CN101094392A

CN101094392A - Method for video monitoring system to implement Topo map of network devices on web

Info

Publication number: CN101094392A
Application number: CN 200710024640
Authority: CN
Inventors: 俞海腾; 赵峰; 汪海林; 徐进; 杨富强; 汪敏; 史亮
Original assignee: Nanjing Lianchuang Network Science & Technology Co Ltd
Current assignee: Nanjing City Linkage System Integration Co., Ltd.
Priority date: 2007-06-26
Filing date: 2007-06-26
Publication date: 2007-12-26
Anticipated expiration: 2027-06-26
Also published as: CN100584001C

Abstract

The method comprises: when Toposerver finds network device, it uses Master Control to make integration and classification for Toposerver data to form XML data island that is transmitted to the display end-namely WEB system; said display end is a terminal used for making network management; the network management comprises: displaying the network topology structure; making management for the alarm, performance and traffic. The communication standard between Web and Master Control comprises: getting and saving Topo image information, alarm information and performance information. When realizing network device Topo graph, the Topo process flow comprises 3 main lines; display Topo interface; Topo dragging interface and Topo storage interface.

Description

Video monitoring system realizes the method for network equipment Topo figure on web

Technical field

The present invention relates on web, realize that TopoServer finds the method for network equipment Topo figure, relate to the visual full video equipment management method of the netted multiple domain of video monitoring system.

Background technology

Along with the continuous development of Internet, integrated computer network management is more and more important, is the basic function and the requirement of network management with graphics mode display network topology.(Qu Hong sun Hierarchic Display Method for Network Topology andits Web-based Realization, " microelectronics and computer " 04 phase in 2002)

Traditional discovering network topology main feature: (1) at local area network (LAN), is to carry out in a management domain scope that all equipment in the network is had management and configuration power, generally mainly based on SNMP, RMON and MIB.SNMP and MIB have informative characteristics, convenient when carrying out discovering network topology in conjunction with technology such as ICMP, DNS simultaneously, accurate, cycle weak point, but prerequisite is to need relevant device to support SNMP and MIB, needs to have the management access power to these equipment simultaneously; (2) in local area network (LAN), find the 3rd etale topology (router level) or second layer topology (router, gateway, switch etc. comprise the interconnection of data link layer device) according to the needs of using.And concerning Internet, number of devices is huge among the Internet on the one hand, and our purpose is to observe its topology from macroscopic perspective on the other hand, and therefore, it is also impossible to find that its second layer topology both there is no need.(ginger reputation, Hu Ming once, Fang Binxing, Zhang Hongli AnInternet router level topology automatically discovering system, " communication journal " 12 phases in 2002)).Nowadays, major function and characteristics based on the network topology of B/S comprise the following aspects: at first, network topology can reflect the actual interconnect relation of the network equipment truly, to the physical topology subregion of any complex network, show by different level and describe; Secondly, the user can click the equipment that will observe by topological diagram, understands the operation conditions of equipment intuitively by data; Moreover the user is the grade of failure definition test point, alarm and the threshold value of alarm neatly.A typical example is that when in the network fault taking place, this fault may make the relevant network equipment send a large amount of warning information, makes the network manager have no way of learning the actual location of fault.If known network topology structure, just can filter out the alarm of derivation, thus the home position of fault location.Topological structure can also make the network manager find that in advance those cause the unreasonable structure of Single Point of Faliure easily, prevent the generation (" based on the topology discovery algorithm research of SNMP " of fault, Du Yushui, " Nanjing Institute Of Posts And Telecommunications journal (natural science edition) " 02 phase in 2003); At last, some network topological diagram is described based on HTML fully now, and therefore client does not need to revise the setting and the level of security of IE browser without any need for plug-in unit and ActiveX control.

Topo figure is based on ILOG and goes up the application program of developing with java at present.

Summary of the invention

The present invention seeks to: to the network equipment situation that TopoServer finds, undertaken the data of TopoServer are integrated, sort out, form the XML data islands and be transferred to display end, be i.e. the WEB system by MasterControl.This display end is the terminal of user to network management, and it can be classified and the demonstration of layering to network topology structure, and the alarm of the network equipment, performance, flow or the like are managed.Increasingly extensive based on current web application, the object of the invention also is: will realize how realizing Topo figure on web, so promptly can break away from the ILOG constraint, it is convenient that the user is brought on the visit approach.

Does technical solution of the present invention is: video monitoring system realize the method for network equipment Topo figure on web?: during the network equipment that TopoServer finds, undertaken the data of TopoServer are integrated by MasterControl, sort out, form the XML data islands and be transferred to display end, be i.e. the WEB system; This display end is the terminal of user to network management, network topology structure is classified and the demonstration of layering, alarm, performance, flow to the network equipment manage: communication standard between Web and the MasterControl comprises: the obtaining and preserving of Topo figure information, warning information, performance information; Web and the MasterControl interface between the two comprises: Web is every 3 minutes or 5 minutes obtaining to MasterControl regularly, and Web triggers in real time by incident;

When realizing network equipment Topo figure, the Topo handling process comprises three main clues:

1) shows Topo (showing the Topo interface)

With all Topo information of concrete certain one deck of XML form transmission, by reading Corba interface byteStream stream: in the JavaBean scheduler module, request/conversion xml flow module converts the DragEvent module to; JS network element and link structure, JS character string, JS character string are directly called in the Web Topo JS class libraries;

Browser sends the request of network Topo (giving tacit consent to top layer Topo) to the JavaBean scheduler module, JavaBean passes through the Corba interface: byteStream getChildStreamData (in string uid, in string pid), obtain the Topo data flow from the MasterControl backstage, the xml stream that converts prescribed form then to sends the Web client;

JS obtains the xml stream that scheduler module is sent by the JSP technology, resolves the xml stream file, forms network element and syndeton array in the JS class libraries; The drawing function that utilizes the JS class libraries at last is with the VML technology Topo figure that draws in the Document of browser.

2) Topo drags (Topo drags interface)

Topo drags and comprises that two drag: the one, and this layer of network element drags; The 2nd, network element dragging between the sublayer.

Which kind of drags all is to send vicissitudinous network element coordinate, hierarchical information to the JavaBean scheduler module by JS by JS passback message interface when level switches or clicks preservation, scheduler module is resolved simultaneous interpretation message, structure DragEvent object (this layer drags) or DragEvent tabulate (dragging between level), and by the Corba interface: oneway void ModifyObjectsPosition (inDragEvent obj) or oneway void ModifyObjectsLayer (in dragEventList objlist) send to MasterControl with message.Dragged the coordinate of object with the version transmission:

3) Topo preserves (Topo saving interface)

The Topo information that the notice that sends instructions MasterControl preserves buffer memory arrives database:

Carry out Topo earlier and drag processing

Topo preserves to be sent by JS and preserves message to the JavaBean scheduler module, and scheduler module is resolved passback message, directly calls the Corba interface: long InformSaveTopo () notifies MasterControl to preserve the Topo data.

And be provided with the alarming processing flow process: alarm processing comprises two main lines:

1) warning information

Warning information interface: transmit by the warning information of object with version: the control centre: request/transfer alarm structure and JS class libraries: JS alarm structure

2) alarm quantity interface: alarm quantity request/transfer alarm quantity and the JS character string of transmitting concrete all object of layer with the form of structure.

The invention still further relates to accompanying drawing: at the accompanying drawing of the link of the network equipment and LA Management Room.

Because synchronous with TopoShow, coordinate will be changed ILOG coordinate and Web page coordinates during drawing, and not so Web just can not be reflected on the TopoShow after dragging and preserving.

Drawing Object drags

Mainly be that this layer of equipment drags with equipment and drags to certain sublayer.

1. because equipment moves and relates to all relevant links of this network equipment and also will and then move, during dragging in real time otherwise stop repaint view, guarantee that view do not shake.

2. the network equipment drags to certain sublayer, mainly is will judge currently which to drag to above the sublayer; And to handle current all link informations relevant after dragging to the sublayer with it.

Topo preserves: show that because Topo is layering the every demonstration one deck of Web all will be from the backstage reading of data, and during switchable layer, the user can't record to the operation of the Topo layer that is switched.

Various administration configuration: obtain some information of equipment because part configuration is the requirement program in real time by SNMP, this time is long, and how Web removes to realize carrying out for a long time JavaBean.(see figure 6)

Beneficial effect: in video monitoring management platform, by introducing topological electronic chart, the equipment of system adds flow process and becomes more succinct and friendly.At first, introduced the notion in territory in the topological electronic chart.The keeper at first adds the Device Domain of this equipment when adding equipment, and then adds the relevant device in the territory.Like this, the pass of territory and equipment ties up in the topological diagram and comes into plain view.Secondly, in topological diagram, the incidence relation of all platform devices, PU main equipment and peripheral subset (camera or The Cloud Terrace) will be shown intuitively with the form of link.In addition, at the alarm output facet, topological electronic chart will filter the ping order alarm of the performance alarm and the PU main equipment of display platform equipment, makes the network maintenance staff can recognize platform and each PU equipment running status in real time, and makes corresponding processing.At last, in topological electronic chart, the user can check the real-time video of any one camera.

This video monitoring management platform has really been accomplished the initiatively visual full video equipment management of netted multiple domain.

Description of drawings

Fig. 1 is. key data structure-Topo shows

Fig. 2. the menu handling process

Fig. 3. the warning information handling process

Fig. 4. the main handling process of scheduler module/subsystem

Fig. 5 .Topo process chart

Fig. 6. the warning information process chart

Fig. 7 .Topo display effect figure

Fig. 8. the right-click menu design sketch

Embodiment

The assurance of efficient: when drawing object is many especially, the speed during behavior of Web operand, with the assurance of performance such as background communication.

The choice of technology

Drawing instrument is selected

Web script drawing

Web draws and mainly contains bilingual: VML and SVG.

● VML is that Microsoft proposes, and has only the browser of IE more than 5.0 just to support at present, and any plug-in unit need not be installed, and is vector image, and amplifying and dwindle can distortion.

● SVG is the international standard of vector graphics, does not have the direct embedded support of browser at present, relevant plug-in unit all will be installed just can show.

The JavaBean drawing

Wrap by the drawing of Java and to draw the Topo object, and generate the Applet applet.

● the Applet application program, present IE browser will be installed the JVM virtual environment and just can move, and the rate of loading is slower, but many java class can share with TopoShow in the Applet program, can make TopoShow also break away from the ILOG constraint.

Transfer of data is selected

Interface has two kinds of selection: Corba and Socket between interface Web and the MasterControl

Transformat

Only consider the xml form at present, unified with the TopoShow transformat like this, the xml form also can well be described each object of Topo and the relation between it.

Technical scheme

Noun and abbreviation

VML:Vector Markup Language (but vector SGML), subsidiary IE5.0 issue Microsoft's in September, 1999.

DHTML:Dynamic HTML (dynamic HTML)

TopoServer: the webmaster topology is found background program

MasterControl: webmaster primary control program

Basic design concept

Web Topo does not temporarily adopt the Frame technology, and adopts certain area contents of the IFrame technology control page to carry out Data Update under the situation that does not refresh full page.

Operating system relies on: Windows series, and more than the IE5.0

Functional description: arrange at the various function demonstrations of Web Topo interface

Key data structure

Topo shows (see figure 1)

The image base class

Constructed fuction

function?Graph(){

This._id=null; // NE ID

This._title=null; // element name

This._transform=0; // whether be changed coordinate };

// obtain of Graph class to quote

var_p＝Graph.prototype；

Method

(1.init) preliminary examination object properties

(2.draw) VML language drawing object

3.remove () deletes object from Web view documents document

4.setTransform whether the object coordinate is set is changed

The toString method of (5.toString) heavily loaded Object

The network element images category

Constructed fuction

funct?ion?NetGraph(){

Graph.call (this); // succession image base class

This._x=0; //X-axis coordinate (left)

This._y=0; //Y-axis coordinate (top)

This._ip=null; //IP address

This._w=0; // image wide

This._h=0; The height of // image

This._icon=null; // image icon

This._type=-1; // unit type 0 is the network segment };

// obtain of NetGraph class to quote

var_p＝NetGraph.prototype＝new?Graph；

Method

Except must realizing the abstract method of base class: init, draw, remove, also increased

● setXY resets the object coordinate

● the move object moves

● the relevant alarm quantity of drawWarn drawing object

● the relevant alarm quantity of removeWarn deletion object

The link images category

Constructed fuction

function?LinkGraph(){

Graph.call (this); // succession image base class

This._form=null; // link starting point object ID

This._to=null; // link terminal point object ID };

// obtain of LinkGraph class to quote

var_p＝LinkGraph.prototype＝new?Graph；

Method

●move

Object moves

Menu bar

Primary structure

The structure of ● // single menu

function?menu(mnuName，mnuText，mnuAlt，mnuIcon，mnuTarget，mnuKey，mnuType，mnuCmd){

This.name=mnuName; // menu sign

This.text=mnuText; // pad name

This.alt=mnuAlt; // menu is described

This.icon=mnuIcon; // menu icon

This.target=mnuTarget; // menu closure

This.key=mnuKey; // menu shortcuts

This.type=mnuType; Whether // Menu Type has submenu

This.cmd=mnuCmd; // menucommand }

● // menu group structure

function?CMenu(mnuName){

this.name ＝mnuName；

This.menu=new Array (); // menu is array as a result }

● // movable menu

function?ActiveMenu(mnuID，mnuType){

This.id=mnuID; // menu sign ID

This.type=mnuType; // whether be main menu

Main method

● the drawMainMenu main menu of painting

● the drawSubMenu submenu of painting

● showMenu shows main menu

● showRMenu shows right strong menu

● showSubMenu shows submenu

Main handling process (see figure 2)

Realize supporting

Support VML technology and dynamic HTML technology

Important algorithm

Utilize the prototype attribute of JS, realize the succession of JS class.

Interface module/subsystem design

Communication standard between functional description: Web and the MasterControl comprises: the obtaining and preserving of Topo figure information, warning information, performance information.

This interface comprises:

● Web is every 3 minutes or 5 minutes obtaining to MasterControl regularly

● Web triggers in real time by incident

Show the Topo interface

With all Topo information of concrete certain one deck of XML form transmission, by reading Corba interface byteStream stream:

typedef?sequence<octet>byteStream；

// obtain all topo data with one deck with pid

byteStream?getSameStreamData(in?string?uid，in?string?pid)；

// to obtain father ID be all topo data of pid

byteStream?getChildStreamData(in?string?uid，in?string?pid)；

Flow structure:

<？xml?version＝″1.0″encoding＝″gb2312″？>

<NetView?id＝″″pid＝″″layer＝″″>

<Device?id＝″n1″title＝″ddl-MA5100″ip＝″10.1.1.1″x＝″50″y＝″50″type＝″3″icon＝″sun.png″/>

</Devices>

<Links>

<Link?id＝″11″title＝″″from＝″n21″to＝″n1″/>

</Links>

</NetView>

</WebTopo>

Topo drags interface

Dragged the coordinate of object with the version transmission:

// object is worked as anterior layer and is dragged

oneway?void?ModifyObjectsPosition(in?DragEvent?obj)

// object drags to certain sublayer

oneway?void?ModifyObjectsLayer(in?dragEventList?objlist)

// positional structure

struct?Position{

String id; // object ID

Long x; // object abscissa

Long y; // object ordinate };

// network element list object

typedef?sequence<Position>PositionList：

// drag structure

struct?DragEvent{

String vid // as front view ID

String pid // current parent ID

PositionList list // object's position tabulation };

typedef?sequence<DragEvent>dragEventList：

The Topo saving interface

long?InformSaveTopo()；

The warning information data structure

The warning information interface

Transmit by the warning information of object with version:

// obtain for the first time alarm (up-to-date 200)

// obtain the warning information Pid of all subobjects of appointed object: the object idAlarmEventList getAllAlarm of the warning information that obtain (in string uid);

// obtain the warning information ID of sequence number greater than assigned serial number: the arrival sequence number */AlarmEventList getNewAlarm of warning information (instring uid, in long id);

// alarm structure

struct?AlarmEvent

{

// sequence of events number

long m_Number；

// create the type of incident network element, type is a short.Value regulation is as follows:

// 1:HostMan system; The 2:Pmee module; The 3:syslog probe; 4:snmp trap probe; 5: regulation engine

//6：AutoTopo?20：AI_probe

short m_CreatorType；

// create the title of incident network element, type is a character string

string m_CreatorName；

// alarm id

string m_AlarmId；

// to create the time of incident, type is a long, expression is from the quantity of the second that standard Event begins

long m_CreateTime；

The numbering of // incident, type are character string.Because to dissimilar incidents, its numbering may have different forms.

// to syslog, its Case Number is an integer;

// to snmp trap, it is numbered an OID value in the MIB tree.

//

string m_EventNo；

The device type of // event source network element, type are short.Value regulation is as follows:

// 0: the unknown; 1: router; 2: switch; 3: main frame; 4: application program; 5: database; 6: fire compartment wall

short m_DeviceType；

Equipment vendors' name of // event source network element, type are character string.

string m_DeviceCompany；

The Id of // event source network element.

string m_SourceName；

The IP address of // event source network element, type is a character string.

string m_SourceIP；

The serious grade of // incident, type are short.Value regulation is as follows:

// 1: normal daily record; 2: common mistake does not influence the operation of equipment; 3: mistake, current device operation exception; 4: gross error, equipment can not be worked; 5: the unknown.

// 0: the affirmation incident, the some incidents that taken place are confirmed.(increase: December 9, in order to carry out alarm clearing)

short m_Severity；

The active state that // incident is current, type are short.Value regulation is as follows:

// 1: reset condition, do not handle; 2: show state has arrived user interface;

// 3: the affirmation state, the user has confirmed this incident; 4: treatment state, this incident have obtained handling and have removed.5: this alarm is eliminated

short m_ActiveStatus；

The title that // incident shows, type is a character string

string m_DisplayTitle；

// incident content displayed can Bao Han $1, $2 isotype string

string m_DisplayString；

// device numbering, escape

string m_DeviceNo； }；

typedef?sequence<AlarmEvent>alarmEventList；

The alarm quantity interface

Transmit the alarm quantity of concrete all object of layer with the form of structure

AlarmNumList?getAllAlarmNum(in?string[] id)；

// alarm quantity structure

struct?AlarmNum {

String id; // object ID

Long level; // present highest alarm level

Long number; // present highest alarm quantity };

typedef?sequence<AlarmNum>alarmNumList；

JS returns message structure

Mainly be that the Corba interface conversion is become string format, so that communicate by letter with JavaBean during JS passback data.

Show the Topo interface

●Device；Device；…；Device#Link；Linke；…；Link

● Device or Link: attribute, attribute ..., attribute

Topo drags interface

DragEvent：

●vid；pid；PositionList

PositionList：

●Position$Position$...$Position

Position：

●id，x，y

Main handling process (see figure 3)

Scheduler module/subsystem design

Functional description

Be the tie between MasterControl and the Web interface display, be responsible for the conversion of two aspect data and transmit communication information.

Key data structure

Main handling process (see figure 4)

Realize supporting Omni Corba

Program running phase handling process

Topo handling process (see figure 5)

The Topo handling process mainly comprises three main clues at present:

● show Topo

● Topo drags

Which kind of drags all is to send vicissitudinous network element coordinate, hierarchical information to the JavaBean scheduler module by JS by JS passback message interface when level switches or clicks preservation, scheduler module is resolved passback message, structure DragEvent object (this layer drags) or DragEvent tabulate (dragging between level), and by the Corba interface: oneway void ModifyObjectsPosition (inDragEvent obj) or oneway void ModifyObjectsLayer (in dragEventList objlist) send to MasterControl with message.

● Topo preserves

Carry out Topo earlier and drag processing

The alarming processing flow process

Alarm processing mainly comprises two main lines at present:

One. data structure

1. network element abstract class

As // obtain of Graph class to quote

var_p＝Graph.prototype；

// preliminary examination parameter

_p.init＝function(){

_ throw (0x0001, " abstract class can not the concrete data of instantiation ");

// picture shape

_p.draw＝function(){

// deletion figure

_p.remove＝function(){

// the change state is set

_p.setTransform＝function(transform){

this._transform＝transform；

The toString method of // heavily loaded Object

_p.toString＝function(){

Return " oGraph "; Deng

2. device object class

function?NetGraph(){

Graph.call(this)；

This._x=0; //X-axis coordinate (left)

This._y=0; //Y-axis coordinate (top)

This._ip=null; //IP address

This._w=0; // image wide

This._h=0; The height of // image

This._icon=null; // image icon

This._type=" 1 "; // unit type 0 is the network segment

The init method of // realization Graph class

The draw method of // realization Graph class

_p.draw＝function(){

arr＝getIconSize(this._icon)；

w ＝arr[0]；

h ＝arr[1]；

// registration the network segment is double-clicked incident

eventStr＝″″；

The remove method of // realization Graph class

_p.remove＝function(){

// drawing object outer rim

// deletion object outer rim

// reset coordinate

_p.setXY＝function(x，y){

// object moves

The toString method of // heavily loaded Object etc.

3. link objects class

function?LinkGraph(){

Graph.call(this)；

This._form=null; // link starting point object ID

This._to=null; // link terminal point object ID

The draw method of // realization Graph class

4. menu structure data

Two. execution mode

1. page call on load initialize () method

2. the action triggers incident of mouse on the topo network element called the respective handling method

2.1 network element moves

Dev_MouseDown () method has defined the action of mouse after pressing on the network element device, draws frame and initialization and drags list object.

function?Dev_MouseDown(){

IsDev＝true；

// obtain current event to trigger object

curDragObj＝event.srcElement；

if(event.srcElement.tagName?！＝″image″) return；

// pass the current network object indexing to give menu system, arrObjectID be the oIndex=findDevObjByID of coolmenu.js definition (curDragObj, id);

If // be in the picture link mode to withdraw from immediately

The current selected object frame of // deletion

clearBorder()；

// add frame

arrDev[oIndex].drawBorder()；

// search the network element relevant link to tabulate

findLinkObjByID(curDragObj.id)；

// initialization drags list object etc.

3. network element drag events trigger

This method is judged the concrete actuation of keys of mouse, if right button is pressed, then shows right-click menu; Otherwise judge whether at rolling mouse, trigger the mouse moving event

4. network element is chosen the mouse moving event of the TOPO layer of triggering

5. network element UP incident

At first judge present mode,, then draw new link if draw link mode; Otherwise redraw the network element image.

6. create right strong menu data

7. create submenu data (the right-click menu effect is seen figure)

function?createRSMenu(submenu){

Show right-click menu (the right-click menu effect is seen Fig. 8)

function?showRightMenu(){。

Claims

When 1, video monitoring system realizes the network equipment of the method for network equipment Topo figure: TopoServer discovery on web, undertaken the data of TopoServer are integrated by MasterControl, sort out, form the XML data islands and be transferred to display end, be i.e. the WEB system; This display end is the terminal of user to network management, network topology structure is classified and the demonstration of layering, alarm, performance, flow to the network equipment manage: communication standard between Web and the MasterControl comprises: the obtaining and preserving of Topo figure information, warning information, performance information; Web and the MasterControl interface between the two comprises: Web is every 3 minutes or 5 minutes obtaining to MasterControl regularly, and Web triggers in real time by incident;

When it is characterized in that realizing network equipment Topo figure, the Topo handling process comprises three main clues:

1) show the Topo interface:

With all Topo information of concrete certain one deck of XML form transmission, by reading Corba interface byteStream stream: in the JavaBean scheduler module, request/conversion xml flow module converts the DragEvent module to; JS network element and link structure, JS character string, JS character string are directly called in the Web TopoJS class libraries;

Browser sends the request of network Topo (giving tacit consent to top layer Topo) to the JavaBean scheduler module, JavaBean passes through the Corba interface: byteStream getChildStreamData (in string uid, instring pid), obtain the Topo data flow from the MasterControl backstage, the xml stream that converts prescribed form then to sends the Web client;

JS obtains the xml stream that scheduler module is sent by the JSP technology, resolves the xml stream file, forms network element and syndeton array in the JS class libraries; The drawing function that utilizes the JS class libraries at last is with the VML technology Topo figure that draws in the Document of browser;

2) Topo drags interface

Topo drags and comprises that two drag: the one, and this layer of network element drags; The 2nd, network element dragging between the sublayer; Which kind of drags all is to send vicissitudinous network element coordinate, hierarchical information to the JavaBean scheduler module by JS by JS passback message interface when level switches or clicks preservation, scheduler module is resolved passback message, this layer drags and drags the DragEvent tabulation between structure DragEvent object () or level, by the Corba interface message is sent to MasterControl, dragged the coordinate of object with the version transmission;

3) Topo saving interface: the notice that sends instructions MasterControl preserves the Topo information of buffer memory to database;

Carry out earlier Topo and drag processing, Topo preserves to be sent by JS and preserves message to the JavaBean scheduler module, and scheduler module is resolved passback message, directly calls the Corba interface: long InformSaveTopo notifies MasterControl to preserve the Topo data.
2, video monitoring system according to claim 1 realizes the method for network equipment Topo figure on web: it is characterized in that being provided with the alarming processing flow process: alarm processing comprises two main lines:

1) warning information

Warning information interface: transmit by the warning information of object with version: the control centre: request/transfer alarm structure and JS class libraries: JS alarm structure

2) alarm quantity interface: alarm quantity request/transfer alarm quantity and the JS character string of transmitting concrete all object of layer with the form of structure.
3, video monitoring system according to claim 1 realizes the method for network equipment Topo figure on web: it is characterized in that being provided with JS passback message structure: the Corba interface conversion is become string format, so that communicate by letter with JavaBean during JS passback data.
4, video monitoring system according to claim 1 is in the method that realizes network equipment Topo figure on the web: it is characterized in that being provided with scheduler module/subsystem and be the tie between MasterControl and the Web interface display, be responsible for the conversion and the transmission communication information of two aspect data.