Finding the host ID

Default host ID values for Windows® or UNIX® systems.

The term host ID is a generic term that specifies the computer hard disk drive serial number or Ethernet address (network ID).

With IBM Rational Common Licensing (powered by FLEXlm software), the default host ID value on Windows computers is the serial number of the startup hard disk drive. In this case, the host ID field is: DISK_SERIAL_NUM=nnnnnnn. Example: DISK_SERIAL_NUM=12345678.

The default host ID value on UNIX system computers is the Ethernet address of the system written in this format: HOSTID=nnnnnnnnnnnn. Do not confuse the format HOSTID=nnnnnnnnnnnn with the hard disk drive serial number format DISK_SERIAL_NUM=nnnnnnnn that is referred to in IBM Rational® documentation, online Help, and Rational License Key Center as the host ID.

A single key cannot contain multiple values for a host ID.