PARAMETERS AND COMMUNICATION EFFICIENCIES IN THE MODELING OF A PACKET SWITCHING NETWORK.

This paper identifies the basic traffic parameters involved in the analysis of a packet switching network and its nodes. A virtual call of the CCITTX. 25 protocol is considered in order to derive the basic flow in the network. Traffic offered to the various hierarchical levels of the network depends on the information increase imposed by the protocol. Several efficiency levels are derived at different time levels and are used to relate network traffic to user traffic. The sensitivities of these efficiency levels to packet size, packet delay, and window size are evaluated in the article for both interactive and batch traffic.