
Introduction
| Segregating | The best method to protect Quantum Automation traffic from information systems | 
| Traffic | 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 | Components such as repeaters, bridges, routers and hubs take a finite time to | 
| Delays | 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. | 
| 14 | 840 USE 115 00 Version 1.0 | 
