Installation guide

Network Infrastructure for EtherNet/IP™
Deploying the Network
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10.88.80.110 and the IP Source Address 10.88.80.100. The packet rate will be 200 packets per second,
consisting of 100 multicast and 100 unicast packets per second.
5.2.3 IP Multicast Traffic in EtherNet/IP Networks
To satisfy the performance requirements of the implicit messaging traffic, the following is recommended:
• EtherNet/IP network infrastructure should be based on Ethernet switching technology.
• Micro-segmentation should be used.
• Networks should run in 100-Mbps, full-duplex mode.
Ethernet switches (also called Layer 2 or Ethernet Layer 2 switches) should always be used instead of
hubs. Only one device (end-node) should be connected to a switch port, and, if manual-mode setup is
preferred, switch and device ports should be set to 100-Mbps, full-duplex mode. Switches should support
port mirroring and IGMP snooping. Port mirroring is convenient for diagnostic and troubleshooting and is
covered in Appendix A Recommendations for Ethernet Switches in EtherNet/IP Systems. IGMP snooping
helps to manage multicast traffic and is described in 6 Infrastructure Application Scenarios in more
detail. Without the use of special traffic filtering features, an Ethernet Layer 2 switch normally
retransmits each received IP multicast, broadcast, or unknown unicast packet through all ports.
5.3 Deployment Summary
In many ways wiring, testing, and troubleshooting an EtherNet/IP network is not unlike wiring a complex
telephone system. Cable lengths are more important, and proper termination is a must. In addition to
simple hand-held testers, most of the infrastructure components—routers, switches, and other
equipment—provide built-in testing capabilities for both the physical wiring and for TCP/IP testing.
Checking for obvious potential problems before putting the system into use is important. These problems
include cable routing mistakes, environmental concerns, and location of equipment. Once the wiring is
functioning, the guidelines presented here can be used to check and maintain traffic performance and
flow.