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Cabletron Systems manual 3.3 802.1Q VLAN CONFIGURATION MENU SCREEN, When to Use

Models: 802.1Q

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3.3802.1Q VLAN CONFIGURATION MENU SCREEN

802.1Q VLAN Conﬁguration Menu Screen

3.3802.1Q VLAN CONFIGURATION MENU SCREEN

When to Use

To select screens to assign switched network ports to VLANs, deﬁne new VLANs, and conﬁgure port ﬁltering according to a VLAN list or untagged frames. Network users can be logically grouped into VLANs even if they span long physical distances over a vast, intricate physical network. The VLAN Local Management menu items listed on the 802.1Q VLAN Conﬁguration Menu allow such VLANs to be conﬁgured on a network at the switched port of the device or SmartSwitch chassis. Also, some or all of the ports on the switch can be conﬁgured as GVRP ports, which enable frames received with a particular VLAN ID and protocol to be transmitted on a limited number of ports. This keeps the trafﬁc associated with a particular VLAN and protocol to be isolated from the other parts of the network.

Before attempting the VLAN conﬁguration, ensure that the device to be conﬁgured has been set for 802.1Q SWITCHING mode. The mode selection is a Local Management operation that is accessible through the General Conﬁguration screen of the device.

!

The device resets when changing operational modes.

CAUTION

802.1Q VLAN User’s Guide

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Cabletron Systems manual 3.3 802.1Q VLAN CONFIGURATION MENU SCREEN, When to Use

Contents

9032599-02 802.1Q VLAN User’s GuidePage 802.1Q VLAN User’s Guide 802.1Q VLAN User’s Guide VIRTUAL LOCAL AREA NETWORKS CONTENTSPREFACE CHAPTER802.1Q VLAN User’s Guide ContentsVLAN CONFIGURATION CHAPTER802.1Q VLAN User’s Guide ContentsCHAPTER EXAMPLES802.1Q VLAN User’s Guide Contents802.1Q VLAN User’s Guide FIGURESviii TABLES802.1Q VLAN Configuration Menu Screen Menu Items 802.1Q VLAN User’s GuidePREFACE USING THIS GUIDESTRUCTURE OF THIS GUIDE DOCUMENT CONVENTIONS RELATED DOCUMENTS1.1 DEFINING VLANs CHAPTER VIRTUAL LOCAL AREA NETWORKSBuilding Two Building One1.2.3 Other VLAN Strategies 1.2 TYPES OF VLANs1.2.1 802.1Q VLANs 1.2.2 SecureFast VLANs1.4 VLAN TERMS 1.3 BENEFITS AND RESTRICTIONSA data frame that does not have a Tag Header GARP Multicast Registration Protocol GMRP 1D TrunkGeneric Attribute Registration Protocol GARP GARP VLAN Registration Protocol GVRP1.5 GETTING HELP 802.1Q VLAN User’s Guide Chapter 1 Virtual Local Area Networks2.1 DESCRIPTION CHAPTER VLAN OPERATION2.2 VLAN COMPONENTS Chapter 2 VLAN Operation 2.3 CONFIGURATION PROCESS2.3.1 Deﬁning a VLAN 2.3.2 Classifying Frames to a VLAN2.3.3 Customizing the VLAN Forwarding List 2.4 VLAN SWITCH OPERATIONUntagged Frames 2.4.1 Receiving Frames from VLAN PortsTagged Frames 2.4.2 Forwarding Decisions2.4.2.1 Broadcasts, Multicasts, and Unknown Unicasts 2.4.2.2 Known Unicasts2.5 GARP SWITCH OPERATION 802.1Q Switch CHAPTER VLAN CONFIGURATION3.1 MANAGING THE SWITCH 3.1.1 Switch Without VLANs802.1Q 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 SCREENScreen Example How to AccessFigure 3-4 802.1Q VLAN Conﬁguration Menu Screen Table 3-1 802.1Q VLAN Conﬁguration Menu Screen Menu Items Menu Deﬁnitions802.1Q VLAN Conﬁguration Menu Screen 802.1Q VLAN User’s GuideScreen Example 3.4 DEVICE VLAN CONFIGURATION SCREENWhen to Use How to AccessTable 3-2 Device VLAN Conﬁguration Screen Field Deﬁnitions Field DeﬁnitionsDevice VLAN Conﬁguration Screen 802.1Q VLAN User’s Guide3.4.1 Deﬁning a VLAN 3.4.3 Renaming a VLAN 3.4.2 Changing the VLAN to FID AssociationThe default VLAN cannot be deleted from the list 3.4.4 Deleting a VLAN3.4.5 Enabling VLANs 3.4.6 Disabling VLANs3.4.8 Paging Through the VLAN List 3.4.7 Changing the Forwarding ModeThe default VLAN cannot be disabled Screen Example 3.5 PORT ASSIGNMENT CONFIGURATION SCREENWhen to Use How to AccessField Deﬁnitions 3.5.1 Changing the Port Mode3.5.2 Assigning a VLAN ID 3.5.3 Paging Through the Port List 3.6 PORT FILTERING CONFIGURATION SCREENWhen to Use 3-18 How to AccessScreen Example Chapter 3 VLAN ConﬁgurationField Deﬁnitions 3.6.1 Displaying VLAN IDs Associated with a Port3.6.2 Selecting the Type of Filtering for a Port Screen Example 3.7 VLAN FORWARDING CONFIGURATION SCREENWhen to Use How to AccessField Deﬁnitions 3.7.1 Viewing Current VLAN PortsSee the frame format Tagged or Untagged for the frames 3.7.3 Adding Forwarding List Entries 3.7.2 Paging Through VLAN Forwarding List Entries3.7.4 Deleting Forwarding List Entries 3.7.5 Changing the Frame Format 3.8 PROTOCOL VLAN CONFIGURATION SCREENWhen to Use 802.1Q VLAN User’s Guide How to AccessScreen Example Protocol VLAN Conﬁguration Screen802.1Q VLAN User’s Guide Field DeﬁnitionsChapter 3 VLAN Conﬁguration 3-26Table 3-6 Protocol VLAN Conﬁguration Screen Field Deﬁnitions Cont’d Protocol VLAN Conﬁguration Screen802.1Q VLAN User’s Guide 3-273.8.2 Assigning a Protocol Family to a VLAN ID 3.8.1 Displaying the Current Protocol, VLAN ID, and Port Assignments802.1Q VLAN User’s Guide Protocol VLAN Conﬁguration ScreenTo see if there are VLANs currently assigned to the Protocol TIP displayed in the Protocol ﬁeld, press ENTER3.8.3 Displaying the Protocol Types on Current Ports Screen Example 3.9 PROTOCOL PORTS CONFIGURATION SCREENWhen to Use How to Access802.1Q VLAN User’s Guide Field DeﬁnitionsChapter 3 VLAN Conﬁguration 3-323.10 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 Figure 3-15 Final Walkthrough Stage Chapter 3 VLAN Conﬁguration3-40 802.1Q VLAN User’s GuideR1 R2 R3 802.1Q Switch4.1 EXAMPLE 1, SINGLE SWITCH OPERATION CHAPTER EXAMPLES802.1Q Switch 4.1.1 Solving the ProblemB3 B2 B1 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 NETWORKUser B Figure 4-7 Example 3, 1D Trunk Connection to 802.1Q VLAN NetworkGreen Incorporated 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 4-22 Chapter 4 Examples802.1Q VLAN User’s Guide Numerics INDEXIndex-2 Index802.1Q VLAN User’s Guide 802.1Q VLAN User’s Guide IndexIndex-3 Index-4 Index802.1Q VLAN User’s Guide