Job Management Partner 1/Integrated Management - Manager Overview and System Design Guide

7.3.3 Communication between the manager and agent

Communication takes place between the manager and agent when the manager sends an instruction to the agent, or the agent sends processing results to the manager.

There are two forms of communication between the manager and agent. In one form, managers communicate with agents according to the hierarchy defined in the JP1/IM system configuration. In the other, the manager communicates directly with the target host. For this reason, take care when using JP1/IM and JP1/Base in a firewall environment or a system made up of multiple LANs.

Figure 7-4 Types of communication between manager and agent

The communication that takes place between manager and agent is described below, categorized according to the form of communication involved.

Communication based on the system hierarchy

• Distributing configuration definitions
  Configuration definition information is distributed to each host in the system, according to the hierarchy defined in the configuration definition file.
  
• Executing commands from JP1/IM - View
  Command execution requests are sent down through lower-level hosts according to the system hierarchy, and the execution results are forwarded through higher-level hosts as defined in the hierarchy.
  
• Executing commands by automated action
  Command execution requests are sent down through lower-level hosts according to the system hierarchy, and the execution results are forwarded through higher-level hosts as defined in the hierarchy.
  
• Forwarding JP1 events
  Under the default settings, JP1 events are forwarded through higher-level hosts according to the system hierarchy.
  

The following table lists the ports used when communication is based on the system hierarchy.

Table 7-8 Port numbers used for communication based on the system hierarchy

Service	Port number	Description
jp1imrt	20237/tcp	Used to distribute configuration definitions.
jp1imcmdc	20239/tcp	Used for the following tasks: Executing commands from JP1/IM - View Executing commands by automated action
jp1imevt	20098/tcp	Used to forward JP1 events.

Communicating directly with the target host

• Searching for events
  The manager communicates directly with the target host.
  
• Collecting and distributing event service definitions
  Definition information is collected and distributed by communicating directly with all the hosts in the configuration definition file.
  
• Auto-generating a monitoring tree
  Definition information is collected from all products that support the auto-generation function of JP1/IM - Manager (JP1/IM - Central Scope), by communicating directly with each host.
  
• Using the jcochstat command
  The manager communicates directly with the host specified as the command argument.
  
• Canceling an automated action from JP1/IM - View or using the jcacancel command
  The manager communicates directly with the host where the action is to be cancelled.
  
• Using the jcocmdshow and jcocmddel commands
  The manager communicates directly with the host specified as the command argument.
  

The following table lists the ports used for direct communication with a target host.

Table 7-9 Ports used for direct communication with target hosts

Service	Port number	Description
jp1imevtapi	20099/tcp	Used to conduct an event search.
jp1bsplugin	20306/tcp	Used for the following tasks: Collecting and distributing event service definitions Auto-generating a monitoring tree Canceling an automated action from JP1/IM - View jcacancel command jcocmdshow and jcocmddel commands
jp1imevtcon	20115/tcp	Used by the jcochstat command.

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