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Cabletron Systems 802.1Q manual Use the arrow keys to highlight the Port field

Models: 802.1Q

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Quick VLAN Walkthrough

The Port VLAN List of any port on the device can also be checked at any time using the Port Filtering Conﬁguration screen. A list of all ports eligible to transmit frames for a given VLAN will also be listed on the VLAN Forwarding Conﬁguration screen. Each port can also be set to ﬁlter out (drop) incoming frames that have VLAN tags that do not match with any of those in its Port VLAN List, and also ﬁlter out all untagged frames received by the port. As a default neither function is activated.

In this walkthrough, we will show how to display the Port VLAN List of port 10 and set the port to ﬁlter out all untagged frames that it receives.

20.On the 802.1Q VLAN Main Menu screen, use the arrow keys to highlight the PORT FILTERING CONFIGURATION menu item. Press ENTER. The Port Filtering Configuration screen displays.

21.Use the arrow keys to highlight the Port field.

22.Press the SPACE bar to step the field to display 2.

23.Use the arrow keys to highlight the Filter All Untagged Frames field.

24.Press the SPACE bar to toggle the field to display YES.

25.Use the arrow keys to highlight the SAVE command at the bottom of the screen.

26.Press ENTER. The message “SAVED OK” displays. The Port Filtering Configuration screen displays the Port VLAN List for port 2 and the Filtering All Untagged Names field is set to YES as shown in Figure 3-15.

802.1Q VLAN User’s Guide

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Cabletron Systems 802.1Q manual Use the arrow keys to highlight the Port field

Contents

9032599-02 802.1Q VLAN User’s GuidePage 802.1Q VLAN User’s Guide 802.1Q VLAN User’s Guide PREFACE CONTENTSCHAPTER VIRTUAL LOCAL AREA NETWORKSVLAN CONFIGURATION ContentsCHAPTER 802.1Q VLAN User’s GuideCHAPTER ContentsEXAMPLES 802.1Q VLAN User’s Guide802.1Q VLAN User’s Guide Contents802.1Q VLAN User’s Guide FIGURES802.1Q VLAN Configuration Menu Screen Menu Items TABLES802.1Q VLAN User’s Guide viiiSTRUCTURE OF THIS GUIDE USING THIS GUIDEPREFACE DOCUMENT CONVENTIONS RELATED DOCUMENTS1.1 DEFINING VLANs CHAPTER VIRTUAL LOCAL AREA NETWORKSBuilding Two Building One1.2.1 802.1Q VLANs 1.2 TYPES OF VLANs1.2.2 SecureFast VLANs 1.2.3 Other VLAN Strategies1.4 VLAN TERMS 1.3 BENEFITS AND RESTRICTIONSA data frame that does not have a Tag Header Generic Attribute Registration Protocol GARP 1D TrunkGARP VLAN Registration Protocol GVRP GARP Multicast Registration Protocol GMRP1.5 GETTING HELP 802.1Q VLAN User’s Guide Chapter 1 Virtual Local Area Networks2.2 VLAN COMPONENTS CHAPTER VLAN OPERATION2.1 DESCRIPTION 2.3.1 Deﬁning a VLAN 2.3 CONFIGURATION PROCESS2.3.2 Classifying Frames to a VLAN Chapter 2 VLAN Operation2.3.3 Customizing the VLAN Forwarding List 2.4 VLAN SWITCH OPERATIONUntagged Frames 2.4.1 Receiving Frames from VLAN Ports2.4.2.1 Broadcasts, Multicasts, and Unknown Unicasts 2.4.2 Forwarding Decisions2.4.2.2 Known Unicasts Tagged Frames2.5 GARP SWITCH OPERATION 3.1 MANAGING THE SWITCH CHAPTER VLAN CONFIGURATION3.1.1 Switch Without VLANs 802.1Q Switch802.1Q Switch 3.1.2 Switch with VLANs2. Use the Port Assignment Configuration screen for the following 3.2.1 Preparing for VLAN Conﬁguration 3.2 SUMMARY OF VLAN LOCAL MANAGEMENTWhen to Use 3.3 802.1Q VLAN CONFIGURATION MENU SCREENFigure 3-4 802.1Q VLAN Conﬁguration Menu Screen How to AccessScreen Example 802.1Q VLAN Conﬁguration Menu Screen Menu Deﬁnitions802.1Q VLAN User’s Guide Table 3-1 802.1Q VLAN Conﬁguration Menu Screen Menu ItemsWhen to Use 3.4 DEVICE VLAN CONFIGURATION SCREENHow to Access Screen ExampleDevice VLAN Conﬁguration Screen Field Deﬁnitions802.1Q VLAN User’s Guide Table 3-2 Device VLAN Conﬁguration Screen Field Deﬁnitions3.4.1 Deﬁning a VLAN 3.4.3 Renaming a VLAN 3.4.2 Changing the VLAN to FID Association3.4.5 Enabling VLANs 3.4.4 Deleting a VLAN3.4.6 Disabling VLANs The default VLAN cannot be deleted from the listThe default VLAN cannot be disabled 3.4.7 Changing the Forwarding Mode3.4.8 Paging Through the VLAN List When to Use 3.5 PORT ASSIGNMENT CONFIGURATION SCREENHow to Access Screen ExampleField Deﬁnitions 3.5.1 Changing the Port Mode3.5.2 Assigning a VLAN ID When to Use 3.6 PORT FILTERING CONFIGURATION SCREEN3.5.3 Paging Through the Port List Screen Example How to AccessChapter 3 VLAN Conﬁguration 3-18Field Deﬁnitions 3.6.1 Displaying VLAN IDs Associated with a Port3.6.2 Selecting the Type of Filtering for a Port When to Use 3.7 VLAN FORWARDING CONFIGURATION SCREENHow to Access Screen ExampleSee the frame format Tagged or Untagged for the frames 3.7.1 Viewing Current VLAN PortsField Deﬁnitions 3.7.4 Deleting Forwarding List Entries 3.7.2 Paging Through VLAN Forwarding List Entries3.7.3 Adding Forwarding List Entries When to Use 3.8 PROTOCOL VLAN CONFIGURATION SCREEN3.7.5 Changing the Frame Format Screen Example How to AccessProtocol VLAN Conﬁguration Screen 802.1Q VLAN User’s GuideChapter 3 VLAN Conﬁguration Field Deﬁnitions3-26 802.1Q VLAN User’s Guide802.1Q VLAN User’s Guide Protocol VLAN Conﬁguration Screen3-27 Table 3-6 Protocol VLAN Conﬁguration Screen Field Deﬁnitions Cont’d3.8.2 Assigning a Protocol Family to a VLAN ID 3.8.1 Displaying the Current Protocol, VLAN ID, and Port AssignmentsTo see if there are VLANs currently assigned to the Protocol Protocol VLAN Conﬁguration ScreenTIP displayed in the Protocol ﬁeld, press ENTER 802.1Q VLAN User’s Guide3.8.3 Displaying the Protocol Types on Current Ports When to Use 3.9 PROTOCOL PORTS CONFIGURATION SCREENHow to Access Screen ExampleChapter 3 VLAN Conﬁguration Field Deﬁnitions3-32 802.1Q VLAN User’s Guide3.10 QUICK VLAN WALKTHROUGH 3.9.1 Adding/Deleting Ports Associated with a VLAN ID6. 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 3-40 Chapter 3 VLAN Conﬁguration802.1Q VLAN User’s Guide Figure 3-15 Final Walkthrough Stage4.1 EXAMPLE 1, SINGLE SWITCH OPERATION 802.1Q SwitchCHAPTER EXAMPLES R1 R2 R3B3 B2 B1 4.1.1 Solving the Problem802.1Q Switch 4.1.2 Frame Handling 4.2 EXAMPLE 2, VLANS ACROSS MULTIPLE SWITCHES Figure 4-3 Example 2, VLANs Across Multiple Switches 4.2.1 Solving the ProblemSwitch 4 is set as follows Switch 2 is set as follows Figure 4-4 Bridge 1 Broadcasts Frames 4.2.2 Frame HandlingFigure 4-5 Transmitting to Switch Figure 4-6 Transmitting to Bridge 4.3 EXAMPLE 3, 1D TRUNK CONNECTION TO 802.1Q VLAN NETWORKGreen Incorporated Figure 4-7 Example 3, 1D Trunk Connection to 802.1Q VLAN NetworkUser B 4.3.1 Solving the Problem 4.3.2 Frame Handling Figure 4-8 Bridge 1 Broadcasts Frames Figure 4-10 Switch 1 Forwards to 1D Trunk Figure 4-9 Switch 2 Forwards to 1Q TrunkSwitch 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 Figure 4-11 Example 4, Isolating Trafﬁc According to Protocol 4.4.1 Solving the ProblemSwitch 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 Examples4-22 Numerics INDEX802.1Q VLAN User’s Guide IndexIndex-2 Index-3 Index802.1Q VLAN User’s Guide 802.1Q VLAN User’s Guide IndexIndex-4