Job Management Partner 1/Software Distribution Description and Planning Guide

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6.5.3 Multi-polling environment for clients

The configuration of the distribution destinations is defined in the system configuration information, so that jobs for a client are executed according to a predetermined route. Also, the only relay system to which a client will connect is the one defined in the system configuration information.

To specify multiple distribution routes for a client or for a client to connect to multiple relay systems, you must create a multi-polling environment. The relay systems to which the client will connect can be specified with connection priorities. When a multi-polling environment is used, a job can be executed for a target client via a different relay system if an error occurs in the first relay system that is selected. A client can also connect to multiple relay systems according to the connection priorities.

Organization of this subsection
(1) Setting up a multi-polling environment
(2) Selecting a polling method in a multi-polling environment
(3) Notes on the multi-polling environment

(1) Setting up a multi-polling environment

When you set up a client, you can use the Specify Higher Systems dialog box to specify multiple relay systems and assign a priority to each of them:

Figure 6-18 Specify Higher Systems dialog box

[Figure]

Add button
Adds a higher system to be a connection target. You can specify a maximum of eight higher systems. In the Add/Change Higher System dialog box, specify the product type and host name or IP address of the higher system that is to be added.

Update button
Updates the information about a selected higher system. In the Add/Change Higher System dialog box, which is displayed when this button is chosen, specify the product type and host name or IP address.

Delete button
Deletes the selected higher system from the list of higher systems.

Up button
Increases by 1 the priority of the selected higher system.

Down button
Decreases by 1 the priority of the selected higher system.

When you finish specifying the settings, choose the OK button. The Connection Destination page appears again.

(2) Selecting a polling method in a multi-polling environment

A client checks with the higher relay system to see whether there are any jobs addressed to it. This operation is called polling. The method of polling the relay system is set up on the Default Running Status/Polling page of the Client Setup dialog box. The following two polling methods are available:

Hot standby:
With the hot-standby method, only one relay system is polled. Normally, the relay system with the highest priority, as set in the Specify Higher Systems dialog box, is the one that is polled. Only if that relay system cannot be connected is the relay system with the second-highest priority polled. If the second relay system cannot be connected, the relay system with the next-highest priority is polled, and so on, until connection is established with a relay system.

Multiple hosts:
With the multiple-hosts method, all relay systems specified in the Specify Higher Systems dialog box are polled. Polling begins with the relay system with the highest priority.

(3) Notes on the multi-polling environment

Note the following points about operating a client in a multi-polling environment: