Cisco CTM GateWay Guida all'installazione

CHAPTER

1-1

Cisco Transport Manager Release 9.1 GateWay/CORBA User Guide and Programmer Manual

OL-19364-01

Overview of CTM GateWay/CORBA

This chapter provides an overview of CTM GateWay/CORBA. It includes the following information:

•1.1 Features of CTM GateWay/CORBA, page 1-2

•1.2 CTM GateWay/CORBA Fault Management, page 1-3

•1.3 Overview of CORBA Services, page 1-3

•1.4 Information Model, page 1-6

•1.5 Summary, page 1-6

CTM is a highly advanced optical transport domain manager. Open interfaces to Operations Support

Systems (OSSs) using industry-standard protocols make CTM a flexible building block in legacy as well

as next-generation OSS infrastructures. The CTM GateWay/CORBA product is a CORBA northbound

interface that complies with the TMF CORBA specification for network management layer-element

management layer (NML-EML) interfaces.

A programming technology for distributed computing, CORBA enables components of various

application programs to communicate with one another regardless of their implementation

characteristics—programming language, operating system, machine, location, and so on.

CTM GateWay/CORBA allows service providers to implement a programmatic interface between CTM

and various OSS tools in the back office. Such interfaces enable next-generation flow-through equipment

and circuit management, including inventory, provisioning, and assurance functions.

For each NE that CTM manages, the CTM GateWay/CORBA option provides higher-layer management

systems with fault, inventory, and performance information, plus configuration and circuit provisioning

capabilities. CTM GateWay/CORBA supports up to eight simultaneous sessions with higher-layer

management systems.

CTM GateWay/CORBA supports the following NEs in CTM R9.1:

•MGX 8880/8850/8830

•ONS 15200

•ONS 15216

•ONS 15305

•ONS 15310 CL

•ONS 15310 MA SDH

•ONS 15310 MA SONET

•ONS 15327

•ONS 15454 SDH

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Chapter 1 Overview of CTM GateWay/CORBA

1.1 Features of CTM GateWay/CORBA

•ONS 15454 SONET

•ONS 15530

•ONS 15540

•ONS 15600 SDH

•ONS 15600 SONET

The following figure illustrates the CTM GateWay/CORBA communications architecture within a

service provider’s OSS environment.

Figure 1-1 CTM GateWay/CORBA Communications Architecture

The telemanagement community has adopted CORBA as the preferred distribution technology with

which to integrate the various components of an OSS. The Multi Technology Network Management

Working Group of the TMF has been working to create a specification for an NML-EML interface.

CTM GateWay/CORBA is based on the following TMF standards:

•TMF.513 v2.0 (August 2001): Multi Technology Network Management Business Agreement

•TMF.608 v2.0 (August 2001): Multi Technology Network Management Information Agreement

•TMF.814 v3.0 (August 2001): Multi Technology Network Management Solution Set

The TMF.608 document is a protocol-independent information model for the network resources being

managed. The TMF.814 document is the CORBA Interface Data Language (IDL) component of the

specification; it consists of a set of definitions for specific objects and methods that are available for use

at the NML-EML interface for passing information or accomplishing specific actions. However,

TMF.814 is a specific interface implementation based on a TMF high-level business agreement

described by the TMF.513 document. To complete the document set, TMF.814A recognizes that different

parties may provide varying degrees of compliance in their implementations. The TMF.814A document

is called the Implementation Agreement, and is simply a form to be filled out by those parties

implementing TMF.814 to further describe their specific implementations to those who might use them.

1.1 Features of CTM GateWay/CORBA

CTM GateWay/CORBA supports the following TM.814 modules:

•Inventory

–

Element management system (EMS)

–

Multilayer subnetwork

–

Managed element

Service provider's

OSS

CTM

CORBA

TCP

Ethernet

10BASE-T

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Chapter 1 Overview of CTM GateWay/CORBA

1.2 CTM GateWay/CORBA Fault Management

–

Physical termination point (PTP)

–

Connection termination point (CTP)

–

Floating termination point (FTP)

–

Subnetwork connection (SNC)

–

Protection group

–

Equipment

–

Equipment holder

–

Topological link

•Alarm notification

•Retrieval of active alarms on objects where inventory is available

•SNC provisioning

•Equipment provisioning

•Protection operations

•Performance operations

•Maintenance operations

Note Performance and inventory application programming interfaces (APIs) do not retrieve any information

for out-of-service NEs.

The gateway authenticates the northbound OSS. Once authenticated, the OSS can perform operations

and receive alarm notifications.

CTM GateWay/CORBA uses jacORB 2.1.3.7. The corresponding standard is Object Management Group

(OMG) CORBA 2.3.

1.2 CTM GateWay/CORBA Fault Management

CTM GateWay/CORBA forwards all the fault notifications received from managed NEs and all CTM

alarms to the network management system (NMS) through the notification service. Information about

the notification service is available on the OMG website at www.omg.org.

The NMS retrieves all active alarms on the EMS and on managed element objects. The NMS filters

alarms based on probable cause, perceived severity, and managed element name.

1.3 Overview of CORBA Services

CTM GateWay/CORBA uses two CORBA services—naming service and notification service. The

naming service is required for CTM GateWay/CORBA to function. If the notification service is not

available, alarm and event notifications are not forwarded to the OSS. By default, the naming and

notification services are installed on the CTM server during the GateWay/CORBA installation. However,

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Chapter 1 Overview of CTM GateWay/CORBA

1.3.1 Naming Service

the CORBA services can be located anywhere as long as they are accessible from the CTM server on

which CTM GateWay/CORBA is installed. The OSS application(s) must also use the same instances of

the naming service and the notification service.

1.3.1 Naming Service

CTM GateWay/CORBA and the other CTM server processes must use a naming service in order to

operate. CTM GateWay/CORBA includes the OpenFusion naming service product. By default,

CTM GateWay/CORBA is configured to use OpenFusion. However, you can configure

CTM GateWay/CORBA and the CTM server to use a different centralized naming service. For more

information, see B.6 Using Multiple Naming Servers, page B-4.

1.3.2 Notification Service

CTM GateWay/CORBA must use a CORBA notification service to report faults and events.

CTM GateWay/CORBA includes the PrismTech OpenFusion notification service product, and is

configured by default to use it. As with the naming service, you can configure CTM GateWay/CORBA

to use a different notification service. For more information, see A.1 Overview of Notifications,

page A-1.

The following scenarios describe possible configurations of the naming and notification services.

Scenario 1: Naming and Notification Services Installed on the CTM Server

The naming and notification services are installed on the CTM server workstation as shown in the

following figure.

Figure 1-2 Naming and Notification Services on the CTM Server Workstation

The notification service must be installed on the CTM server workstation with the CTM server

processes. CTM GateWay/CORBA is configured to use this notification service. The NMS processes

must be configured to use the notification and naming services on the CTM server workstation.

CTM

Server

GateWay

CORBA

Naming

Service

Notification

Service

Workstation A

LAN Communication

NMS Server

CTM Server

Workstation B

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Chapter 1 Overview of CTM GateWay/CORBA

1.3.2 Notification Service

Scenario 2: Naming and Notification Services Installed on the NMS Workstation

The naming and notification services are installed on the NMS workstation as shown in the following

figure.

Figure 1-3 Naming and Notification Services on the NMS Workstation

The CTM server processes and CTM GateWay/CORBA must be configured to use the naming and

notification services on the NMS workstation.

CTM

Server

GateWay

CORBA

Naming

Service

Notification

Service

Workstation A

LAN

Communication

NMS Server

CTM Server

Workstation B

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Chapter 1 Overview of CTM GateWay/CORBA

1.4 Information Model

Scenario 3: Naming and Notification Services Installed on Independent Servers

The naming and notification services are installed on independent servers as shown in the following

figure.

Figure 1-4 Naming and Notification Services on Independent Servers

The CTM server processes, CTM GateWay/CORBA, and the NMS processes must be configured to use

the naming and notification services on independent workstations.

1.4 Information Model

The information model used by the CTM GateWay/CORBA northbound interface is based on the TMF

NML-EML CORBA interface—TMF.814 v3.0. This standard is available to TMF members from the

TMF website. The information model allows the EMS to provide an abstraction layer between the EMS

and the NMS. This standard is generic and is, therefore, applicable to many different EMS and NE

implementations. Customers implementing a TMF-compliant CORBA interface between a specific NMS

and CTM must use the CTM GateWay/CORBA product, and will require specific information on what

API features are implemented and how those features should be used.

1.5 Summary

As a state-of-the-art EMS, CTM can provide a CORBA-based interface between itself and an NMS. This

functionality is provided by a separately purchasable option—CTM GateWay/CORBA.

CTM GateWay/CORBA provides a TMF-compliant CORBA interface in accordance with the TMF

NML-EML specification composed of TMF.513, TMF.608, and TMF.814. CTM GateWay/CORBA

Workstation A

NMS Server

CTM Server

CTM

Server

Centralized Naming

Service

LAN

Communications

Centralized

Notification

Service

Workstation B

Workstation C

GateWay/

CORBA

201324

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Chapter 1 Overview of CTM GateWay/CORBA

1.5 Summary

includes naming and notification services. Customers can use the bundled naming and notification

services or their own services in various configurations. CTM GateWay/CORBA brings the service

provider one step closer to full OSS automation.

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Chapter 1 Overview of CTM GateWay/CORBA

1.5 Summary

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