Editing Distributed Interactive Simulation (section)

==Application protocol==
Simulation state information is encoded in formatted messages, known as [[protocol data unit]]s (PDUs) and exchanged between hosts using existing [[transport layer]] protocols, including [[multicast]], though broadcast [[User Datagram Protocol]] is also supported. There are several versions of the DIS application protocol, not only including the formal standards, but also drafts submitted during the standards balloting process.

* Version 1 - Standard for Distributed Interactive Simulation - Application Protocols, Version 1.0 Draft (1992)
* Version 2 - IEEE 1278-1993
* Version 3 - Standard for Distributed Interactive Simulation - Application Protocols, Version 2.0 Third Draft (May 1993)
* Version 4 - Standard for Distributed Interactive Simulation - Application Protocols, Version 2.0 Fourth Draft (March 1994)
* Version 5 - IEEE 1278.1-1995
* Version 6 - IEEE 1278.1a-1998 (amendment to IEEE 1278.1-1995)
* Version 7 - IEEE 1278.1-2012 (See External Link - DIS Product Development Group.)  Version 7 is also called DIS 7.<ref name="DIS 7" /> This is a major upgrade to DIS to enhance extensibility and flexibility.  It provides extensive clarification and more details of requirements, and adds some higher-fidelity mission capabilities.<ref name="DIS 7" />