Enterasys SmartSwitch 2200 Manuale del proprietario

802.1Q VLAN User’s Guide

Local Management Supplement

9033135-02

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, firmware, or software described in this document is subject to change without notice.

IN NO EVENT SHALL Enterasys Networks BE LIABLE FOR ANY INCIDENTAL, INDIRECT, SPECIAL, OR

CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST PROFITS)

ARISING OUT OF OR RELATED TO THIS DOCUMENT, WEB SITE, OR THE INFORMATION CONTAINED IN

THEM, EVEN IF Enterasys Networks HAS BEEN ADVISED OF, KNEW OF, OR SHOULD HAVE KNOWN OF,

THE POSSIBILITY OF SUCH DAMAGES.

Enterasys Networks, Inc.

35 Industrial Way

Rochester, NH 03867

Printed in the United States of America.

Order Number: 9033135-02 January 2003

LANVIEW is a registered trademark and Enterasys Networks, NETSIGHT, MATRIX, WEBVIEW, and any logos

associated therewith, are trademarks of Enterasys Networks, Inc. in the United States and other countries.

All other product names mentioned in this manual may be trademarks or registered trademarks of their respective

companies.

Version: Information in this guide refers to firmware version 3.x and 4.x only.

It does not refer to firmware version 5.x.

This guide applies to 2X2XX, 6X2XX, and 6X3XX Ethernet switch

devices only.

Contents iii

Contents

1INTRODUCTION

1.1 Using This Supplement ................................................................................... 1-2

1.2 Structure of This Document ............................................................................ 1-2

1.3 Overview of the Revision ................................................................................ 1-2

2LOCAL MANAGEMENT SCREENS

2.1 Revised Hierarchy........................................................................................... 2-1

2.2 Screen Format ................................................................................................ 2-1

2.3 VLAN Classification Configuration Screen...................................................... 2-2

2.3.1 Classification Precedence Rules .................................................... 2-8

2.3.2 Displaying the Current VID/Classification Assignments................ 2-11

2.3.3 Assigning a Classification to a VID ............................................... 2-11

2.3.4 Deleting Line Items ....................................................................... 2-12

2.4 Protocol Port Configuration Screen............................................................... 2-13

2.4.1 Assigning Ports to a Classification Rule ....................................... 2-15

3CONFIGURATION EXAMPLES

3.1 Example 4, Isolating Network Traffic According to Protocol ........................... 3-1

3.1.1 Solving the Problem........................................................................ 3-2

3.2 Example 5, Filtering Traffic According to a Layer 4 Classification Rule.......... 3-5

3.2.1 Solving the Problem........................................................................ 3-6

3.3 Example 6, Securing Sensitive Information According to Subnet ................... 3-6

3.3.1 Solving the Problem........................................................................ 3-7

INDEX

iv Figures

Figure Page

Figures

2-1 802.1Q VLAN Screen Hierarchy..................................................................................... 2-1

2-2 Example of a Local Management Screen ....................................................................... 2-2

2-3 VLAN Classification Configuration Screen...................................................................... 2-3

2-4 Protocol Port Configuration Screen .............................................................................. 2-13

3-1 Example 4, Isolating Traffic According to Protocol ......................................................... 3-2

3-2 Example 5, Filtering Traffic According to a Classification ............................................... 3-5

3-3 Example 6, Securing Traffic to One Subnet.................................................................... 3-7

Ta bl e s vTa bl e s v

Tabl e Page

Tables

2-1 Classification List..........................................................................................................2-4

2-2 Classification Precedence ............................................................................................2-9

Introduction 1-1

Introduction

The firmware in the SmartSwitch 2200 standalone devices and SmartSwitch 6000 modules has

been revised up to 3.10.xx and 3.11.xx. This document provides the following changes and

additions to the 802.1Q VLAN User’s Guide (9032599-03) as a result of both firmware revisions.

Changes Due to Revision 3.10.xx

•A replacement drawing for the 802.1Q VLAN Screen Hierarchy in the user’s guide that shows

the screens of the hierarchy that were affected.

•Descriptions of the new VLAN Classification Configuration screen and the Protocol Port

Configuration screen, which replace the current descriptions of the Protocol VLAN

Configuration screen and the Protocol Port Configuration screen, respectively. Also included is

information about protocol Classification Preference Rules.

•A revised Example 4 and two new examples (5 and 6), which show how the new screens can be

applied to configure a network.

Change Due to Revision 3.11.xx

The procedure was changed to mark and delete one or more line items in the VLAN Classification

Configuration screen.

IMPORTANT NOTICE

Information in this guide refers to firmware version 3.x and 4.x only. It does not refer to firmware

version 5.x.

This guide applies to 2X2XX, 6X2XX, and 6X3XX Ethernet switch devices only.

Using This Supplement

1-2 Introduction

1.1 USING THIS SUPPLEMENT

Read through this supplement completely to gain an understanding of the new capabilities

introduced by the new firmware and how to take full advantage of them when configuring your

SmartSwitch device.

1.2 STRUCTURE OF THIS DOCUMENT

This document is organized as follows:

Chapter 1, Introduction – Describes the scope of this supplement and identifies the user’s guides

that are affected. Provides an overview of the new functions introduced by the 03.10.xx and

03.11.xx firmware revisions and an overview of what an administrator should consider when

configuring SmartSwitch devices in the network.

Chapter 2, Local Management Screens – Describes the new VLAN Classification Configuration

screen, the replacement Protocol Port Configuration screen, and the Classification Preference

Rules, which must be considered before configuring the SmartSwitch device.

Chapter 3, Configuration Examples – Provides three examples of how to contain, filter, and

secure traffic in a network using the new screens.

1.3 OVERVIEW OF THE REVISION

Firmware revisions for the SmartSwitch 2200/6000 series devices allow network administrators to

classify frames received by the switch based on specific Layer 2, 3, and 4 information. The

classification is used for two independent functions:

•Create 802.1Q VLANs based on information contained in Layers 2 through 4 of the received

frames.

•Prioritize traffic throughout the network using the 802.1p frame tagging method.

These new functions translate into the following four key features:

Traffic Containment

Broadcast intensive protocols such as IPX and AppleTalk can be confined to the intended users,

servers, and segments by creating VLANs specifically for that purpose.

NOTE: Since this document applies to several SmartSwitch models, the term

SmartSwitch device is used in the following text instead of a particular model number.

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