
Rockwell Automation Publication 1783-UM007I-EN-P - December 2017
277
Configure Switch Features
Chapter 3
Virtual Local Area Networks
(VLANs)
A VLAN is a logical segment of the network that isolates traffic types and
helps prevent collisions among data packets. Isolating different types of traffic
helps to preserve the quality of the transmission and to minimize excess traffic
among the logical segments. VLANs also reduce the amount of administrative
effort that is required to examine requests to network resources.
You can assign each switch port to a VLAN as described on
•
Devices that are attached to switch ports with the same VLAN can
communicate only with each other and can share data.
•
Devices that are attached to switch ports with different VLANs cannot
communicate with each other through the switch, unless the switch is
configured for routing.
•
All ports are initially assigned to the default VLAN, which is VLAN 1.
We recommend that you first determine your VLAN needs before creating
VLANs. For more information about VLANs, refer to these publications:
•
Converged Plantwide Ethernet (CPwE) Design and Implementation
Guide, publication
•
Ethernet Design Considerations, publication
The switch supports a maximum of 255 VLANs, including the default VLAN.
Each VLAN has a name and ID number. The ID can be from 1...1001 and
1005...4094.
With custom Smartport roles, you can specify the type of VLAN you want to
implement on a port. For more information about custom Smartport roles, see
.
IMPORTANT
A Layer 3 switch or router must be configured to enable routing across
multiple VLANs and additional security policies must be set.
IMPORTANT
Changes to VLAN assignments on a port with Network Address Translation
(NAT) can break existing NAT configurations. Review your NAT configurations
to make sure that VLAN assignments are correct.
IMPORTANT
If your network uses a DHCP server, be sure that the server can access all
devices in all VLANs.
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Страница 10: ...10 Rockwell Automation Publication 1783 UM007I EN P December 2017 Table of Contents Notes ...
Страница 12: ...12 Rockwell Automation Publication 1783 UM007I EN P December 2017 Preface Notes ...
Страница 72: ...72 Rockwell Automation Publication 1783 UM007I EN P December 2017 Chapter 2 Get Started Notes ...
Страница 148: ...148 Rockwell Automation Publication 1783 UM007I EN P December 2017 Chapter 3 Configure Switch Features ...
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Страница 317: ...Rockwell Automation Publication 1783 UM007I EN P December 2017 317 Monitor the Switch Chapter 4 ...
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Страница 338: ...338 Rockwell Automation Publication 1783 UM007I EN P December 2017 Chapter 5 Troubleshoot the Switch Notes ...
Страница 396: ...396 Rockwell Automation Publication 1783 UM007I EN P December 2017 Appendix A DataTypes Notes ...
Страница 404: ...404 Rockwell Automation Publication 1783 UM007I EN P December 2017 Appendix B Port Assignments for CIP Data Notes ...
Страница 450: ...450 Rockwell Automation Publication 1783 UM007I EN P December 2017 Appendix D Cables and Connectors Notes ...
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