802.1Q VLAN User’s Guide
9032599-02
Page
802.1Q VLAN User’s Guide
802.1Q VLAN User’s Guide
CONTENTS
PREFACE
CHAPTER
VIRTUAL LOCAL AREA NETWORKS
Contents
VLAN CONFIGURATION
CHAPTER
802.1Q VLAN User’s Guide
Contents
CHAPTER
EXAMPLES
802.1Q VLAN User’s Guide
Contents
802.1Q VLAN User’s Guide
FIGURES
802.1Q VLAN User’s Guide
TABLES
802.1Q VLAN Configuration Menu Screen Menu Items
802.1Q VLAN User’s Guide
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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 TYPES OF VLANs
1.2.1 802.1Q VLANs
1.2.2 SecureFast 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
1D Trunk
Generic Attribute Registration Protocol GARP
GARP VLAN Registration Protocol GVRP
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 CONFIGURATION PROCESS
2.3.1 Defining a VLAN
2.3.2 Classifying Frames to 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 Forwarding Decisions
2.4.2.1 Broadcasts, Multicasts, and Unknown Unicasts
2.4.2.2 Known Unicasts
Tagged Frames
2.5 GARP SWITCH OPERATION
CHAPTER VLAN CONFIGURATION
3.1 MANAGING THE SWITCH
3.1.1 Switch Without VLANs
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
Menu Definitions
802.1Q VLAN Configuration Menu Screen
802.1Q VLAN User’s Guide
Table 3-1 802.1Q VLAN Configuration Menu Screen Menu Items
3.4 DEVICE VLAN CONFIGURATION SCREEN
When to Use
How to Access
Screen Example
Field Definitions
Device VLAN Configuration Screen
802.1Q VLAN User’s Guide
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
3.4.4 Deleting a VLAN
3.4.5 Enabling VLANs
3.4.6 Disabling 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
3.5 PORT ASSIGNMENT CONFIGURATION SCREEN
When to Use
How to Access
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
How to Access
Screen Example
Chapter 3 VLAN Configuration
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
3.7 VLAN FORWARDING CONFIGURATION SCREEN
When to Use
How to Access
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
How to Access
Screen Example
Protocol VLAN Configuration Screen
802.1Q VLAN User’s Guide
Field Definitions
Chapter 3 VLAN Configuration
3-26
802.1Q VLAN User’s Guide
Protocol VLAN Configuration Screen
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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
Protocol VLAN Configuration Screen
To see if there are VLANs currently assigned to the Protocol
TIP displayed in the Protocol field, press ENTER
802.1Q VLAN User’s Guide
3.8.3 Displaying the Protocol Types on Current Ports
3.9 PROTOCOL PORTS CONFIGURATION SCREEN
When to Use
How to Access
Screen Example
Field Definitions
Chapter 3 VLAN Configuration
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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
Chapter 3 VLAN Configuration
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802.1Q VLAN User’s Guide
Figure 3-15 Final Walkthrough Stage
802.1Q Switch
4.1 EXAMPLE 1, SINGLE SWITCH OPERATION
CHAPTER EXAMPLES
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
802.1Q VLAN User’s Guide
Index
Index-2
Index-3
Index
802.1Q VLAN User’s Guide
802.1Q VLAN User’s Guide
Index
Index-4
