Rockwell Automation Ethernet Design Considerations Reference Manual - Manual (Page 77)

Rockwell Automation Publication ENET-RM002C-EN-P - May 2013 77
EtherNet/IP Protocol Chapter 4
Connectivity to IT While IT and controls engineers are often managed separately and given separate
job performance goals, those goals are beginning to align because the availability
of information is crucially important in both roles. Some companies are
beginning to form hybrid groups and hire individuals with experience in both
areas to form policies, guidelines, and procedures for design and maintenance of a
common network architecture.
Security Policies IT Network Controls Network
Focus Protect intellectual property and company assets 24/7 operations
High overall equipment effectiveness
Priorities 1. Confidentiality
2. Integrity
3. Availability 1. Availability
2. Integrity
3. Confidentiality
Types of data traffic Converged network of data, voice, and video Converged network of data, control, information, safety,
and motion
Access control Strict network authentication and access policies Strict physical access
Simple network device access
Implications of a device failure Continues to operate Can stop operation
Threat protection Shut down access to detected threat Potentially keep operating with a detected threat
Upgrades As soon as possible
During uptime Scheduled
During downtime
Enterprise Business Systems
Level 4
Data Center
IT Network
Industrial Network Level 3 - Site Operations
• FactoryTalk® Application Servers
• FactoryTalk Services Platform
• Data Servers
DIO
DIO
DIO
Drive
Controller
HMI
HMI
Drive
Camera
Controller
Controller
Drive
HMI
Stratix 8000
Layer 2 Switch
Filling Cell/Area Zone
Levels 0-2
Ring Topology
Device Level Ring Processing Cell/Area Zone
Levels 0-2
Ring Topology
Resilient Ethernet Protocol (REP)
Material Handling Cell/Area Zone
Levels 0-2
Bus/Star Topology