Page 3 - NOTICE; Printed in the United States of America.
NOTICE Enterasys Networks reserves the right to make changes in specifications and other information contained in this document and its web site without prior notice. The reader should in all cases consult Enterasys Networks to determine whether any such changes have been made. The hardware, firmwar...
Page 5 - Contents; PREFACE
Contents iii Contents Figures ............................................................................................................................................ vTables.............................................................................................................................
Page 7 - Figures
Figures v Figure Page Figures 1-1 Example of a VLAN ......................................................................................................... 1-2 2-1 Inside the Switch ............................................................................................................. 2-3 3-...
Page 8 - Tables
vi Table Page Tables 3-1 802.1Q VLAN Configuration Menu Screen Menu Items ...............................................3-6 3-2 Device VLAN Configuration Screen Field Definitions ...................................................3-9 3-3 Port Assignment Configuration Screen Field Definitions .........
Page 9 - Preface; USING THIS GUIDE; Chapter 1; STRUCTURE OF THIS GUIDE; Virtual Local Area Networks; IMPORTANT NOTICE
Preface vii Preface Welcome to the Enterasys Networks 802.1Q VLAN User’s Guide . This guide introduces and describes Enterasys Networks’ implementation of the IEEE 802.1Q standard for 802.1Q Virtual Local Area Network (VLAN) technology, and the VLAN Local Management screens used to configure Enteras...
Page 10 - VLAN Configuration; RELATED DOCUMENTS; Bold type; Italic type; Note
Related Documents viii Preface Chapter 3, VLAN Configuration , describes how to set up the switch for local and remote management, shows the Local Management screens used in 802.1Q VLAN configuration and explains their use. Chapter 4, Examples , offers examples of 802.1Q VLANs and explains how netwo...
Page 11 - DEFINING VLANs
Virtual Local Area Networks 1-1 1 Virtual Local Area Networks This chapter introduces the concepts of Virtual Local Area Networks (VLANs) and discusses the central concepts of IEEE 802.1Q VLANs. This chapter also contains information on how to contact Enterasys Networks for additional support relate...
Page 12 - Example of a VLAN; TYPES OF VLANs; Building One; trunk
Types of VLANs 1-2 Virtual Local Area Networks Figure 1-1 Example of a VLAN In this example, the Sales and Finance workstations have been placed on two separate VLANs. In a plain Ethernet environment, the entire network is a broadcast domain, and the SmartSwitches follow the IEEE 802.1D bridging spe...
Page 13 - SecureFast VLANs
Benefits and Restrictions Virtual Local Area Networks 1-3 1.2.1 802.1Q VLANs An 802.1Q VLAN switch determines the VLAN membership of a data frame by its Tag Header, described later in this chapter. If the frame received is not tagged, the switch classifies the frame into the VLAN that is assigned as...
Page 14 - VLAN TERMS; A data frame that does not have a Tag Header.
VLAN Terms 1-4 Virtual Local Area Networks 1.4 VLAN TERMS To fully understand the operation and configuration of port based VLANs, it is essential to understand the definitions of several key terms. VLAN ID A unique number (between 1 and 4094) that identifies a particular VLAN. VLAN Name A 32-charac...
Page 16 - GETTING HELP; anonymous
Getting Help 1-6 Virtual Local Area Networks 1.5 GETTING HELP For additional support related to this document, contact Enterasys Networks using one of the following methods: Before contacting Enterasys Networks for technical support, have the following information ready: • Your Enterasys Networks se...
Page 17 - VLAN Operation; DESCRIPTION; Stations
VLAN Operation 2-1 2 VLAN Operation This chapter describes the operation of a VLAN switch and discusses the operations that a VLAN switch performs in response to both normal and VLAN-originated network traffic. 2.1 DESCRIPTION The 802.1Q VLAN operation is slightly different than the operation of tra...
Page 18 - CONFIGURATION PROCESS; presented in; .This brief section describes the actions
Configuration Process 2-2 VLAN Operation 2.3 CONFIGURATION PROCESS Before a VLAN can operate, steps must be performed to configure the switch to establish and configure a VLAN. Enterasys Networks VLAN aware SmartSwitches default to operate in the 802.1Q VLAN mode. However, further configuration is n...
Page 19 - VLAN SWITCH OPERATION; of; Inside the Switch; Default
VLAN Switch Operation VLAN Operation 2-3 2.4 VLAN SWITCH OPERATION IEEE 802.1Q VLAN switches act on the classification of frames into VLANs. Sometimes, VLAN classification is based on tags in the headers of data frames. These VLAN tags are added to data frames by the switch as the frames are transmi...
Page 20 - Receiving Frames from VLAN Ports; Untagged Frames; Forwarding Decisions; VLAN C in their Port VLAN List.
VLAN Switch Operation 2-4 VLAN Operation 2.4.1 Receiving Frames from VLAN Ports When a switch is placed in 802.1Q Operational Mode, every frame received by the switch must belong, or be assigned, to a VLAN. Untagged Frames The switch receives a frame from Port 1 and examines the frame. The switch no...
Page 21 - Known Unicasts
GARP Switch Operation VLAN Operation 2-5 2.4.2.2 Known Unicasts When a VLAN switch receives a frame with a known MAC address as its destination address, the action taken by the switch to determine how the frame is transmitted depends on the VLAN, the VLAN associated FID, and if the port identified t...
Page 23 - MANAGING THE SWITCH
VLAN Configuration 3-1 3 VLAN Configuration This chapter describes how to set up the switch for local or remote management, and the VLAN Local Management screens used to create and configure VLANs in a SmartSwitch. 3.1 MANAGING THE SWITCH The switch may be managed locally via a terminal connected to...
Page 24 - Switch Management with Only Default VLAN; Switch with VLANs; members of the default VLAN. Therefore, any station
Managing the Switch 3-2 VLAN Configuration Figure 3-1 Switch Management with Only Default VLAN 3.1.2 Switch with VLANs If the switch is to be configured for multiple VLANs, it may be desirable to configure a management-only VLAN. This allows a management station connected to the management VLAN to m...
Page 25 - Switch Management with VLANs; To set up the switch shown in
Managing the Switch VLAN Configuration 3-3 Figure 3-2 Switch Management with VLANs To set up the switch shown in Figure 3-2 to establish a management VLAN on port 1, use the process described below: 1. Use the Device VLAN Configuration screen for the following: a. Define a new VLAN named “Management...
Page 26 - SUMMARY OF VLAN LOCAL MANAGEMENT; Q VLAN Screen Hierarchy
Summary of VLAN Local Management 3-4 VLAN Configuration This process would be repeated on every switch that is connected in the network to ensure that each switch has a secure Management VLAN for switch management. If the switch was connected to another switch via port 7, which was set as a 1Q Trunk...
Page 27 - Preparing for VLAN Configuration; How many VLANs will be required; Q VLAN CONFIGURATION MENU SCREEN; The device resets when changing operational modes.
802.1Q VLAN Configuration Menu Screen VLAN Configuration 3-5 Preparing for VLAN Configuration A little forethought and planning is essential to a good VLAN implementation. Before attempting to configure a single switch for VLAN operation, consider the following: • How many VLANs will be required • W...
Page 28 - How to Access; Use the arrow keys to highlight the; Q VLAN CONFIGURATION MENU; item from the; Screen Example; Q VLAN Configuration Menu Screen; Menu Definitions; Q VLAN Configuration Menu Screen Menu Items; for additional
802.1Q VLAN Configuration Menu Screen 3-6 VLAN Configuration How to Access Use the arrow keys to highlight the 802.1Q VLAN CONFIGURATION MENU item from the module, device, or chassis specific Configuration Menu screen and press ENTER. The 802.1Q VLAN Configuration Menu screen displays. Screen Exampl...
Page 29 - DEVICE VLAN CONFIGURATION SCREEN; DEVICE VLAN CONFIGURATION; Menu Item
Device VLAN Configuration Screen VLAN Configuration 3-7 3.4 DEVICE VLAN CONFIGURATION SCREEN When to Use To define the operating characteristics of the switch to add, name, delete, enable, and disable VLANs, and assign VLANs to FIDs. The screen can display up to eight VLANs simultaneously. How to Ac...
Page 30 - Device VLAN Configuration Screen
Device VLAN Configuration Screen 3-8 VLAN Configuration Screen Example Figure 3-5 Device VLAN Configuration Screen Firmware Revision: XX.XX.XX Device VLAN Configuration 25993-05 Module Type: xxxxx-xx BOOTPROM Revision: XX.XX.XX 6C105 LOCAL MANAGEMENT Slot Number: xx RETURN EXIT Forward Default VLAN ...
Page 31 - Field Definitions; Device VLAN Configuration Screen Field Definitions; upper part of; Admin Status
Device VLAN Configuration Screen VLAN Configuration 3-9 Field Definitions Table 3-2 Device VLAN Configuration Screen Field Definitions Use this field … To … Forward Default VLAN Out All Ports (Toggle) Assign or remove the default VLAN from the Port VLAN List for all ports. When set to YES, the defau...
Page 32 - Defining a VLAN; VLAN ID; field. If the VLAN is not going to be assigned to a different FID, go to; VLAN Name; lower part of; Use this field ...
Device VLAN Configuration Screen 3-10 VLAN Configuration 3.4.1 Defining a VLAN To define a VLAN, proceed as follows: 1. Use the arrow keys to highlight the VLAN ID field. 2. Enter the VLAN ID using a unique number between 2 and 4094. The VLAN IDs of 0, 1, and 4095 may not be used for user-defined VL...
Page 33 - Changing the VLAN to FID Association
Device VLAN Configuration Screen VLAN Configuration 3-11 6. Type a name of up to 32 ASCII characters in the VLAN Name field . This is an optional attribute of a VLAN, and is not required for VLAN operation. 7. Use the arrow keys to highlight the ADD/DEL field. 8. Press the SPACE bar to select ADD fo...
Page 34 - Deleting a VLAN; The default VLAN cannot be deleted from the list.
Device VLAN Configuration Screen 3-12 VLAN Configuration 4. Use the arrow keys to highlight the SAVE command at the bottom of the screen. Press ENTER. The message “SAVED OK” displays. 3.4.4 Deleting a VLAN To delete a VLAN from the current VLAN list, proceed as follows: 1. Enter the VLAN ID. The VLA...
Page 35 - Changing the Forwarding Mode; The default VLAN cannot be disabled.
Device VLAN Configuration Screen VLAN Configuration 3-13 3. Use the arrow keys to highlight the SAVE command at the bottom of the screen. 4. Press ENTER. The message “SAVED OK” displays. 3.4.7 Changing the Forwarding Mode To change the forwarding mode of the switch, proceed as follows: 1. Use the ar...
Page 36 - PORT ASSIGNMENT CONFIGURATION SCREEN; PORT ASSIGNMENT CONFIGURATION; menu item on; Port Assignment Configuration Screen
Port Assignment Configuration Screen 3-14 VLAN Configuration 3.5 PORT ASSIGNMENT CONFIGURATION SCREEN When to Use To select a mode of operation for each port and to assign a Port VLAN Identification (PVID) to each port. How to Access Use the arrow keys to highlight the PORT ASSIGNMENT CONFIGURATION ...
Page 37 - To change the operational mode of a port, proceed as follows.; Port Assignment Configuration Screen Field Definitions; See the port numbers of the interfaces of the current module.
Port Assignment Configuration Screen VLAN Configuration 3-15 Field Definitions 3.5.1 Changing the Port Mode To change the operational mode of a port, proceed as follows. 1. Use the arrow keys to highlight the PORT MODE field for the module and port combination you wish to change. 2. Use the SPACE ba...
Page 38 - D TRUNK –; Assigning a VLAN ID; It may be necessary to use the NEXT and PREVIOUS commands to page
Port Assignment Configuration Screen 3-16 VLAN Configuration • 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 unta...
Page 39 - Paging Through the Port List; NEXT; PORT FILTERING CONFIGURATION SCREEN; PORT FILTERING CONFIGURATION; entries to page through.
Port Filtering Configuration Screen VLAN Configuration 3-17 3.5.3 Paging Through the Port List To display additional ports that do not display in the current screen, use the NEXT or PREVIOUS commands at the bottom of the screen, as follows: 1. To display the next screen, use the arrow keys to highli...
Page 40 - Port Filtering Configuration Screen; Port Filtering Configuration Screen Field Definitions
Port Filtering Configuration Screen 3-18 VLAN Configuration Screen Example Figure 3-7 Port Filtering Configuration Screen Field Definitions Table 3-4 Port Filtering Configuration Screen Field Definitions Use this field … To … VLAN ID (Read-Only) See the VLAN ID of the VLANs that are configured to ha...
Page 41 - Displaying VLAN IDs Associated with a Port; Port; the list to page through.
Port Filtering Configuration Screen VLAN Configuration 3-19 3.6.1 Displaying VLAN IDs Associated with a Port To display the VLAN IDs and VLAN Names of the VLANs associated with a particular port, proceed as follows: 1. Use the arrow keys to highlight the Port field. 2. Use the SPACE bar or BACKSPACE...
Page 42 - Selecting the Type of Filtering for a Port
VLAN Forwarding Configuration Screen 3-20 VLAN Configuration 3.6.2 Selecting the Type of Filtering for a Port A port can be set to filter out received frames according to its Port VLAN List. This keeps them from being transmitted and drops all untagged frames from being transmitted. To set this type...
Page 43 - VLAN Forwarding Configuration Screen; VLAN Forwarding Configuration Screen Field Definitions; Current VLAN Ports; See the MIB2 interface description for the selected switch port.; Frame Format
VLAN Forwarding Configuration Screen VLAN Configuration 3-21 Screen Example Figure 3-8 VLAN Forwarding Configuration Screen Field Definitions Table 3-5 VLAN Forwarding Configuration Screen Field Definitions Use this field … To … Current VLAN Ports (Read-Only) See the ports that are currently configu...
Page 44 - Viewing Current VLAN Ports
VLAN Forwarding Configuration Screen 3-22 VLAN Configuration 3.7.1 Viewing Current VLAN Ports To display the VLAN Forwarding List for a particular VLAN, proceed as follows: 1. Use the arrow keys to highlight the VLAN ID field. Use the SPACE bar or BACKSPACE to step to the desired VLAN ID and VLAN Na...
Page 45 - Deleting Forwarding List Entries
VLAN Forwarding Configuration Screen VLAN Configuration 3-23 2. Use the arrow keys to highlight the Port field. Step through the available ports on the module with the SPACE bar or BACKSPACE. 3. Use the arrow keys to highlight the ADD/DELETE field. Press the SPACE bar to select ADD or DELETE. Press ...
Page 46 - PROTOCOL VLAN CONFIGURATION SCREEN; PROTOCOL VLAN CONFIGURATION; menu item on the; Protocol VLAN Configuration Screen
Protocol VLAN Configuration Screen 3-24 VLAN Configuration 3.8 PROTOCOL VLAN CONFIGURATION SCREEN When to Use To assign a protocol to a VLAN ID on one or more ports on the switch. This enables the switch to add a particular VLAN identifier with the specified protocol to each frame that arrives on a ...
Page 47 - Protocol VLAN Configuration Screen Field Definitions; upper
Protocol VLAN Configuration Screen VLAN Configuration 3-25 Field Definitions Table 3-6 Protocol VLAN Configuration Screen Field Definitions Use this field … To … VLAN ID - upper part of screen (Selectable) Display the VLAN IDs currently configured and may be selected after the screen is saved to cal...
Page 48 - Protocol Type
Protocol VLAN Configuration Screen 3-26 VLAN Configuration Protocol Type (Selectable) Select one of the following protocol types: IP – pertains to all IP associated Ether Types (i.e., 0x0x0800, 0x0806, and, 0x8035). IPX – pertains to all IPX associated Ether Types (i.e., 0x8137, 0x8138, and special ...
Page 49 - Protocol; Assigning a Protocol Family to a VLAN ID
Protocol VLAN Configuration Screen VLAN Configuration 3-27 3.8.1 Displaying the Current Protocol, VLAN ID, andPort Assignments In some instances it may be desirable to see which VLAN IDs and the associated ports that are currently assigned to a particular protocol. To display this information, proce...
Page 50 - selection in the Protocol field.
Protocol VLAN Configuration Screen 3-28 VLAN Configuration 2. Enter the VLAN ID. If a new VLAN ID is entered that has not been created on the switch, use a unique number between 2 and 4094. The VLAN IDs of 0, 1, and 4095 may not be used for user-defined VLANs.A FID will automatically be assigned to ...
Page 51 - command at the bottom of the screen.; Displaying the Protocol Types on Current Ports; Highlight the; line of information; containing the VLAN ID of interest to display the current; PROTOCOL PORTS CONFIGURATION SCREEN
Protocol Ports Configuration Screen VLAN Configuration 3-29 11. Press ENTER and the new settings are displayed under the VLAN ID, Protocol Type, and Configured Ports values. 12. Use the arrow keys to highlight the SAVE command at the bottom of the screen. 13. Press ENTER. The message “SAVED OK” disp...
Page 52 - Protocol Ports Configuration Screen; Protocol Ports Configuration Screen Field Definitions; Display the current ports associated with the VLAN ID.
Protocol Ports Configuration Screen 3-30 VLAN Configuration Screen Example Figure 3-10 Protocol Ports Configuration Screen Field Definitions Table 3-7 Protocol Ports Configuration Screen Field Definitions Use this field … To … Current Protocol Ports (Read-Only) Display the current ports associated w...
Page 53 - Adding/Deleting Ports Associated with a VLAN ID
Protocol Ports Configuration Screen VLAN Configuration 3-31 3.9.1 Adding/Deleting Ports Associated with a VLAN ID To add or delete ports from a VLAN, proceed as follows: 1. Use the arrow keys to highlight the Port field. 2. Press the SPACE bar to step to the appropriate port number. The associated p...
Page 54 - QUICK VLAN WALKTHROUGH; shown in the illustrations for this walkthrough.
Quick VLAN Walkthrough 3-32 VLAN Configuration 3.10 QUICK VLAN WALKTHROUGH The procedures below provide a short tutorial walkthrough that presents each of the steps necessary to configure a new VLAN, assign a port to it, and check the Port VLAN List of the port. You may wish to follow this walkthrou...
Page 55 - Walkthrough Stage One; For the purposes of this walkthrough, port 3 will be configured.
Quick VLAN Walkthrough VLAN Configuration 3-33 Figure 3-11 Walkthrough Stage One It is now time to assign a port to this new VLAN. 9. Use the arrow keys to highlight the RETURN command at the bottom of the screen. Press ENTER. The 802.1Q VLAN Configuration Menu screen displays. Use the arrow keys to...
Page 56 - and; field updates showing the name assigned to this VLAN,; TEST VLAN; command at the bottom of the screen. Press ENTER.; Walkthrough Stage Two
Quick VLAN Walkthrough 3-34 VLAN Configuration 11. Use the SPACE bar to step sequentially through the previously configured VLAN ID numbers. When the number 0002 (the new VLAN ID) is displayed, the FID field updates to 0002, and the VLAN Name field updates showing the name assigned to this VLAN, TES...
Page 57 - Port Mode; field for port 10. Use the SPACE bar or; TRUNK; Walkthrough Stage Three; DEVICE VLAN; menu item. Press ENTER. The Device VLAN Configuration screen,
Quick VLAN Walkthrough VLAN Configuration 3-35 13. Use the arrow keys to highlight the Port Mode field for port 10. Use the SPACE bar or BACKSPACE key to step sequentially through the possible settings of the port until 1Q TRUNK is displayed. 14. Use the arrow keys to highlight the SAVE command at t...
Page 58 - Walkthrough Stage Four; Press the SPACE bar to toggle the field to display Enabled.
Quick VLAN Walkthrough 3-36 VLAN Configuration Figure 3-14 Walkthrough Stage Four 16. Use the arrow keys to highlight the Admin Status field of VLAN ID 2, the TEST VLAN. 17. Press the SPACE bar to toggle the field to display Enabled. 18. Use the arrow keys to highlight the SAVE command at the bottom...
Page 59 - Final Walkthrough Stage
Quick VLAN Walkthrough VLAN Configuration 3-37 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 b...
Page 61 - Examples; Chapter 3; . Also provided in the discussion of each example is a; EXAMPLE 1, SINGLE SWITCH OPERATION; shows the initial state of the switch.; Example 1, Single Switch Operation
Examples 4-1 4 Examples This chapter provides examples of how VLAN aware SmartSwitches can be configured to group users at the port level to create VLANs in existing networks. Each example presents a problem and shows how it is solved by configuring the switches using the VLAN Local Management scree...
Page 62 - Solving the Problem; Switch Configured for VLANs
Example 1, Single Switch Operation 4-2 Examples 4.1.1 Solving the Problem To set up this switch, users will be assigned to two new VLANs, red stations to the Red VLAN, and blue stations to the Blue VLAN. The information below describes how the switch is configured to create these two VLANs and how u...
Page 63 - Frame Handling; As shown in
Example 2, VLANs Across Multiple Switches Examples 4-3 4.1.2 Frame Handling This section describes the operations of the switch when two frames are received. The first frame is a broadcast sent by station R1. 1. Station R1 transmits the broadcast frame. The switch receives this frame on Port 1. As t...
Page 64 - Example 2, VLANs Across Multiple Switches
Example 2, VLANs Across Multiple Switches 4-4 Examples Figure 4-3 Example 2, VLANs Across Multiple Switches 4.2.1 Solving 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 an...
Page 65 - Switch 4
Example 2, VLANs Across Multiple Switches Examples 4-5 Switch 4 Switch 4 is set as follows: 1. Two VLANs are added to the list of VLANs in the Device/VLAN Configuration screen and assigned to a FID. In this example they are as follows: • VLAN ID 2, FID 2, with a VLAN Name of Red • VLAN ID 3, FID 3, ...
Page 66 - Bridge 1 Broadcasts Frames
Example 2, VLANs Across Multiple Switches 4-6 Examples 2. A Port VLAN ID is assigned to each port (1 and 3) as follows using the Port Assignment screen: • Port 1, VLAN ID: 223 for the Blue VLAN • Port 3, VLAN ID: 222 for the Red VLAN These settings change the configuration of the switch, so that Por...
Page 67 - shows the path taken to this point to reach Switch 2.; Transmitting to Switch 4
Example 2, VLANs Across Multiple Switches Examples 4-7 2. Switch 4 receives the frame from Bridge 1 and immediately classifies it as belonging to the Red VLAN. After the frame is classified, Switch 4 checks the Destination Address and, upon discovering that it is a Broadcast Destination Address, for...
Page 68 - Transmitting to Bridge 4
Example 3, 1D Trunk Connection to 802.1Q VLAN Network 4-8 Examples 3. When Switch 2 receives the tagged frame on its Port 2, it checks the frame’s VLAN Tag Header and determines that the frame is classified as belonging to the Red VLAN, and that the frame is a broadcast frame. Switch 2 forwards the ...
Page 69 - As illustrated in; Example 3, 1D Trunk Connection to 802.1Q VLAN Network
Example 3, 1D Trunk Connection to 802.1Q VLAN Network Examples 4-9 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. As illustrated in Figure 4-7...
Page 70 - Example 2, VLANs Across; Switch 4 is set as follows:; Switch 2; Switch 2 is set as follows:; Switch 1; VLAN ID 4, FID 4, with a VLAN Name of Green
Example 3, 1D Trunk Connection to 802.1Q VLAN Network 4-10 Examples The Green Incorporated Network Administrators want to continue to separate normal network traffic between the Blue and Red VLANs, and create a new isolated VLAN for Green, Incorporated users. All divisions in the facility are to hav...
Page 72 - Switch 2 receives the tagged Red VLAN frame on Port 2, as shown in; Switch 2 Forwards to 1Q Trunk; for Switch 1 is updated to contain User B.
Example 3, 1D Trunk Connection to 802.1Q VLAN Network 4-12 Examples Figure 4-8 Bridge 1 Broadcasts Frames 3. Switch 2 receives the tagged Red VLAN frame on Port 2, as shown in Figure 4-9 . The VLAN Tag in the frame is maintained, classifying the frame as belonging to the Red VLAN. The switch forward...
Page 73 - Switch 1 Forwards to 1D Trunk
Example 3, 1D Trunk Connection to 802.1Q VLAN Network Examples 4-13 Figure 4-10 Switch 1 Forwards to 1D Trunk 5. The Mail Server receives the broadcast frame and recognizes it. The Mail Server responds with a unicast frame to User B. This frame crosses the 1D Trunk and is received by Switch 1. Switc...
Page 74 - In this example, illustrated in
Example 4, Isolating Network Traffic According to Protocol 4-14 Examples 8. Bridge 1 receives the frame and recognizes User B’s MAC address. The frame is forwarded to the correct port and the bridge’s Source Address Table is updated with an entry for the Mail Server’s MAC address. User B receives th...
Page 75 - Example 4, Isolating Traffic According to Protocol; Connection to 802.1Q VLAN Network
Example 4, Isolating Network Traffic According to Protocol Examples 4-15 Figure 4-11 Example 4, Isolating Traffic According to Protocol 4.4.1 Solving the Problem Much of the existing network configuration can remain as it was for Example 3, 1D Trunk Connection to 802.1Q VLAN Network . However, Switc...
Page 76 - Switch 3; Switch 3 is set as follows:; Switch 5; Switch 5 is set as follows:
Example 4, Isolating Network Traffic According to Protocol 4-16 Examples Two 1Q Trunk ports must be activated and configured on Switch 3, and one 1Q Trunk port must be activated and configured on Switch 4. Ports 2, 3, 4, 5, 6, 7, and 8 of Switch 5 are connected to the Publication Department devices....
Page 79 - Index; Numerics; vii
Index-1 Index Numerics 1D Trunk 1-5 , 3-16 , 4-8 1Q Trunk 1-5 , 3-15 , 4-3 C Chapters organization vii Configuration 2-2 Conventions viii D Default VLAN 1-4 Device VLAN Configuration screen ADD/DEL (Toggle) 3-10 Admin Status (Toggle) 3-9 FID - lower part of screen (Modifiable) 3-10 FID - upper part ...