Schneider Optics Web Embedded Server - Manual (Page 24)

Introduction
14 840 USE 115 00 Version 1.0
Segregating
Traffic The best method to protect Quantum Automation traffic from information systems
traffic is to provide a completely separate physical network for automation control.
Another method is to use readily available Ethernet devices such as bridges and
routers to logically segment the network, isolating office traffic from control data.
Minimizing
Delays Components such as repeaters, bridges, routers and hubs take a finite time to
process each message. If messages pass through many of these devices,
processing delays will accumulate. Delay times are available from device
manufacturers. Check with your network administrator to quantify the effect on
control messages and to determine whether it will be significant for your
application.
Using Switches Ethernet switches can be used to ensure higher network performance. These
newer devices allow each connection to have access to the full 10 Mbps bandwith
instead of having to share the bandwith with all other nodes. They reduce the
timing problems associated with Ethernet collisions and the resulting “back off”
transmission delays. Check with your network administrator to see if your
application would benefit from switching Ethernet devices.