Rockwell-automation Ethernet Design Considerations Reference Manual Instrukcja Użytkownika Pobierz pdf (Strona 27)

Rockwell Automation Publication ENET-RM002C-EN-P - May 2013 27

Ethernet Infrastructure Components Chapter 2

Routers and Gateways

Routers and gateways use the network portion of IP addresses to identify the

location of networks. A routing table lets a device know from which port to

transmit a message, so the message can get to a particular network. If that

network is not directly attached to the device, it forwards the message to the next

gateway or router in the path for further routing.

Routing Table

Network

Port

10.17.10.0

10.10.10.0

10.17.10.56

VLAN 17

Subnet 10.17.10.0

Subnet Mask

255.255.255.0

Default Gateway

10.10.10.1

10.17.10.1

VLAN 10

Subnet 10.10.10.0

Subnet Mask

255.255.255.0

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 105 106

Reference Manual 1
Important User Information 2
Summary of Changes 3
New and Updated 3
Information 3
Table of Contents 5
Chapter 4 6
Chapter 5 6
Predict System Performance 6
Studio 5000 Environment 10
Additional Resources 11
EtherNet/IP Overview 13
Network Protocols 14
Configuration Requirements 15
Gateway Address 17
Subnet Mask 18
EtherNet/IP Modules in a 19
Control System 19
Bridge across Networks 20
Chapter 2 21
Topologies 22
Repeaters 25
Media Converters 26
Routers and Gateways 27
Switches 28
Autonegotiation 29
Full-duplex Mode 30
Chapter 3 31
Transmission Packets 32
Transmission Protocols 35
Domain Name System (DNS) 36
Network Address Translation 38
Supported NAT Topologies 39
Virtual LANs and 42
Segmentation 42
VLAN Trunking 44
Quality of Service (QoS) 45
Resiliency 46
Resiliency Protocols 47
EtherChannel Protocol 49
Flex Links Protocol 50
Device-level Ring (DLR) 52
Forwarding 54
Blocking 54
Internet Group Management 55
Protocol (IGMP) 55
Port Security 56
Security Violations 57
Device Commissioning 58
EtherNet/IP Protocol 59
Terminology 61
TCP Connections 62
CIP Connections 62
CIP Connection Message Types 63
CIP Connection Types 63
EtherNet/IP Network 66
Specifications 66
Packets Rate Capacity 69
Requested Packet 70
Interval (RPI) 70
Messaging 71
Explicit Messages 72
CIP Safety 73
CIP Sync 74
Integrated Motion on an 76
Connectivity to IT 77
System Prediction Goals 80
Step 4 or 6: 81
Does System 81
Performance Calculations 83
Calculate Packets/Second 86
(Fastest) 88
Example: Predict System 90
Performance 90
Explicit Messaging 92
1756-EN2T Module 1 93
MAX (Rack-optimized) 98
MAX (Analog Non-Isolated) 98
MAX (Produced/Consumed Tag) 98
Rockwell Automation Support 106
Documentation Feedback 106

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