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Cabletron Systems 802.1Q manual Assigning a VLAN ID

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3.5.2Assigning a VLAN ID

Chapter 3: VLAN Conﬁguration

•1Q TRUNK – This mode sets the port for transmitting to another 802.1Q aware device. In this mode, all frames are transmitted with a tag header included in the frame (excluding BPDUs). The switch will drop all untagged frames it receives on the 1Q Trunk port. The Port VLAN List for the port includes all VLANs.

•1D TRUNK – This mode sets the port for transmitting to a legacy 802.1D switch fabric. In this mode, all incoming frames are classiﬁed into the default VLAN and all frames are transmitted untagged. The switch expects to receive only untagged frames through the 1D Trunk port. This mode also updates the Port VLAN List and makes the port eligible to transmit frames for all VLANs. The 1D Trunk mode can be used in conjunction with the “Forward Default VLAN Out All Ports” parameter and the Default VLAN to allow all stations on a legacy portion of the network to access all stations or servers in the 802.1Q portion of the network.

3.When the desired operational mode for the port is displayed, use the arrow keys to highlight the SAVE command at the bottom of the screen.

4.Press ENTER. The message “SAVED OK” displays.

3.5.2Assigning a VLAN ID

The Port Assignment Conﬁguration screen also enables the user to set each port’s VLAN ID (PVID) by stepping through a list of all conﬁgured VLANs. To assign a VLAN ID to a port in this manner, perform the following steps:

NOTE

It may be necessary to use the NEXT and PREVIOUS commands to page through the available ports. For instructions, refer to Section 3.5.3.

1.Use the arrow keys to highlight the VLAN ID field for the port combination you wish to change.

2.Use the SPACE bar or BACKSPACE key to step sequentially through the previously configured VLAN ID numbers. Only existing VLAN IDs will be displayed.

3-16	802.1Q VLAN User’s Guide

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Cabletron Systems 802.1Q manual Assigning a VLAN ID

Contents

802.1Q VLAN User’s Guide 9032599-02Page 802.1Q VLAN User’s Guide 802.1Q VLAN User’s Guide CHAPTER CONTENTSPREFACE VIRTUAL LOCAL AREA NETWORKSCHAPTER ContentsVLAN CONFIGURATION 802.1Q VLAN User’s GuideEXAMPLES ContentsCHAPTER 802.1Q VLAN User’s GuideContents 802.1Q VLAN User’s GuideFIGURES 802.1Q VLAN User’s Guide802.1Q VLAN User’s Guide TABLES802.1Q VLAN Configuration Menu Screen Menu Items viiiUSING THIS GUIDE PREFACESTRUCTURE OF THIS GUIDE RELATED DOCUMENTS DOCUMENT CONVENTIONSCHAPTER VIRTUAL LOCAL AREA NETWORKS 1.1 DEFINING VLANsBuilding One Building Two1.2.2 SecureFast VLANs 1.2 TYPES OF VLANs1.2.1 802.1Q VLANs 1.2.3 Other VLAN Strategies1.3 BENEFITS AND RESTRICTIONS 1.4 VLAN TERMSA data frame that does not have a Tag Header GARP VLAN Registration Protocol GVRP 1D TrunkGeneric Attribute Registration Protocol GARP GARP Multicast Registration Protocol GMRP1.5 GETTING HELP Chapter 1 Virtual Local Area Networks 802.1Q VLAN User’s GuideCHAPTER VLAN OPERATION 2.1 DESCRIPTION2.2 VLAN COMPONENTS 2.3.2 Classifying Frames to a VLAN 2.3 CONFIGURATION PROCESS2.3.1 Deﬁning a VLAN Chapter 2 VLAN Operation2.4 VLAN SWITCH OPERATION 2.3.3 Customizing the VLAN Forwarding List2.4.1 Receiving Frames from VLAN Ports Untagged Frames2.4.2.2 Known Unicasts 2.4.2 Forwarding Decisions2.4.2.1 Broadcasts, Multicasts, and Unknown Unicasts Tagged Frames2.5 GARP SWITCH OPERATION 3.1.1 Switch Without VLANs CHAPTER VLAN CONFIGURATION3.1 MANAGING THE SWITCH 802.1Q Switch3.1.2 Switch with VLANs 802.1Q Switch2. Use the Port Assignment Configuration screen for the following 3.2 SUMMARY OF VLAN LOCAL MANAGEMENT 3.2.1 Preparing for VLAN Conﬁguration3.3 802.1Q VLAN CONFIGURATION MENU SCREEN When to UseHow to Access Screen ExampleFigure 3-4 802.1Q VLAN Conﬁguration Menu Screen 802.1Q VLAN User’s Guide Menu Deﬁnitions802.1Q VLAN Conﬁguration Menu Screen Table 3-1 802.1Q VLAN Conﬁguration Menu Screen Menu ItemsHow to Access 3.4 DEVICE VLAN CONFIGURATION SCREENWhen to Use Screen Example802.1Q VLAN User’s Guide Field DeﬁnitionsDevice VLAN Conﬁguration Screen Table 3-2 Device VLAN Conﬁguration Screen Field Deﬁnitions3.4.1 Deﬁning a VLAN 3.4.2 Changing the VLAN to FID Association 3.4.3 Renaming a VLAN3.4.6 Disabling VLANs 3.4.4 Deleting a VLAN3.4.5 Enabling VLANs The default VLAN cannot be deleted from the list3.4.7 Changing the Forwarding Mode 3.4.8 Paging Through the VLAN ListThe default VLAN cannot be disabled How to Access 3.5 PORT ASSIGNMENT CONFIGURATION SCREENWhen to Use Screen Example3.5.1 Changing the Port Mode Field Deﬁnitions3.5.2 Assigning a VLAN ID 3.6 PORT FILTERING CONFIGURATION SCREEN 3.5.3 Paging Through the Port ListWhen to Use Chapter 3 VLAN Conﬁguration How to AccessScreen Example 3-183.6.1 Displaying VLAN IDs Associated with a Port Field Deﬁnitions3.6.2 Selecting the Type of Filtering for a Port How to Access 3.7 VLAN FORWARDING CONFIGURATION SCREENWhen to Use Screen Example3.7.1 Viewing Current VLAN Ports Field DeﬁnitionsSee the frame format Tagged or Untagged for the frames 3.7.2 Paging Through VLAN Forwarding List Entries 3.7.3 Adding Forwarding List Entries3.7.4 Deleting Forwarding List Entries 3.8 PROTOCOL VLAN CONFIGURATION SCREEN 3.7.5 Changing the Frame FormatWhen to Use Protocol VLAN Conﬁguration Screen How to AccessScreen Example 802.1Q VLAN User’s Guide3-26 Field DeﬁnitionsChapter 3 VLAN Conﬁguration 802.1Q VLAN User’s Guide3-27 Protocol VLAN Conﬁguration Screen802.1Q VLAN User’s Guide Table 3-6 Protocol VLAN Conﬁguration Screen Field Deﬁnitions Cont’d3.8.1 Displaying the Current Protocol, VLAN ID, and Port Assignments 3.8.2 Assigning a Protocol Family to a VLAN IDTIP displayed in the Protocol ﬁeld, press ENTER Protocol VLAN Conﬁguration ScreenTo see if there are VLANs currently assigned to the Protocol 802.1Q VLAN User’s Guide3.8.3 Displaying the Protocol Types on Current Ports How to Access 3.9 PROTOCOL PORTS CONFIGURATION SCREENWhen to Use Screen Example3-32 Field DeﬁnitionsChapter 3 VLAN Conﬁguration 802.1Q VLAN User’s Guide3.9.1 Adding/Deleting Ports Associated with a VLAN ID 3.10 QUICK VLAN WALKTHROUGH6. 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 Conﬁguration3-40 Figure 3-15 Final Walkthrough StageCHAPTER EXAMPLES 802.1Q Switch4.1 EXAMPLE 1, SINGLE SWITCH OPERATION R1 R2 R34.1.1 Solving the Problem 802.1Q SwitchB3 B2 B1 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 SwitchesSwitch 4 is set as follows Switch 2 is set as follows 4.2.2 Frame Handling Figure 4-4 Bridge 1 Broadcasts FramesFigure 4-5 Transmitting to Switch 4.3 EXAMPLE 3, 1D TRUNK CONNECTION TO 802.1Q VLAN NETWORK Figure 4-6 Transmitting to BridgeFigure 4-7 Example 3, 1D Trunk Connection to 802.1Q VLAN Network User BGreen Incorporated 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 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 4.4.1 Solving the Problem Figure 4-11 Example 4, Isolating Trafﬁc According to ProtocolSwitch 3 is set as follows Switch 5 is set as follows Port 2, VLAN ID 6, Protocol AppleTalk Chapter 4 Examples 4-22802.1Q VLAN User’s Guide INDEX NumericsIndex Index-2802.1Q VLAN User’s Guide Index 802.1Q VLAN User’s GuideIndex-3 Index Index-4802.1Q VLAN User’s Guide