Job Management Partner 1/Base User's Guide

4.2 Using JP1/Base on multiple networks

This section describes how to use JP1/Base in multiple networks and how you should configure the communication settings for this use.

When you use only physical hosts on a host connected by multiple NICs to multiple networks, JP1/Base can be used in the default setting (ANY binding method). There is no need to change the communication settings.

When you use logical hosts on a host connected by multiple NICs to multiple networks (cluster operation), you need to change communication settings of JP1/Base. The following descriptions about communication settings are based on the system configuration example shown in the following figure.

Figure 4-2 A system configuration example to use JP1/Base in a cluster system on a host connected to multiple networks

Organization of this section

(1) Conditions

(2) Concept of communication

(3) Communication settings

(1) Conditions

The communication settings need to be changed if the following conditions are satisfied:

hostA has 2 NICs and each of them is part of a separate subnet.

The host name of hostA (physical host) resolves to the IP address 10.0.0.10 and the host name of logicalA (logical host) resolves to the IP address 20.0.0.10.

(2) Concept of communication

The physical host hostA is handled as a host within subnet1 and the logical host logicalA behaves as a host connected to subnet2 only. In this case, hostX in subnet1 can communicate with hostA, but not with logicalA. Similarly, hostY, which is in subnet2, can communicate with logicalA, but not with hostA. Therefore, you must change the communication settings to enable communications between hostX and logicalA and between hostY and hostA.

(3) Communication settings

To enable communication between all hosts, you need to configure the routing between subnets (there is no need to change the communication settings of JP1/Base). For information about the port numbers used in JP1/Base, see C.1 Port numbers for JP1/Base. By specifying routing settings, you can enable communications between hostX and logicalA, and between hostY and hostA.

Figure 4-3 A system configuration example of routing settings

You might not want to configure the routing settings for several reasons, such as your networks do not support routing, or you do not want to allow communications between subnets. If this is the case, you can change the communication settings to use JP1/Base in an environment of distinct networks. This functionality is called multi-LAN connectivity, and has been supported from JP1/Base 06-71. For details, see 4.3 Using JP1/Base in an environment of distinct networks.

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