RAD Data comm LRS-24 Initializing CM-2

LRS-24 Installation and Operation Manual Chapter 4 Management via the CM-2 Module

Introduction 4-5

• Configuration of the terminal type supported by its supervisory port.

• Configuration of its SNMP agent parameters. This function is needed to

establish communication with SNMP-based management stations, and to

designate the management stations authorized to manage LRS-24.

The configuration activities are a prerequisite for performing other activities. They

must be performed whenever a new CM-2 module is installed in an LRS-24

system.

• Preliminary configuration required by I/O modules is described in their

Installation and Operation Manuals. A complete set of preliminary

configuration activities, which are actually required only for modules with

internal SNMP agent, must also include configuration of I/O module

supervisory port.

• Remote connection involves an update in the management station’s screen in

order to receive Traps.

Initializing CM-2

The management module of the CM-2 module is designed for plug-and-play

support. As explained above, this includes automatic identification of the modules

installed in LRS-24, the management protocols that can be used for each module,

the preliminary configuration data, and other relevant information.

These activities are performed automatically, without any user intervention:

• Upon power-up

• Upon inserting or removing a module

• Upon moving a module to a new position in the enclosure.

These capabilities are essential to enable the replacement of modules while

LRS-24 is powered, without disrupting the operation of the equipment. In

addition, the CM-2 module includes provisions to ensure that the service provided

by the links supported by the modules installed in LRS-24 is not disrupted when

the module is temporarily removed, or even when the CM-2 module is completely

replaced. However, when the CM-2 module is removed, it is not possible to

perform monitoring and configuration activities.

The functions performed during initialization are adapted to the management

requirements of each type of module.

The CM-2 module does not store parameters for modules with an internal SNMP

agent because they store their configuration data locally. However, the CM-2

module must detect the presence of these modules (whether present upon

power-up or inserted later), and transfer the configuration parameters needed for

starting the management communication.

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