ZyXEL Communications GS1920 Series User manual

Quick Start Guide
www.zyxel.com
GS1920 Series
Intelligent Layer 2 GbE Switch
Version 4.10
Edition 1, 11/2013
Copyright © 2013 ZyXEL Communications Corporation
User’s Guide
Default Login Details
IP Address https://192.168.1.1
User Name admin
Password 1234

GS1920 Series User’s Guide2
IMPORTANT!
READ CAREFULLY BEFORE USE.
KEEP THIS GUIDE FOR FUTURE REFERENCE.
This is a User’s 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 User’s Guide 3
Contents Overview
User’s Guide .......................................................................................................................................17
Getting to Know Your Switch ...................................................................................................................19
Hardware Installation and Connection ....................................................................................................23
Hardware Panels .....................................................................................................................................26
Technical Reference ..........................................................................................................................32
The Web Configurator .............................................................................................................................34
Initial Setup Example ..............................................................................................................................41
Tutorials ..................................................................................................................................................45
System Status and Port Status ................................................................................................................53
Basic Setting ..........................................................................................................................................58
VLAN .......................................................................................................................................................84
Static MAC Forward Setup ....................................................................................................................100
Static Multicast Forward Setup ..............................................................................................................102
Filtering ..............................................................................................................................................105
Spanning Tree Protocol .........................................................................................................................107
Bandwidth Control .................................................................................................................................126
Broadcast Storm Control .......................................................................................................................128
Mirroring ................................................................................................................................................130
Link Aggregation ...................................................................................................................................132
Port Authentication ................................................................................................................................139
Port Security ..........................................................................................................................................145
Classifier ...............................................................................................................................................148
Policy Rule ...........................................................................................................................................153
Queuing Method ....................................................................................................................................157
Multicast ................................................................................................................................................160
AAA .......................................................................................................................................................174
IP Source Guard ...................................................................................................................................185
Loop Guard ...........................................................................................................................................208
Layer 2 Protocol Tunneling ...................................................................................................................212
PPPoE ...................................................................................................................................................216
Error Disable .........................................................................................................................................225
Green Ethernet ......................................................................................................................................231
Link Layer Discovery Protocol (LLDP) ..................................................................................................233
Static Route ..........................................................................................................................................257
Differentiated Services .......................................................................................................................260
DHCP ...................................................................................................................................................264
ARP Setup ............................................................................................................................................278

Contents Overview
GS1920 Series User’s Guide
4
Maintenance ..........................................................................................................................................282
Access Control ......................................................................................................................................289
Diagnostic ............................................................................................................................................. 311
Syslog ...................................................................................................................................................313
Cluster Management .............................................................................................................................316
MAC Table .............................................................................................................................................322
ARP Table .............................................................................................................................................325
Path MTU Table ....................................................................................................................................327
Configure Clone ....................................................................................................................................328
Neighbor Table ......................................................................................................................................331
Troubleshooting ....................................................................................................................................333

Table of Contents
GS1920 Series User’s Guide 5
Table of Contents
Contents Overview ...............................................................................................................................3
Table of Contents .................................................................................................................................5
Part I: User’s Guide .........................................................................................17
Chapter 1
Getting to Know Your Switch.............................................................................................................19
1.1 Introduction .......................................................................................................................................19
1.1.1 Backbone Application ..............................................................................................................19
1.1.2 Bridging Example ....................................................................................................................20
1.1.3 High Performance Switching Example ....................................................................................20
1.1.4 IEEE 802.1Q VLAN Application Examples ..............................................................................21
1.2 Ways to Manage the Switch ..............................................................................................................22
1.3 Good Habits for Managing the Switch ...............................................................................................22
Chapter 2
Hardware Installation and Connection .............................................................................................23
2.1 Installation Scenarios ........................................................................................................................23
2.2 Desktop Installation Procedure ........................................................................................................23
2.3 Mounting the Switch on a Rack ........................................................................................................23
2.3.1 Rack-mounted Installation Requirements ................................................................................23
2.3.2 Attaching the Mounting Brackets to the Switch .......................................................................24
2.3.3 Mounting the Switch on a Rack ...............................................................................................24
Chapter 3
Hardware Panels.................................................................................................................................26
3.1 Front Panel ........................................................................................................................................26
3.1.1 Gigabit Ethernet Ports ............................................................................................................26
3.1.2 Mini-GBIC Slots .......................................................................................................................27
3.1.3 LED Mode (only available for GS1920-48HP) .........................................................................29
3.2 Rear Panel ........................................................................................................................................29
3.2.1 Power Connector .....................................................................................................................29
3.3 LEDs ...............................................................................................................................................29
3.4 Reset to Factory Defaults ..................................................................................................................30
3.4.1 Side Panels .............................................................................................................................31

Table of Contents
GS1920 Series User’s Guide
6
Part II: Technical Reference............................................................................32
Chapter 4
The Web Configurator........................................................................................................................34
4.1 Overview ...........................................................................................................................................34
4.2 System Login .................................................................................................................................34
4.3 The Status Screen ........................................................................................................................35
4.3.1 Change Your Password ........................................................................................................38
4.4 Saving Your Configuration ................................................................................................................39
4.5 Switch Lockout ................................................................................................................................39
4.6 Resetting the Switch ......................................................................................................................40
4.7 Logging Out of the Web Configurator ..............................................................................................40
4.8 Help ..................................................................................................................................................40
Chapter 5
Initial Setup Example..........................................................................................................................41
5.1 Overview ...........................................................................................................................................41
5.1.1 Creating a VLAN ......................................................................................................................41
5.1.2 Setting Port VID .......................................................................................................................42
5.2 Configuring Switch Management IP Address ....................................................................................43
Chapter 6
Tutorials...............................................................................................................................................45
6.1 Overview ...........................................................................................................................................45
6.2 How to Use DHCP Snooping on the Switch ......................................................................................45
6.3 How to Use DHCP Relay on the Switch ............................................................................................48
6.3.1 DHCP Relay Tutorial Introduction ............................................................................................48
6.3.2 Creating a VLAN ......................................................................................................................49
6.3.3 Configuring DHCP Relay .........................................................................................................51
6.3.4 Troubleshooting .......................................................................................................................52
Chapter 7
System Status and Port Status..........................................................................................................53
7.1 Overview ...........................................................................................................................................53
7.1.1 What You Can Do ....................................................................................................................53
7.2 Port Status Summary ...................................................................................................................53
7.2.1 Status: Port Details .............................................................................................................54
Chapter 8
Basic Setting ......................................................................................................................................58
8.1 Overview ...........................................................................................................................................58
8.1.1 What You Can Do ....................................................................................................................58
8.2 System Information ........................................................................................................................58

Table of Contents
GS1920 Series User’s Guide 7
8.3 General Setup ...............................................................................................................................60
8.4 Introduction to VLANs ......................................................................................................................62
8.5 Switch Setup Screen ......................................................................................................................63
8.6 IP Setup ...........................................................................................................................................64
8.6.1 Management IP Addresses .....................................................................................................64
8.7 Port Setup ........................................................................................................................................66
8.8 PoE Status .......................................................................................................................................68
8.8.1 PoE Setup ..............................................................................................................................70
8.9 Interface Setup ..................................................................................................................................71
8.10 IPv6 .................................................................................................................................................72
8.10.1 IPv6 Interface Status .............................................................................................................73
8.10.2 IPv6 Configuration .................................................................................................................76
8.10.3 IPv6 Global Setup ..................................................................................................................76
8.10.4 IPv6 Interface Setup ..............................................................................................................77
8.10.5 IPv6 Link-Local Address Setup .............................................................................................78
8.10.6 IPv6 Global Address Setup ...................................................................................................79
8.10.7 IPv6 Neighbor Discovery Setup .............................................................................................80
8.10.8 IPv6 Neighbor Setup .............................................................................................................81
8.10.9 DHCPv6 Client Setup ............................................................................................................82
Chapter 9
VLAN....................................................................................................................................................84
9.1 Overview ...........................................................................................................................................84
9.1.1 What You Can Do ....................................................................................................................84
9.1.2 What You Need to Know ..........................................................................................................84
9.2 VLAN Status .....................................................................................................................................87
9.2.1 VLAN Details ..........................................................................................................................88
9.3 Configure a Static VLAN ...............................................................................................................88
9.4 Configure VLAN Port Settings .......................................................................................................90
9.5 Subnet Based VLANs ......................................................................................................................91
9.5.1 Configuring Subnet Based VLAN ..........................................................................................92
9.6 Protocol Based VLANs .....................................................................................................................93
9.6.1 Configuring Protocol Based VLAN ........................................................................................94
9.7 Port-based VLAN Setup ...............................................................................................................95
9.7.1 Configure a Port-based VLAN ................................................................................................96
9.8 Technical Reference ..........................................................................................................................98
9.8.1 Create an IP-based VLAN Example ........................................................................................98
Chapter 10
Static MAC Forward Setup...............................................................................................................100
10.1 Overview .......................................................................................................................................100
10.1.1 What You Can Do ................................................................................................................100
10.2 Configuring Static MAC Forwarding .........................................................................................100

Table of Contents
GS1920 Series User’s Guide
8
Chapter 11
Static Multicast Forward Setup .......................................................................................................102
11.1 Static Multicast Forward Setup Overview .....................................................................................102
11.1.1 What You Can Do ................................................................................................................102
11.1.2 What You Need To Know .....................................................................................................102
11.2 Configuring Static Multicast Forwarding ........................................................................................103
Chapter 12
Filtering...........................................................................................................................................105
12.1 Filtering Overview ........................................................................................................................105
12.1.1 What You Can Do ................................................................................................................105
12.2 Configure a Filtering Rule ............................................................................................................105
Chapter 13
Spanning Tree Protocol....................................................................................................................107
13.1 Spanning Tree Protocol Overview .................................................................................................107
13.1.1 What You Can Do ................................................................................................................107
13.1.2 What You Need to Know ......................................................................................................107
13.2 Spanning Tree Protocol Status Screen ......................................................................................... 110
13.3 Spanning Tree Configuration ....................................................................................................... 110
13.4 Configure Rapid Spanning Tree Protocol ................................................................................... 111
13.5 Rapid Spanning Tree Protocol Status ..................................................................................... 113
13.6 Configure Multiple Rapid Spanning Tree Protocol ..................................................................... 114
13.7 Multiple Rapid Spanning Tree Protocol Status ........................................................................116
13.8 Configure Multiple Spanning Tree Protocol ................................................................................ 117
13.9 Multiple Spanning Tree Port Configuration ...................................................................................120
13.10 Multiple Spanning Tree Protocol Status ................................................................................121
13.11 Technical Reference ....................................................................................................................123
13.11.1 MSTP Network Example ....................................................................................................123
13.11.2 MST Region .......................................................................................................................124
13.11.3 MST Instance .....................................................................................................................125
13.11.4 Common and Internal Spanning Tree (CIST) ....................................................................125
Chapter 14
Bandwidth Control............................................................................................................................126
14.1 Overview ......................................................................................................................................126
14.1.1 What You Can Do ................................................................................................................126
14.2 Bandwidth Control Setup ..............................................................................................................126
Chapter 15
Broadcast Storm Control.................................................................................................................128
15.1 Broadcast Storm Control Overview ..............................................................................................128
15.1.1 What You Can Do ................................................................................................................128

Table of Contents
GS1920 Series User’s Guide 9
15.2 Broadcast Storm Control Setup .....................................................................................................128
Chapter 16
Mirroring............................................................................................................................................130
16.1 Mirroring Overview .......................................................................................................................130
16.1.1 What You Can Do ................................................................................................................130
16.2 Port Mirroring Setup ......................................................................................................................130
Chapter 17
Link Aggregation ..............................................................................................................................132
17.1 Overview ......................................................................................................................................132
17.1.1 What You Can Do ................................................................................................................132
17.1.2 What You Need to Know ......................................................................................................132
17.2 Link Aggregation Status ................................................................................................................133
17.3 Link Aggregation Setting .............................................................................................................134
17.4 Link Aggregation Control Protocol .............................................................................................136
17.5 Technical Reference ......................................................................................................................137
17.5.1 Static Trunking Example ......................................................................................................137
Chapter 18
Port Authentication ..........................................................................................................................139
18.1 Port Authentication Overview .......................................................................................................139
18.1.1 What You Can Do ................................................................................................................139
18.1.2 What You Need to Know ......................................................................................................139
18.2 Port Authentication Configuration .................................................................................................140
18.3 Activate IEEE 802.1x Security ..................................................................................................140
18.3.1 Guest VLAN ........................................................................................................................142
Chapter 19
Port Security .....................................................................................................................................145
19.1 Port Security Overview .................................................................................................................145
19.1.1 What You Can Do ................................................................................................................145
19.2 Port Security Setup .......................................................................................................................145
Chapter 20
Classifier............................................................................................................................................148
20.1 Overview .......................................................................................................................................148
20.1.1 What You Can Do ................................................................................................................148
20.1.2 What You Need to Know ......................................................................................................148
20.2 Configuring the Classifier .............................................................................................................148
20.2.1 Viewing and Editing Classifier Configuration ......................................................................150
20.3 Classifier Example ........................................................................................................................152

Table of Contents
GS1920 Series User’s Guide
10
Chapter 21
Policy Rule .......................................................................................................................................153
21.1 Policy Rules Overview .................................................................................................................153
21.1.1 What You Can Do ................................................................................................................153
21.2 Configuring Policy Rules ...............................................................................................................153
21.2.1 Viewing and Editing Policy Configuration ...........................................................................156
21.3 Policy Example ..............................................................................................................................156
Chapter 22
Queuing Method ...............................................................................................................................157
22.1 Queuing Method Overview ............................................................................................................157
22.1.1 What You Can Do ................................................................................................................157
22.1.2 What You Need to Know ......................................................................................................157
22.2 Configuring Queuing .....................................................................................................................158
Chapter 23
Multicast ............................................................................................................................................160
23.1 Multicast Overview ........................................................................................................................160
23.1.1 What You Can Do ................................................................................................................160
23.1.2 What You Need to Know ......................................................................................................160
23.2 Multicast Setup ..............................................................................................................................162
23.3 IPv4 Multicast Status ....................................................................................................................163
23.3.1 IGMP Snooping ..................................................................................................................163
23.4 IGMP Snooping VLAN .................................................................................................................166
23.4.1 IGMP Filtering Profile .........................................................................................................167
23.5 General MVR Configuration .........................................................................................................169
23.5.1 MVR Group Configuration ..................................................................................................170
23.5.2 MVR Configuration Example ...............................................................................................172
Chapter 24
AAA....................................................................................................................................................174
24.1 AAA Overview ...............................................................................................................................174
24.1.1 What You Can Do ................................................................................................................174
24.1.2 What You Need to Know ......................................................................................................174
24.2 AAA Screens .................................................................................................................................175
24.3 RADIUS Server Setup ...............................................................................................................175
24.4 TACACS+ Server Setup ............................................................................................................177
24.5 AAA Setup ....................................................................................................................................179
24.6 Technical Reference ......................................................................................................................181
24.6.1 Vendor Specific Attribute .....................................................................................................181
24.6.2 Supported RADIUS Attributes .............................................................................................183
24.6.3 Attributes Used for Authentication .......................................................................................183

Table of Contents
GS1920 Series User’s Guide 11
Chapter 25
IP Source Guard................................................................................................................................185
25.1 Overview .......................................................................................................................................185
25.1.1 What You Can Do ................................................................................................................185
25.1.2 What You Need to Know ......................................................................................................186
25.2 IP Source Guard ..........................................................................................................................186
25.3 IP Source Guard Static Binding ....................................................................................................187
25.4 DHCP Snooping ...........................................................................................................................188
25.5 DHCP Snooping Configure ..........................................................................................................191
25.5.1 DHCP Snooping Port Configure .........................................................................................193
25.5.2 DHCP Snooping VLAN Configure ......................................................................................194
25.5.3 DHCP Snooping VLAN Port Configure ................................................................................195
25.6 ARP Inspection Status .................................................................................................................196
25.7 ARP Inspection VLAN Status ........................................................................................................197
25.8 ARP Inspection Log Status ...........................................................................................................198
25.9 ARP Inspection Configure .............................................................................................................200
25.9.1 ARP Inspection Port Configure ............................................................................................201
25.9.2 ARP Inspection VLAN Configure .........................................................................................203
25.10 Technical Reference ....................................................................................................................204
25.10.1 DHCP Snooping Overview ................................................................................................204
25.10.2 ARP Inspection Overview ..................................................................................................206
Chapter 26
Loop Guard .......................................................................................................................................208
26.1 Loop Guard Overview ..................................................................................................................208
26.1.1 What You Can Do ................................................................................................................208
26.1.2 What You Need to Know ......................................................................................................208
26.2 Loop Guard Setup .........................................................................................................................210
Chapter 27
Layer 2 Protocol Tunneling..............................................................................................................212
27.1 Layer 2 Protocol Tunneling Overview ..........................................................................................212
27.1.1 What You Can Do ................................................................................................................212
27.1.2 What You Need to Know ......................................................................................................212
27.2 Configuring Layer 2 Protocol Tunneling ........................................................................................213
Chapter 28
PPPoE................................................................................................................................................216
28.1 PPPoE Intermediate Agent Overview ...........................................................................................216
28.1.1 What You Can Do ................................................................................................................216
28.1.2 What You Need to Know ......................................................................................................216
28.2 The PPPoE Screen .......................................................................................................................219
28.3 PPPoE Intermediate Agent ..........................................................................................................219

Table of Contents
GS1920 Series User’s Guide
12
28.3.1 PPPoE IA Per-Port .............................................................................................................220
28.3.2 PPPoE IA Per-Port Per-VLAN ............................................................................................222
28.3.3 PPPoE IA for VLAN ............................................................................................................223
Chapter 29
Error Disable .....................................................................................................................................225
29.1 Error Disable Overview .................................................................................................................225
29.2 The Error Disable Screens Overview ............................................................................................225
29.3 Error-Disable Status .....................................................................................................................225
29.4 CPU Protection Configuration ......................................................................................................227
29.5 Error-Disable Detect Configuration ..............................................................................................228
29.6 Error-Disable Recovery Configuration .........................................................................................229
Chapter 30
Green Ethernet..................................................................................................................................231
30.1 Green Ethernet Overview .............................................................................................................231
30.2 Configuring Green Ethernet ..........................................................................................................231
Chapter 31
Link Layer Discovery Protocol (LLDP)...........................................................................................233
31.1 LLDP Overview .............................................................................................................................233
31.2 LLDP-MED Overview ....................................................................................................................234
31.3 LLDP Screens ...............................................................................................................................235
31.4 LLDP Local Status ........................................................................................................................236
31.4.1 LLDP Local Port Status Detail ............................................................................................237
31.5 LLDP Remote Status ....................................................................................................................241
31.5.1 LLDP Remote Port Status Detail ........................................................................................242
31.6 LLDP Configuration ......................................................................................................................248
31.6.1 LLDP Configuration Basic TLV Setting ...............................................................................250
31.6.2 LLDP Configuraion Basic Org-specific TLV Setting ............................................................251
31.7 LLDP-MED Configuration .............................................................................................................252
31.8 LLDP-MED Network Policy .........................................................................................................253
31.9 LLDP-MED Location ...................................................................................................................254
Chapter 32
Static Route......................................................................................................................................257
32.1 Static Route Overview ..................................................................................................................257
32.1.1 What You Can Do ................................................................................................................257
32.2 Static Routing ................................................................................................................................257
32.3 Configuring Static Routing ..........................................................................................................257
Chapter 33
Differentiated Services..................................................................................................................260

Table of Contents
GS1920 Series User’s Guide 13
33.1 Differentiated Services Overview .................................................................................................260
33.1.1 What You Can Do ................................................................................................................260
33.1.2 What You Need to Know ......................................................................................................260
33.2 Activating DiffServ ........................................................................................................................261
33.3 DSCP-to-IEEE 802.1p Priority Settings ......................................................................................262
33.3.1 Configuring DSCP Settings .................................................................................................263
Chapter 34
DHCP.................................................................................................................................................264
34.1 DHCP Overview ............................................................................................................................264
34.1.1 What You Can Do ................................................................................................................264
34.1.2 What You Need to Know ......................................................................................................264
34.2 DHCP Configuration ......................................................................................................................265
34.3 DHCPv4 Status ............................................................................................................................266
34.4 DHCPv4 Relay .............................................................................................................................266
34.4.1 DHCPv4 Relay Agent Information .......................................................................................266
34.4.2 DHCPv4 Option 82 Profile ...................................................................................................267
34.4.3 Configuring DHCPv4 Global Relay ......................................................................................269
34.4.4 DHCPv4 Global Relay Port Configure ................................................................................270
34.4.5 Global DHCP Relay Configuration Example .......................................................................271
34.5 Configuring DHCPv4 VLAN Settings .........................................................................................272
34.5.1 DHCPv4 VLAN Port Configure ...........................................................................................274
34.5.2 Example: DHCP Relay for Two VLANs ...............................................................................275
34.6 DHCPv6 Relay ..............................................................................................................................276
Chapter 35
ARP Setup .........................................................................................................................................278
35.1 ARP Overview ..............................................................................................................................278
35.1.1 What You Can Do ................................................................................................................278
35.1.2 What You Need to Know ......................................................................................................278
35.2 ARP Setup ....................................................................................................................................280
35.2.1 ARP Learning .....................................................................................................................280
Chapter 36
Maintenance......................................................................................................................................282
36.1 Overview .......................................................................................................................................282
36.1.1 What You Can Do ................................................................................................................282
36.2 The Maintenance Screen ............................................................................................................282
36.2.1 Load Factory Default ..........................................................................................................283
36.2.2 Save Configuration ..............................................................................................................283
36.2.3 Reboot System ....................................................................................................................284
36.3 Firmware Upgrade .....................................................................................................................284
36.4 Restore a Configuration File ......................................................................................................285

Table of Contents
GS1920 Series User’s Guide
14
36.5 Backup a Configuration File .......................................................................................................286
36.6 Technical Reference ......................................................................................................................287
36.6.1 FTP Command Line ............................................................................................................287
36.6.2 Filename Conventions ........................................................................................................287
36.6.3 FTP Command Line Procedure ..........................................................................................287
36.6.4 GUI-based FTP Clients ........................................................................................................288
36.6.5 FTP Restrictions .................................................................................................................288
Chapter 37
Access Control .................................................................................................................................289
37.1 Access Control Overview ............................................................................................................289
37.1.1 What You Can Do ................................................................................................................289
37.2 The Access Control Main Screen ..................................................................................................289
37.3 Configuring SNMP ....................................................................................................................290
37.3.1 Configuring SNMP Trap Group .........................................................................................291
37.3.2 Enabling/Disabling Sending of SNMP Traps on a Port ........................................................292
37.3.3 Configuring SNMP User ...................................................................................................293
37.4 Setting Up Login Accounts ..........................................................................................................295
37.5 Service Port Access Control .......................................................................................................296
37.6 Remote Management ..............................................................................................................297
37.7 Technical Reference ......................................................................................................................299
37.7.1 About SNMP ......................................................................................................................299
37.7.2 Introduction to HTTPS .........................................................................................................305
Chapter 38
Diagnostic .........................................................................................................................................311
38.1 Overview ....................................................................................................................................... 311
38.2 Diagnostic .................................................................................................................................... 311
Chapter 39
Syslog................................................................................................................................................313
39.1 Syslog Overview ...........................................................................................................................313
39.1.1 What You Can Do ................................................................................................................313
39.2 Syslog Setup .................................................................................................................................313
39.3 Syslog Server Setup ....................................................................................................................314
Chapter 40
Cluster Management ........................................................................................................................316
40.1 Cluster Management Overview ....................................................................................................316
40.1.1 What You Can Do ................................................................................................................317
40.2 Cluster Management Status ..........................................................................................................317
40.3 Clustering Management Configuration ........................................................................................318
40.4 Technical Reference ......................................................................................................................320

Table of Contents
GS1920 Series User’s Guide 15
40.4.1 Cluster Member Switch Management ................................................................................320
Chapter 41
MAC Table .........................................................................................................................................322
41.1 MAC Table Overview ....................................................................................................................322
41.1.1 What You Can Do ................................................................................................................322
41.1.2 What You Need to Know ......................................................................................................322
41.2 Viewing the MAC Table ................................................................................................................323
Chapter 42
ARP Table..........................................................................................................................................325
42.1 Overview .......................................................................................................................................325
42.1.1 What You Can Do ................................................................................................................325
42.1.2 What You Need to Know ......................................................................................................325
42.2 Viewing the ARP Table ..................................................................................................................325
Chapter 43
Path MTU Table.................................................................................................................................327
43.1 Path MTU Overview .....................................................................................................................327
43.2 Viewing the Path MTU Table .........................................................................................................327
Chapter 44
Configure Clone................................................................................................................................328
44.1 Overview .......................................................................................................................................328
44.2 Configure Clone ...........................................................................................................................328
Chapter 45
Neighbor Table..................................................................................................................................331
45.1 IPv6 Neighbor Table Overview .....................................................................................................331
45.2 Viewing the IPv6 Neighbor Table ..................................................................................................331
Chapter 46
Troubleshooting................................................................................................................................333
46.1 Power, Hardware Connections, and LEDs ....................................................................................333
46.2 Switch Access and Login ..............................................................................................................334
46.3 Switch Configuration .....................................................................................................................336
Appendix A Customer Support ........................................................................................................338
Appendix B Common Services ........................................................................................................344
Appendix C IPv6 ..............................................................................................................................347
Appendix D Legal Information .........................................................................................................355

Table of Contents
GS1920 Series User’s Guide
16
Index .................................................................................................................................................358

17
PART I
User’s Guide

18

GS1920 Series User’s Guide 19
CHAPTER 1
Getting to Know Your Switch
1.1 Introduction
This chapter introduces the main features and applications of the Switch. The GS1920 Series
consist of the two following models: GS1920-48 and GS1920-48HP. Referring to PoE model(s) in
this User's Guide only applies for GS1920-48HP.
The Switch is a layer-2 standalone Ethernet switch with additional layer-2, layer-3, and layer-4
features suitable for Ethernets. The Switch has forty-four 100/1000 Mbps Ethernet ports. It also
has four GbE dual personality interfaces with each interface comprising one mini-GBIC slot and one
100/1000 Mbps RJ-45 port, with either port or slot active at a time. Additional two SFP interfaces
are represented.
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 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.
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 Switch’s 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.
Table 1 Model-Specific Features
FEATURE SWITCH MODEL
IEEE 802.3af PoE GS1920-48HP
IEEE 802.3at High Power over Ethernet (PoE) GS1920-48HP
Power management mode - Classification GS1920-48HP
Power management mode - Consumption GS1920-48HP

Chapter 1 Getting to Know Your Switch
GS1920 Series User’s Guide
20
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.
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