Cabletron Systems manual Example 3, 1D Trunk Connection to 802.1Q Vlan Network

Page 76

Chapter 4: Examples

Floor 3

Blue Industries		Redco
		2	File Server
Bridge 3		Bridge 4	File Server
Bridge 3	2	3
1	2	3
Blue VLAN		Red VLAN
Floor 2
			2263_16

Figure 4-6 Transmitting to Bridge 4

4.The File Server responds with a unicast frame to User A. All switches between the File Server and User A have an entry in their respective Source Address Tables identifying which port to use for forwarding the frame to User A, MAC address “Y” in FID 3. All switches update their Source Address Tables for the File Server’s MAC address “Z” as the frame is forwarded through the switch fabric to User A. The 802.1D switches update their Source Address Tables based on the source MAC address and receive port and the 802.1Q switches update their databases based on the source MAC address, VLAN, and receive port.

5.The frame from the File Server is received on Switch 2, and forwarded to Switch 1 as a tagged frame classified as belonging to the Red VLAN. Switch 1 removes the tag and forwards the frame to Bridge 1, which in turn forwards the frame out of the port attached to User A. All subsequent frames between User A and the File Server are forwarded through the switch fabric in the same manner.

4.3EXAMPLE 3, 1D TRUNK CONNECTION TO 802.1Q VLAN NETWORK

This example illustrates the use of a 1D Trunk to connect a device to a network of 802.1Q VLAN switches.

In this example, a merger has taken place between the companies in the previous example, Redco and Blue Industries. The two companies have become divisions within a single corporation, Green Incorporated.

4-10	802.1Q VLAN User’s Guide

Image 76

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 Using this Guide Structure of this GuideRelated Documents Document ConventionsChapter Virtual Local Area Networks Defining VLANsBuilding One Building Two Types of VLANs 1 802.1Q VLANsSecureFast VLANs Other Vlan StrategiesBenefits and Restrictions Vlan TermsData frame that does not have a Tag Header 1D Trunk Getting Help Your email address802.1Q Vlan User’s Guide Description Vlan Components1 Deﬁning a Vlan Configuration ProcessClassifying Frames to a Vlan Vlan Switch Operation Customizing the Vlan Forwarding ListInside the Switch Receiving Frames from Vlan PortsBroadcasts, Multicasts, and Unknown Unicasts Forwarding DecisionsKnown Unicasts Garp Switch Operation Managing the Switch Switch Without VLANsSwitch with VLANs Switch Management with VLANsManaging the Switch Summary of Vlan Local Management Preparing for Vlan Conﬁguration802.1Q Vlan Configuration Menu Screen When to UseHow to Access Menu Deﬁnitions Device Vlan Configuration Screen Device Vlan Conﬁguration ScreenField Deﬁnitions 1 Deﬁning a Vlan Changing the Vlan to FID Association Renaming a VlanEnabling VLANs Deleting a VlanDisabling VLANs Changing the Forwarding Mode Paging Through the Vlan ListPort Assignment Configuration Screen Port Assignment Conﬁguration ScreenChanging the Port Mode Port ModeAssigning a Vlan ID Port Filtering Configuration Screen Paging Through the Port ListPort Filtering Conﬁguration Screen Displaying Vlan IDs Associated with a Port Vlan ListsSelecting the Type of Filtering for a Port Vlan Forwarding Configuration Screen Vlan Forwarding Conﬁguration ScreenViewing Current Vlan Ports Frame FormatAdding Forwarding List Entries Paging Through Vlan Forwarding List EntriesDeleting Forwarding List Entries Protocol Vlan Configuration Screen Changing the Frame FormatProtocol Vlan Conﬁguration Screen Selectable Feature Status Assigning a Protocol Family to a Vlan ID Ether typeProtocol Vlan Conﬁguration Screen Displaying the Protocol Types on Current Ports Protocol Ports Configuration Screen 10 Protocol Ports Conﬁguration ScreenDelete ALL Adding/Deleting Ports Associated with a Vlan ID Quick Vlan Walkthrough802.1Q Vlan User’s Guide Hybrid 12 Walkthrough Stage Two 13 Walkthrough Stage Three 14 Walkthrough Stage Four Quick Vlan Walkthrough 15 Final Walkthrough Stage Example 1, Single Switch Operation Chapter ExamplesSolving the Problem Switch Conﬁgured for VLANsFrame 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 Example 3, 1D Trunk Connection to 802.1Q Vlan Network Transmitting to BridgeExample 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 Index NumericsIndex-2 802.1Q Vlan User’s Guide 802.1Q Vlan User’s Guide Index-3 Index Index-4 802.1Q Vlan User’s Guide