Rules for LU name specification

Rules: Observe the following rules for LU name specification:
  • The first character must be in the range A through Z, @, #, or $. In addition, remaining characters can also be numeric (any single digit 0 through 9). Unprintable characters are not allowed. If a name that is not valid is found, an error message is issued and the statement is ignored.
  • LUs can be defined as a range. Use the following syntax to specify a range of LUs:
    Read syntax diagramSkip visual syntax diagram
    >>-LowerRange..UpperRange--+-------------+---------------------><
                               '-..rangerule-'   
    
    
    • No spaces are allowed within a range definition.
    • UpperRange must be greater than the LowerRange.
    • The lengths of LowerRange or UpperRange, and rangerule must be the same and each must be less than or equal to eight characters.
    • All LUs in the range must be valid and defined to VTAM® for a successful session.
    • The number of LU names in one range is limited to 4 294 967 295. The total number of LU names in the group is also limited to 4 294 967 295. Storage is not used until the LU name is assigned to the connection.
    • The rangerule represents the variant used for wildcarding. For example:
      TCP000A0..TCP9F$ZZ..FFFNX?AB
      where:
      F
      The position is fixed and does not change.
      A
      Alphabetic range.
      N
      Numeric range.
      B
      Alphanumeric range.
      X
      Hexadecimal range.
      ?
      Alphanumeric including national characters @, #, and $.

    If an incorrect range definition is parsed, it is ignored and a debug warning message is issued.

    Result: The range specification AB100..CB299..AFNNN defines AB100-AB999 (900), BB000-BB999 (1000) and CB000-CB299 (300) (2200 names). If a specification of AB100-AB299, BB100-BB299 and CB100-CB299 (600 names) is desired, then two range specifications are required: AB100..CB199..AFFNN AB200..CB299..AFFNN.

    See z/OS Communications Server: IP Configuration Guide for LU range usage examples.

  • If the range rule is omitted, Telnet assumes the following style, where the LowerRange and UpperRange values must be all numeric or all alphabetic:
    LuBase+LowerRange..LuBase+UpperRange