Network Infrastructure for EtherNet/IP: Introduction and. Document Reference Number: ENET-TDA-EN-P http://literature. pdf . Availability: Whenever possible, most network designs are built .
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Documents Flashcards Grammar checker. Reference Manual Embedded Switch Technology Reference Architectures Important User Information Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Because eneg this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. No patent liability is assumed by Rockwell Automation, Inc. Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc. Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss. Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.
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Embedded Switch Technology Reference Architectures Reference
Labels may be on or dnet the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures. Trademarks not belonging to Rockwell Automation are property of their respective companies. Table of Contents Preface Switch Topology. Mixed Embedded Switch and Single-port Technology.
Guidelines for Connecting Device-level and Switch Topologies. Considerations for Resiliency Protocols. Switch Redundant Star Timeout. This model uses a multi-tier, switch topology to provide the following: With embedded switch technology, IACS end-devices can be directly connected to each other without the need for additional IES switches. Embedded switch technology adds the choices of device-level topologies: We do not recommend connecting device-level topologies directly to Layer 3 distribution switches.
Allen-Bradley devices with embedded switch technology have these features in common: The remaining two ports on the embedded switch are connected to ports 1 and 2 on the module, which connect the module to the device-level topology. Because these ports are connected to a single NIC, they cannot be used to connect to multiple Ethernet networks. Use the embedded switch technology in the following situations: Linear Network A linear network is a collection of devices that are daisy-chained together.
Td01 additional switches are required. Figure 3 – Example Linear Network F6 1 Front Front 2 Rear These are the primary advantages of a linear network: This topology is also implemented at the device level. Back-up supervisor nodes and ring nodes monitor the beacon frames to track ring transitions between Normal all links are working and Faulted the ring is broken in at least one place states.
If the back-up supervisor does not hear the supervisor for a period of time, it assumes the supervisor failed and takes over the supervisor role. The advantages of the DLR network include the following: Industrial Automation Wiring and Grounding Guidelines, publication Product Certifications website, http: You can view t001 download publications at http: To order paper copies of technical documentation, contact your local Allen-Bradley distributor or Rockwell Automation sales representative.
Both linear and DLR topologies can be connected to a switch topology. Those devices either have an embedded switch or use an ETAP to connect to the topology. The devices can be directly connected to the IES switch or via a device-level topology. This reduces the number of ports needed on the IES switch.
Ne lets you combine both single-port devices and devices with embedded switch technology. This topology also lets you connect multiple, device-level topologies to the same IES switch. You can also achieve the same effect with subnet and VLAN design.
The disadvantage of this topology is that it may require direct connection to the device-level topology for maintenance operations of non-CIP devices, such as diagnostics and configuration.
This topology can also provide a false sense of security in that it does not filter CIP traffic between the IES switch topology and the device-level topology. It acts as an application-layer bridge and forwards CIP traffic from the switch topology to the device-level topology. We do not recommend using device-level topologies as the backbone of the network.
This allows for a ring fault recovery time of less than 3ms. It is important to note that the dnet fault recovery time assumes the length of the links is m or less. Supervisor The DLR ring supervisor maintains a loop-free topology by blocking port 2 of the embedded-switch device. If the supervisor detects a fault in the network it unblocks port two until the fault is corrected. It is important to remember to enable a ring supervisor before closing the DLR ring. If the ring closed before the supervisor is enabled, a bridge loop results, which generates a broadcast storm.
It is possible under rare circumstances or misconfiguration that the supervisor will fail but traffic will continue to flow. Ttd001 creates an unblocked, bridge loop in the DLR ring. To avoid this, configure a secondary supervisor in the ring. In the event that the primary supervisor fails, the secondary supervisor detects the fault and block its port two in about 4 ms.
Rockwell Automation does not recommends enabling a ring supervisor on a linear topology. This beacon adds up to 2, pps of traffic that is only needed in a ring topology. The remaining modules are not assigned IP addresses. For example, do not use a DLR topology as a backbone network for switches. Many of the protocols used by managed switches expect that eent switches are direct neighbors to each other.
Inserting td0001 topologies between the managed switches may lead to unexpected results.
HMI In this case, the unmanaged switch does not introduce a loop into the network and does not interact with the IES switches. MSTP Ring Redundant star Any communication from a device-level topology to a switch topology has the potential for packet loss. The packet loss does not occur between devices on a device-level topology. If you must mix MSTP protocol with embedded switch topology, we recommend using either a device-level or physical chassis segmentation topology.
The device-level topology limits the scope of the issue to communication through the te001 and peer-to-peer devices. The chassis segmentation topology keeps the embedded switch topology completely isolated from the MSTP network. EtherChannel Redundant star Use the mixed topology when connecting to a network using EtherChannel protocol. Flex Links Redundant star Use the mixed topology when connecting to a network using Flex Links protocol.
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Any timeouts or faults on the controllers are counted as a timeouts in the test results. The tests use a traffic generator ixia traffic simulator snet measure network recovery performance for both unicast and multicast traffic.
The ring has two supervisors configured. There are three break points in the ring: A topology change in the DLR always forces some of the traffic to be redirected down an alternate path.
In these tests, the ring is connected to additional switches. There are three break points in this topology: There are two break points in the redundant star topology: Test Description Switch ring This test measures timeouts in the DLR topology due to 10 software shutdowns and 10 physical disconnections in the switch ring.
The test examines the following conditions: This test td0001 DLR outages when the main switch ring experiences a disruption. This test verifies that a disruption to the switch ring has no impact on the DLR topology. Switch redundant star This test measures timeouts in the DLR topology due to 10 software shutdowns and 10 physical disconnections in the redundant star topology.
This test assesses DLR outages when the redundant switch topology experiences a disruption. DLR break supervisor port 1 This test measures timeouts in the DLR topology due to port 1 of the supervisor experiencing 10 software shutdowns and 10 physical disconnections.
This test verifies connectivity from outside the Ebet topology to inside hd001 a topology change. During normal operation all ent ring traffic is flowing through this port.
Embedded Switch Technology Reference Architectures Reference
This test verifies the detection of a failed supervisor. The backup supervisor must detect that the supervisor is no longer present and block port 2.
A loop will exist in the network for as long as 4 ms during this test.
The tests record the following timeouts: A block on either of these ports is acceptable. A failure introduced at IES-7 forces a topology change. A physical failure consists of unplugging the fiber cable from the port.