, and transmits this RAA to the BB of adjacent domains, until arriving source host H1 (in as figure shown in the flow process 16,17 and 18).
Owing to lack the support of signaling between strong territory, the RAR request all is by (as phone, Email) realizing with outer mode at present.Network operator determines according to this request whether network has enough resources to meet consumers' demand, and disposes the resource of associated router then, so can't realize the automatic configuration of qos policy.
UCLA university (University of California, Los Angeles) has proposed a kind of use COPS, and (public open policy service protocol: Common Open Policy Service) agreement realizes the scheme of the automatic configuration of resource, as shown in Figure 2, after the user utilizes graphic user interface (GUI) input request, the qos parameter of being asked is downloaded to router by the COPS server.Agent on the router can be according to the QoS resource of this parameter configuration router.This scheme realizes the automation of disposing to a certain extent.Yet in this scheme, BB need safeguard the various information of router as a system independently, and management is comparatively complicated.The configuration of QoS resource like this must specified interface when configuration at interface on the other hand.If the user is the information (as source address, destination address etc.) of given data flow, the user also must obtain the outgoing interface of data flow at Designated Router according to these information so, and this can realize by TELNET modes such as (Telnets).But, no matter adopt which kind of mode, all can make configuration become complicated, this management for the whole network is very inconvenient.
Content of the present invention
At above-mentioned deficiency of the prior art, purpose of the present invention is exactly for a kind of implementation method of bandwidth broker can be provided, network equipment service quality (QoS) resource is carried out unified management and configuration automatically.
For realizing above-mentioned purpose of the present invention, a kind of bandwidth broker implementation method of management platform Network Based has been proposed, described bandwidth broker as one independently module be based upon on this network management platform, may further comprise the steps:
(a) user imports a resource allocation request to described bandwidth broker module by a network management interface;
(b) described bandwidth broker module is sent routing iinformation request through described network management platform to router according to the resource allocation request that is received;
(c) routing iinformation that returns according to described router of described bandwidth broker module need to determine the network equipment and the interface of configuration, and to the NE management module transmission resource information request relevant with the determined network equipment;
(d) described NE management module sends back to the bandwidth broker module with relevant resource information after according to the resource information request that is received;
(e) described bandwidth broker module is according to the resource information that is obtained, and according to original resource allocation request, determines current whether can satisfy the resource allocation request that is received with described device-dependent resource;
(f) if described bandwidth broker module is determined current can satisfy the resource allocation request that is received with described device-dependent resource, then send resource allocation request to router;
(g) router carries out resource distribution according to the resource allocation request that is received, and configuration result is turned back to described bandwidth broker module;
(h) described bandwidth broker module confirms whether the resource distribution result who is received satisfies user's resource allocation request, and to this result of user feedback.
According to said method of the present invention, described bandwidth broker module and based on adopting SNMP between the network equipment of this network management platform as communication protocol.
In said method of the present invention, step (a) comprises that further described bandwidth broker module judges the step that the resource allocation request that received is whether legal.
In said method of the present invention, step (b) comprises that further described bandwidth broker module obtains the step of necessary router interface information.Specifically, in step (b), be by the routing iinformation request of the agency of the SNMP on router reception from described bandwidth broker module.SNMP proxy module on the router is according to the routing iinformation request that is received, the routing table of query facility, and will comprise corresponding destination address next jump and routing iinformation such as outgoing interface feeds back to described bandwidth broker module.
In said method of the present invention, judge in the described bandwidth broker module of step (c) whether the routing iinformation that is received is the step of needed information.Step (d) further comprises described NE management module according to the resource information request that is received, the requester network management database, and will deliver to described bandwidth broker module by described network management platform in interface related resource information.Step (f) comprises further that described bandwidth broker module is judged and determines currently can not satisfy the resource allocation request that is received with described device-dependent resource the time, returns the information of request failure to the user.Configuration result in the step (g) comprises that configuration is correct and incorrect two kinds.
From above description to technical solution of the present invention as can be seen, the implementation method of the bandwidth broker of management system Network Based of the present invention, with bandwidth broker as one of management platform Network Based independently module realize, the management platform mutual Network Based of carrying out information by network management platform and network management interface, NE management (particular device webmaster), router realizes bandwidth broker, utilizes the communication protocol of SNMP as the bandwidth broker and the network equipment simultaneously.This method can be flexibly and easily manages the QoS resource of the network equipment, has improved automaticity, thereby has overcome deficiency of the prior art.
Brief description of drawings
Fig. 1 shows conventional bandwidth broker workflow briefly;
Fig. 2 shows the method for the COPS realization bandwidth broker of UCLA university proposition;
Fig. 3 is used for explanation management platform Network Based according to the present invention and realizes the bandwidth broker method;
Fig. 4 is the flow chart of implementation method of the bandwidth broker of management platform Network Based of the present invention.
Embodiment
The implementation method of the bandwidth broker of the management system Network Based that the present invention proposes is based on network management platform and realizes bandwidth broker, utilizes the communication protocol of SNMP (Simple network management protocol) as the bandwidth broker and the network equipment simultaneously.
As shown in Figure 3, according to the present invention, bandwidth broker is to realize as a standalone module of management platform Network Based, and carries out the mutual of information by network management platform and network management interface, NE management (particular device webmaster), router.In this modular network management system, general network management platform is adopted in the management of all-network equipment, and design and this device-dependent management system, i.e. NE management according to the characteristics of distinct device.NE management can be reduced according to the requirement of network, for example, if comprise a router in the network, can in network management system, add so and the corresponding Element management system of this router, perhaps comprise multi-layer switches, then can add again and the corresponding Element management system of these multi-layer switches.The webmaster management platform then provides unified task scheduling function, guarantees that NE management and bandwidth broker can collaborative works and can not interact.Because bandwidth broker of the present invention is embodied as a standalone module of management platform Network Based, is convenient to the bandwidth broker function expansion like this, and can impact other modules.
Now, according to Fig. 3, the implementation method of the bandwidth broker of management platform Network Based of the present invention is described.
Usually, the user is by out-band method, as phone, and request such as Email network manager Resources allocation, the keeper imports resource allocation request (RAR) by network management interface; RAR delivers bandwidth broker module (shown in flow process among Fig. 3 31) by network management platform.
The bandwidth broker module receives after the described resource allocation request, checks the legitimacy of this request, if the RAR request is illegal, can the bandwidth broker module directly return the invalid information of RAR request to user interface so.If it is legal that the bandwidth broker module is determined the RAR solicited message, and be necessary to obtain the interface message of router, it can issue routing iinformation request (shown in flow process among Fig. 3 33) to router by network management platform so.Specifically, which resource is the data flow that the RAR request may just be assigned to certain destination address need dispose, real resource need be configured in this router and can arrive on the outgoing interface of this destination address, and could arrive this destination address at actual which interface that passes through of this router, need obtain by searching routing table information.If the resource of direct which interface of specified configuration router of user does not then need to carry out route querying.
SNMP proxy module on the router receives bandwidth broker after the routing iinformation request that network management platform sends, the routing table of query facility, next that feed back corresponding destination address to bandwidth broker through network management platform jumped and desired routing iinformation (shown in the flow process among Fig. 3 34) such as outgoing interface then.Bandwidth broker is according to the routing iinformation that is obtained, and need to determine the network equipment and the interface of configuration, then by network management platform to sending resource information request (shown in the flow process among Fig. 3 36) with the device-dependent NE management module of this particular network.
After the described NE management module relevant with particular device receives the resource information request of bandwidth broker module transmission, the requester network management database, resource information that will be relevant with the resource information request that is received is delivered bandwidth broker module (shown in the flow process among Fig. 3 37) by network management platform then.The bandwidth broker module determines according to the resource allocation request of having implemented on the relevant resource information of the particular device of this acquisition and this interface (RAR) whether current device resource can satisfy new resource allocation request.If can satisfy new resource allocation request, the bandwidth broker module to router down distributing resource configuring request, wherein comprises the interface and the resource information (shown in the flow process among Fig. 3 39) thereof of needs configuration by network management platform so.
Router calls corresponding program after receiving the above-mentioned request that the bandwidth broker module sends, and disposes the QoS resource of corresponding interface.Configuration finishes after result's (shown in flow process among Fig. 3 310) that network management platform disposes to bandwidth broker module feedback resources.Whether bandwidth broker module affirmation router is presented the interface resource of returning and is correctly disposed, if confirming the router interface resource correctly disposes, so through network management interface to user feedback resource distribution result (shown in the flow process among Fig. 3 312), show that the resource allocation request that the user proposes receives.If configuration failure then returns the information of handling failure to user interface.
Fig. 4 uses block diagram form that the implementation method of the bandwidth broker of management platform Network Based of the present invention is described, this method comprises the steps
Step 1: the user is by out-band method request network manager Resources allocation, and the keeper imports the information of resource allocation request (RAR) by network management interface; RAR information is delivered the bandwidth broker system by network management platform;
Step 2: the legitimacy of bandwidth broker systems inspection RAR request, if bandwidth broker module check is illegal to RAR, then directly return the invalid information of RAR request, end process to the user through network management interface.
Step 3: if RAR is legal, and be necessary to obtain the interface message of router, the bandwidth broker module can be sent the SNMP proxy module of routing information request to router.
Step 4: after the SNMP proxy module on the described router receives request, table of query and routing, next that feed back corresponding destination address to network management platform jumped and routing iinformation such as outgoing interface then.
Step 5: the routing iinformation that bandwidth broker module receiving network managing platform is sent, judge information required when the routing iinformation received is whether, if not required information, the bandwidth broker module is directly returned the information of RAR failure to the user.
Step 6: if required information when the bandwidth broker module is judged the routing iinformation received, the bandwidth broker module then determine to need the network device interface of configuration, then by network management platform to sending the resource information request with determined device-dependent NE management module.The described NE management module of step 7 according to the resource information request that is received after, the requester network management database will feed back to the bandwidth broker module with described device-dependent interface message.
Step 8: the bandwidth broker module judges according to information that is received and existing resource allocation request (RAR) whether current device resource can be satisfied with the resource allocation request that the user proposes.If can not satisfy, the bandwidth broker module is directly returned the information of RAR failure to the user.
Step 9: if can satisfy, the bandwidth broker module is sent resource allocation request to router, wherein comprises the interface and the resource information thereof of needs configuration.
Step 10: the SNMP proxy module on the router receives after this request, can call the QoS resource that corresponding program disposes corresponding interface, and feeds back this configuration information to the bandwidth broker module.Step 11: the bandwidth broker module can judge according to the configuration information that is received whether the router interface resource distribution is correct.If correct, send the information that resource allocation request has received to the user.
Resource distribution is incorrect if step 12 is judged router interface, then sends the information of resource allocation request failure to the user.As mentioned before, bandwidth broker is a generality general name of controlling the function of decision and network equipments configuration according to the automatic admittance that the operating practice and the step of network regulation are carried out.The bandwidth broker module is in processing procedure, according to obtain from the NE management module relevant with particular device with this device-dependent resource information, and, judge whether the current resource relevant with this particular device can satisfy new resource allocation in conjunction with existing resource allocation information.If can not satisfy, the bandwidth broker module will be returned the information of resource allocation request failure through network management interface to the user.
As can be seen from the above description, the present invention has adopted the modular network management system, adopt the communication protocol of SNMP, made full use of existing mature technique, improved the reliability of the method for the invention and the stability of performance greatly as the bandwidth broker module and the network equipment.
Because snmp protocol is supported GET and SET operation, can be easy to expansion simultaneously, so above-mentioned obtain routing iinformation and configuration router, can set up privately owned CMO (configuration management object) and realize by the expansion snmp protocol from router.
The method according to this invention, this area ordinary skill is under the prerequisite that does not deviate from thought of the present invention, can get the spread bandwidth agency easily, the policing action of support standard, can also set up PIB (policy information base) at network management platform, can operate with this PIB easily based on this network management system realization bandwidth broker, convert RAR to the standard strategy and operate.
Claims (11)
1. the bandwidth broker implementation method of management platform Network Based, described bandwidth broker as one independently module be based upon on this network management platform, may further comprise the steps:
(a) user imports a resource allocation request to described bandwidth broker module by a network management interface;
(b) described bandwidth broker module is sent routing iinformation request through described network management platform to router according to the resource allocation request that is received;
(c) routing iinformation that returns according to described router of described bandwidth broker module need to determine the network equipment and the interface of configuration, and to the NE management module transmission resource information request relevant with the determined network equipment;
(d) described NE management module sends back to the bandwidth broker module with relevant resource information after according to the resource information request that is received;
(e) described bandwidth broker module is according to the resource information that is obtained, and according to original resource allocation request, determines current whether can satisfy the resource allocation request that is received with described device-dependent resource;
(f) if described bandwidth broker module is determined current can satisfy the resource allocation request that is received with described device-dependent resource, then send resource allocation request to router;
(g) router carries out resource distribution according to the resource allocation request that is received, and configuration result is turned back to described bandwidth broker module;
(h) described bandwidth broker module confirms whether the resource distribution result who is received satisfies user's resource allocation request, and to this result of user feedback.
2. according to the method for claim 1, described bandwidth broker module and based on adopting SNMP between the network equipment of this network management platform as communication protocol.
3. method according to claim 2, wherein step (a) comprises that further described bandwidth broker module judges the step that the resource allocation request that received is whether legal.
4. method according to claim 2, wherein step (b) comprises that further described bandwidth broker module obtains the step of necessary router interface information.
5. method according to claim 2, wherein step (b) further comprises by the routing iinformation request of the agency of the SNMP on router reception from described bandwidth broker module.
6. method according to claim 5, wherein the SNMP proxy module on the router is inquired about the routing table of described router according to the routing iinformation request that is received, and obtains routing iinformation, and the feedback routing iinformation is to described bandwidth broker module.
7. method according to claim 5, wherein said routing iinformation comprise next jumping and outgoing interface information of corresponding destination address.
8. method according to claim 2, wherein step (c) comprises further whether the routing iinformation that described bandwidth broker module judgement is received is the step of needed information.
9. method according to claim 2, wherein step (d) comprises that further described NE management module is according to the resource information request that is received, inquire about the network management database of described NE management module, and will deliver to described bandwidth broker module by described network management platform in interface related resource information.
10. method according to claim 2, wherein step (f) comprises further that described bandwidth broker module is judged and determines currently can not satisfy the resource allocation request that is received with described device-dependent resource the time, returns the information of request failure to the user.
11. the bandwidth broker implementation method of management platform Network Based may further comprise the steps:
Step 1: the user is by out-band method request network manager Resources allocation, and the keeper imports the information of resource allocation request (RAR) by network management interface; RAR information is delivered the bandwidth broker system by network management platform;
Step 2: the legitimacy of bandwidth broker systems inspection RAR request, if bandwidth broker module check is illegal to RAR, then directly return the invalid information of RAR request, end process to the user through network management interface;
Step 3: if RAR is legal, and be necessary to obtain the interface message of router, the bandwidth broker module can be sent the SNMP proxy module of routing information request to router;
Step 4: after the SNMP proxy module on the described router receives request, table of query and routing, next that feed back corresponding destination address to network management platform jumped and routing iinformation such as outgoing interface then;
Step 5: the routing iinformation that bandwidth broker module receiving network managing platform is sent, judge information required when the routing iinformation received is whether, if not required information, the bandwidth broker module is directly returned the information of RAR failure to the user;
Step 6: if required information when the bandwidth broker module is judged the routing iinformation received, the bandwidth broker module then determine to need the network device interface of configuration, then by network management platform to sending the resource information request with determined device-dependent NE management module;
The described NE management module of step 7 according to the resource information request that is received after, the requester network management database will feed back to the bandwidth broker module with described device-dependent interface message;
Step 8: the bandwidth broker module judges according to information that is received and existing resource allocation request (RAR) whether current device resource can be satisfied with the resource allocation request that the user proposes, if can not satisfy, the bandwidth broker module is directly returned the information of RAR failure to the user;
Step 9: if can satisfy, the bandwidth broker module is sent resource allocation request to router, wherein comprises the interface and the resource information thereof of needs configuration;
Step 10: the SNMP proxy module on the router receives after this request, can call the QoS resource that corresponding program disposes corresponding interface, and feeds back this configuration information to the bandwidth broker module;
Step 11: the bandwidth broker module can judge according to the configuration information that is received whether the router interface resource distribution is correct.If correct, send the information that resource allocation request has received to the user;
Resource distribution is incorrect if step 12 is judged router interface, then sends the information of resource allocation request failure to the user.
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| CN 02143634 CN1288877C (en) | 2002-09-25 | 2002-09-25 | Method for implementing bandwidth broker based on network management system |
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| CN 02143634 CN1288877C (en) | 2002-09-25 | 2002-09-25 | Method for implementing bandwidth broker based on network management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4012172B2 (en) * | 2004-05-28 | 2007-11-21 | 株式会社東芝 | Wireless communication apparatus and wireless communication method |
| CN100395989C (en) * | 2004-11-09 | 2008-06-18 | 华为技术有限公司 | Method for carrying net resource supervisor to automatic acquire carrying net information |
| CN101009697B (en) * | 2006-01-26 | 2011-06-15 | 华为技术有限公司 | The system and method for improving the success rate and efficiency of the resource request at the service layer |
| CN101359998B (en) * | 2007-07-30 | 2011-04-27 | 大唐移动通信设备有限公司 | Network element route establishing method and apparatus |
| CN105141457B (en) * | 2015-08-26 | 2020-10-23 | 中国电信股份有限公司 | Method, device, integrated network management and system for accessing optical transport network service |
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