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# Unix Machine --> Configuration --> Node Manager

Tasks Related Topics Attributes

## Overview

Before using Node Manager to manage servers in your domain, you must create a configuration entry for each machine that runs a Node Manager process. The machine entry defines the name of a machine, the servers that run on that machine, and the connection information for connecting to a Node Manager process on the machine.

This page defines the listen address and port number that the Administration Server uses to connect with the Node Manger process running on the machine.

## Tasks

Configuring a Machine

Cloning a Machine

Deleting a Machine

Assign a WebLogic Server Instance to a Machine

## Related Topics

Configuring Node Manager

## Attributes

Table 79-1

Attribute Label | Description | Value Constraints
--- | --- | ---
Listen Address | The address on which NodeManager listens for connections. MBean: `weblogic.management. configuration. NodeManagerMBean` Attribute: `ListenAddress` | Default: "localhost" Dynamic: yes
Listen Port | The listen port of the NodeManager MBean: `weblogic.management. configuration. NodeManagerMBean` Attribute: `ListenPort` | Minimum: 0 Maximum: 65534 Default: 5555 Dynamic: yes
Debug Enabled | Whether or not communication with this Node Manager process needs to be debugged. MBean: `weblogic.management. configuration. NodeManagerMBean` Attribute: `DebugEnabled` | Default: false Valid values: true false Dynamic: yes