scope:

This Defense Standardized Profile (DSP) MIL-STD 2045-14502 applies to end systems operating in the Defense Data Network (DDN). It specifies a combination of layer protocols that collectively provide the Transmission Control Protocol (TCP) over the Internet Protocol (IP) operating over DDN subnetworks. This part of the DSP addresses Layer 1 and 2 requirements for a CSMA/CD Local Area Network (LAN).

This profile contains requirements for both connection-oriented and a connectionless transport service. It also contains requirements for a connectionless network service.

This profile specifies the provision for connectionless or connection-oriented transport service between an end system connected to a subnetwork and another compatible end system through the IP connectionless network service. The compatible end system may use mutually agreed upon access methods contained within this DSP, or may conform to a mutually agreed upon alternative access methods. An end system is compatible only if the suboptions (e.g., TCP) are compatible. This profile provides the subnetwork dependent requirements and the subnetwork access requirements for group XA transport profiles.

The layer standards that make up this profile are shown in Figure 1.

The requirements placed on an end system in the DSP are only those necessary to operate the specified set of protocols. The DSP does not specify the required functions for relays. Such functions are out of scope of this document.