2.1 Transport

Single or multiple discovery information elements are transmitted as part of IEEE802.11 Beacon frames or Probe Response frames.<4> There are no requirements for the order of the information elements. However, the size of individual information elements MUST NOT exceed 255 octets, including the Element ID, the length field, the Organizationally Unique Identifier (OUI), the OUI Type, the format identifier hash, and the discovery data.

The format of information elements is specified in [IEEE802.11-2007] section 7.3.2. The format and processing of Beacon and Probe Response frames are also specified in [IEEE802.11-2007].

To improve transmission behavior and to reduce processing and hardware requirements, it is best if the total size of the discovery information element is kept small.

If multiple information elements are included in the Beacon or Probe Response frame, the maximum size of the Beacon frame, as specified in [IEEE802.11-2007], MUST NOT be exceeded.