CN1536849A

CN1536849A - Method for synchronously implementing web tube total web clock

Info

Publication number: CN1536849A
Application number: CNA03109113XA
Authority: CN
Inventors: 海王; 王海
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2003-04-03
Filing date: 2003-04-03
Publication date: 2004-10-13
Anticipated expiration: 2023-04-03
Also published as: CN100493047C

Abstract

The invention refers to network managing field, which solves the clock synchronization problem between the managing device and the managed device in the system. The invention is a clock synchronization realizing method in the whole network, the external network includes network managing server and the managed devices, the network managing server has a network managing proxy working station, the character lies in: a. the network managing server acquires the standard time from the parent clock source; b. the network managing working station acquires the standard time from the network managing server timely, and sets the time at local; c. the managed devices acquire time from clock source board, and report to the network managing proxy working station timely, and the network managing proxy working station examines and reports the time and carries on process. The invention solves the clock synchronization problem, eliminates the data distortion phenomenon, and upgrades the accuracy of the system synchronization time.

Description

A kind of webmaster the whole network clock synchronization realizing method

Technical field

The present invention relates to the webmaster field, relate in particular in the network management system, the time synchronization problem between managed device and the webmaster.

Technical background

Managed device and operation maintenance center (OMC) adhere to heterogeneous networks separately with network management system, and different time sources is arranged.Technical solution mainly shows as following several at present:

1, there is not lock in time at all;

2, with NM server time synchronized managed device;

3, with the synchronous the whole network of CKS time;

Be analyzed as follows:

1, there is not the synchronous distortion that then causes the webmaster operating data, it mainly is distortion to Time Correlation Data, as traffic statistics, warning information etc., data deficiency comparativity between the managed device in a plurality of asynchronism(-nization) steps (because data that webmaster will be gathered a plurality of managed devices); This situation is than ubiquity.

2, NM server exists with a high performance SUN work station or minicomputer form in actual applications, but is lacking the accuracy that is difficult to the assurance time under the external clock reference condition.

3, the clock synchronization upper level clock source of CKS, but absolute time is not accurately, in actual applications, CKS time saltus step phenomenon is arranged.

In actual applications, webmaster and managed device have adopted time system separately, and managed device generally adopts the CKS time, and webmaster is to use the time of itself server.So just caused a problem: a network has had two cover time sources.And the Data Source of network management system is main frame and OMC background system, and causing the time of operating on the webmaster or inquiring about not is the real times that produce of data, makes data " distortion ".

Summary of the invention

Purpose of the present invention solves exactly in network management system, and the problem in asynchronism(-nization) step between NM server time and the managed device proposes the unification of two time sources of a kind of solution and the problem of assurance precision.

A kind of webmaster the whole network clock synchronization realizing method, external web environment comprises NM server and managed devices, this NM server has the OAMAgent work station, it is characterized in that:

A, NM server obtain the standard time by the upper level clock source;

B, OAMAgent work station are regularly obtained the standard time from NM server, and it are arranged at this locality;

C, managed device are obtained the time from clock board (CKS ClocK Source board), regularly report to the OAMAgent work station, by calling time in the inspection of OAMAgent work station and handling.

Among the described step a, the upper level clock source of NM server is the GPS global positioning system, GPS by world concordant time (UTC Universal Time Coordinated) program will the standard time send to NM server.

Among the described step a, the upper level clock source of NM server is the Upper NM Station server, and the Upper NM Station server is issued NM server after obtaining standard time information.

Among the described step c, the content of handling is:

Call time in the inspection of OAMAgent work station, and compare,, then take internal agreement to proofread and correct the managed device internal time if surpass preset threshold with local zone time.

Described webmaster the whole network clock synchronization realizing method if surpass preset threshold, also comprises by the bottom module of managed device and proofreaies and correct the CKS time.

Described webmaster the whole network clock synchronization realizing method, the bottom module that also comprises managed device is regularly obtained the CKS time, and compare with local zone time, surpass setting threshold if detect time and the local zone time gap of CKS, then get the OAMAgent workstation time and be as the criterion.

Described managed device is a switch.

Among the described step b, the OAMAgent work station is regularly obtained the standard time from NM server, and (SNTP Simple Net Time Protocol) finishes by SNTP.

The transmission of information between described managed device and the OAMAgent work station is finished by transmission control protocol (TCP Transfer Control Protocol) agreement.

Owing to adopted the timing acquiring of temporal information between network management system time of the present invention and the managed device and the time synchronizing method of revising, solved the problem in asynchronism(-nization) step between network management system and the managed device, more complete elimination the phenomenon of data " distortions ", owing to adopt gps time in the solution of the present invention, improved the accurate and accuracy of system synchronization time greatly simultaneously as the standard time.

Description of drawings

Fig. 1 is the network structure of network management system of the present invention;

Fig. 2 is the network management system network structure that the present invention adopts;

Fig. 3 is another network management system network structure that the present invention adopts.

Embodiment

Below in conjunction with Figure of description the specific embodiment of the present invention is described.

As shown in Figure 1, the network structure that the present invention adopts, as shown in FIG., a NM server need be managed the multiclass network element device, such as switch, router etc., connect several OAMAgent work stations by local area network (LAN), be specially Back Administration Module (BAM in the present embodiment, Back AdministrationModule), store a time synchronized process among the BAM as a resident process, and being activated operation, this time synchronized process mainly is the client of a SNTP, adopts the SNTP agreement from NM server lock in time; Adopt the SNTP time synchronization protocol to carry out time synchronized between BAM and the NM server.And finish the transmission of data between the managed device by Transmission Control Protocol.NM server inserts the upper level clock source, and according to network construction form, the upper level clock source can be a gps system, also can be higher level's NM server.

If adopt GPS as the upper level clock source, as shown in Figure 2, then adopt following scheme:

GPS receiving card obtains the date temporal information by antenna receiving satellite signal and separation, world concordant time, (UTC Universal Time Coordinated) software was provided with the NM server time by the interface command acquisition standard date and the time of GPS receiving card, UTC here is a kind of common software, resolves to the time from hardware card (GPS card) timing reading of data; Here need to use time synchronized server processes, this process that is to say a simple program, and the time synchronized server processes are service processes, handles outside time synchronized request, and machine time is sent to the requesting party according to the SNTP protocol format.In the prior art, this class method is a lot, not at this detailed description.

BAM among Fig. 1 belongs to the OMC category, the agent process that is equivalent to webmaster, being responsible for data load, data acquisition and the management of managed device transmits, the time synchronized process conduct wherein resident process of BAM is activated operation, it uses the SNTP agreement regularly to obtain the time from NM server, and the BAM machine time is set.Managed device regularly reports to BAM after clock board (CKS ClocK Source board) is obtained the time, BAM calls time on checking, if surpass this machine time during certain number, then adopt internal agreement that the managed device internal time is set immediately, the bottom module of managed device (generally being operating system OS, such as switch OS) is proofreaied and correct the CKS time immediately.

As improvement project of the present invention, the bottom module OS that also designs managed device regularly obtains the CKS time, if surpass designated value in case detect time and the local zone time gap of CKS, such as setting this threshold value is 2 minutes, when time of detected CKS and local zone time above 2 minutes, therefore think that then saltus step has taken place CKS, get the BAM time immediately to be as the criterion.

Though managed device is as the criterion with the CKS time at ordinary times, when its generation saltus step or time and BAM gap are big, still be as the criterion with the BAM time.

In order to save cost, if there has been NM server to insert gps system in the network, then can be directly Upper NM Station server synchronously, network construction form is as shown in Figure 3.

It is to adjust the time of avoiding frequent that the main frame time is as the criterion with the CKS time at ordinary times, and is beneficial to this scheme better implement, because main frame generally all is as the criterion with the CKS time in the practical application.

Because the importance of NM server, BAM must keep being communicated with the network of NM server, reminds the user to recover otherwise must produce alarm.

Take a broad view of overall process, gps time--＞NM server the time--＞BAM the time--＞managed device time---＞the CKS time, gps time becomes the unified time of the whole network.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.

Claims

1, a kind of webmaster the whole network clock synchronization realizing method, external web environment comprises NM server and managed devices, this NM server has the OAMAgent work station, it is characterized in that:

A, NM server obtain the standard time by the upper level clock source;

2, webmaster the whole network clock synchronization realizing method as claimed in claim 1, it is characterized in that among the described step a, the upper level clock source of NM server is the GPS global positioning system, GPS by world concordant time (UTC Universal Time Coordinated) program will the standard time send to NM server.

3, webmaster the whole network clock synchronization realizing method as claimed in claim 1 is characterized in that among the described step a, and the upper level clock source of NM server is the Upper NM Station server, and the Upper NM Station server is issued NM server after obtaining standard time information.

4, as claim 1,2 or 3 described webmaster the whole network clock synchronization realizing method, it is characterized in that among the described step c, the content of handling is:

5, webmaster the whole network clock synchronization realizing method as claimed in claim 4 is characterized in that if surpass preset threshold, also comprises by the bottom module of managed device and proofreaies and correct the CKS time.

6, as claim 1,2 or 3 described webmaster the whole network clock synchronization realizing method, it is characterized in that the bottom module that also comprises managed device regularly obtains the CKS time, and compare with local zone time, surpass setting threshold if detect time and the local zone time gap of CKS, then get the OAMAgent workstation time and be as the criterion.

7, as claim 1,2 or 3 described webmaster the whole network clock synchronization realizing method, it is characterized in that described managed device is a switch.

8, as claim 1,2 or 3 described webmaster the whole network clock synchronization realizing method, it is characterized in that among the described step b, the OAMAgent work station is regularly obtained the standard time from NM server, and (SNTP Simple Net Time Protocol) finishes by SNTP.

9, as claim 1,2 or 3 described webmaster the whole network clock synchronization realizing method, it is characterized in that the transmission of information between described managed device and the OAMAgent work station, finish by transmission control protocol (TCPTransfer Control Protocol) agreement.