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Ethernet Error (TCPP0004): The DNS hostname '...' of device '...' has invalid syntax.

Remedy

  1. Double-click the error message.

    The corresponding editor is opened and the suspected Name of Station is marked.

  2. Correct the Name of Station according to the naming rules shown here.

Naming rules (syntax) for the Name of Station (DNS name) according to RFC 5890

  • The Name of Station is encoded as OctetString data type.
  • Total length: 1 up to 240 octets or 253 characters max.
  • An empty string (0 octets) means that no Name of Station is assigned.
  • Composed of one or more segments (labels), separated by a dot '.'.
  • Segment (label) length: 1 to 63 characters.
    Segments must not be empty.
  • Segment (label) consists of 'a-z', '0-9' and '-'.
  • Segment (label) must not start or end with '-'.
  • The first segment must not have the form "port-xyz" or "port-xyz-abcde" with a, b, c, d, e, x, y, z = 0..9.
  • Name of Station must not have the form a.b.c.d with a, b, c, d = 0..999.