GS1920-24_V4-1_Ed2

Quick Start Guide

www.zyxel.com

GS1920 SeriesIntelligent Layer 2 GbE Switch

Version 4.10Edition 2, 03/2014

Copyright 2013 ZyXEL Communications Corporation

Users Guide

Default Login DetailsIP Address https://192.168.1.1User Name adminPassword 1234

GS1920 Series Users Guide2

IMPORTANT!

READ CAREFULLY BEFORE USE.

KEEP THIS GUIDE FOR FUTURE REFERENCE.

This is a Users Guide for a series of products. Not all products support all firmware features. Screenshots and graphics in this book may differ slightly from your product due to differences in your product firmware or your computer operating system. Every effort has been made to ensure that the information in this manual is accurate.

Contents Overview

GS1920 Series Users Guide 3

Contents Overview

Users Guide .......................................................................................................................................17

Getting to Know Your Switch ...................................................................................................................19Hardware Installation and Connection ....................................................................................................24Hardware Panels .....................................................................................................................................27

Technical Reference ..........................................................................................................................33

The Web Configurator .............................................................................................................................35Initial Setup Example ..............................................................................................................................42Tutorials ..................................................................................................................................................46System Status and Port Status ................................................................................................................54Basic Setting ..........................................................................................................................................59VLAN .......................................................................................................................................................85Static MAC Forward Setup ....................................................................................................................101Static Multicast Forward Setup ..............................................................................................................103 Filtering ..............................................................................................................................................106Spanning Tree Protocol .........................................................................................................................108Bandwidth Control .................................................................................................................................127Broadcast Storm Control .......................................................................................................................129Mirroring ................................................................................................................................................131Link Aggregation ...................................................................................................................................133Port Authentication ................................................................................................................................140Port Security ..........................................................................................................................................146Classifier ...............................................................................................................................................149 Policy Rule ...........................................................................................................................................154Queuing Method ....................................................................................................................................158Multicast ................................................................................................................................................161AAA .......................................................................................................................................................175IP Source Guard ...................................................................................................................................187Loop Guard ...........................................................................................................................................210Layer 2 Protocol Tunneling ...................................................................................................................214PPPoE ...................................................................................................................................................218Error Disable .........................................................................................................................................227Green Ethernet ......................................................................................................................................233Link Layer Discovery Protocol (LLDP) ..................................................................................................235 Static Route ..........................................................................................................................................259 Differentiated Services .......................................................................................................................262 DHCP ...................................................................................................................................................266ARP Setup ............................................................................................................................................280

Contents Overview


Maintenance ..........................................................................................................................................284Access Control ......................................................................................................................................293Diagnostic ............................................................................................................................................. 311Syslog ...................................................................................................................................................313Cluster Management .............................................................................................................................316MAC Table .............................................................................................................................................322ARP Table .............................................................................................................................................325Path MTU Table ....................................................................................................................................327Configure Clone ....................................................................................................................................328Neighbor Table ......................................................................................................................................330Troubleshooting ....................................................................................................................................336

Table of Contents


Table of Contents

Contents Overview ...............................................................................................................................3

Table of Contents .................................................................................................................................5

Part I: Users Guide ......................................................................................... 17

Chapter 1Getting to Know Your Switch.............................................................................................................19

1.1 Introduction .......................................................................................................................................191.1.1 Backbone Application ..............................................................................................................201.1.2 Bridging Example ....................................................................................................................201.1.3 High Performance Switching Example ....................................................................................211.1.4 IEEE 802.1Q VLAN Application Examples ..............................................................................21

1.2 Ways to Manage the Switch ..............................................................................................................221.3 Good Habits for Managing the Switch ...............................................................................................22

Chapter 2Hardware Installation and Connection .............................................................................................24

2.1 Installation Scenarios ........................................................................................................................242.2 Desktop Installation Procedure ........................................................................................................242.3 Mounting the Switch on a Rack ........................................................................................................24

2.3.1 Rack-mounted Installation Requirements ................................................................................242.3.2 Attaching the Mounting Brackets to the Switch .......................................................................252.3.3 Mounting the Switch on a Rack ...............................................................................................25

Chapter 3Hardware Panels.................................................................................................................................27

3.1 Front Panel ........................................................................................................................................273.1.1 Gigabit Ethernet Ports ............................................................................................................273.1.2 Mini-GBIC Slots .......................................................................................................................283.1.3 LED Mode (only available for GS1920-48HP) .........................................................................30

3.2 Rear Panel ........................................................................................................................................303.2.1 Power Connector .....................................................................................................................30

3.3 LEDs ...............................................................................................................................................313.4 Reset to Factory Defaults ..................................................................................................................31

3.4.1 Side Panels .............................................................................................................................32

Table of Contents


Part II: Technical Reference............................................................................ 33

Chapter 4The Web Configurator ........................................................................................................................35

4.1 Overview ...........................................................................................................................................354.2 System Login .................................................................................................................................354.3 The Status Screen ........................................................................................................................36

4.3.1 Change Your Password ........................................................................................................394.4 Saving Your Configuration ................................................................................................................404.5 Switch Lockout ................................................................................................................................404.6 Resetting the Switch ......................................................................................................................414.7 Logging Out of the Web Configurator ..............................................................................................414.8 Help ..................................................................................................................................................41

Chapter 5Initial Setup Example..........................................................................................................................42

5.1 Overview ...........................................................................................................................................425.1.1 Creating a VLAN ......................................................................................................................425.1.2 Setting Port VID .......................................................................................................................43

5.2 Configuring Switch Management IP Address ....................................................................................44

Chapter 6Tutorials...............................................................................................................................................46

6.1 Overview ...........................................................................................................................................466.2 How to Use DHCP Snooping on the Switch ......................................................................................466.3 How to Use DHCP Relay on the Switch ............................................................................................49

6.3.1 DHCP Relay Tutorial Introduction ............................................................................................496.3.2 Creating a VLAN ......................................................................................................................506.3.3 Configuring DHCP Relay .........................................................................................................526.3.4 Troubleshooting .......................................................................................................................53

Chapter 7System Status and Port Status..........................................................................................................54

7.1 Overview ...........................................................................................................................................547.1.1 What You Can Do ....................................................................................................................54

7.2 Port Status Summary ...................................................................................................................547.2.1 Status: Port Details .............................................................................................................55

Chapter 8Basic Setting ......................................................................................................................................59

8.1 Overview ...........................................................................................................................................598.1.1 What You Can Do ....................................................................................................................59

8.2 System Information ........................................................................................................................59

Table of Contents


8.3 General Setup ...............................................................................................................................618.4 Introduction to VLANs ......................................................................................................................638.5 Switch Setup Screen ......................................................................................................................648.6 IP Setup ...........................................................................................................................................65

8.6.1 Management IP Addresses .....................................................................................................658.7 Port Setup ........................................................................................................................................678.8 PoE Status .......................................................................................................................................69

8.8.1 PoE Setup ..............................................................................................................................718.9 Interface Setup ..................................................................................................................................728.10 IPv6 .................................................................................................................................................73

8.10.1 IPv6 Interface Status .............................................................................................................748.10.2 IPv6 Configuration .................................................................................................................778.10.3 IPv6 Global Setup ..................................................................................................................778.10.4 IPv6 Interface Setup ..............................................................................................................788.10.5 IPv6 Link-Local Address Setup .............................................................................................798.10.6 IPv6 Global Address Setup ...................................................................................................808.10.7 IPv6 Neighbor Discovery Setup .............................................................................................818.10.8 IPv6 Neighbor Setup .............................................................................................................828.10.9 DHCPv6 Client Setup ............................................................................................................83

Chapter 9VLAN ....................................................................................................................................................85

9.1 Overview ...........................................................................................................................................859.1.1 What You Can Do ....................................................................................................................859.1.2 What You Need to Know ..........................................................................................................85

9.2 VLAN Status .....................................................................................................................................889.2.1 VLAN Details ..........................................................................................................................89

9.3 Configure a Static VLAN ...............................................................................................................899.4 Configure VLAN Port Settings .......................................................................................................919.5 Subnet Based VLANs ......................................................................................................................92

9.5.1 Configuring Subnet Based VLAN ..........................................................................................939.6 Protocol Based VLANs .....................................................................................................................94

9.6.1 Configuring Protocol Based VLAN ........................................................................................959.7 Port-based VLAN Setup ...............................................................................................................96

9.7.1 Configure a Port-based VLAN ................................................................................................979.8 Technical Reference ..........................................................................................................................99

9.8.1 Create an IP-based VLAN Example ........................................................................................99

Chapter 10Static MAC Forward Setup...............................................................................................................101

10.1 Overview .......................................................................................................................................10110.1.1 What You Can Do ................................................................................................................101

10.2 Configuring Static MAC Forwarding .........................................................................................101

Table of Contents


Chapter 11Static Multicast Forward Setup .......................................................................................................103

11.1 Static Multicast Forward Setup Overview .....................................................................................10311.1.1 What You Can Do ................................................................................................................10311.1.2 What You Need To Know .....................................................................................................103

11.2 Configuring Static Multicast Forwarding ........................................................................................104

Chapter 12 Filtering...........................................................................................................................................106

12.1 Filtering Overview ........................................................................................................................10612.1.1 What You Can Do ................................................................................................................106

12.2 Configure a Filtering Rule ............................................................................................................106

Chapter 13Spanning Tree Protocol....................................................................................................................108

13.1 Spanning Tree Protocol Overview .................................................................................................10813.1.1 What You Can Do ................................................................................................................10813.1.2 What You Need to Know ......................................................................................................108

13.2 Spanning Tree Protocol Status Screen ......................................................................................... 11113.3 Spanning Tree Configuration ....................................................................................................... 11113.4 Configure Rapid Spanning Tree Protocol ................................................................................... 11213.5 Rapid Spanning Tree Protocol Status ..................................................................................... 11413.6 Configure Multiple Rapid Spanning Tree Protocol ..................................................................... 11513.7 Multiple Rapid Spanning Tree Protocol Status ........................................................................ 11713.8 Configure Multiple Spanning Tree Protocol ................................................................................ 11813.9 Multiple Spanning Tree Port Configuration ...................................................................................12113.10 Multiple Spanning Tree Protocol Status ................................................................................12213.11 Technical Reference ....................................................................................................................124

13.11.1 MSTP Network Example ....................................................................................................12413.11.2 MST Region .......................................................................................................................12513.11.3 MST Instance .....................................................................................................................12613.11.4 Common and Internal Spanning Tree (CIST) ....................................................................126

Chapter 14Bandwidth Control............................................................................................................................127

14.1 Overview ......................................................................................................................................12714.1.1 What You Can Do ................................................................................................................127

14.2 Bandwidth Control Setup ..............................................................................................................127

Chapter 15Broadcast Storm Control .................................................................................................................129

15.1 Broadcast Storm Control Overview ..............................................................................................12915.1.1 What You Can Do ................................................................................................................129

Table of Contents


15.2 Broadcast Storm Control Setup .....................................................................................................129

Chapter 16Mirroring ............................................................................................................................................131

16.1 Mirroring Overview .......................................................................................................................13116.1.1 What You Can Do ................................................................................................................131

16.2 Port Mirroring Setup ......................................................................................................................131

Chapter 17Link Aggregation ..............................................................................................................................133

17.1 Overview ......................................................................................................................................13317.1.1 What You Can Do ................................................................................................................13317.1.2 What You Need to Know ......................................................................................................133

17.2 Link Aggregation Status ................................................................................................................13417.3 Link Aggregation Setting .............................................................................................................13517.4 Link Aggregation Control Protocol .............................................................................................13717.5 Technical Reference ......................................................................................................................138

17.5.1 Static Trunking Example ......................................................................................................138

Chapter 18Port Authentication ..........................................................................................................................140

18.1 Port Authentication Overview .......................................................................................................14018.1.1 What You Can Do ................................................................................................................14018.1.2 What You Need to Know ......................................................................................................140

18.2 Port Authentication Configuration .................................................................................................14118.3 Activate IEEE 802.1x Security ..................................................................................................141

18.3.1 Guest VLAN ........................................................................................................................143

Chapter 19Port Security .....................................................................................................................................146

19.1 Port Security Overview .................................................................................................................14619.1.1 What You Can Do ................................................................................................................146

19.2 Port Security Setup .......................................................................................................................146

Chapter 20Classifier............................................................................................................................................149

20.1 Overview .......................................................................................................................................14920.1.1 What You Can Do ................................................................................................................14920.1.2 What You Need to Know ......................................................................................................149

20.2 Configuring the Classifier .............................................................................................................14920.2.1 Viewing and Editing Classifier Configuration ......................................................................151

20.3 Classifier Example ........................................................................................................................153

Table of Contents


Chapter 21 Policy Rule .......................................................................................................................................154

21.1 Policy Rules Overview .................................................................................................................15421.1.1 What You Can Do ................................................................................................................154

21.2 Configuring Policy Rules ...............................................................................................................15421.2.1 Viewing and Editing Policy Configuration ...........................................................................157

21.3 Policy Example ..............................................................................................................................157

Chapter 22Queuing Method ...............................................................................................................................158

22.1 Queuing Method Overview ............................................................................................................15822.1.1 What You Can Do ................................................................................................................15822.1.2 What You Need to Know ......................................................................................................158

22.2 Configuring Queuing .....................................................................................................................159

Chapter 23Multicast ............................................................................................................................................161

23.1 Multicast Overview ........................................................................................................................16123.1.1 What You Can Do ................................................................................................................16123.1.2 What You Need to Know ......................................................................................................161

23.2 Multicast Setup ..............................................................................................................................16323.3 IPv4 Multicast Status ....................................................................................................................164

23.3.1 IGMP Snooping ..................................................................................................................16423.4 IGMP Snooping VLAN .................................................................................................................167

23.4.1 IGMP Filtering Profile .........................................................................................................16823.5 General MVR Configuration .........................................................................................................170

23.5.1 MVR Group Configuration ..................................................................................................17123.5.2 MVR Configuration Example ...............................................................................................173

Chapter 24AAA ....................................................................................................................................................175

24.1 AAA Overview ...............................................................................................................................17524.1.1 What You Can Do ................................................................................................................17524.1.2 What You Need to Know ......................................................................................................175

24.2 AAA Screens .................................................................................................................................17624.3 RADIUS Server Setup ...............................................................................................................17624.4 TACACS+ Server Setup ............................................................................................................17824.5 AAA Setup ....................................................................................................................................18024.6 Technical Reference ......................................................................................................................182

24.6.1 Vendor Specific Attribute .....................................................................................................18224.6.2 Supported RADIUS Attributes .............................................................................................18424.6.3 Attributes Used for Authentication .......................................................................................184

Table of Contents


Chapter 25IP Source Guard................................................................................................................................187


25.2 IP Source Guard ..........................................................................................................................18825.3 IP Source Guard Static Binding ....................................................................................................18925.4 DHCP Snooping ...........................................................................................................................19025.5 DHCP Snooping Configure ..........................................................................................................193

25.5.1 DHCP Snooping Port Configure .........................................................................................19525.5.2 DHCP Snooping VLAN Configure ......................................................................................19725.5.3 DHCP Snooping VLAN Port Configure ................................................................................197

25.6 ARP Inspection Status .................................................................................................................19925.7 ARP Inspection VLAN Status ........................................................................................................20025.8 ARP Inspection Log Status ...........................................................................................................20025.9 ARP Inspection Configure .............................................................................................................202

25.9.1 ARP Inspection Port Configure ............................................................................................20325.9.2 ARP Inspection VLAN Configure .........................................................................................205

25.10 Technical Reference ....................................................................................................................20625.10.1 DHCP Snooping Overview ................................................................................................20625.10.2 ARP Inspection Overview ..................................................................................................208

Chapter 26Loop Guard .......................................................................................................................................210

26.1 Loop Guard Overview ..................................................................................................................21026.1.1 What You Can Do ................................................................................................................21026.1.2 What You Need to Know ......................................................................................................210

26.2 Loop Guard Setup .........................................................................................................................212

Chapter 27Layer 2 Protocol Tunneling..............................................................................................................214

27.1 Layer 2 Protocol Tunneling Overview ..........................................................................................21427.1.1 What You Can Do ................................................................................................................21427.1.2 What You Need to Know ......................................................................................................214

27.2 Configuring Layer 2 Protocol Tunneling ........................................................................................215

Chapter 28PPPoE ................................................................................................................................................218

28.1 PPPoE Intermediate Agent Overview ...........................................................................................21828.1.1 What You Can Do ................................................................................................................21828.1.2 What You Need to Know ......................................................................................................218

28.2 The PPPoE Screen .......................................................................................................................22128.3 PPPoE Intermediate Agent ..........................................................................................................221

Table of Contents


28.3.1 PPPoE IA Per-Port .............................................................................................................22228.3.2 PPPoE IA Per-Port Per-VLAN ............................................................................................22428.3.3 PPPoE IA for VLAN ............................................................................................................225

Chapter 29Error Disable .....................................................................................................................................227

29.1 Error Disable Overview .................................................................................................................22729.2 The Error Disable Screens Overview ............................................................................................22729.3 Error-Disable Status .....................................................................................................................22729.4 CPU Protection Configuration ......................................................................................................22929.5 Error-Disable Detect Configuration ..............................................................................................23029.6 Error-Disable Recovery Configuration .........................................................................................231

Chapter 30Green Ethernet..................................................................................................................................233

30.1 Green Ethernet Overview .............................................................................................................23330.2 Configuring Green Ethernet ..........................................................................................................233

Chapter 31Link Layer Discovery Protocol (LLDP) ...........................................................................................235

31.1 LLDP Overview .............................................................................................................................23531.2 LLDP-MED Overview ....................................................................................................................23631.3 LLDP Screens ...............................................................................................................................23731.4 LLDP Local Status ........................................................................................................................238

31.4.1 LLDP Local Port Status Detail ............................................................................................23931.5 LLDP Remote Status ....................................................................................................................243

31.5.1 LLDP Remote Port Status Detail ........................................................................................24431.6 LLDP Configuration ......................................................................................................................250

31.6.1 LLDP Configuration Basic TLV Setting ...............................................................................25231.6.2 LLDP Configuraion Basic Org-specific TLV Setting ............................................................253

31.7 LLDP-MED Configuration .............................................................................................................25431.8 LLDP-MED Network Policy .........................................................................................................25531.9 LLDP-MED Location ...................................................................................................................256

Chapter 32 Static Route ......................................................................................................................................259

32.1 Static Route Overview ..................................................................................................................25932.1.1 What You Can Do ................................................................................................................259

32.2 Static Routing ................................................................................................................................25932.3 Configuring Static Routing ..........................................................................................................259

Chapter 33 Differentiated Services..................................................................................................................262

Table of Contents


33.1 Differentiated Services Overview .................................................................................................26233.1.1 What You Can Do ................................................................................................................26233.1.2 What You Need to Know ......................................................................................................262

33.2 Activating DiffServ ........................................................................................................................26333.3 DSCP-to-IEEE 802.1p Priority Settings ......................................................................................264

33.3.1 Configuring DSCP Settings .................................................................................................265

Chapter 34 DHCP.................................................................................................................................................266

34.1 DHCP Overview ............................................................................................................................26634.1.1 What You Can Do ................................................................................................................26634.1.2 What You Need to Know ......................................................................................................266

34.2 DHCP Configuration ......................................................................................................................26734.3 DHCPv4 Status ............................................................................................................................26834.4 DHCPv4 Relay .............................................................................................................................268

34.4.1 DHCPv4 Relay Agent Information .......................................................................................26834.4.2 DHCPv4 Option 82 Profile ...................................................................................................26934.4.3 Configuring DHCPv4 Global Relay ......................................................................................27134.4.4 DHCPv4 Global Relay Port Configure ................................................................................27234.4.5 Global DHCP Relay Configuration Example .......................................................................273

34.5 Configuring DHCPv4 VLAN Settings .........................................................................................27434.5.1 DHCPv4 VLAN Port Configure ...........................................................................................27634.5.2 Example: DHCP Relay for Two VLANs ...............................................................................277

34.6 DHCPv6 Relay ..............................................................................................................................278

Chapter 35ARP Setup .........................................................................................................................................280

35.1 ARP Overview ..............................................................................................................................28035.1.1 What You Can Do ................................................................................................................28035.1.2 What You Need to Know ......................................................................................................280

35.2 ARP Setup ....................................................................................................................................28235.2.1 ARP Learning .....................................................................................................................282

Chapter 36Maintenance ......................................................................................................................................284

36.1 Overview .......................................................................................................................................28436.1.1 What You Can Do ................................................................................................................284

36.2 The Maintenance Screen ............................................................................................................28436.2.1 Load Factory Default ..........................................................................................................28536.2.2 Save Configuration ..............................................................................................................28536.2.3 Reboot System ....................................................................................................................286

36.3 Firmware Upgrade .....................................................................................................................28636.4 Restore a Configuration File ......................................................................................................287

Table of Contents


36.5 Backup a Configuration File .......................................................................................................28836.6 Tech-Support ................................................................................................................................28836.7 Technical Reference ......................................................................................................................290

36.7.1 FTP Command Line ............................................................................................................29036.7.2 Filename Conventions ........................................................................................................29036.7.3 FTP Command Line Procedure ..........................................................................................29136.7.4 GUI-based FTP Clients ........................................................................................................29136.7.5 FTP Restrictions .................................................................................................................292

Chapter 37Access Control .................................................................................................................................293

37.1 Access Control Overview ............................................................................................................29337.1.1 What You Can Do ................................................................................................................293

37.2 The Access Control Main Screen ..................................................................................................29337.3 Configuring SNMP ....................................................................................................................294

37.3.1 Configuring SNMP Trap Group .........................................................................................29537.3.2 Enabling/Disabling Sending of SNMP Traps on a Port ........................................................29637.3.3 Configuring SNMP User ...................................................................................................297

37.4 Setting Up Login Accounts ..........................................................................................................29937.5 Service Port Access Control .......................................................................................................30037.6 Remote Management ..............................................................................................................30137.7 Technical Reference ......................................................................................................................303

37.7.1 About SNMP ......................................................................................................................30337.7.2 Introduction to HTTPS .........................................................................................................305

Chapter 38Diagnostic ......................................................................................................................................... 311

38.1 Overview ....................................................................................................................................... 31138.2 Diagnostic .................................................................................................................................... 311

Chapter 39Syslog ................................................................................................................................................313

39.1 Syslog Overview ...........................................................................................................................31339.1.1 What You Can Do ................................................................................................................313

39.2 Syslog Setup .................................................................................................................................31339.3 Syslog Server Setup ....................................................................................................................314

Chapter 40Cluster Management ........................................................................................................................316

40.1 Cluster Management Overview ....................................................................................................31640.1.1 What You Can Do ................................................................................................................317

40.2 Cluster Management Status ..........................................................................................................31740.3 Clustering Management Configuration ........................................................................................318

Table of Contents


40.4 Technical Reference ......................................................................................................................32040.4.1 Cluster Member Switch Management ................................................................................320

Chapter 41MAC Table .........................................................................................................................................322

41.1 MAC Table Overview ....................................................................................................................32241.1.1 What You Can Do ................................................................................................................32241.1.2 What You Need to Know ......................................................................................................322

41.2 Viewing the MAC Table ................................................................................................................323

Chapter 42ARP Table ..........................................................................................................................................325


42.2 Viewing the ARP Table ..................................................................................................................325

Chapter 43Path MTU Table .................................................................................................................................327

43.1 Path MTU Overview .....................................................................................................................32743.2 Viewing the Path MTU Table .........................................................................................................327

Chapter 44Configure Clone................................................................................................................................328

44.1 Overview .......................................................................................................................................32844.2 Configure Clone ...........................................................................................................................328

Chapter 45Neighbor Table ..................................................................................................................................330

45.1 IPv6 Neighbor Table Overview .....................................................................................................33045.2 Viewing the IPv6 Neighbor Table ..................................................................................................330

Chapter 46Troubleshooting................................................................................................................................336

46.1 Power, Hardware Connections, and LEDs ....................................................................................33646.2 Switch Access and Login ..............................................................................................................33746.3 Switch Configuration .....................................................................................................................339

Appendix A Customer Support ........................................................................................................340

Appendix B Common Services ........................................................................................................346

Appendix C IPv6 ..............................................................................................................................349

Appendix D Legal Information .........................................................................................................357

Table of Contents


Index .................................................................................................................................................360

17

PART IUsers Guide


CHAPTER 1

Getting to Know Your Switch

1.1 IntroductionThis chapter introduces the main features and applications of the Switch. The GS1920 Series consist of the four following models:

GS1920-24

GS1920-24HP

GS1920-48

GS1920-48HP

Referring to PoE model(s) in this User's Guide only applies for GS1920-24HP and GS1920-48HP.

The Switch is a layer-2 standalone Ethernet switch with additional layer-2, layer-3, and layer-4 features suitable for Ethernets.

With its built-in web configurator, managing and configuring the Switch is easy. In addition, the Switch can also be managed via third-party SNMP management.

The following table describes the port features of the Switch by model.

The GS1920-48HP comes with a Power-over-Ethernet (PoE) feature. The GS1920-48HP supports the IEEE 802.3at High Power over Ethernet (PoE) standard and IEEE 802.3af PoE standard.

Key feature differences between Switch models are as follows. Other features are common to all models.

Table 1 Models and Port FeaturesSWITCH MODEL PORT FEATURESGS1920-24 and GS1920-24HP

20 100/1000 Mbps Ethernet ports 4 GbE dual personality interfaces 4 mini-GBIC slots 4 100/1000 Mbos RJ-45 ports 4 SFP interfaces

GS1920-48 and GS1920-48HP

44 100/1000 Mbps Ethernet ports 4 GbE dual personality interfaces 4 mini-GBIC slots 4 100/1000 Mbos RJ-45 ports 4 SFP interfaces

Chapter 1 Getting to Know Your Switch


The following table describes the PoE features of the Switch by model.

This section shows a few examples of using the Switch in various network environments.

1.1.1 Backbone Application

The Switch is an ideal solution for small networks where rapid growth can be expected in the near future. The Switch can be used standalone for a group of heavy traffic users. You can connect computers and servers directly to the Switchs port or connect other switches to the Switch.

In this example, all computers can share high-speed applications on the server. To expand the network, simply add more networking devices such as switches, routers, computers, print servers etc.

Figure 1 Backbone Application

1.1.2 Bridging Example

In this example, the Switch connects different company departments (RD and Sales) to the corporate backbone. It can alleviate bandwidth contention and eliminate server and network bottlenecks. All users that need high bandwidth can connect to high-speed department servers via the Switch. You can provide a super-fast uplink connection by using a Gigabit Ethernet/mini-GBIC port on the Switch.

Moreover, the Switch eases supervision and maintenance by allowing network managers to centralize multiple servers at a single location.

Table 2 Models and PoE FeaturesSWITCH MODEL POE FEATURESGS1920-24HP and GS1920-48HP

IEEE 802.3af PoE

GS1920-24HP and GS1920-48HP

IEEE 802.3 at High Power over Ethernet (PoE)


Power management mode - Classification


Power management mode - Consumption



Figure 2 Bridging Application

1.1.3 High Performance Switching Example

The Switch is ideal for connecting two networks that need high bandwidth. In the following example, use trunking to connect these two networks.

Switching to higher-speed LANs such as ATM (Asynchronous Transmission Mode) is not feasible for most people due to the expense of replacing all existing Ethernet cables and adapter cards, restructuring your network and complex maintenance. The Switch can provide the same bandwidth as ATM at much lower cost while still being able to use existing adapters and switches. Moreover, the current LAN structure can be retained as all ports can freely communicate with each other.

Figure 3 High Performance Switched Workgroup Application

1.1.4 IEEE 802.1Q VLAN Application Examples

A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Stations on a logical network belong to one group. A station can belong to more than one group. With VLAN, a station cannot directly talk to or hear from stations that are not in the same group(s) unless such traffic first goes through a router.

For more information on VLANs, refer to Chapter 9 on page 85.



1.1.4.1 Tag-based VLAN Example

Ports in the same VLAN group share the same frame broadcast domain thus increase network performance through reduced broadcast traffic. VLAN groups can be modified at any time by adding, moving or changing ports without any re-cabling.

Shared resources such as a server can be used by all ports in the same VLAN as the server. In the following figure only ports that need access to the server need to be part of VLAN 1. Ports can belong to other VLAN groups too.

Figure 4 Shared Server Using VLAN Example

1.2 Ways to Manage the SwitchUse any of the following methods to manage the Switch.

Web Configurator. This is recommended for everyday management of the Switch using a (supported) web browser. See Chapter 4 on page 35.

FTP. Use FTP for firmware upgrades and configuration backup/restore. See Section 36.7.1 on page 290.

SNMP. The Switch can be monitored by an SNMP manager. See Section 37.5 on page 300.

Cluster Management. Cluster Management allows you to manage multiple switches through one switch, called the cluster manager. See Chapter 40 on page 316.

1.3 Good Habits for Managing the SwitchDo the following things regularly to make the Switch more secure and to manage the Switch more effectively.

Change the password. Use a password thats not easy to guess and that consists of different types of characters, such as numbers and letters.

Write down the password and put it in a safe place.



Back up the configuration (and make sure you know how to restore it). Restoring an earlier working configuration may be useful if the device becomes unstable or even crashes. If you forget your password, you will have to reset the Switch to its factory default settings. If you backed up an earlier configuration file, you would not have to totally re-configure the Switch. You could simply restore your last configuration. See Section 3.4 on page 31 for how to reset the Switch.


CHAPTER 2

Hardware Installation and Connection

2.1 Installation ScenariosThis chapter shows you how to install and connect the Switch.

The Switch can be placed on a desktop or rack-mounted on a standard EIA rack. Use the rubber feet in a desktop installation and the brackets in a rack-mounted installation.

Note: For proper ventilation, allow at least 4 inches (10 cm) of clearance at the front and 3.4 inches (8 cm) at the back of the Switch. This is especially important for enclosed rack installations.

2.2 Desktop Installation Procedure

1 Make sure the Switch is clean and dry.

2 Set the Switch on a smooth, level surface strong enough to support the weight of the Switch and the connected cables. Make sure there is a power outlet nearby.

3 Make sure there is enough clearance around the Switch to allow air circulation and the attachment of cables and the power cord.

2.3 Mounting the Switch on a Rack The Switch can be mounted on an EIA standard size, 19-inch rack or in a wiring closet with other equipment. Follow the steps below to mount your Switch on a standard EIA rack using a rack-mounting kit.

2.3.1 Rack-mounted Installation Requirements Two mounting brackets.

Eight M3 flat head screws and a #2 Philips screwdriver.

Four M5 flat head screws and a #2 Philips screwdriver.

Failure to use the proper screws may damage the unit.

2.3.1.1 Precautions Make sure the rack will safely support the combined weight of all the equipment it contains.

Chapter 2 Hardware Installation and Connection


Make sure the position of the Switch does not make the rack unstable or top-heavy. Take all necessary precautions to anchor the rack securely before installing the unit.

2.3.2 Attaching the Mounting Brackets to the Switch

1 Position a mounting bracket on one side of the Switch, lining up the four screw holes on the bracket with the screw holes on the side of the Switch.

Figure 5 Attaching the Mounting Brackets

2 Using a #2 Philips screwdriver, install the M3 flat head screws through the mounting bracket holes into the Switch.

3 Repeat steps 1 and 2 to install the second mounting bracket on the other side of the Switch.

4 You may now mount the Switch on a rack. Proceed to the next section.

2.3.3 Mounting the Switch on a Rack

1 Position a mounting bracket (that is already attached to the Switch) on one side of the rack, lining up the two screw holes on the bracket with the screw holes on the side of the rack.

Chapter 2 Hardware Installation and Connection


Figure 6 Mounting the Switch on a Rack

2 Using a #2 Philips screwdriver, install the M5 flat head screws through the mounting bracket holes into the rack.

3 Repeat steps 1 and 2 to attach the second mounting bracket on the other side of the rack.


CHAPTER 3

Hardware Panels

This chapter describes the front panel and rear panel of the Switch and shows you how to make the hardware connections.

3.1 Front PanelThe following figures show the front panels of the Switch. See Section 3.3 on page 31 for information on the LEDs.

Figure 7 Front Panel: GS1920-24

Figure 8 Front Panel: GS1920-24HP

Figure 9 Front Panel: GS1920-48

Figure 10 Front Panel: GS1920-48HP

3.1.1 Gigabit Ethernet Ports

The Switch has 1000Base-T auto-negotiating, auto-crossover Ethernet ports. In 10/100/1000 Mbps Gigabit, the speed can be 10 Mbps, 100 Mbps or 1000 Mbps and the duplex mode can be half duplex or full duplex.

An auto-negotiating port can detect and adjust to the optimum Ethernet speed (10/100/1000 Mbps) and duplex mode (full duplex or half duplex) of the connected device.

An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover Ethernet cable.

Chapter 3 Hardware Panels


Four 1000Base-T Ethernet ports are paired with a mini-GBIC slot to create a dual personality interface. The Switch uses up to one connection for each mini-GBIC and 1000Base-T Ethernet pair. The mini-GBIC slots have priority over the Gigabit ports. This means that if a mini-GBIC slot and the corresponding GbE port are connected at the same time, the GbE port will be disabled.

Note: The dual personality ports change to fiber mode directly when inserting the fiber module.

When auto-negotiation is turned on, an Ethernet port negotiates with the peer automatically to determine the connection speed and duplex mode. If the peer Ethernet port does not support auto-negotiation or turns off this feature, the Switch determines the connection speed by detecting the signal on the cable and using half duplex mode. When the Switchs auto-negotiation is turned off, an Ethernet port uses the pre-configured speed and duplex mode when making a connection, thus requiring you to make sure that the settings of the peer Ethernet port are the same in order to connect.

3.1.1.1 Default Ethernet Negotiation Settings

The factory default negotiation settings for the Gigabit ports on the Switch are:

Speed: Auto

Duplex: Auto

Flow control: Off

Link Aggregation: Disabled

3.1.1.2 Auto-crossover

All ports are auto-crossover, that is auto-MDIX ports (Media Dependent Interface Crossover), so you may use either a straight-through Ethernet cable or crossover Ethernet cable for all Gigabit port connections. Auto-crossover ports automatically sense whether they need to function as crossover or straight ports, so crossover cables can connect both computers and switches/hubs.

3.1.2 Mini-GBIC Slots

These are slots for mini-GBIC (Gigabit Interface Converter) transceivers. A transceiver is a single unit that houses a transmitter and a receiver. The Switch does not come with transceivers. You must use transceivers that comply with the Small Form-factor Pluggable (SFP) Transceiver MultiSource Agreement (MSA). See the SFF committees INF-8074i specification Rev 1.0 for details.

You can change transceivers while the Switch is operating. You can use different transceivers to connect to Ethernet switches with different types of fiber-optic or even copper cable connectors.

To avoid possible eye injury, do not look into an operating fiber-optic modules connectors.

Type: SFP connection interface

Connection speed: 1 Gigabit per second (Gbps)

3.1.2.1 Transceiver Installation

Use the following steps to install a mini-GBIC transceiver (SFP module).



1 Insert the transceiver into the slot with the exposed section of PCB board facing down.

2 Press the transceiver firmly until it clicks into place.

3 The Switch automatically detects the installed transceiver. Check the LEDs to verify that it is functioning properly.

4 Close the transceivers latch (latch styles vary).

5 Connect the fiber optic cables to the transceiver.

Figure 11 Transceiver Installation Example

Figure 12 Connecting the Fiber Optic Cables

3.1.2.2 Transceiver Removal

Use the following steps to remove a mini-GBIC transceiver (SFP module).

1 Remove the fiber optic cables from the transceiver.

2 Open the transceivers latch (latch styles vary).

3 Pull the transceiver out of the slot.

Figure 13 Removing the Fiber Optic Cables

Figure 14 Opening the Transceivers Latch Example



Figure 15 Transceiver Removal Example

3.1.3 LED Mode (only available for GS1920-48HP)

After you push this button (see Section Figure 10 on page 27) to active PoE on the Switch, view the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting (see Section 3.3 on page 31).

3.2 Rear PanelThe following figures show the rear panels of the Switch.

Figure 16 Rear panel: GS1920-24

Figure 17 Rear Panel: GS1920-24HP

Figure 18 Rear Panel: GS1920-48

Figure 19 Rear Panel: GS1920-48HP

3.2.1 Power Connector

Note: Make sure you are using the correct power source as shown on the panel.

To connect power to the Switch, insert the female end of the power cord to the AC power receptacle on the rear panel. Connect the other end of the supplied power cord to a power outlet. Make sure that no objects obstruct the airflow of the fans (located on the side of the unit).



3.3 LEDs After you connect the power to the Switch, view the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting.

3.4 Reset to Factory DefaultsIf you forget your password or cannot access the Web Configurator, you will need to use the Reset button at the side of the device to reload the factory-default configuration file. This means that you will lose all configurations that you had previously and the default Switch IP address, user name and password will be reset to 192.168.1.1, admin and 1234 respectively.

Table 3 LED DescriptionsLED COLOR STATUS DESCRIPTIONPoE

(GS1920-48HP only)

Green On Each Ethernet ports LED is changed to act as a PoE LED by using the LED MODE button on the front panel.

Off Each Ethernet ports LED is changed back to act as a LNK/ACT LED by releasing the LED MODE button on the front panel.

PWR Green On The system is turned on.

Off The system is off or has failed.

SYS Green On The system is on and functioning properly.

Blinking The system is rebooting and performing self-diagnostic tests.

Off The power is off or the system is not ready/malfunctioning.

ALM Red On A hardware failure is detected.

Off The system is functioning normally.

LOCATOR Blue Blinking Shows the actual location of the Switch between several devices in a rack.

Ethernet Ports

1-24 (GS1920-24/24HP) and 1-48 (GS1920-48/48HP)

LNK/ACT

Green Blinking The system is transmitting/receiving to/from a 10 Mbps or a 1000 Mbps Ethernet network.

On The link to a 10 Mbps or a 1000 Mbps Ethernet network is up.

Amber Blinking The system is transmitting/receiving to/from a 100 Mbps Ethernet network.

On The link to a 100 Mbps Ethernet network is up.

Off The link to an Ethernet network is down.

PoE

(GS1920-24HP and GS1920-48HP only)

Green On Power supplied to all PoE Ethernet ports meets the IEEE 802.3at standard.

Amber On Power supplied to all PoE Ethernet ports meets the IEEE 802.3af standard.

Off There is no power supplied.

Mini-GBIC Slots

45-50

SFP

Green On The uplink port is linking at 1000 Mbps.

Blinking The system activity is transmitting/receiving data 1000 Mbps.

Amber On The uplink port is linking at 100 Mbps.

Blinking The system activity is transmitting/receiving data 100 Mbps.

Off There is no link or port, the uplink port is shut down.



If you backed up an earlier configuration file as advised in Section 1.3 on page 22, you will not have to totally re-configure the Switch after resetting. You can simply restore your last configuration.

Follow the steps below to reset the Switch back to factory defaults.

1 Make sure the SYS LED is steady green (not blinking). Use a pointed instrument such as a pin to access the Reset button on the side of the Switch as shown in Section 3.4.1 on page 32.

2 Press the button for more than five seconds until the SYS LED begins to blink and then release it. Wait for the Switch to restart (the SYS LED will be steady green again). This takes up to two minutes.

Note: If you want to access the Switch web configurator again, you may need to change the IP address of your computer to be in the same subnet as that of the default Switch IP address (192.168.1.1).

3.4.1 Side Panels

The reset button is located at the side of the Switch as shown.

Figure 20 Side Panel: GS1920-48

Figure 21 Side Panel: GS1920-24, GS1920-24HP, GS1920-48HP

33

PART IITechnical Reference


CHAPTER 4

The Web Configurator

4.1 OverviewThis section introduces the configuration and functions of the web configurator.

The web configurator is an HTML-based management interface that allows easy Switch setup and management via Internet browser. Use Internet Explorer 6.0 and later, Netscape Navigator 7.0 and later, Mozilla Firefox 3.0 and later versions. The recommended screen resolution is 1024 by 768 pixels.

In order to use the web configurator you need to allow:

Web browser pop-up windows from your device. Web pop-up blocking is enabled by default in Windows XP SP (Service Pack) 2.

JavaScript (enabled by default).

Java permissions (enabled by default).

4.2 System Login

1 Start your web browser.

2 Type http:// and the IP address of the Switch (for example, the default management IP address is 192.168.1.1) in the Location or Address field. Press [ENTER].

3 The login screen appears. The default username is admin and associated default password is 1234. The date and time display as shown if you have not configured a time server nor manually entered a time and date in the General Setup screen.

Chapter 4 The Web Configurator


Figure 22 Web Configurator: Login

4 Click OK to view the first web configurator screen.

4.3 The Status Screen The Status screen is the first screen that displays when you access the web configurator.

This guide uses PoE model(s) screens as an example. The screens may very slightly for different models.

The following figure shows the navigating components of a web configurator screen.

Figure 23 Web Configurator Home Screen for PoE model(s) (Status)

A - Click the menu items to open submenu links, and then click on a submenu link to open the screen in the main window.

B, C, D, E - These are quick links which allow you to perform certain tasks no matter which screen you are currently working in.

A

B C D E



B - Click this link to save your configuration into the Switchs nonvolatile memory. Nonvolatile memory is the configuration of your Switch that stays the same even if the Switchs power is turned off.

C - Click this link to go to the status page of the Switch.

D - Click this link to logout of the web configurator.

E - Click this link to display web help pages. The help pages provide descriptions for all of the configuration screens.

In the navigation panel, click a main link to reveal a list of submenu links.

The following table describes the links in the navigation panel.

Table 4 Navigation Panel Sub-links Overview BASIC SETTING ADVANCED APPLICATION IP APPLICATION MANAGEMENTPoE model(s)

Table 5 Navigation Panel Links LINK DESCRIPTION Basic Settings

System Info This link takes you to a screen that displays general system information.

General Setup This link takes you to a screen where you can configure general identification information about the Switch.

Switch Setup This link takes you to a screen where you can set up global Switch parameters such as VLAN type, GARP and priority queues.



IP Setup This link takes you to a screen where you can configure the IP address, subnet mask (necessary for Switch management) and DNS (domain name server) and set up to 64 IP routing domains.

Port Setup This link takes you to a screen where you can configure settings for individual Switch ports.

PoE Setup For PoE model(s)

This link takes you to a screen where you can set priorities so that the Switch is able to reserve and allocate power to certain PDs.

Interface Setup This link takes you to a screen where you can configure settings for individual interface type and ID.

IPv6 This link takes you to a screen where you can view IPv6 status and configure IPv6 settings.

Advanced Application

VLAN This link takes you to screens where you can configure port-based or 802.1Q VLAN (depending on what you configured in the Switch Setup menu). You can also configure a protocol based VLAN or a subnet based VLAN in these screens.

Static MAC Forwarding

This link takes you to a screen where you can configure static MAC addresses for a port. These static MAC addresses do not age out.

Static Multicast Forwarding

This link takes you to a screen where you can configure static multicast MAC addresses for port(s). These static multicast MAC addresses do not age out.

Filtering This link takes you to a screen to set up filtering rules.

Spanning Tree Protocol

This link takes you to screens where you can configure the RSTP/MRSTP/MSTP to prevent network loops.

Bandwidth Control

This link takes you to a screen where you can configure bandwidth limits on the Switch.

Broadcast Storm Control

This link takes you to a screen to set up broadcast filters.

Mirroring This link takes you to screens where you can copy traffic from one port or ports to another port in order that you can examine the traffic from the first port without interference.

Link Aggregation This link takes you to screens where you can logically aggregate physical links to form one logical, higher-bandwidth link.

Port Authentication

This link takes you to a screen where you can configure IEEE 802.1x port authentication for clients communicating via the Switch.

Port Security This link takes you to screens where you can activate MAC address learning and set the maximum number of MAC addresses to learn on a port.

Classifier This link takes you to a screen where you can configure the Switch to group packets based on the specified criteria.

Policy Rule This link takes you to a screen where you can configure the Switch to perform special treatment on the grouped packets.

Queuing Method This link takes you to a screen where you can configure queuing with associated queue weights for each port.

Multicast This link takes you to screens where you can configure various multicast features, IGMP snooping and create multicast VLANs.

AAA This link takes you to a screen where you can configure authentication, authorization services via external servers. The external servers can be either RADIUS (Remote Authentication Dial-In User Service) or TACACS+ (Terminal Access Controller Access-Control System Plus).

IP Source Guard This link takes you to screens where you can configure filtering of unauthorized DHCP and ARP packets in your network.

Loop Guard This link takes you to a screen where you can configure protection against network loops that occur on the edge of your network.

Table 5 Navigation Panel Links (continued)LINK DESCRIPTION

Chapter 4 The Web Configura

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