Cabletron Systems 802.1Q manual Example 2, VLANs Across Multiple Switches

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Example 2, VLANs Across Multiple Switches

Redco

Blue Industries

	Bridge 1		2	Bridge 2
User A	Bridge 1		4 3	Bridge 2
	Red VLAN	1	4 3	Blue VLAN
			4

Floor 4

Floor 3
Blue Industries				Redco
File Server			2	Bridge 4	File Server
File Server	Bridge 3			Bridge 4	File Server
	Bridge 3		2 3
	Blue VLAN	1	2 3	Red VLAN
Floor 2

Floor 1

User

802.1D Legacy Bridge

802.1Q VLAN Aware Switch

File Server

22632_13

Figure 4-3 Example 2, VLANs Across Multiple Switches

4.2.1Solving the Problem

To solve the problem in this example, the users are assigned to VLANs using Switch 4 and Switch 2 as shown in Figure 4-3. Redco users are assigned to the Red VLAN and Blue Industries users to the Blue VLAN. The following information shows how Switch 4 and Switch 2 are conﬁgured to create the two VLANs to isolate the users of the two companies from one another on the network using the existing infrastructure.

802.1Q VLAN User’s Guide

4-5

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Contents 802.1Q Vlan User’s Guide Page 802.1Q Vlan User’s Guide 802.1Q Vlan User’s Guide Contents Contents Contents Contents 802.1Q Vlan User’s Guide Figures Tables Structure of this Guide Using this GuideDocument Conventions Related DocumentsDefining VLANs Chapter Virtual Local Area NetworksBuilding One Building Two Other Vlan Strategies Types of VLANs1 802.1Q VLANs SecureFast VLANsVlan Terms Benefits and RestrictionsData frame that does not have a Tag Header 1D Trunk Your email address Getting Help802.1Q Vlan User’s Guide Vlan Components DescriptionClassifying Frames to a Vlan Configuration Process1 Deﬁning a Vlan Customizing the Vlan Forwarding List Vlan Switch OperationReceiving Frames from Vlan Ports Inside the SwitchKnown Unicasts Forwarding DecisionsBroadcasts, Multicasts, and Unknown Unicasts Garp Switch Operation Switch Without VLANs Managing the SwitchSwitch Management with VLANs Switch with VLANsManaging the Switch Preparing for Vlan Conﬁguration Summary of Vlan Local ManagementWhen to Use 802.1Q Vlan Configuration Menu ScreenHow to Access Menu Deﬁnitions Device Vlan Conﬁguration Screen Device Vlan Configuration ScreenField Deﬁnitions 1 Deﬁning a Vlan Renaming a Vlan Changing the Vlan to FID AssociationDisabling VLANs Deleting a VlanEnabling VLANs Paging Through the Vlan List Changing the Forwarding ModePort Assignment Conﬁguration Screen Port Assignment Configuration ScreenPort Mode Changing the Port ModeAssigning a Vlan ID Paging Through the Port List Port Filtering Configuration ScreenPort Filtering Conﬁguration Screen Vlan Lists Displaying Vlan IDs Associated with a PortSelecting the Type of Filtering for a Port Vlan Forwarding Conﬁguration Screen Vlan Forwarding Configuration ScreenFrame Format Viewing Current Vlan PortsDeleting Forwarding List Entries Paging Through Vlan Forwarding List EntriesAdding Forwarding List Entries Changing the Frame Format Protocol Vlan Configuration ScreenProtocol Vlan Conﬁguration Screen Selectable Feature Status Ether type Assigning a Protocol Family to a Vlan IDProtocol Vlan Conﬁguration Screen Displaying the Protocol Types on Current Ports 10 Protocol Ports Conﬁguration Screen Protocol Ports Configuration ScreenDelete ALL Quick Vlan Walkthrough Adding/Deleting Ports Associated with a Vlan ID802.1Q Vlan User’s Guide Hybrid 12 Walkthrough Stage Two 13 Walkthrough Stage Three 14 Walkthrough Stage Four Quick Vlan Walkthrough 15 Final Walkthrough Stage Chapter Examples Example 1, Single Switch OperationSwitch Conﬁgured for VLANs Solving the ProblemFrame Handling Example 2, Vlans Across Multiple Switches Example 2, VLANs Across Multiple Switches Switch Example 2, VLANs Across Multiple Switches Bridge 1 Broadcasts Frames Transmitting to Switch Transmitting to Bridge Example 3, 1D Trunk Connection to 802.1Q Vlan NetworkExample 3, 1D Trunk Connection to 802.1Q Vlan Network Solving the Problem Frame Handling 226318 Switch 2 Forwards to 1Q Trunk Examples Example 4, Isolating Network Traffic According to Protocol 11 Example 4, Isolating Trafﬁc According to Protocol Switch Examples Example 4, Isolating Network Trafﬁc According to Protocol Examples 802.1Q Vlan User’s Guide Numerics IndexIndex-2 802.1Q Vlan User’s Guide 802.1Q Vlan User’s Guide Index-3 Index Index-4 802.1Q Vlan User’s Guide