CN100521692C - Method for combining network based on floating interface of CORBA - Google Patents

Abstract

The present invention relates to a network organizing method of an EML-NML floating interface based on CORBA. M private networks of a DCN access layer form a private network cluster; each private netwA network forming method of floating interface based on CORBA includes forming m numbers of private network in DCN wire in layer to be a private network cluster as each one corresponding to an interfaork cluster corresponds to an interface server; EML-NML floating interfaces of all EMS systems in the cluster operate on the interface server. The private network IP of the interface server is staticace server, operating all EML-NML floating interfaces of EMS system in cluster on interface server, converting private network IP on interface server to be DCN public backbone network IP statically by lly converted to a public network IP of a DCN backbone layer by a network address server; only CORBA basic software is installed on the interface server, each of the EML-NML floating interfaces communnetwork address server, installing CORBA basic software on interface server only, carrying out communication by EML-NML floating interface through public network IP, NMS system in backbone layer, privicates with an NMS system in the backbone layer by the public network IP which is statically assigned by the interface server and communicates with all EMS systems in the private network cluster by thate network IP and NMS system in private network cluster. e private network IP of the interface server and different ports. The present invention has the advantages that the public network IP address is saved; the cost of basic software is saved; the maintenance of interface management is simplified; the complexity for network organizing is reduced.

Description

A kind of network-building method of the floating interface based on CORBA

Technical field

The present invention relates to a kind of NE management layer based on CORBA-NML EML-NML floating interface separates operation with Element management system EMS networking application, the network-building method of particularly a kind of NE management layer-NML EML-NML floating interface based on Common Object Request Broker Architecture CORBA.

Background technology

In order to improve telecommunication apparatus operation maintenance efficient, telecommunication apparatus operator begins to construct NML NML united net management-network management system NMS, and the Element management system EMS that each equipment supplier is provided is put under the uniform management in the platform.Communications facility between NMS and each EMS is telecommunication synthesis data communication network (DCN).The DCN net adopts the multi-zone supervision pattern, is divided into three layers: Access Layer, convergence-level and backbone layer, EMS are positioned at the Access Layer of DCN net, and NMS then is positioned at convergence-level or backbone layer.Access Layer is made of each regional private network, and the IP address that each EMS had is only effective in each private network of Access Layer.Because the in the industry CORBA standards that adopt of EML-NML floating interface application layer communication protocol more, the exploitation of existing EML-NML floating interface is and the EMS close coupling, be that EMS must run on same machine or same process with interface, therefore must can direct interconnection when NMS will be by interface management EMS with EMS, it is following unfavorable to cause:

1) every EMS need distribute a backbone layer IP address, causes the consumption of IP address big

2) every EMS need install the CORBA basic software, if for stability and security consideration, adopts commercial CORBA software then to need to be every EMS payment basic software expense

3) because being distributed in the whole network various places together, interface and EMS cause maintenance inconvenience.

Because IPV4 and IPV6 need coexist a very long time in DCN, wherein IPV4 is the internet ip agreement, and IPv6 is the Internet protocol of next version, IPv4 adopts 32 bit address length, address resource is about to exhaust, and IPv6 adopts 128 bit address length, and address resource is relatively more sufficient.Because the webmaster number of nodes of local network is many, therefore existing EML-NML floating interface and consumption, basic software cost and the interface maintenance cost of the tightly coupled software architecture of EMS in the IP address all can be bigger in addition.

" carrier network IP address assignment principle " and domestic actual engineering situation according to China Academy of Telecommunications Research of MII Xu Gui treasured in " Communications World net ", operator realizes saving IPV4 address, heterogeneous networks IP address transition and IP and divides the territory management the main dual mode that adopts: DHCP (DHCP, Dynamic Host Configuration Protocol, RFC1541) and network address translation (NAT, Network Address Translation, RFC 1631);

(1) DHCP mode

DHCP utilizes a plurality of equipment not use the public network address principle to realize simultaneously.When an equipment was connected to network, this equipment can be to Dynamic Host Configuration Protocol server application IP address, when this equipment and network disconnect when being connected, will discharge public network IP address, and Dynamic Host Configuration Protocol server then can be with this address assignment to other equipment.The DHCP technology has realized that the IP address is shared, simplified the network configuration expense, but DHCP has also increased network delay.

DHCP is a kind of dynamic assignment IP address technology, exists defective and cause it unavailable under the applied environment of telecommunication management network.Reason is that the EMS system exists as server in the private network in the most of the time, NMS connection for convenience need be the fixing backbone layer IP address of each EMS system assignment, NMS need keep forever being connected so that NMS intercepts the change message of the relevant alarm of EMS, configuration with EMS simultaneously, and therefore not satisfying a plurality of equipment does not use the public network address principle simultaneously.Dynamic IP distribution technique incompatibility telecommunication administration NMS off the net and EMS intercommunication in sum, above defective all exists for all dynamic IP addressing distribution techniques.

(2) NAT mode

The NAT technology comprises three kinds of modes: static NAT, dynamic address NAT, Port-Level NAT.The static NAT configuration is the simplest, and network delay is minimum.This technology is that in the private network each needs certain the legal address in external network of the permanent distribution of main frame of public network address.Static NAT is suitable for providing in the private network application of server capability, promptly can satisfy the EML-NML floating interface as server, but because the interface and the EMS of exploitation are close-coupled relations at present, and each EMS need provide an interface, therefore need lose the effect of saving address for each EMS distributes a DCN net address.

Dynamic address NAT has externally defined a series of legal address in the network, and the interim outside ip address of IP address assignment for each inside is mainly used in dialing, also can adopt pooled NAT for frequent long-range connection.After the long-distance user connected, dynamic address NAT will distribute to his IP address, and when the user disconnected, this IP address will be released and use after waiting until.NAPT is mapped to home address on the different port of an IP address of external network, NAPT is different with dynamic address NAT, it connects inside on the independent IP address that is mapped in the external network, adds one simultaneously by the selected transmission control agreement tcp port number of NAT device on this address.The both is that the dynamic IP distribution technique is not suitable in the private network main frame as the applied environment of server.

In sum, existing method of saving the IP address all is not suitable for EML-NML connection networking.

The IP address big key of consumption why occurs and be that the EML-NML floating interface must move with EMS on uniform machinery, be necessary for each EMS when causing NMS and distribute a backbone network address, and every EMS must buy the required basic software-CORBA of interface operation by interface management EMS system.Existing interface must and the key of EMS system binding operation be that interface need call the power function of a large amount of EMS system, expand on the normally direct EMS source code of the exploitation of existing interface, perhaps call the dynamic base of EMS system, thus interface must and EMS on same machine even same in-process operation.

Summary of the invention

The present invention is directed to the deficiency and the defective of above-mentioned existing webmaster, a kind of network-building method of the EML-NML floating interface based on CORBA is provided, the present invention makes interface system have the network portability, mainly solve following three big problems: (1) every EMS need distribute a backbone layer IP address, causes the consumption of IP address big; (2) every EMS need install the CORBA basic software, if for stability and security consideration, adopts commercial CORBA software then to need to be every EMS payment basic software expense; 3) because being distributed in the whole network various places together, interface and EMS cause maintenance inconvenience.

Technical scheme of the present invention:

NE management layer-NML EML-NML floating interface based on Common Object Request Broker Architecture CORBA is realized unsteady method, the EML-NML floating interface adopts CORBA as the bottom communication model, adopt the TMF.513 of Tele Management Forum TMF, TMF.608 and TMF.814 standard are as information model, and this interface mainly comprises Element management system EMS encapsulated layer, application protocol conversion layer and corba interface are realized layer, carry out according to the following steps: the EMS encapsulated layer is acted on behalf of two parts by interface side encapsulated layer and EMS side remote procedure call RPC and is formed, the EMS encapsulated layer provides EMS with dynamic base and former code close coupled system functional interface is packaged into network-based remote and calls the RPC interface, when interface need call the EMS systemic-function, by the EMS encapsulated layer function type and parameter are packaged into RPC interface type and parameter, and send to EMS side RPC agency, by EMS side RPC scheduling agent EMS function and return results; Protocol conversion layer will change the information model of TMF608 normalized definition from the information that the EMS system obtains into; Corba interface is realized layer definition IDL interface document, and interface document is realized corba interface function and objective for implementation Servant with reference to the TMF814 standard.

RPC calls the form that form adopts the tcp/ip communication frame, has the parameter and the return results of EMS function type, function scheduling in the transmission.The CORBA objective for implementation adopts trade name, unique ID number and the object oriented of EMS in the interface server category to name jointly in the NameSpace issue.

A kind of network-building method of the EML-NML floating interface based on CORBA, mainly comprise TCP/IP and CORBA network communication protocol, floating interface, a network address translation services device, interior EMS system, the interior NMS system of public network and the public network IP address of private network that interface server, quilt are managed, wherein interface server and network address translation services device also can be same station server, and network-building method carries out in the following manner: (1) a plurality of private network IP address is converted to a public network IP statically and a plurality of port communicates; (2) m private network in telecommunication synthesis data communication network (DCN) Access Layer is divided into a private network cluster (m 〉=1); Each private network comprises several EMS systems; For each EML private network cluster distributes an interface server and a network address translation services device; Each EMS private network is connected with interface server respectively in the private network cluster, interface server links to each other with the network address translation services device, be responsible for the private net address of interface server is converted into a public network address by this network address translation services device, all floating interface systems use this public network IP address and NMS system docking on the interface server; (3) corresponding EML-NML floating interface of each EMS system, whole floating interfaces that the EMS system provides in the private network cluster concentrate on the interface server and move, the CORBA basic software is only installed on interface server, as the platform that releases news and realize asking to management system; (4) the EML-NML floating interface that moves on the same interface server uses the private network IP address of interface server to obtain necessary information with a plurality of different EMS systems of port from the private network cluster; A public network IP address that uses the network address translation services device to provide simultaneously docks with NMS; (5) NMS obtains inlet CORBA object-emsSessionFactory that the EML-NML floating interface is issued by CORBA name service, with reference to TMF814, and carries out authentication and follow-up interoperability; (6) NMS in the DCN network operates all EMS systems in the private network cluster by the public network IP address at interface server place, thereby solves the appeal problem.

Network address translation services device and interface server can be same main frames in the networking plan, when for example utilizing multi-homed host (Multhomed Host) technology to realize, multi-homed host promptly is that the address transition server also is an interface server simultaneously, whole floating interfaces of operation private network cluster correspondence.Networking is achieved as follows: two network interface cards of multi-homed host configuration and private network, two IP addresses of public network; The host name binding of public network IP and multi-homed host; The CORBA basic software is installed on the multi-homed host, and on its public network IP address, is disposed a CORBA territory, as the platform that releases news and realize asking to NMS; This programme cost is lower, is adapted to but not only is adapted to the more situation of EMS system in the private network cluster.

Can utilize the NAT server to realize the static network address conversion in addition, networking is achieved as follows: an interface server is set in the private network cluster, total interface is operation on rising, and corresponding C ORBA basic software is installed on interface server, by the NAT server interface server of all private network clusters is realized the static address conversion, a fixedly public network address is provided for it.This programme networking is more flexible.

Superiority of the present invention is aspect three: save public network IP address; Save the basic software cost; The Convenient interface centralized management; Simplify engineering maintenance; Reduce the complexity of networking.

Description of drawings

Fig. 1 is the system group network figure that uses this programme floating interface technology.

Fig. 2 is an EML-NML floating interface system assumption diagram.

Fig. 3 a is the networking diagram that does not have floating interface.

Fig. 3 b is the networking variation diagram behind the increase floating interface.

Fig. 4 utilizes floating interface+multi-homed host networking diagram.

Fig. 5 utilizes floating interface+interface server+NAT server networking diagram.

Fig. 6 is the actual floating interface+multi-homed host try net sample figure that utilizes.

Embodiment

The EML-NML floating interface adopts CORBA as the bottom communication model, and TMF.513, TMF.608, TMF.814 standard are as information model among the employing TMF.The key of its architecture is to exist an EMS encapsulated layer and EMS side that the RPC agency is installed, this encapsulated layer and RPC agency provide EMS with close coupling forms such as dynamic base functional interface is converted to based on the communication frame format of TCP/IP and calls form with network remote and finish, thereby has guaranteed that the EML-NML floating interface can run on the network of different segment with the EMS system respectively.

The present invention is based on the telecommunication management network EML-NML layer networking Managed Solution of floating interface technology, mainly comprises corresponding a series of network communication protocol (TCP/IP, CORBA), a network address translation services device, interior EMS system, the interior NMS system of public network and the public network IP address of private network that interface server, quilt are managed.

Its basic principle is a plurality of private network IP address to be converted to a public network IP statically and a plurality of port communicates.It is characterized in that m private network in the DCN Access Layer is divided into a private network cluster (m 〉=1).For each EML private network cluster distributes an interface server and a network address translation services device; Each EMS private network is connected with interface server respectively in the private network cluster, and interface server links to each other with the network address translation services device, is responsible for the private net address of interface server is converted into a public network address by this network address translation services device.All floating interface systems use this public network IP address and NMS system docking on the interface server.The corresponding EML-NML floating interface of each EMS system, architecture supporting interface by interface can float, interface concentration operates on the interface server, and each private network cluster correspondence runs on one group of EML-NML floating interface system on same the interface server.The total interface system that moves on same interface server uses a public network IP address and NMS butt joint, and interface utilizes a private network IP address to obtain necessary information with a plurality of different corresponding EMS of port from the private network cluster.For the NMS in the DCN network, can only operate all EMS systems in the cluster, thereby reach the function of saving public network IP address by a public network IP address at interface server place.Owing to only need the CORBA basic software be installed on interface server, realized saving the purpose of software cost, total interface operates on the same station server, rather than is distributed in various places, has also simplified maintenance work.Networking mode as shown in Figure 1

Realization of the present invention depends on the architecture of its software, and as shown in Figure 2, the system of interface software is divided into three layers: the EMS encapsulated layer, application protocol conversion layer and corba interface are realized layer.

(1) EMS encapsulated layer

The network technology of EMS encapsulated layer by SOCKET (socket) converts the close coupling relation of interface and EMS to 1: 1 network annexation, guaranteed the network portable of interface.This is the basis of realizing the floating interface technology, and just interface separates the basis of operation with EMS.

Functional module, reception reporting message that interface adopts TCP/IP mode far call EMS to provide; Adopt remote data base type collection EMS system information.The frame structure that interface is communicated by letter with EMS is as follows:

A) frame head sign: the initial location of descriptor frame;

B) parameter positioning pointer: describe the original position of " parameter length ", for follow-up expansion frame type information is reserved extendible position;

C) number of frames: the coding of descriptor frame time sequencing, coding only carries out in the entity that produces frame, and for example the frame that is produced by EMS is then encoded and is only described the time order and function order that EMS sends frame;

D) user ID: the client id number of request is initiated in expression, is that client obtains to the EMS application;

E) result code: the expression result, O is correct, otherwise fills in error code;

F) the detailed classification of frame category and frame: the function type of expression frame, the function of for example dispatching EMS, or reporting types;

G) parameter length and parameter: represented the content and the length of frame parameter, content of parameter is a variable length, and form is determined by each frame type;

Owing to adopt TCP therefore to no longer include the frame head check byte as the network layer communication agreement.

The removing network element performance counter function of calling EMS with the EML-NML floating interface is an example, the EML-NML floating interface sends to EMS by TCP/IP: frame category is ' D0 ', the detailed classification of frame is ' M6 ', parameter is: the command frame of network element position information, EMS side RPC agency receives and resolves to the EMS functional interface behind the command frame and call, and result code is filled in return in the frame.The frame category that returns frame is ' D0 ', the detailed classification of frame is ' M6 ', same command frame

Protocol conversion layer

Protocol conversion layer will change the information model of TMF608 normalized definition from the information that the EMS system obtains into, and the semanteme that reduces EMS and united net management is poor.This layer realization is different and different according to the information that the EMS system provides, and has nothing to do with unsteady technology and does not describe in detail at this.

Corba interface is realized layer

CORBA realizes layer definition IDL interface document, and interface document is realized corba interface function and objective for implementation (Servant) with reference to the TMF814 standard.

The basic fundamental of this programme is as follows:

1) realization of unsteady technology

Unsteady technology is to realize by the EMS encapsulated layer.

For the function that EMS provides in the dynamic base mode, the RPC agency is installed in the EMS side.Finish funcall by the agency, interface system transmits and agent communication propagation function type, functional parameter and reception result by communication response protocol TCP/IP; Then directly dispatch with the function that the RPC mode provides for EMS; Wherein the RPC mode contains the function that CORBA provides.

Utilizing the data-base remote calling interface to collect for information gathering, is each EMS system specified database server and user profile in interface preliminary examination configuration file.

The message that reports for EMS directly receives by SOCKET or other RPC channel; For reporting of transmitting by SOCKET, in interface preliminary examination configuration file, specify different listening ports for each EMS.

2) planning of NameSpace

With the CORBA basic software is ORBIX6.1, application layer protocol be the TMF standard as an example, because a plurality of EMS interfaces all operate on the interface server, this means that a plurality of interfaces based on CORBA all in a CORBA territory, therefore must guarantee that the object that interface is issued can not weigh in NameSpace on naming tree.As the application layer standard, so interface object-emsSessionFactory of factory of issue in NameSpace only provides quoting of other corba interface by it to client to interface with TMF.

This programme disposes an independently CORBA territory on each interface server, be relative unique ID number sign in this interface server category of each EMS system assignment on interface server, distinguish with this when interface system is issued factory's object in NameSpace.For example factory's object naming can be: trade name/EMS_i/emsSessionFactory, i are the relative ID of EMS system, and trade name is the context node of NameSpace, to distinguish the northbound interface of different vendor.Also do same processing for other CORBA object, comprise event channel.

3) utilize floating interface technology+multi-homed host (MultiHome Host) to realize network-building method

As shown in Figure 4, can choose in the private network EMS or an independent higher server of efficient as Multihomed Host according to the load weight, the two network interface cards of configuration and two IP addresses.An IP address belongs to private network, and another belongs to public network, the host name binding of public network IP and multi-homed host.

The CORBA basic software only is installed on multi-homed host, and on its public network IP address, is disposed a CORBA territory, as the platform that releases news and realize asking to NMS; This moment, multi-homed host was also born the task of interface server simultaneously except that having born the static network address translation function, had moved whole floating interfaces and CORBA service with a private network cluster correspondence on it.

NMS obtains inlet CORBA object-emsSessionFactory by the name service, and carries out authentication and follow-up interoperability;

4) utilize floating interface technology+NAT server+interface server to realize networking plan

As shown in Figure 5, an interface server is set in the private network cluster, this interface server has only a private network IP address, all floating interface system of EMS system correspondence and CORBA services in the operation private network cluster.Interface server links to each other with the NAT server, be responsible for the public network IP address that converts to by NAT with the private network IP address static state of interface server, the TCP/IP data of transparent transmission backbone network and Access Layer make that the CORBA bus in the backbone network can be passed through IIOP (Internet Inter_ORB Protocol) intercommunication with the CORBA bus in the private network.

NMS obtains inlet CORBA object-emsSessionFactory by the name service, and carries out authentication and follow-up interoperability;

5) interface management

Interface management no longer is to be dispersed in each Access Layer, but concentrates on the several interface servers of backbone layer of DCN, is convenient to unified management and engineering maintenance.

Superiority of the present invention is aspect three: save public network IP address; Save the basic software cost; The Convenient interface centralized management; Simplify engineering maintenance; Reduce the complexity of networking.

The assessment of floating interface technical benefits:

Shown in Fig. 3 a, Fig. 3 b, suppose total m EMS system in the DCN network, i EML layer private network, a private network cluster only comprises an EMS private network, n NMS system, and satisfy m〉n, and i〉n.

Network connection layout when Fig. 3 a represents not add floating interface, G1={V1, E1}, V1={EMS node, NMS node }, E1 is undirected connection, is contained in { { EMS node } X{NMS node } };

Fig. 3 b represents to increase the network connection layout behind the floating interface, G2={V2, E2}, the V={EMS node, NMS node, interface server node }, E2 is undirected connection, be contained in { { EMS node } X{ interface server node } } ∪ { { interface server node } X{NMS node } }, node is represented processing node (Processing node), limit (edges) represents internodal communication.

(1) saves public network IP address

The backbone network IP address of the DCN that assembly united net management platform is required was m originally, was i behind application this programme, and i is the subnet number, m〉〉 i.Only need get final product for each interface server distributes a backbone network address.If promptly there are 10 EMS m/i 〉=10 in each regional EML private network, so just can save 10 times IP address resource.

Save the basic software cost

The tricks that originally need buy commercial CORBA basic software is the m cover, is the i cover now, only need get final product at each interface server installation one cover CORBA basic software.If promptly there are 10 EMS m/i 〉=10 in each regional EML private network, suppose m=100, each License16 ten thousand RMB, expense can save 1,440 ten thousand so, and expense only needs original 1/10.

Convenient interface centralized management, simplification engineering maintenance

The same, originally need be at m local maintenance interface, a general EMS is positioned at districts and cities, now only needs the interface system group on the maintenance interface server to get final product.

Reduce the complexity of networking

The degree of node has determined the connection complexity of processing node, if the conference of spending of individual node causes this node to become communication performance bottleneck; And network diameter has determined message propagation time delay (Latency).The network diameter of keeping minimum node degree and minimum is the basic principle of networking.

Connection in the Telecommunication Management Network management system between NMS, interface and the EMS is a relative fixed and lasting, connects from logic and belongs to static network.The complexity of static network and the degree of maximum node (degree) and network diameter (diameter) are directly proportional, i.e. C=kd, C are that network connects complexity, and k is a network diameter, and d is the maximum node degree.The degree of node refers to be connected in the drawings the maximum limit number of node, and network diameter refers to any minimum limit number of point-to-point transmission among the figure.

The network of Fig. 3 a connects complexity:

(1) because communication only occurs in EMS-NMS, NMS-NMS, just between the NMS-EMS-NMS, so k=2;

The node degree maximum be that the NMS system is m

So c=2m.

The network of Fig. 3 b connects complexity:

(1) communication occurs in the EMS-interface server, and interface server-NMS, NMS-NMS are just between NMS-interface server-NMS, so k=2;

(2) node of degree maximum is the interface server node, because EMS system sum is fixing, therefore has only when middle node number is identical in all EMS private networks, and the degree of node maximum could be minimum, d 〉=(m/i+n);

(3) network has increased i interface server node, because i＜＜m+n, therefore in this programme, put aside the influence that network is connected complexity;

(4) suppose that EMS private network interior nodes number is identical, then c=2 (m/i+n).

If the network complexity of Fig. 3 b then must be satisfied less than Fig. 3 a:

2(m/i+n)≤2m

i≥m/(m-n)；

Because m〉〉 n, m/ (m-n) ≈ 1 is so as long as i can make new networking structure be superior to original structure greater than 1, this condition is set up in actual networking substantially, so this programme can be optimized network configuration.

The concrete sample of networking such as Fig. 6.

Fig. 6 describes an actual try net of being made up of floating interface+multi-homed host of testing, and this try net is Informix7.30 based on database software, and CORBA software is Orbix6.1 and JDK1.4.2, and the communication protocol between the CORBA bus is IIOP.The situation that this networking test sample has been tested floating interface function and multihead management, promptly NMS1, NMS2 manage A1, A2 simultaneously.

1, concrete configuration:

(1) NMS1, operation NMS system on the NMS2 main frame, the EMS system on A1, the A2 is all managed in the NMS system management on every main frame.Link field of configuration is connected to as client on the CORBA territory of multi-homed host on NMS1, NMS2, and domain name is WRI-domain in this sample.

(2) A1 and A2 are the EMS systems, and installation and operation EMS management system and EMS side RPC agency is the Armyapi program in this sample thereon, can be mutual by communication frame and floating interface.Wherein A1 is a synchronous digital hierarchy SDH webmaster, and A2 is a wavelength-division multiplex system WDM webmaster;

(3) A is a multi-homed host, and the floating interface system is installed thereon, is NI814 system, Orbix6.1, JDK1.4.2 running environment and database client in this sample.And the territory of configuration WRI-domain.A has two network interface cards, and IP disposes as shown in the figure, 1, two network interface card of host name A binding network interface card not in the inside, same territory.

(4) network interface card 1 (10.22.9.75) of A links to each other with the 10.22.9.0 network segment, and operation CORBA bus and two floating interface examples are managed A1 respectively, A2, and these two floating interface examples are called N1, N2.

(a) CORBA configuration: create the CORBA territory on this address, domain name is WRI-domain in this sample, and services such as notice notify, name naming, location locator externally are provided.

(b) NameSpace issue: create the context node of trade name WRI by name under the NameSpace root node, for A1 distributes unique relatively ID=1 in the WRI-domain territory, the ID that distributes for A2 is 2 in floating interface preliminary examination configuration file.EmsSessionFactory of each interface instance each issue in NameSpace, title is respectively/EMS_1/emsSessionFactory and/EMS_1/emsSessionFactory; Other CORBA object by that analogy.

(5) network interface card 2 links to each other with All hosts in the 10.22.18.0 network segment, and N1, N2 are mutual by the EMS side RPC agency of network interface card 2 (10.22.18.4) and A1, A2.

(a) N1, N2 bind different listening ports respectively and communicate by letter with A1, A2, and port is specified by floating interface preliminary examination configuration file, and the listening port of N1 correspondence is 2666 in this sample, and the listening port of N2 correspondence is 2667;

(b) be the database server title that N1, N2 specify A1, A2 in the preliminary examination file, obtain data by the INFORMIX client from far-end, the A1 database server of appointment in this sample is o1_sunbeacher, and the A2 database server is o1_taoyufen;

2, operating procedure:

(1) builds operation platform according to above-mentioned configuration.

(2) moving Element management system on A1, the A2 main frame, is OTNM2000 and RPC agency in this sample, the Armyapi program.

(3) on A, start CORBA and be engaged in, move an EML-NML floating interface example N1 and N2 respectively at A1, A2 then.

(4) on NMS1, NMS2, move NMS respectively, use NMS simulation program-TmfClient in this sample, connect the name service on the multi-homed host A, and obtain quoting of WRI/EMS_1/emsSessionFactory in the NameSpace and WRI/EMS_2/emsSessionFactory, carry out successor operation by quoting of emsSessionFactory then.

Claims (3)

1, a kind of network-building method of the floating interface based on CORBA, mainly comprise TCP/IP and CORBA network communication protocol, floating interface, the network address translation services device, interface server, EMS in the private network, NMS and a public network IP address in the public network, carry out in the following manner: m private network in telecommunication synthesis data communication network (DCN) Access Layer is divided into a private network cluster, m 〉=1, each private network cluster distributes an interface server and a network address translation services device, each EMS system is connected with interface server in the private network cluster, and interface server links to each other with the network address translation services device or interface server and network address translation services device are same computer; Whole floating interfaces of EMS system concentrate on the interface server and move in the private network cluster, and only at this interface server the CORBA basic software are installed, as the platform that releases news and realize asking to the NMS system; The network address translation services device is converted to a public network address statically with the private net address of interface server; All floating interface systems use this public network IP address and NMS system docking on the interface server; Floating interface uses private network IP address and a plurality of different ports on the interface server corresponding EMS system from the private network cluster to obtain necessary information; The NMS system obtains floating interface issue CORBA objective for implementation by CORBA name service in the public network, and carries out interoperability; NMS system in the DCN network operates all EMS systems in the private network cluster by the public network IP address of network address translation services device; Described floating interface is exactly that the EML-NML interface is realized unsteady method, the EML-NML floating interface adopts CORBA as the bottom communication model, this interface mainly comprises Element management system EMS encapsulated layer, application protocol conversion layer and corba interface are realized layer, the EMS encapsulated layer is acted on behalf of two parts by interface side encapsulated layer and EMS side remote procedure call RPC and is formed, carry out according to the following steps: the EMS encapsulated layer provides EMS with dynamic base and former code close coupled system functional interface is packaged into network-based remote and calls the RPC interface, when interface need call the EMS systemic-function, by the EMS encapsulated layer function type and parameter are packaged into RPC interface type and parameter, and send to EMS side RPC agency, by EMS side RPC scheduling agent EMS function and return results; Protocol conversion layer will change the information model of TMF608 normalized definition from the information that the EMS system obtains into; Corba interface is realized layer definition IDL interface document.

2, network-building method according to claim 1, it is characterized in that: described network address translation services device adopts the static network address switch technology, two kinds of implementations are arranged: multi-homed host mode and network address translation (nat) mode, for the multi-homed host mode, whole floating interfaces that all EMS systems provide in private network cluster directly run on the multi-homed host, and just network address translation services device and interface server are same computer; For the NAT mode, a described interface server is provided in each private network cluster, statically the interface server private network IP address transition of each private network cluster correspondence is become public network IP address by the NAT server.

3, network-building method according to claim 1, it is characterized in that: the spatial distribution of described CORBA name is: each interface server distributes an independently CORBA territory, be relative unique ID number sign in each this CORBA territory of EMS system assignment category on interface server, when the floating interface system issue CORBA object in NameSpace with ID number and the object oriented differentiation of trade name, EMS.

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