Ethernet Design Considerations for Control System Networks
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Network Hardware Recommendations
Routers
Use a router between the business LAN at your site and the enterprise WAN.
See "Routers" on page 15.
Switches
Use industrial-rated managed switches to connect the computers and devices to each
other within the supervisory-level network and to higher-level networks. The
following switch features are recommended:
VLAN
Full duplex capability on all ports
Autonegotiation and manually configurable speed/duplex
IGMP snooping
Port mirroring
STP
QoS
SNMP
See "Switches" on page 15.
Media Converters
Do not use media converters.
See "Media Converters" on page 22.
IP Addressing Recommendations
Static IP Addressing
Assign static IP addresses to all computers hosting a server in your control system.
Use static IP addresses for all computers in a Workgroup configuration.
See "Static IP Addressing" on page 24.
DHCP
Use DHCP for computers running Rockwell Automation client software.
See "DHCP IP Addressing" on page 24.
Name Resolution
NetBIOS and host name resolution is required.
See "Name Resolution for Distributed Software Systems" on page 24.
Summary :
Ethernet Design Considerations for Control System Networks 46 · · · · · Network Hardware Recommendations Routers Use a router between the business LAN at your site and the enterprise WAN.
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