2.10 Communication protocols of JP1/Base
This section provides an overview of the communication protocols used by JP1/Base. The communication concepts describes in this section and in 6. JP1/Base Communication Settings According to Network Configurations also apply to products such as JP1/IM and JP1/AJS for which JP1/Base is a prerequisite.
JP1/Base supports two communication protocols: an appropriate protocol is automatically selected when you install JP1/Base or set up the logical host.
You might have to manually set up a communication protocol depending on the network configuration or operation method. For details on JP1/Base communication settings for different network configurations, see 6. JP1/Base Communication Settings According to Network Configurations.
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As for communication with the event service, only a dedicated communication protocol that uses an event server settings file (conf) was supported in JP1/Base version 9 or earlier. In JP1/Base version 10 or later, jp1hosts2 information is supported. As with other types of JP1/Base functionality, communication based on jp1hosts2 information also uses the communication settings of JP1/Base. We recommend that you use jp1hosts2 information for communication unless you have a specific reason for using jp1hosts information. Note that communication with the event service does not support the communication settings in version 06-51 or earlier.
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When using jp1hosts2 information, the host definition that is defined for a physical host for name resolution can also be used for the logical host. This functionality is called physical merge mechanism. Unless there is any special reason, we recommend that you create a host definition only for the physical host.
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