All Ethernet capabilities needed for higher level functions are available. . A network manager can control and observe the node and the network as they function. . The design complies with other applicable specifications. . The design can be adapted to the varied requirements of legitimately different products. Be efficient in usage of processor, memory, and network. .
Required functions are simple to implement. .
Usage is predictable, simple, and consistent. . Node and network operation continue in the face of software, hardware, or management problems. . Security will not be decreased from the low level that is already present in a broadcast network. High level functions addressed beyond those required for minimal maintenance. General network functions and most management functions are left for higher level definition.