  The SNS control system communication network will take advantage of new,
commercially available network switch features to increase reliability and
reduce cost. A standard structured cable system will be installed. The
decreasing cost of network switches will enable SNS to push the edge switches
out near the networked devices and to run high-speed fiber communications all
the way to the edge switches. Virtual Local Area Network VLAN) technology will
be used to group network devices into logical subnets while minimizing the
number of switches required. Commercially available single-board computers with
TCP/IP interfaces will be used to provide terminal service plus remote power
reboot service.
