802.1Q VLAN User’s Guide
9032599-02
Page
802.1Q VLAN User’s Guide
802.1Q VLAN User’s Guide
CHAPTER
CONTENTS
PREFACE
VIRTUAL LOCAL AREA NETWORKS
CHAPTER
Contents
VLAN CONFIGURATION
802.1Q VLAN User’s Guide
EXAMPLES
Contents
CHAPTER
802.1Q VLAN User’s Guide
Contents
802.1Q VLAN User’s Guide
FIGURES
802.1Q VLAN User’s Guide
802.1Q VLAN User’s Guide
TABLES
802.1Q VLAN Configuration Menu Screen Menu Items
viii
STRUCTURE OF THIS GUIDE
USING THIS GUIDE
PREFACE
RELATED DOCUMENTS
DOCUMENT CONVENTIONS
CHAPTER VIRTUAL LOCAL AREA NETWORKS
1.1 DEFINING VLANs
Building One
Building Two
1.2.2 SecureFast VLANs
1.2 TYPES OF VLANs
1.2.1 802.1Q VLANs
1.2.3 Other VLAN Strategies
1.3 BENEFITS AND RESTRICTIONS
1.4 VLAN TERMS
A data frame that does not have a Tag Header
GARP VLAN Registration Protocol GVRP
1D Trunk
Generic Attribute Registration Protocol GARP
GARP Multicast Registration Protocol GMRP
1.5 GETTING HELP
Chapter 1 Virtual Local Area Networks
802.1Q VLAN User’s Guide
2.2 VLAN COMPONENTS
CHAPTER VLAN OPERATION
2.1 DESCRIPTION
2.3.2 Classifying Frames to a VLAN
2.3 CONFIGURATION PROCESS
2.3.1 Defining a VLAN
Chapter 2 VLAN Operation
2.4 VLAN SWITCH OPERATION
2.3.3 Customizing the VLAN Forwarding List
2.4.1 Receiving Frames from VLAN Ports
Untagged Frames
2.4.2.2 Known Unicasts
2.4.2 Forwarding Decisions
2.4.2.1 Broadcasts, Multicasts, and Unknown Unicasts
Tagged Frames
2.5 GARP SWITCH OPERATION
3.1.1 Switch Without VLANs
CHAPTER VLAN CONFIGURATION
3.1 MANAGING THE SWITCH
802.1Q Switch
3.1.2 Switch with VLANs
802.1Q Switch
2. Use the Port Assignment Configuration screen for the following
3.2 SUMMARY OF VLAN LOCAL MANAGEMENT
3.2.1 Preparing for VLAN Configuration
3.3 802.1Q VLAN CONFIGURATION MENU SCREEN
When to Use
Figure 3-4 802.1Q VLAN Configuration Menu Screen
How to Access
Screen Example
802.1Q VLAN User’s Guide
Menu Definitions
802.1Q VLAN Configuration Menu Screen
Table 3-1 802.1Q VLAN Configuration Menu Screen Menu Items
How to Access
3.4 DEVICE VLAN CONFIGURATION SCREEN
When to Use
Screen Example
802.1Q VLAN User’s Guide
Field Definitions
Device VLAN Configuration Screen
Table 3-2 Device VLAN Configuration Screen Field Definitions
3.4.1 Defining a VLAN
3.4.2 Changing the VLAN to FID Association
3.4.3 Renaming a VLAN
3.4.6 Disabling VLANs
3.4.4 Deleting a VLAN
3.4.5 Enabling VLANs
The default VLAN cannot be deleted from the list
The default VLAN cannot be disabled
3.4.7 Changing the Forwarding Mode
3.4.8 Paging Through the VLAN List
How to Access
3.5 PORT ASSIGNMENT CONFIGURATION SCREEN
When to Use
Screen Example
3.5.1 Changing the Port Mode
Field Definitions
3.5.2 Assigning a VLAN ID
When to Use
3.6 PORT FILTERING CONFIGURATION SCREEN
3.5.3 Paging Through the Port List
Chapter 3 VLAN Configuration
How to Access
Screen Example
3-18
3.6.1 Displaying VLAN IDs Associated with a Port
Field Definitions
3.6.2 Selecting the Type of Filtering for a Port
How to Access
3.7 VLAN FORWARDING CONFIGURATION SCREEN
When to Use
Screen Example
See the frame format Tagged or Untagged for the frames
3.7.1 Viewing Current VLAN Ports
Field Definitions
3.7.4 Deleting Forwarding List Entries
3.7.2 Paging Through VLAN Forwarding List Entries
3.7.3 Adding Forwarding List Entries
When to Use
3.8 PROTOCOL VLAN CONFIGURATION SCREEN
3.7.5 Changing the Frame Format
Protocol VLAN Configuration Screen
How to Access
Screen Example
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Field Definitions
Chapter 3 VLAN Configuration
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3-27
Protocol VLAN Configuration Screen
802.1Q VLAN User’s Guide
Table 3-6 Protocol VLAN Configuration Screen Field Definitions Cont’d
3.8.1 Displaying the Current Protocol, VLAN ID, and Port Assignments
3.8.2 Assigning a Protocol Family to a VLAN ID
TIP displayed in the Protocol field, press ENTER
Protocol VLAN Configuration Screen
To see if there are VLANs currently assigned to the Protocol
802.1Q VLAN User’s Guide
3.8.3 Displaying the Protocol Types on Current Ports
How to Access
3.9 PROTOCOL PORTS CONFIGURATION SCREEN
When to Use
Screen Example
3-32
Field Definitions
Chapter 3 VLAN Configuration
802.1Q VLAN User’s Guide
3.9.1 Adding/Deleting Ports Associated with a VLAN ID
3.10 QUICK VLAN WALKTHROUGH
6. Use the arrow keys to highlight the ADD/DEL field
It is now time to assign a port to this new VLAN
Figure 3-12 Walkthrough Stage Two
Figure 3-13 Walkthrough Stage Three
17. Press the SPACE bar to toggle the field to display Enabled
21. Use the arrow keys to highlight the Port field
802.1Q VLAN User’s Guide
Chapter 3 VLAN Configuration
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Figure 3-15 Final Walkthrough Stage
CHAPTER EXAMPLES
802.1Q Switch
4.1 EXAMPLE 1, SINGLE SWITCH OPERATION
R1 R2 R3
B3 B2 B1
4.1.1 Solving the Problem
802.1Q Switch
4.1.2 Frame Handling
4.2 EXAMPLE 2, VLANS ACROSS MULTIPLE SWITCHES
4.2.1 Solving the Problem
Figure 4-3 Example 2, VLANs Across Multiple Switches
Switch 4 is set as follows
Switch 2 is set as follows
4.2.2 Frame Handling
Figure 4-4 Bridge 1 Broadcasts Frames
Figure 4-5 Transmitting to Switch
4.3 EXAMPLE 3, 1D TRUNK CONNECTION TO 802.1Q VLAN NETWORK
Figure 4-6 Transmitting to Bridge
Green Incorporated
Figure 4-7 Example 3, 1D Trunk Connection to 802.1Q VLAN Network
User B
4.3.1 Solving the Problem
4.3.2 Frame Handling
Figure 4-8 Bridge 1 Broadcasts Frames
Figure 4-9 Switch 2 Forwards to 1Q Trunk
Figure 4-10 Switch 1 Forwards to 1D Trunk
Switch 1 checks the Filtering Database for the MAC address of User B. User B’s MAC address is located, and Port 2 is identified as User B’s location. The frame is then checked for eligibility and frame format for Port 2. Since Port 2 is a 1Q Trunk port, it is eligible to transmit frames for all VLANs. The frame is tagged and transmitted out Port
4.4 EXAMPLE 4, ISOLATING NETWORK TRAFFIC ACCORDING TO PROTOCOL
4.4.1 Solving the Problem
Figure 4-11 Example 4, Isolating Traffic According to Protocol
Switch 3 is set as follows
Switch 5 is set as follows
Port 2, VLAN ID 6, Protocol AppleTalk
802.1Q VLAN User’s Guide
Chapter 4 Examples
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INDEX
Numerics
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Index
Index-2
Index-3
Index
802.1Q VLAN User’s Guide
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Index
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