Select Host name or IP address as the information type for node identification. Select Host name or IP address according to the ID key for operations setting on the higher system to be connected. The default is Host name. If you select Host name, specify How to resolve IP addresses and When resolution of IP address fails.

Each relay system inherits the ID key for operations from a higher system that is specified as the connection destination. (The relay system receives the key information from the higher system when the relay system establishes a connection with the higher system, and when the relay system's connection is changed to a different higher system.)

(a) How to Resolve IP addresses

For the method to be used to resolve addresses in creating or starting jobs, select Use Network in Windows or Use the system configuration of Software Distribution Manager. The default is Use Network in Windows.

Use Network in Windows

Obtains an IP address from the Windows network when a job is created or started. The hosts file or name server is used for name resolution. If name resolution fails, the IP address is obtained from the system configuration of JP1/Software Distribution.

Use the system configuration of Software Distribution Manager

Obtains the IP address only from the system configuration of JP1/Software Distribution when a job is created or started. In such a case, you must ensure that the IP addresses of the system configuration are always correct. In some environments in which IP addresses are changed dynamically (e.g., DHCP), you can keep system configuration IP addresses correct by using the facility for automatically registering the system configuration.

In an environment in which jobs are created or started when the name server is turned off (such as at night), address resolution may fail and jobs will not be created even if you choose Use Network in Windows. However, choosing Use the system configuration of Software Distribution Manager has the benefit of reducing the time it takes until name resolution fails.

This setting, without resolving addresses, determines the destination of jobs by obtaining the IP address from the system configuration information. That means jobs may not be executable in the following cases:

• When using the host ID
  For details, see 8.2.4(4) Notes on specifying destinations in the manual Administrator's Guide Volume 1 and 4.26.9 JOB_DESTINATION (specifying a job destination) in the manual Administrator's Guide Volume 2.
  
• When using the NAT function
  Job execution requests for a destination cannot be sent when the NAT function is being used. However, jobs can be executed by polling from the destination. For information on how to poll, see 2.13.1(2)(b) Executing a job at an arbitrary time in the manual Description and Planning Guide.
  

(b) When resolution of IP address fails

Select the processing to be performed when the system cannot resolve a destination address during job execution. The default is The job starts. When The job starts is selected, the execution status of the job becomes Waiting for transmission in the event IP address resolution fails. The execution status of a job addressed to a nonexistent destination becomes Waiting for transmission and does not change.

In environments that use a WINS server, the destination address cannot be resolved if the destination client PC is turned off when a job is executed. Thus, if you select The job ends in error, you will not be able to set up an operation that executes jobs on holidays or at night or that automatically starts the client by polling when the system starts. If you wish to set up this type of operation, select The job starts.

When you select The job starts, operation of the Remote Installation Manager may be delayed if an executed job contains a destination whose address cannot be resolved.