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Zyxel GS1920-8HPV2, GS1920-48V2, GS1920-48HPV2, GS1920-24HPV2, GS1920-24V2 User Manual

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User’s Guide

GS1920v2 Series

8/24/48-port GbE Smart Managed Switch
LAN IP Address http://DHCP-assigned
User Name admin
Password 1234
Version 4.50 Edition 2, 08/2018
Copyright © 2018 Zyxel Communications Corporation
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.
Related Documentation
•Quick Start Guide The Quick Start Guide shows how to connect the Switch.
• Online Help Click the help link for a description of the fields in the Switch menus.
• Nebula Switch User’s Guide Go to support.zyxel.com to get this User’s Guide on how to configure the Switch using Nebula.
•More Information Go to https://businessforum.zyxel.com for product discussions.
Go to support.zyxel.com to find other information on the Switch
.
GS1920v2 Series User’s Guide
2

Document Conventions

Warnings and Notes
These are how warnings and notes are shown in this guide.
Warnings tell you about things that could harm you or your device.
Note: Notes tell you other important information (for example, other things you may need to
configure or helpful tips) or recommendations.
Syntax Conventions
• All models may be referred to as the “Switch” in this guide.
• Product labels, screen names, field labels and field choices are all in bold font.
• A right angle bracket ( > ) within a screen name denotes a mouse click. For example, Basic Setting >
Swtich Setup > Select VLAN Typemeans you first click Basic Setting in the navigation panel, then the Switch Setup sub menu and finally the Select VLAN Type tab to get to that screen.
Icons Used in Figures
Figures in this user guide may use the following generic icons. The Switch icon is not an exact representation of your device.
Switch Generic Router Wireless Router / Access Point
Generic Switch Smart TV Desktop
Laptop IP Camera Printer
Server
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Contents Overview

Contents Overview
User’s Guide ......................................................................................................................................19
Getting to Know Your Switch .............................................................................................................. 20
Hardware Installation and Connection ............................................................................................. 28
Hardware Panels .................................................................................................................................. 35
Technical Reference ........................................................................................................................43
The Web Configurator ......................................................................................................................... 44
Initial Setup Example ............................................................................................................................ 56
Tutorials .................................................................................................................................................. 60
Status and ZON ..................................................................................................................................... 68
Basic Setting .......................................................................................................................................... 77
VLAN .................................................................................................................................................... 107
Static MAC Forwarding ...................................................................................................................... 127
Static Multicast Forwarding ............................................................................................................... 129
Filtering ................................................................................................................................................. 133
Spanning Tree Protocol ...................................................................................................................... 135
Bandwidth Control ............................................................................................................................. 156
Broadcast Storm Control ................................................................................................................... 158
Mirroring ............................................................................................................................................... 160
Link Aggregation ................................................................................................................................ 162
Port Authentication ............................................................................................................................ 170
Port Security ......................................................................................................................................... 180
Time Range ......................................................................................................................................... 183
Classifier ............................................................................................................................................... 185
Policy Rule ........................................................................................................................................... 194
Queuing Method ................................................................................................................................ 198
Multicast .............................................................................................................................................. 201
AAA ...................................................................................................................................................... 225
IP Source Guard .................................................................................................................................. 235
Loop Guard ......................................................................................................................................... 258
Layer 2 Protocol Tunneling ................................................................................................................ 262
PPPoE ................................................................................................................................................... 266
Error Disable ......................................................................................................................................... 274
Private VLAN ....................................................................................................................................... 281
Green Ethernet ................................................................................................................................... 283
Link Layer Discovery Protocol (LLDP) ................................................................................................ 285
OAM ..................................................................................................................................................... 308
Static Route ......................................................................................................................................... 316
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Contents Overview
Differentiated Services ....................................................................................................................... 319
DHCP .................................................................................................................................................... 323
ARP Setup ............................................................................................................................................ 335
Maintenance ...................................................................................................................................... 339
Access Control .................................................................................................................................... 348
Diagnostic ........................................................................................................................................... 368
System Log .......................................................................................................................................... 371
Syslog Setup ........................................................................................................................................ 372
Cluster Management ......................................................................................................................... 375
MAC Table ........................................................................................................................................... 381
ARP Table ............................................................................................................................................ 384
Path MTU Table ................................................................................................................................... 386
Configure Clone ................................................................................................................................. 387
IPv6 Neighbor Table ........................................................................................................................... 390
Port Status ............................................................................................................................................ 392
Troubleshooting .................................................................................................................................. 398
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Table of Contents

Table of Contents
Document Conventions .................................................................. ....................................................3
Contents Overview..............................................................................................................................4
Table of Contents.................................................................................................................................6
Part I: User’s Guide.......................................................................................... 19
Chapter 1
Getting to Know Your Switch ............................................................................................................20
1.1 Introduction ..................................................................................................................................... 20
1.1.1 Management Modes ........................................................................................................... 20
1.1.2 Mode Changing ................................................................................................................... 21
1.1.3 ZON Utility ............................................................................................................................... 23
1.1.4 PoE .......................................................................................................................................... 23
1.2 Applications .................................................................................................................................... 23
1.2.1 Backbone Application ......................................................................................................... 24
1.2.2 Bridging Example .................................................................................................................. 24
1.2.3 High Performance Switching Example ............................................................................... 25
1.2.4 IEEE 802.1Q VLAN Application Examples ........................................................................... 25
1.3 Ways to Manage the Switch ......................................................................................................... 26
1.4 Good Habits for Managing the Switch ........................................................................................27
Chapter 2
Hardware Installation and Connection ...........................................................................................28
2.1 Installation Scenarios ...................................................................................................................... 28
2.2 Desktop Installation Procedure .................................................................................................... 28
2.3 Desk Mounting (GS1920-8HPv2 Only) ........................................................................................... 29
2.3.1 Installation Requirements ..................................................................................................... 29
2.3.2 Precautions ........................................................................................................................... 30
2.3.3 Attaching the Mounting Brackets to the Switch ............................................................... 30
2.3.4 Mounting the Switch under a Table ................................................................................... 30
2.4 Wall Mounting (GS1920-8HPv2 Only) ............................................................................................ 31
2.4.1 Installation Requirements ..................................................................................................... 31
2.5 Rack Mounting ............................................................................................................................... 32
2.5.1 Installation Requirements ..................................................................................................... 33
2.5.2 Precautions ........................................................................................................................... 33
2.5.3 Attaching the Mounting Brackets to the Switch ............................................................... 33
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2.5.4 Mounting the Switch on a Rack .......................................................................................... 33
Chapter 3
Hardware Panels................................................................................................................................35
3.1 Front Panel ...................................................................................................................................... 35
3.1.1 Gigabit Ethernet Ports .......................................................................................................... 35
3.1.2 PoE (GS1920-8HPv2 & GS1920-24HPv2 & GS1920-48HPv2) ............................................... 36
3.1.3 SFP Slots .................................................................................................................................. 36
3.1.4 PoE Mode (only available for GS1920-48HPv2) ................................................................. 38
3.2 Rear Panel ....................................................................................................................................... 38
3.2.1 Grounding .............................................................................................................................. 39
3.2.2 Power Connector ................................................................................................................. 40
3.3 LEDs ................................................................................................................................................ 40
Part II: Technical Reference........................................................................... 43
Chapter 4
The Web Configurator........................................................................................................................44
4.1 Overview ......................................................................................................................................... 44
4.2 System Login ................................................................................................................................... 44
4.3 The Status Screen .......................................................................................................................... 48
4.3.1 Change Your Password ....................................................................................................... 52
4.4 Saving Your Configuration ............................................................................................................. 53
4.5 Switch Lockout ............................................................................................................................... 53
4.6 Resetting the Switch ...................................................................................................................... 54
4.6.1 The Restore Button ................................................................................................................ 54
4.6.2 Restore Custom Default ....................................................................................................... 54
4.6.3 Reboot the Switch ................................................................................................................ 54
4.7 Logging Out of the Web Configurator .......................................................................................54
4.8 Help ................................................................................................................................................. 55
Chapter 5
Initial Setup Example.........................................................................................................................56
5.1 Overview ......................................................................................................................................... 56
5.1.1 Creating a VLAN ................................................................................................................... 56
5.1.2 Setting Port VID ...................................................................................................................... 57
5.1.3 Configuring Switch Management IP Address .................................................................... 58
Chapter 6
Tutorials...............................................................................................................................................60
6.1 Overview ......................................................................................................................................... 60
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6.2 How to Use DHCPv4 Snooping on the Switch ............................................................................. 60
6.3 How to Use DHCPv4 Relay on the Switch .................................................................................... 63
6.3.1 DHCP Relay Tutorial Introduction ........................................................................................ 64
6.3.2 Creating a VLAN ................................................................................................................... 64
6.3.3 Configuring DHCPv4 Relay .................................................................................................. 66
6.3.4 Troubleshooting ..................................................................................................................... 67
Chapter 7
Status and ZON...................................................................................................................................68
7.1 Overview ......................................................................................................................................... 68
7.1.1 What You Can Do ................................................................................................................. 68
7.2 Status ................................................................................................................................................ 68
7.3 Zyxel One Network (ZON) Utility .................................................................................................... 70
7.3.1 Requirements ......................................................................................................................... 70
7.3.2 Run the ZON Utility ................................................................................................................. 71
7.4 ZON Neighbor Management Screen .......................................................................................... 75
Chapter 8
Basic Setting.......................................................................................................................................77
8.1 Overview ......................................................................................................................................... 77
8.1.1 What You Can Do ................................................................................................................. 77
8.2 System Information ...................................................................................................................... 77
8.3 General Setup ............................................................................................................................... 79
8.4 Introduction to VLANs ................................................................................................................... 81
8.5 Switch Setup ................................................................................................................................... 82
8.6 IP Setup ........................................................................................................................................... 83
8.6.1 Management IP Addresses ..................................................................................................83
8.7 Port Setup ....................................................................................................................................... 85
8.8 PoE Status ....................................................................................................................................... 87
8.8.1 The PoE Status Screen ........................................................................................................... 88
8.8.2 PoE Time Range Status ......................................................................................................... 89
8.8.3 PoE Setup .............................................................................................................................. 90
8.9 Interface Setup ............................................................................................................................... 92
8.10 IPv6 ................................................................................................................................................. 93
8.10.1 IPv6 Interface Status ........................................................................................................... 94
8.10.2 IPv6 Configuration .............................................................................................................. 96
8.10.3 IPv6 Global Setup ................................................................................................................ 97
8.10.4 IPv6 Interface Setup ............................................................................................................ 98
8.10.5 IPv6 Link-Local Address Setup ............................................................................................ 98
8.10.6 IPv6 Global Address Setup ................................................................................................. 99
8.10.7 IPv6 Neighbor Discovery Setup ....................................................................................... 100
8.10.8 IPv6 Neighbor Setup ......................................................................................................... 101
8.10.9 DHCPv6 Client Setup ........................................................................................................ 102
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8.11 DNS ............................................................................................................................................... 104
8.12 Cloud Management .................................................................................................................. 104
8.12.1 Nebula Center Control Discovery ................................................................................... 105
8.12.2 Nebula Switch Registration ..............................................................................................105
Chapter 9
VLAN..................................................................................................................................................107
9.1 Overview ....................................................................................................................................... 107
9.1.1 What You Can Do ............................................................................................................... 107
9.1.2 What You Need to Know ................................................................................................... 107
9.2 VLAN Status .................................................................................................................................. 110
9.2.1 VLAN Details ....................................................................................................................... 111
9.3 VLAN Configuration .................................................................................................................... 112
9.4 Configure a Static VLAN ............................................................................................................ 112
9.5 Configure VLAN Port Setting ...................................................................................................... 114
9.6 Subnet Based VLANs ................................................................................................................... 115
9.6.1 Configuring Subnet Based VLAN ..................................................................................... 116
9.7 Protocol Based VLANs ................................................................................................................. 118
9.7.1 Configuring Protocol Based VLAN .................................................................................... 119
9.8 Voice VLAN ................................................................................................................................... 120
9.9 MAC Based VLAN ......................................................................................................................... 121
9.10 Port-Based VLAN Setup ............................................................................................................ 122
9.10.1 Configure a Port-Based VLAN ......................................................................................... 123
9.11 Technical Reference .................................................................................................................. 125
9.11.1 Create an IP-based VLAN Example ................................................................................ 125
Chapter 10
Static MAC Forwarding....................................................................................................................127
10.1 Overview ..................................................................................................................................... 127
10.1.1 What You Can Do ............................................................................................................. 127
10.2 Configuring Static MAC Forwarding ....................................................................................... 127
Chapter 11
Static Multicast Forwarding.............................................................................................................129
11.1 Static Multicast Forward Setup Overview ............................................................................... 129
11.1.1 What You Can Do ............................................................................................................. 129
11.1.2 What You Need To Know ................................................................................................. 129
11.2 Configuring Static Multicast Forwarding .................................................................................. 130
Chapter 12
Filtering..............................................................................................................................................133
12.1 Filtering Overview ...................................................................................................................... 133
12.1.1 What You Can Do ............................................................................................................. 133
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12.2 Configure a Filtering Rule .......................................................................................................... 133
Chapter 13
Spanning Tree Protocol ...................................................................................................................135
13.1 Spanning Tree Protocol Overview ........................................................................................... 135
13.1.1 What You Can Do ............................................................................................................. 135
13.1.2 What You Need to Know ................................................................................................. 135
13.2 Spanning Tree Protocol Status Screen ..................................................................................... 138
13.3 Spanning Tree Configuration ................................................................................................... 138
13.4 Configure Rapid Spanning Tree Protocol ............................................................................. 139
13.5 Rapid Spanning Tree Protocol Status ....................................................................................141
13.6 Configure Multiple Rapid Spanning Tree Protocol .............................................................. 142
13.7 Multiple Rapid Spanning Tree Protocol Status ....................................................................... 144
13.8 Configure Multiple Spanning Tree Protocol ......................................................................... 146
13.8.1 Multiple Spanning Tree Protocol Port Configuration .................................................... 149
13.9 Multiple Spanning Tree Protocol Status ...................................................................................150
13.10 Technical Reference ................................................................................................................ 153
13.10.1 MSTP Network Example .................................................................................................. 153
13.10.2 MST Region ....................................................................................................................... 154
13.10.3 MST Instance .................................................................................................................... 154
13.10.4 Common and Internal Spanning Tree (CIST) ............................................................... 154
Chapter 14
Bandwidth Control...........................................................................................................................156
14.1 Bandwidth Control Overview ................................................................................................... 156
14.1.1 What You Can Do ............................................................................................................. 156
14.2 Bandwidth Control Setup .......................................................................................................... 156
Chapter 15
Broadcast Storm Control .................................................................................................................158
15.1 Broadcast Storm Control Overview .........................................................................................158
15.1.1 What You Can Do ............................................................................................................. 158
15.2 Broadcast Storm Control Setup ................................................................................................ 158
Chapter 16
Mirroring............................................................................................................................................160
16.1 Mirroring Overview .................................................................................................................... 160
16.1.1 What You Can Do ............................................................................................................. 160
16.2 Port Mirroring Setup .................................................................................................................... 160
Chapter 17
Link Aggregation .................................... .... .... ... ............................................ .... .... ..........................162
17.1 Link Aggregation Overview ...................................................................................................... 162
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17.1.1 What You Can Do ............................................................................................................. 162
17.1.2 What You Need to Know ................................................................................................. 162
17.2 Link Aggregation Status ............................................................................................................. 163
17.3 Link Aggregation Setting .......................................................................................................... 164
17.3.1 Link Aggregation Control Protocol .............................................................................. 166
17.4 Technical Reference .................................................................................................................. 168
17.4.1 Static Trunking Example ................................................................................................... 168
Chapter 18
Port Authentication..........................................................................................................................170
18.1 Port Authentication Overview ................................................................................................. 170
18.1.1 What You Can Do ............................................................................................................. 170
18.1.2 What You Need to Know ................................................................................................. 170
18.1.3 MAC Authentication ........................................................................................................ 171
18.2 Port Authentication Configuration ........................................................................................... 171
18.3 Activate IEEE 802.1x Security ................................................................................................... 172
18.3.1 Guest VLAN ....................................................................................................................... 173
18.4 Activate MAC Authentication ................................................................................................. 175
18.5 Technical Reference .................................................................................................................. 177
18.5.1 IEEE 802.1x .......................................................................................................................... 177
18.5.2 RADIUS ................................................................................................................................ 177
18.5.3 EAP (Extensible Authentication Protocol) Authentication ........................................... 178
Chapter 19
Port Security......................................................................................................................................180
19.1 Port Security Overview .............................................................................................................. 180
19.1.1 What You Can Do ............................................................................................................. 180
19.2 Port Security Setup ...................................................................................................................... 180
Chapter 20
Time Range.......................................................................................................................................183
20.1 Time Range Overview ............................................................................................................... 183
20.1.1 What You Can Do ............................................................................................................. 183
20.2 Configuring Time Range ............................................................................................................ 183
Chapter 21
Classifier............................................................................................................................................185
21.1 Classifier Overview ..................................................................................................................... 185
21.1.1 What You Can Do ............................................................................................................. 185
21.1.2 What You Need to Know ................................................................................................. 185
21.2 Classifier Status ............................................................................................................................ 186
21.3 Classifier Configuration ............................................................................................................. 186
21.3.1 Viewing and Editing Classifier Configuration Summary ............................................... 190
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21.4 Classifier Global Setting ............................................................................................................. 191
21.5 Classifier Example ....................................................................................................................... 192
Chapter 22
Policy Rule ........................................................................................................................................194
22.1 Policy Rules Overview ............................................................................................................... 194
22.1.1 What You Can Do ............................................................................................................. 194
22.2 Configuring Policy Rules ............................................................................................................ 194
22.3 Policy Example ............................................................................................................................ 197
Chapter 23
Queuing Method..............................................................................................................................198
23.1 Queuing Method Overview ..................................................................................................... 198
23.1.1 What You Can Do ............................................................................................................. 198
23.1.2 What You Need to Know ................................................................................................. 198
23.2 Configuring Queuing ................................................................................................................. 199
Chapter 24
Multicast............................................................................................................................................201
24.1 Multicast Overview ..................................................................................................................... 201
24.1.1 What You Can Do ............................................................................................................. 201
24.1.2 What You Need to Know ................................................................................................. 201
24.2 Multicast Setup ........................................................................................................................... 205
24.3 IPv4 Multicast Status .................................................................................................................. 205
24.3.1 IGMP Snooping ................................................................................................................. 206
24.3.2 IGMP Snooping VLAN ...................................................................................................... 208
24.3.3 IGMP Filtering Profile ........................................................................................................ 210
24.4 IPv6 Multicast Status .................................................................................................................. 211
24.4.1 MLD Snooping-proxy ........................................................................................................ 211
24.4.2 MLD Snooping-proxy VLAN .............................................................................................. 212
24.4.3 MLD Snooping-proxy VLAN Port Role Setting ................................................................. 214
24.4.4 MLD Snooping-proxy Filtering .......................................................................................... 215
24.4.5 MLD Snooping-proxy Filtering Profile ............................................................................... 217
24.5 General MVR Configuration ..................................................................................................... 218
24.5.1 MVR Group Configuration .............................................................................................. 220
24.5.2 MVR Configuration Example ........................................................................................... 222
Chapter 25
AAA...................................................................................................................................................225
25.1 AAA Overview ........................................................................................................................... 225
25.1.1 What You Can Do ............................................................................................................. 225
25.1.2 What You Need to Know ................................................................................................. 225
25.2 AAA Screens ............................................................................................................................... 226
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25.3 RADIUS Server Setup .................................................................................................................. 226
25.4 TACACS+ Server Setup .............................................................................................................. 228
25.5 AAA Setup .................................................................................................................................. 230
25.6 Technical Reference .................................................................................................................. 232
25.6.1 Vendor Specific Attribute ................................................................................................ 232
25.6.2 Supported RADIUS Attributes ........................................................................................... 233
25.6.3 Attributes Used for Authentication .................................................................................. 234
Chapter 26
IP Source Guard...............................................................................................................................235
26.1 IP Source Guard Overview ....................................................................................................... 235
26.1.1 What You Can Do ............................................................................................................. 235
26.1.2 What You Need to Know ................................................................................................. 236
26.2 IP Source Guard Screen ............................................................................................................ 236
26.3 IPv4 Source Guard Setup .......................................................................................................... 237
26.4 IPv4 Source Guard Static Binding ............................................................................................ 237
26.5 DHCP Snooping ......................................................................................................................... 239
26.6 DHCP Snooping Configure ....................................................................................................... 242
26.6.1 DHCP Snooping Port Configure ..................................................................................... 244
26.6.2 DHCP Snooping VLAN Configure ................................................................................... 245
26.6.3 DHCP Snooping VLAN Port Configure ............................................................................ 246
26.7 ARP Inspection Status ................................................................................................................ 248
26.8 ARP Inspection VLAN Status ...................................................................................................... 249
26.9 ARP Inspection Log Status ......................................................................................................... 249
26.10 ARP Inspection Configure ........................................................................................................ 251
26.10.1 ARP Inspection Port Configure ...................................................................................... 252
26.10.2 ARP Inspection VLAN Configure ................................................................................... 253
26.11 Technical Reference ................................................................................................................ 254
26.11.1 DHCP Snooping Overview ............................................................................................. 254
26.11.2 ARP Inspection Overview ............................................................................................... 256
Chapter 27
Loop Guard ......................................................................................................................................258
27.1 Loop Guard Overview .............................................................................................................. 258
27.1.1 What You Can Do ............................................................................................................. 258
27.1.2 What You Need to Know ................................................................................................. 258
27.2 Loop Guard Setup ...................................................................................................................... 260
Chapter 28
Layer 2 Protocol Tunneling..............................................................................................................262
28.1 Layer 2 Protocol Tunneling Overview ......................................................................................262
28.1.1 What You Can Do ............................................................................................................. 262
28.1.2 What You Need to Know ................................................................................................. 262
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28.2 Configuring Layer 2 Protocol Tunneling ................................................................................... 263
Chapter 29
PPPoE.................................................................................................................................................266
29.1 PPPoE Intermediate Agent Overview ..................................................................................... 266
29.1.1 What You Can Do ............................................................................................................. 266
29.1.2 What You Need to Know ................................................................................................. 266
29.2 PPPoE Screen .............................................................................................................................. 268
29.3 PPPoE Intermediate Agent ....................................................................................................... 269
29.3.1 PPPoE IA Per-Port .............................................................................................................. 270
29.3.2 PPPoE IA Per-Port Per-VLAN ............................................................................................ 271
29.3.3 PPPoE IA for VLAN ............................................................................................................ 272
Chapter 30
Error Disable......................................................................................................................................274
30.1 Error Disable Overview .............................................................................................................. 274
30.1.1 CPU Protection Overview ................................................................................................ 274
30.1.2 Error-Disable Recovery Overview .................................................................................... 274
30.1.3 What You Can Do ............................................................................................................. 274
30.2 Error Disable Screen .................................................................................................................... 275
30.3 Error-Disable Status .................................................................................................................... 275
30.4 CPU Protection Configuration .................................................................................................. 277
30.5 Error-Disable Detect Configuration ......................................................................................... 278
30.6 Error-Disable Recovery Configuration .....................................................................................279
Chapter 31
Private VLAN........... .... ... .... .... ............................................ .... ... .... ....................................................281
31.1 Private VLAN Overview ............................................................................................................. 281
31.2 Configuring Private VLAN .......................................................................................................... 281
Chapter 32
Green Ethernet.................................................................. .... ...........................................................283
32.1 Green Ethernet Overview ......................................................................................................... 283
32.2 Configuring Green Ethernet ...................................................................................................... 283
Chapter 33
Link Layer Discovery Protocol (LLDP) .............................................................................................285
33.1 LLDP Overview ............................................................................................................................ 285
33.2 LLDP-MED Overview ................................................................................................................... 286
33.3 LLDP Screens ............................................................................................................................... 287
33.4 LLDP Local Status ....................................................................................................................... 288
33.4.1 LLDP Local Port Status Detail ..........................................................................................289
33.5 LLDP Remote Status ................................................................................................................... 292
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33.5.1 LLDP Remote Port Status Detail ...................................................................................... 293
33.6 LLDP Configuration .................................................................................................................... 299
33.6.1 Basic TLV Setting ............................................................................................................... 300
33.6.2 Org-specific TLV Setting .................................................................................................. 301
33.7 LLDP-MED Configuration ........................................................................................................... 302
33.8 LLDP-MED Network Policy ......................................................................................................... 303
33.9 LLDP-MED Location ................................................................................................................... 304
Chapter 34
OAM..................................................................................................................................................308
34.1 OAM Overview .......................................................................................................................... 308
34.1.1 What You Can Do ............................................................................................................. 308
34.2 OAM Status .................................................................................................................................. 308
34.2.1 OAM Details ....................................................................................................................... 309
34.3 OAM Configuration .................................................................................................................... 313
34.4 OAM Remote Loopback ........................................................................................................... 314
Chapter 35
Static Route.......................................................................................................................................316
35.1 Static Routing Overview .......................................................................................................... 316
35.1.1 What You Can Do ............................................................................................................. 316
35.2 Static Routing .............................................................................................................................. 316
35.3 IPv4 Static Route ........................................................................................................................ 317
Chapter 36
Differentiated Services ....................................................................................................................319
36.1 DiffServ Overview ...................................................................................................................... 319
36.1.1 What You Can Do ............................................................................................................. 319
36.1.2 What You Need to Know ................................................................................................. 319
36.2 Activating DiffServ ..................................................................................................................... 320
36.3 DSCP Settings ............................................................................................................................ 321
36.3.1 Configuring DSCP Settings ...............................................................................................322
Chapter 37
DHCP .................................................................................................................................................323
37.1 DHCP Overview .......................................................................................................................... 323
37.1.1 What You Can Do ............................................................................................................. 323
37.1.2 What You Need to Know ................................................................................................. 323
37.2 DHCP Configuration ................................................................................................................... 324
37.3 DHCPv4 Status ........................................................................................................................... 324
37.4 DHCPv4 Relay ............................................................................................................................ 324
37.4.1 DHCPv4 Relay Agent Information ................................................................................... 325
37.4.2 DHCPv4 Option 82 Profile ................................................................................................. 326
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37.4.3 Configuring DHCPv4 Global Relay ................................................................................. 327
37.4.4 DHCPv4 Global Relay Port Configure ........................................................................... 328
37.4.5 Global DHCP Relay Configuration Example .................................................................. 329
37.4.6 Configuring DHCP VLAN Settings ................................................................................. 330
37.4.7 DHCPv4 VLAN Port Configure ........................................................................................ 331
37.4.8 Example: DHCP Relay for Two VLANs ............................................................................. 332
37.5 DHCPv6 Relay ............................................................................................................................. 333
Chapter 38
ARP Setup..........................................................................................................................................335
38.1 ARP Overview ............................................................................................................................ 335
38.1.1 What You Can Do ............................................................................................................. 335
38.1.2 What You Need to Know ................................................................................................. 335
38.2 ARP Setup .................................................................................................................................... 337
38.2.1 ARP Learning .................................................................................................................... 337
Chapter 39
Maintenance....................................................................................................................................339
39.1 Overview ..................................................................................................................................... 339
39.1.1 What You Can Do ............................................................................................................. 339
39.2 The Maintenance Screen ........................................................................................................ 339
39.2.1 Erase Running-Configuration .......................................................................................... 340
39.2.2 Save Configuration ........................................................................................................... 341
39.2.3 Reboot System .................................................................................................................. 341
39.3 Firmware Upgrade ................................................................................................................... 342
39.4 Restore Configuration ................................................................................................................ 343
39.5 Backup Configuration ................................................................................................................ 344
39.6 Tech-Support .............................................................................................................................. 344
39.7 Technical Reference .................................................................................................................. 346
39.7.1 FTP Command Line ........................................................................................................... 346
39.7.2 Filename Conventions ..................................................................................................... 346
39.7.3 FTP Command Line Procedure ....................................................................................... 347
39.7.4 GUI-based FTP Clients ....................................................................................................... 347
39.7.5 FTP Restrictions .................................................................................................................. 347
Chapter 40
Access Control.................................................................................................................................348
40.1 Access Control Overview ......................................................................................................... 348
40.1.1 What You Can Do ............................................................................................................. 348
40.2 The Access Control Main Screen .............................................................................................. 348
40.3 Configuring SNMP .................................................................................................................... 349
40.3.1 Configuring SNMP Trap Group ..................................................................................... 350
40.3.2 Enabling/Disabling Sending of SNMP Traps on a Port ................................................... 351
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Table of Contents
40.3.3 Configuring SNMP User .................................................................................................. 352
40.4 Setting Up Login Accounts ....................................................................................................... 354
40.5 Service Access Control ............................................................................................................ 355
40.6 Remote Management ......................................................................................................... 356
40.7 Technical Reference .................................................................................................................. 357
40.7.1 About SNMP ...................................................................................................................... 357
40.7.2 SSH Overview ..................................................................................................................... 360
40.7.3 Introduction to HTTPS ........................................................................................................ 362
40.7.4 Google Chrome Warning Messages .............................................................................. 366
Chapter 41
Diagnostic.........................................................................................................................................368
41.1 Overview ..................................................................................................................................... 368
41.2 Diagnostic .................................................................................................................................. 368
Chapter 42
System Log........................................................................................................................................371
42.1 Overview ..................................................................................................................................... 371
42.2 System Log .................................................................................................................................. 371
Chapter 43
Syslog Setup .....................................................................................................................................372
43.1 Syslog Overview .......................................................................................................................... 372
43.1.1 What You Can Do ............................................................................................................. 372
43.2 Syslog Setup ................................................................................................................................ 372
Chapter 44
Cluster Management.......................................................................................................................375
44.1 Cluster Management Overview ..............................................................................................375
44.1.1 What You Can Do ............................................................................................................. 375
44.2 Cluster Management Status ..................................................................................................... 376
44.3 Clustering Management Configuration ................................................................................ 377
44.4 Technical Reference .................................................................................................................. 378
44.4.1 Cluster Member Switch Management .......................................................................... 378
Chapter 45
MAC Table........................................................................................................................................381
45.1 MAC Table Overview ................................................................................................................ 381
45.1.1 What You Can Do ............................................................................................................. 381
45.1.2 What You Need to Know ................................................................................................. 381
45.2 Viewing the MAC Table ............................................................................................................ 382
Chapter 46
ARP Table..........................................................................................................................................384
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Table of Contents
46.1 Overview ..................................................................................................................................... 384
46.1.1 What You Can Do ............................................................................................................. 384
46.1.2 What You Need to Know ................................................................................................. 384
46.2 Viewing the ARP Table ............................................................................................................... 384
Chapter 47
Path MTU Table.................................................................................................................................386
47.1 Path MTU Overview .................................................................................................................. 386
47.2 Viewing the Path MTU Table ..................................................................................................... 386
Chapter 48
Configure Clone.................... .... ... ............................................ .... .... ... .... .........................................387
48.1 Overview ..................................................................................................................................... 387
48.2 Configure Clone ........................................................................................................................ 387
Chapter 49
IPv6 Neighbor Table.........................................................................................................................390
49.1 IPv6 Neighbor Table Overview ................................................................................................. 390
49.2 Viewing the IPv6 Neighbor Table ............................................................................................. 390
Chapter 50
Port Status .........................................................................................................................................392
50.1 Overview ..................................................................................................................................... 392
50.2 Port Status .................................................................................................................................... 392
50.2.1 Port Details ...................................................................................................................... 393
50.2.2 Port Utilization ................................................................................................................. 396
Chapter 51
Troubleshooting................................................................................................................................398
51.1 Power, Hardware Connections, and LEDs ............................................................................... 398
51.2 Switch Access and Login ........................................................................................................... 399
51.3 Switch Configuration .................................................................................................................. 401
Appendix A Customer Support ..................................................................................................... 402
Appendix B Common Services...................................................................................................... 408
Appendix C IPv6.............................................................................................................................. 411
Appendix D Legal Information ...................................................................................................... 419
Index.................................................................................................................................................423
GS1920v2 Series User’s Guide
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PART I

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 GS1920v2 Series consists of the following models:
• GS1920-8HPv2
• GS1920-24v2
• GS1920-24HPv2
• GS1920-48v2
• GS1920-48HPv2
References to PoE model(s) in this User's Guide only apply to GS1920-8HPv2, GS1920-24HPv2 and GS1920-48HPv2.
The following table describes the port features of the Switch by model.
Table 1 GS1920v2 Series Comparison Table
SWITCH MODELS GS1920-8HPV2 GS1920-24V2 GS1920-24HPV2 GS1920-48V2 GS1920-48HPV2
10/100/1000 Mbps Ethernet Ports
10/100/1000 Mbps PoE Ports
GbE Dual Personality Interface
1 Gbps SFP interface
FAN - - 2 1 2
Wall-mount V - - - -
Rack-mount- VVVV
Desk-mountV----
8 24244444
8-24-48
24444
---22
1.1.1 Management Modes
NebulaFlex for ‘hybrid mode’ means you can set the Switch to operate in only one of either direct standalone or cloud mode (not both at the same time). The Nebula Control Center (NCC) is an alternative cloud-based network management system that allows you to remotely manage and monitor the Switch.
Use the web configurator to configure and manage the Switch directly in standalone mode or use Nebula Control Center (NCC) to configure and manage the Switch in cloud mode. You may also access a minimized version of the web configurator in cloud mode.
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Chapter 1 Getting to Know Your Switch
Nebula Cloud Management
To have Nebula manage the Switch, you must first register it at the Nebula web portal at http:// nebula.zyxel.com, and ensure that Nebula Control Center Discovery is enabled in Basic > Cloud Management > Nebula Control Center Discovery in the Switch web configurator (enabled by default).
Note: See the Switch’s datasheet for the feature differences between standalone and
Nebula cloud management modes. You can find the Switch’s datasheet at the Zyxel website.
See the NCC (Nebula Control Center) User’s Guide for how to configure the Switch using Nebula.
1.1.2 Mode Changing
This section describes how to change the Switch’s management mode.
Note: When you change the Switch’s management mode from standalone mode to Nebula-
manged mode, the configuration settings of the Switch will be overwritten with what you have configured in Nebula.
When you change the Switch’s management mode from Nebula-manged mode to standalone mode, the Switch will reset to its factory-default settings.
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Chapter 1 Getting to Know Your Switch
From Standalone to Nebula Cloud Management
To manage your Switch via Nebula, connect the Switch to the Internet, and register it to a site and organization at the Nebula web portal (http://nebula.zyxel.com).
See the following steps or the Switch Quick Start Guide for how to do device registration.
Go to the NCC to Register the Switch
1 Go to the Nebula web portal in one of three ways.
• Type http://nebula.zyxel.com in a supported web browser. See the Nebula User’s Guide for more information about supported browsers.
• Click the Visit button in the Switch’s login page.
• Click the Nebula icon in the upper right corner of the Switch’s web configurator.
2 Click Login in the Nebula web portal. Enter your myZyxel account information. You’ll be redirected to
another screen where you can sign up for a myZyxel account if you don’t have one.
3 Use the Nebula setup wizard to create an organization and a site.
4 Register the Switch by entering its MAC address and serial number. The serial number and MAC address
can be found in the Status screen or the device back label on the Switch. Use the Zyxel Nebula Mobile App to Register the Switch
1 Download and open the Zyxel Nebula Mobile app in your mobile device. Click Sign Up to create a
myZyxel account or enter your existing account information to log in.
2 You should already have created an organization and a site.
3 Select a site and scan the Switch's QR code to add it to the site. You can find the QR code:
• On a label on the Switch or
• On its box or
• In the web configurator at Basic > Cloud Management > Nebula Switch Registration.
See Section 3.3 on page 40 for more information about the CLOUD LED or Section 7.2 on page 68 for more information about the Hybrid Mode field in the Status screen to see if the Switch goes into Nebula cloud management mode successfully.
Note: The Switch goes into Nebula-managed mode automatically after it can access the
Nebula web portal and is successfully registered there. Its login password and settings are then overwritten with what you have configured in the Nebula web portal.
From Nebula-managed to Standalone
To return to direct management standalone mode, just click Unregister to remove the Switch from the organization/site in the Nebula web portal. The Switch will reboot and restore the factory default settings.
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1.1.3 ZON Utility
With its built-in web configurator, including the Zyxel One Network (ZON) Neighbor Management feature (Section 7.4 on page 75), viewing, managing and configuring the Switch and its neighboring devices is easy.
In addition, Zyxel offers a proprietary software program called Zyxel One Network (ZON) Utility, it is a utility tool that assists you to set up and maintain network devices in a more simple and efficient way. You can download the ZON Utility at www.zyxel.com and install it on a PC (Windows operating system). For more information on ZON Utility see Section 7.3 on page 70.
The following table shows which firmware version supports ZON and Neighbor Management (Smart Connect) for each Switch. The firmware on each Switch is identified by the firmware trunk version, followed by a unique model code and release number in brackets. For example, 4.50(ABMK.0) is a firmware version for GS1920-48HPv2 where 4.50 is the firmware trunk version, ABMK identifies the GS1920­48HPv2 and .0 is the first release of trunk version 4.50.
Table 2 Models and Firmware Version
SWITCH MODEL FIRMWARE VERSION
GS1920-8HPv2 4.50(ABKZ.0) and later
GS1920-24v2 4.50(ABMH.0) and later
GS1920-24HPv2 4.50(ABMI.0) and later
GS1920-48v2 4.50(ABMJ.0) and later
GS1920-48HPv2 4.50(ABMK.0) and later
Chapter 1 Getting to Know Your Switch
1.1.4 PoE
The GS1920-8HPv2, GS1920-24HPv2, and GS1920-48HPv2 come with a Power-over-Ethernet (PoE) feature. The GS1920-8HPv2, GS1920-24HPv2, and GS1920-48HPv2 support 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
The following table describes the PoE features of the Switch by model.
Table 3 Models and PoE Features
SWITCH MODEL POE FEATURES
GS1920-8HPv2
GS1920-24HPv2
GS1920-48HPv2

1.2 Applications

IEEE 802.3af PoE IEEE 802.3at High Power over Ethernet (PoE) Power management mode - Classification Power management mode - Consumption Scheduled PoE (PoE Time Range)
This section shows a few examples of using the Switch in various network environments.
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Chapter 1 Getting to Know Your Switch
1.2.1 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.
Figure 1 Backbone Application
1.2.2 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/SFP port on the Switch.
Moreover, the Switch eases supervision and maintenance by allowing network managers to centralize multiple servers at a single location.
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Chapter 1 Getting to Know Your Switch
Figure 2 Bridging Application
1.2.3 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
1.2.4 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 107.
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Chapter 1 Getting to Know Your Switch
1.2.4.1 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

1.3 Ways to Manage the Switch

Use 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 44.
• FTP. Use FTP for firmware upgrades and configuration backup/restore. See Section 39.7.1 on page
346.
• SNMP. The Switch can be monitored by an SNMP manager. See Section 40.7.1 on page 357.
• Cluster Management. Cluster Management allows you to manage multiple switches through one switch, called the cluster manager. See Chapter 43 on page 372.
• ZON Utility. ZON Utility is a program designed to help you deploy and perform initial setup on a network more efficiently. See Section 7.3 on page 70.
• NCC (Zyxel Nebula Control Center). With the NCC, you can remotely manage and monitor the Switch through a cloud-based network management system. See Section 8.12 on page 104 or the NCC User’s Guide for detailed information about how to access the NCC and manage your Switch via the NCC. See the NCC User’s Guide for how to configure Nebula managed devices.
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Chapter 1 Getting to Know Your Switch

1.4 Good Habits for Managing the Switch

Do the following things regularly to make the Switch more secure and to manage the Switch more effectively.
• Change the password. Use a password that’s 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.
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Hardware Installation and

2.1 Installation Scenarios

This chapter shows you how to install and connect the Switch.
The Switch can be:
• Placed on a desktop.
• Desk-mounted under a table.
• Wall-mounted on a wall
• Rack-mounted on a standard EIA rack.
CHAPTER 2
Connection
Note: Ask an authorized technician to attach the Switch under a desk or to the rack/wall. See
the Installation Requirements sections in this chapter to know the types of screws and screw drivers for each mounting method.
WARNING! Failure to use the proper screws may damage the unit.
See Table 1 on page 20 for the comparison table of the hardware installation methods for each model.
To start using the Switch, simply connect the power cables and turn it on.
WARNING! The surface of the Switch could be hot when it’s functioning. Do NOT put your hands on it. You may get burned. This could happen especially when you’re using the GS1920-8HPv2. It’s a compact and fanless Switch capable of supplying Power over Ethernet (PoE).
WARNING! This Switch is not suitable for use in locations where children are likely to be present.

2.2 Desktop Installation Procedure

1 Make sure the Switch is clean and dry.
2 Remove the adhesive backing from the rubber feet.
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Chapter 2 Hardware Installation and Connection
3 Attach the rubber feet to each corner on the bottom of the Switch. These rubber feet help protect the
Switch from shock or vibration and ensure space between devices when stacking.
Note: Rubber feet will be attached to the GS1920-8HPv2 by default. To make sure of air
circulation, do NOT remove them.
Figure 5 Attaching Rubber Feet
4 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.
5 Make sure there is at least 40 mm of clearance around and from the surface to the bottom of the Switch
to allow air circulation and the attachment of cables and the power cord.
Note: Make sure that you meet the requirements of clearance when you use the Switch for
stacking. It’s recommended to only use the Switch with Fans in a stack. See Table 1 on
page 20 to see whether your Switch has fans.
WARNING! Do NOT block the ventilation holes nor store things on the Switch. Allow clearance for the ventilation holes to prevent your Switch from overheating. This is especially crucial when your Switch doesn’t have fans. Overheating could affect the performance of your Switch, or even damage it.

2.3 Desk Mounting (GS1920-8HPv2 Only)

The GS1920-8HPv2 can be mounted under a table. Follow the steps below to mount your Switch under a table.
2.3.1 Installation Requirements
• Two mounting brackets
• Eight M3 flat head screws and a #2 Philips screwdriver
• Four M4 flat head screws and a #2 Philips screwdriver
• Four washers (inside diameter: 3.5mm; outside diameter: 11.5mm)
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Chapter 2 Hardware Installation and Connection
2.3.2 Precautions
• Make sure to place the Switch horizontally under a smooth level surface.
• Make sure the table is sturdy enough for desk mounting.
• Make sure there is enough table thickness to drill screws.
• Make sure there is sufficient space for port connections.
2.3.3 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 6 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 under a table. Proceed to the next section.
2.3.4 Mounting the Switch under a Table
1 Determine where you want to mount the Switch under a table. See Section 2.3 on page 29 to choose a
suitable location.
2 Position the Switch in place and mark the places for drilling with the attached brackets.
3 Drill holes at the marked places under the table.
4 Line up the two screw holes on the bracket with the screw holes under the table.
GS1920v2 Series User’s Guide
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Figure 7 Mounting the Switch under a Table
5 Place the washers on the screw holes of the bracket.
6 Using a #2 Philips screwdriver, install the M4 flat head screws through the washers and mounting bracket
holes into the table. The washers should be in between the M4 flat head screws and the brackets.
7 Repeat steps 1 and 6 to attach the second mounting bracket under the table.

2.4 Wall Mounting (GS1920-8HPv2 Only)

The GS1920-8HPv2 can be mounted on a wall. You may need screw anchors if mounting on a concrete or brick wall.
2.4.1 Installation Requirements
• Distance between holes: 78mm
• Two M4 screws and a #2 Philips screwdriver
• Two screw anchors (optional)
1 Select a position free of obstructions on a wall strong enough to hold the weight of the Switch.
2 Mark two holes on the wall at the appropriate distance apart for the screws.
WARNING! Be careful to avoid damaging pipes or cables located inside the wall when drilling holes for the screws.
3 If using screw anchors, drill two holes for the screw anchors into the wall. Push the anchors into the full
depth of the holes, then insert the screws into the anchors. Do not insert the screws all the way in - leave a small gap of about 0.5 cm.
If not using screw anchors, use a screwdriver to insert the screws into the wall. Do not insert the screws all the way in - leave a gap of about 0.5 cm.
4 Make sure the screws are fastened well enough to hold the weight of the Switch with the connection
cables.
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Chapter 2 Hardware Installation and Connection
5 Align the holes on the back of the Switch with the screws on the wall. Hang the Switch on the screws.
Note: Make sure there is enough clearance between the wall and the Switch to allow
ventilation.
WARNING! The Switch should be wall-mounted horizontally, and make sure the front panel is facing down. The Switch's side panels with ventilation slots should not be facing up or down as this position is less safe.

2.5 Rack Mounting

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.
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Chapter 2 Hardware Installation and Connection
Note: Make sure there is enough clearance between each equipment on the rack for air
circulation.
2.5.1 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.
2.5.2 Precautions
• Make sure the rack will safely support the combined weight of all the equipment it contains.
• 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.
2.5.3 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 8 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.
2.5.4 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.
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Chapter 2 Hardware Installation and Connection
Figure 9 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.
Note: Make sure you tighten all the four screws to prevent the Switch from getting slanted.
3 Repeat steps 1 and 6 to attach the second mounting bracket on the other side of the rack.
GS1920v2 Series User’s Guide
34
This chapter describes the front panel and rear panel of the Switch and shows you how to make the hardware connections.

3.1 Front Panel

The following figures show the front panels of the Switch. Note that the front panels of the Switch don’t state the v2 model names.
Figure 10 Front Panel: GS1920-8HPv2
Chapter 3 Hardware Panels
CHAPTER 3

Hardware Panels

Figure 11 Front Panel: GS1920-24v2
Figure 12 Front Panel: GS1920-24HPv2
Figure 13 Front Panel: GS1920-48v2
Figure 14 Front Panel: GS1920-48HPv2
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.
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Chapter 3 Hardware Panels
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover Ethernet cable.
Four 1000Base-T Ethernet ports are paired with an SFP slot to create a dual personality interface. The Switch uses up to one connection for each SFP and 1000Base-T Ethernet pair. The SFP slots have priority over the Gigabit ports. This means that if an SFP 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 auto­negotiation 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 Switch’s 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 PoE (GS1920-8HPv2 & GS1920-24HPv2 & GS1920-48HPv2)
The Switch supports both the IEEE 802.3af Power over Ethernet (PoE) and IEEE 802.3at Power over Ethernet (PoE) plus standards. The Switch is a Power Sourcing Equipment (PSE) because it provides a source of power via its Ethernet ports. Each device that receives power through an Ethernet port is a Powered Device (PD).
3.1.3 SFP Slots
These are slots for SFP (Small Form-Factor Pluggable) 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 committee’s 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.
GS1920v2 Series User’s Guide
36
WARNING! To avoid possible eye injury, do not look into an operating fiber-optic module’s connectors.
• Type: SFP connection interface
• Connection speed: 100/1000 Mbps per second
3.1.3.1 Transceiver Installation
Use the following steps to install an SFP transceiver.
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 transceiver’s latch (latch styles vary).
5 Connect the fiber optic cables to the transceiver.
Figure 15 Transceiver Installation Example
Chapter 3 Hardware Panels
Figure 16 Connecting the Fiber Optic Cables
3.1.3.2 Transceiver Removal
Use the following steps to remove an SFP transceiver.
1 Remove the fiber optic cables from the transceiver.
2 Open the transceiver’s latch (latch styles vary).
Note: Make sure the transceiver’s latch is pushed all the way down, so the transceiver can be
pulled out successfully.
3 Pull the transceiver out of the slot.
Note: Do NOT pull the transceiver out by force. You could damage it.
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Chapter 3 Hardware Panels
Figure 17 Removing the Fiber Optic Cables
Figure 18 Opening the Transceiver’s Latch Example
Figure 19 Transceiver Removal Example
3.1.4 PoE Mode (only available for GS1920-48HPv2)
Push or release this button (see Section Figure 14 on page 35) to change how the Link/ACT LED works.
• Each Ethernet port’s LED is changed to act as a PoE Mode LED by pushing the PoE MODE button on the front panel.
• Each Ethernet port’s LED is changed back to act as a Link/ACT LED by releasing the PoE MODE button on the front panel.
View the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting (see Section
3.3 on page 40).

3.2 Rear Panel

The following figures show the rear panels of the Switch.
Figure 20 Rear Panel: GS1920-8HPv2
Figure 21 Rear Panel: GS1920-24v2
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38
Figure 22 Rear Panel: GS1920-24HPv2
Figure 23 Rear Panel: GS1920-48v2
Figure 24 Rear Panel: GS1920-48HPv2
3.2.1 Grounding
Grounding is a safety measure to have unused electricity return to the ground. It prevents damage to the Switch, and protects you from electrocution.
Any device that is located outdoors and connected to this product must be properly grounded and surge protected. To the extent permissible by applicable law, failure to follow these guidelines could result in damage to your ZyXEL Device which may not be covered by it’s warranty.
Chapter 3 Hardware Panels
1 Remove the M4 ground screw from the Switch’s rear panel.
2 Secure a green/yellow ground cable (16 AWG or smaller) to the Switch's rear panel using the M4 ground
screw.
3 Attach the other end of the cable to the ground, either to the same ground electrode as the rack you
installed the device on or to the main grounding electrode of the building.
Follow your country's regulations and safety instructions to electrically ground the device properly.
if you are uncertain that suitable grounding is available, contact the appropriate electrical inspection authority or an electrician.
Warning! Connect the ground cable before you connect any other cables or wiring.
Figure 25 Grounding
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Chapter 3 Hardware Panels
3.2.2 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).
See Chapter 51 on page 398 for information on the Switch’s power supply requirements.

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.
Table 4 LED Descriptions
LED COLOR STATUS DESCRIPTION
PWR Green On The Switch is receiving power from the power module in the power slot.
Blinking The Switch is returning to the last-saved custom default configuration settings.
Amber On The Switch is returning to its factory default configuration settings.
Off The Switch is not receiving power from the power module in the power slot.
SYS Green On The Switch is on and functioning properly.
Blinking The Switch is rebooting and performing self-diagnostic tests.
Red On The Switch is functioning abnormally.
Off The power is off or the Switch is not ready/malfunctioning.
CLOUD Green On The Switch has successfully connected to the NCC (Nebula Control Center).
Blinking The Switch cannot connect to the NCC because it is not registered.
Amber On The Switch is registered at NCC but cannot connect to the NCC. Please
Blinking The Switch is not registered at NCC and cannot connect to the NCC. Please
Off The Switch is operating in standalone mode. Nebula Control Center
LOCATOR Blue On The Switch is uploading firmware. While the Switch is doing this, don’t turn off
Blinking Shows the actual location of the Switch between several devices in a rack.
Off The locator is not functioning or malfunctioning.
check the Internet connection of the Switch.
check the Internet connection of the Switch and register the Switch at NCC.
Discovery is disabled in Basic > Cloud Management > Nebula Control Center Discovery in the Switch Web Configurator.
the power.
The default timer is 30 minutes when you are configuring the Switch.
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Chapter 3 Hardware Panels
Table 4 LED Descriptions (continued)
LED COLOR STATUS DESCRIPTION
PoE Usage MAX
Green
On Each bar represents 20% of PoE Power consumption.
(GS1920-8HPv2)
Bar1 is the bar at the bottom; bar 5 is the bar at the top.
PoE MAX
(GS1920-24HPv2 & GS1920­48HPv2)
Ethernet Ports and PoE
LNK/ACT
1-8 (GS1920­8HPv2)
1-24 (GS1920­24v2/24HPv2) and
1-48 (GS1920­48v2/48HPv2)
(Bar1-Bar3)
Yellow
(Bar4)
Red
(Bar5)
Amber On Less than 5 percent of the power supplied budget remains. 5 percent is the
Green Blinking The Switch is transmitting/receiving to/from a 1000 Mbps Ethernet network.
Amber Blinking The Switch is transmitting/receiving to/from a 10 Mbps or a 100 Mbps Ethernet
Bar 1: PoE power usage is below 20 percent of the power supplied budget. Bar 2: PoE power usage is below 40 percent of the power supplied budget,
but over 20 percent of the power supplied budget. Bar 3: PoE power usage is below 60 percent of the power supplied budget,
but over 40 percent of the power supplied budget.
On PoE power usage is below 80 percent of the power supplied budget, but
over 60 percent of the power supplied budget.
On PoE power usage is more than 80 percent of the power supplied budget.
Blinking Less than 5 percent of the power supplied budget remains. 5 percent is the
default value.
Off PoE power usage is 0 percent of the power supplied budget.
default value.
Off The Switch has a sufficient power supplied budget.
On The link to a 1000 Mbps Ethernet network is up.
network.
On The link to a 10 Mbps or a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
PoE
1-8 (GS1920-8HPv2)
1-24 (GS1920­24HPv2)
1-48 (GS1920­48HPv2)
Dual Personality Interface
Ethernet Ports
9-10 (GS1920­8HPv2)
25-28 (GS1920­24v2/24HPv2)
45-48 (GS1920­48v2/48HPv2)
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.
Green Blinking The Switch is transmitting/receiving to/from a 1000 Mbps Ethernet network.
Amber Blinking The Switch is transmitting/receiving to/from a 10 Mbps or a 100 Mbps Ethernet
Off There is no power supplied.
On The link to a 1000 Mbps Ethernet network is up.
network.
On The link to a 10 Mbps or a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down.
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Chapter 3 Hardware Panels
Table 4 LED Descriptions (continued)
LED COLOR STATUS DESCRIPTION
SFP Slots
9-10 (GS1920­8HPv2)
25-28 (GS1920­24v2/24HPv2) 45-48 (GS1920­48v2/48HPv2)
SFP Slots
49-50 (GS1920­48v2/48HPv2)
Green On The uplink port is linking at 1000 Mbps.
Blinking The Switch is transmitting/receiving data 1000 Mbps.
Amber On The uplink port is linking at 100 Mbps.
Blinking The Switch is transmitting/receiving data 100 Mbps.
Off There is no link or port, the uplink port is shut down.
Green On The uplink port is linking at 1000 Mbps.
Blinking The Switch is transmitting/receiving data 1000 Mbps.
Amber On The uplink port is linking at 100 Mbps.
Blinking The Switch is transmitting/receiving data 100 Mbps.
Off There is no link or port, the uplink port is shut down.
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PART II

Technical Reference

43

4.1 Overview

This 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 9.0 and later versions, Mozilla Firefox 21 and later versions, Safari 6.0 and later versions or Google Chrome 26.0 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).
CHAPTER 4

The Web Configurator

4.2 System Login

1 Start your web browser.
2 The Switch is a DHCP client by default. Type “http://DHCP-assigned IP” in the Location or Address field.
Press [ENTER].
If the Switch is not connected to a DHCP server, type “http://” and the static IP address of the Switch (for example, the default management IP address is 192.168.1.1 through an in-band port) in the Location or Address field. Press [ENTER]. Your computer must be in the same subnet in order to access this website address.
Also, you can use the ZON Utility to check your Switch’s IP address.
3 The following screen appears.
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Chapter 4 The Web Configurator
Figure 26 Web Configurator: Visit NCC & Login
4 Click the Visit button if you want to open the Zyxel Nebula Control Center (NCC) login page in a new
tab or window. The NCC is an alternative cloud-based network management system that allows you to remotely manage and monitor the Switch. (see Section 1.1.1 on page 20).
Figure 27 Visit NCC
5 Alternatively, click Login to log into the web configurator to manage the Switch directly. The default
username is admin and associated default password is 1234.
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Chapter 4 The Web Configurator
Figure 28 Web Configurator: Login
6 After you log into the web configurator, you will see the following screen encouraging you to use NCC.
The screen has a QR code containing the Switch’s serial number and MAC address for handy NCC registration of the Switch using the Nebula Mobile app. First, download the app from the Google Play store for Android devices or the App Store for iOS devices and create an organization and site at NCC.
Figure 29 Web Configurator: Message
You may also access this screen at Basic Setting > Cloud Management > Nebula Switch Registration.
7 If you didn’t change the default administrator password and/or SNMP community values, a warning
screen displays each time you log into the web configurator. Click Password / SNMP to open a screen where you can change the administrator and SNMP passwords simultaneously. Otherwise, click Ignore to close it.
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Chapter 4 The Web Configurator
Figure 30 Web Configurator: Warning
Figure 31 Web Configurator: Password
Change the default administrator and/or SNMP passwords, and then click Apply to save your changes.
Table 5 Web Configurator: Password/SNMP
LABEL DESCRIPTION
Administrator
This is the default administrator account with the “admin” user name. You cannot change the default administrator user name. Only the administrator has read/write access.
Old Password Type the existing system password (1234 is the default password when shipped).
New Password Enter your new system password.
Retype to confirm Retype your new system password for confirmation
General Setting
Use this section to specify the SNMP version and community (password) values.
Version Select the SNMP version for the Switch. The SNMP version on the Switch must match the version
on the SNMP manager. Choose SNMP version 2c (v2c), SNMP version 3 (v3) or both (v3v2c).
Note: SNMP version 2c is backwards compatible with SNMP version 1.
Get Community Enter the Get Community string, which is the password for the incoming Get- and GetNext-
requests from the management station. The Get Community string is only used by SNMP managers using SNMP version 2c or lower.
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Chapter 4 The Web Configurator
A
B
G
C
D
E
F
H
Table 5 Web Configurator: Password/SNMP (continued)
LABEL DESCRIPTION
Set Community Enter the Set Community string, which is the password for the incoming Set- requests from the
management station. The Set Community string is only used by SNMP managers using SNMP version 2c or lower.
Trap Community Enter the Trap Community string, which is the password sent with each trap to the SNMP
manager. The Trap Community string is only used by SNMP managers using SNMP version 2c or lower.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.

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 32 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.
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B, C, D, E, F, G - These are quick links which allow you to perform certain tasks no matter which screen you are currently working in.
B - Click this link to update the information in the screen you are viewing currently.
C - Click this link to save your configuration into the Switch’s nonvolatile memory. Nonvolatile memory is
the configuration of your Switch that stays the same even if the Switch’s power is turned off.
D - Click this link to go to the status page of the Switch.
E - Click this link to log out of the web configurator.
F - Click this link to display web help pages. The help pages provide descriptions for all of the
configuration screens.
G - Click this link to go to the NCC (Nebula Control Center) portal website.
H - Click this link to go to the ZON Neighbor Management screen where you can see and manage
neighbor devices learned by the Switch.
In the navigation panel, click a main link to reveal a list of submenu links.
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Chapter 4 The Web Configurator
Table 6 Navigation Panel Sub-links Overview
BASIC SETTING ADVANCED APPLICATION IP APPLICATION MANAGEMENT
The following table describes the links in the navigation panel.
Table 7 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
IP Setup This link takes you to a screen where you can configure the IP address and subnet mask
Port Setup This link takes you to a screen where you can configure settings for individual Switch ports.
PoE Setup For PoE model(s).
Interface Setup This link takes you to a screen where you can configure settings for individual interface type
type, GARP and priority queues.
(necessary for Switch management) and set up to 64 IP routing domains.
This link takes you to a screen where you can set priorities, PoE power-up settings and schedule so that the Switch is able to reserve and allocate power to certain PDs.
and ID.
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Table 7 Navigation Panel Links (continued)
LINK DESCRIPTION
IPv6 This link takes you to a screen where you can view IPv6 status and configure IPv6 settings.
DNS This link takes you to a screen where you can configure DNS (domain name server) IP
addresses.
Cloud Management
Advanced Application
VLAN This link takes you to screens where you can configure port-based or 802.1Q VLAN (depending
Static MAC Forwarding
Static Multicast Forwarding
Filtering This link takes you to a screen to set up filtering rules.
Spanning Tree Protocol
Bandwidth Control
Broadcast Storm Control
Mirroring This link takes you to screens where you can copy traffic from one port or ports to another port
Link Aggregation This link takes you to screens where you can logically aggregate physical links to form one
Port Authentication
Port Security This link takes you to screens where you can activate MAC address learning and set the
Time Range This link takes you to a screen where you can define different schedules.
Classifier This link takes you to screens where you can configure the Switch to group packets based on
Policy Rule This link takes you to a screen where you can configure the Switch to perform special treatment
Queuing Method This link takes you to a screen where you can configure queuing with associated queue
Multicast This link takes you to screens where you can configure various multicast features, IGMP
AAA This link takes you to a screen where you can configure authentication, authorization and
IP Source Guard This link takes you to screens where you can configure filtering of unauthorized DHCP and ARP
Loop Guard This link takes you to a screen where you can configure protection against network loops that
Layer 2 Protocol Tunneling
This screen displays a link to a screen where you can enable or disable the Nebula Center Control Discovery feature. If it’s enabled, you can have the Switch search for the NCC (Nebula Control Center). Another link takes you to a Nebula Switch Registration screen which has a QR code containing the Switch’s serial number and MAC address for handy registration of the Switch at NCC.
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.
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.
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.
This link takes you to screens where you can configure the RSTP/MRSTP/MSTP to prevent network loops.
This link takes you to a screen where you can configure bandwidth limits on the Switch.
This link takes you to a screen to set up broadcast filters.
in order that you can examine the traffic from the first port without interference.
logical, higher-bandwidth link.
This link takes you to a screen where you can configure IEEE 802.1x port authentication for clients communicating via the Switch.
maximum number of MAC addresses to learn on a port.
the specified criteria.
on the grouped packets.
weights for each port.
snooping, MLD snooping-proxy and create multicast VLANs.
accounting 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).
packets in your network.
occur on the edge of your network.
This link takes you to a screen where you can configure L2PT (Layer 2 Protocol Tunneling) settings on the Switch.
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Chapter 4 The Web Configurator
Table 7 Navigation Panel Links (continued)
LINK DESCRIPTION
PPPoE This link takes you to screens where you can configure intermediate agent settings in port,
VLAN, and PPPoE.
Errdisable This link takes you to screens where you can view errdisable status and configure errdisable
settings in CPU protection, errdisable detect, and errdisable recovery.
Private VLAN This link takes you to a screen where you can configure private VLANs.
Green Ethernet This link takes you to a screen where you can configure green Ethernet settings in EEE, auto
LLDP This link takes you to screens where you can configure LLDP settings.
OAM This link takes you to screens where you can enable Ethernet OAM on the Switch, view the
IP Application
Static Routing This link takes you to a screen where you can configure IPv4 static routes. A static route defines
DiffServ This link takes you to screens where you can enable DiffServ, configure marking rules and set
DHCP This link takes you to screens where you can configure the DHCP settings.
ARP Setup This link takes you to screens where you can configure the ARP learning settings for each port.
Management
Maintenance This link takes you to screens where you can perform firmware and configuration file
Access Control This link takes you to screens where you can change the system login password and configure
Diagnostic This link takes you to a screen where you can ping IP addresses, run traceroute, test port(s) and
System Log This link takes you to a screen where you can view system logs.
Syslog Setup This link takes you to a screen where you can setup system logs and a system log server.
Cluster Management
MAC Table This link takes you to a screen where you can view the MAC addresses (and types) of devices
ARP Table This link takes you to a screen where you can view the MAC addresses – IP address resolution
Path MTU Table This link takes you to a screen where you can view the path MTU aging time, index, destination
Configure Clone This link takes you to a screen where you can copy attributes of one port to other ports.
IPv6 Neighbor Table
Port Status This link takes you to a screen where you can view the port statistics.
power down, and short reach for each port.
configuration of ports on which Ethernet OAM is enabled and perform remote-loopback tests.
how the Switch should forward traffic by configuring the TCP/IP parameters manually.
DSCP-to-IEEE802.1p mappings.
maintenance as well as reboot the system.
SNMP and remote management.
show the Switch’s location.
This link takes you to screens where you can configure clustering management and view its status.
attached to what ports and VLAN IDs.
table.
address, MTU, and expire settings.
This link takes you to a screen where you can view the IPv6 neighbor table which includes index, interface, neighbor address, MAC address, status and type.
4.3.1 Change Your Password
After you log in for the first time, it is recommended you change the default administrator password. Click Management > Access Control > Logins to display the next screen.
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Chapter 4 The Web Configurator
Figure 33 Change Administrator Login Password

4.4 Saving Your Configuration

When you are done modifying the settings in a screen, click Apply to save your changes back to the run-time memory. Settings in the run-time memory are lost when the Switch’s power is turned off.
Click the Save link in the upper right hand corner of the web configurator to save your configuration to nonvolatile memory. Nonvolatile memory refers to the Switch’s storage that remains even if the Switch’s power is turned off.
Note: Use the Save link when you are done with a configuration session.

4.5 Switch Lockout

You could block yourself (and all others) from managing the Switch if you do one of the following:
1 Delete or modify the management VLAN (default is VLAN 1).
2 Delete all port-based VLANs with the CPU port as a member. The “CPU port” is the management port of
the Switch.
3 Filter all traffic to the CPU port.
4 Disable all ports.
5 Misconfigure the text configuration file.
6 Forget the password and/or IP address.
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7 Prevent all services from accessing the Switch.
8 Change a service port number but forget it.
9 You forgot to log out of the Switch from a computer before logging in again on another computer.
Note: Be careful not to lock yourself and others out of the Switch.

4.6 Resetting the Switch

If you lock yourself (and others) from the Switch or forget the administrator password, you will need to reload the factory-default configuration file or reset the Switch back to the factory defaults.
4.6.1 The Restore Button
Press the RESTORE button for more than seven seconds to have the Switch automatically reboot and restore the factory default file. See Section 3.3 on page 40 for more information about the LED behavior.
4.6.2 Restore Custom Default
Press the RESTORE button for three to seven seconds to have the Switch automatically reboot and restore the last-saved custom default file. See Section 3.3 on page 40 for more information about the LED behavior.
4.6.3 Reboot the Switch
Press the RESET button to reboot the Switch without turning the power off. See Section 3.3 on page 40 for more information about the LED behavior.

4.7 Logging Out of the Web Configurator

Click Logout in a screen to exit the web configurator. You have to log in with your password again after you log out. This is recommended after you finish a management session for security reasons.
Figure 34 Web Configurator: Logout Screen
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4.8 Help

The web configurator’s online help has descriptions of individual screens and some supplementary information.
Click the Help link from a web configurator screen to view an online help description of that screen.
Chapter 4 The Web Configurator
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5.1 Overview

This chapter shows how to set up the Switch for an example network.
The following lists the configuration steps for the initial setup:
• Creating a VLAN
• Setting Port VID
• Configuring Switch Management IP Address
Chapter 5 Initial Setup Example
CHAPTER 5

Initial Setup Example

5.1.1 Creating a VLAN
VLANs confine broadcast frames to the VLAN group in which the port(s) belongs. You can do this with port-based VLAN or tagged static VLAN with fixed port members.
In this example, you want to configure port 1 as a member of VLAN 2.
Figure 35 Initial Setup Network Example: VLAN
1 Click Advanced Application > VLAN > VLAN Configuration in the navigation panel and click the Static
VLAN Setup link.
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Chapter 5 Initial Setup Example
2 In the Static VLAN screen, select ACTIVE, enter a
descriptive name in the Name field and enter 2 in the VLAN Group ID field for the VLAN2 network.
Note: The VLAN Group ID field in this screen and the VID field in the IP Setup screen refer to the
same VLAN ID.
3 Since the VLAN2 network is connected to port 1 on the Switch, select Fixed to configure port 1 to be a
permanent member of the VLAN only.
4 To ensure that VLAN-unaware devices (such as computers and hubs) can receive frames properly, clear
the TX Tagging check box to set the Switch to remove VLAN tags before sending.
5 Click Add to save the settings to the run-time memory. Settings in the run-time memory are lost when the
Switch’s power is turned off.
5.1.2 Setting Port VID
Use PVID to add a tag to incoming untagged frames received on that port so that the frames are forwarded to the VLAN group that the tag defines.
In the example network, configure 2 as the port VID on port 1 so that any untagged frames received on that port get sent to VLAN 2.
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Figure 36 Initial Setup Network Example: Port VID
1 Click Advanced Applications > VLAN > VLAN
Configuration in the navigation panel. Then click the VLAN Port Setup link.
2 Enter 2 in the PVID field for port 2 and click
Apply to save your changes back to the run-
time memory. Settings in the run-time memory are lost when the Switch’s power is turned off.
5.1.3 Configuring Switch Management IP Address
The default management IP address of the Switch is 192.168.1.1. You can configure another IP address in a different subnet for management purposes. The following figure shows an example.
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Chapter 5 Initial Setup Example
Figure 37 Initial Setup Example: Management IP Address
1 Connect your computer to any Ethernet port on the Switch. Make sure your computer is in the same
subnet as the Switch.
2 Open your web browser and enter 192.168.1.1 (the default IP address) in the address bar to access the
web configurator. See Section 4.2 on page 44 for more information.
3 Click Basic Setting > IP Setup in the navigation
panel.
4 Configure the related fields in the IP Setup screen.
5 For the VLAN2 network, enter 192.168.2.1 as the IP
address and 255.255.255.0 as the subnet mask.
6 In the VID field, enter the ID of the VLAN group to
which you want this management IP address to belong. This is the same as the VLAN ID you configure in the Static VLAN screen.
7 Click Add to save your changes back to the run-
time memory. Settings in the run-time memory are lost when the Switch’s power is turned off.
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6.1 Overview

This chapter provides some examples of using the web configurator to set up and use the Switch. The tutorials include:
• How to Use DHCPv4 Snooping on the Switch
• How to Use DHCPv4 Relay on the Switch
Chapter 6 Tutorials
CHAPTER 6

Tutorials

6.2 How to Use DHCPv4 Snooping on the Switch

You only want DHCP server A connected to port 5 to assign IP addresses to all devices in VLAN network (V). Create a VLAN containing ports 5, 6 and 7. Connect a computer M to the Switch for management.
Figure 38 Tutorial: DHCP Snooping Tutorial Overview
Note: For related information about DHCP snooping, see Section 26.1 on page 235.
The settings in this tutorial are as the following.
Table 8 Tutorial: Settings in this Tutorial
HOST PORT CONNECTED VLAN PVID DHCP SNOOPING PORT TRUSTED
DHCP Server (A) 5 1 and 100 100 Yes DHCP Client (B) 6 1 and 100 100 No DHCP Client (C) 7 1 and 100 100 No
1 Access the Switch through http://192.168.1.1 by default. Log into the Switch by entering the username
(default: admin) and password (default: 1234).
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Chapter 6 Tutorials
2 Go to Advanced Application > VLAN > VLAN Configuration > Static VLAN Setup, and create a VLAN with
ID of 100. Add ports 5, 6 and 7 in the VLAN by selecting Fixed in the Control field as shown. Deselect Tx Tagging because you don’t want outgoing traffic to contain this VLAN tag. Click Add. Figure 39 Tutorial: Create a VLAN and Add Ports to It
3 Go to Advanced Application > VLAN > VLAN Configuration > VLAN Port Setup, and set the PVID of the
ports 5, 6 and 7 to 100. This tags untagged incoming frames on ports 5, 6 and 7 with the tag 100. Figure 40 Tutorial: Tag Untagged Frames
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4 Go to Advanced Application > IP Source Guard > IPv4 Source Guard Setup > DHCP Snooping >
Configure, activate and specify VLAN 100 as the DHCP VLAN as shown. Click Apply. Figure 41 Tutorial: Specify DHCP VLAN
5 Click the Port link at the top right corner.
6 The DHCP Snooping Port Configure screen appears. Select Trusted in the Server Tr usted state field for port
5 because the DHCP server is connected to port 5. Keep ports 6 and 7 Untrusted because they are connected to DHCP clients. Click Apply.
Figure 42 Tutorial: Set the DHCP Server Port to Trusted
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Chapter 6 Tutorials
7 Go to Advanced Application > IP Source Guard > IPv4 Source Guard Setup > DHCP Snooping >
Configure > VLAN, show VLAN 100 by entering 100 in the Start VID and End VID fields and click Apply.
Then select Yes in the Enabled field of the VLAN 100 entry shown at the bottom section of the screen.
If you want to add more information in the DHCP request packets such as source VLAN ID or system name, you can also select an Option82 Profile in the entry. See Section 26.11.1.3 on page 256.
Figure 43 Tutorial: Enable DHCP Snooping on this VLAN
8 Click Save at the top right corner of the web configurator to
save the configuration permanently.
9 Connect your DHCP server to port 5 and a computer (as DHCP client) to either port 6 or 7. The computer
should be able to get an IP address from the DHCP server. If you put the DHCP server on port 6 or 7, the computer will not able to get an IP address.
10 To check if DHCP snooping works, go to Advanced Application > IP Source Guard > IPv4 Source Guard
Setup, you should see an IP assignment with the type DHCP-Snooping as shown. Figure 44 Tutorial: Check the Binding If DHCP Snooping Works
You can also telnet. Use the command “show dhcp snooping binding” to see the DHCP snooping binding table as shown next.
sysname# show dhcp snooping binding MacAddress IpAddress Lease Type VLAN Port
----------------- --------------- ------------ ------------- ---- ----­ 00:02:00:00:00:1c 10.10.1.16 6d23h59m20s dhcp-snooping 100 7 Total number of bindings: 1

6.3 How to Use DHCPv4 Relay on the Switch

This tutorial describes how to configure your Switch to forward DHCP client requests to a specific DHCP server. The DHCP server can then assign a specific IP address based on the information in the DHCP requests.
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Chapter 6 Tutorials
6.3.1 DHCP Relay Tutorial Introduction
In this example, you have configured your DHCP server (192.168.2.3) and want to have it assign a specific IP address (say 172.16.1.18) to DHCP client A based on the system name, VLAN ID and port number in the DHCP request. Client A connects to the Switch’s port 2 in VLAN 102.
Figure 45 Tutorial: DHCP Relay Scenario
6.3.2 Creating a VLAN
Follow the steps below to configure port 2 as a member of VLAN 102.
1 Access the web configurator through the Switch’s management port.
2 Go to Basic Setting > Switch Setup and set the VLAN type to 802.1Q. Click Apply to save the settings to
the run-time memory. Figure 46 Tutorial: Set VLAN Type to 802.1Q
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3 Click Advanced Application > VLAN > VLAN Configuration > Static VLAN Setup.
4 In the Static VLAN screen, select ACTIVE, enter a descriptive name (VLAN 102 for example) in the Name
field and enter 102 in the VLAN Group ID field.
5 Select Fixed to configure port 2 to be a permanent member of this VLAN.
6 Clear the TX Tagging check box to set the Switch to remove VLAN tags before sending.
7 Click Add to save the settings to the run-time memory. Settings in the run-time memory are lost when the
Switch’s power is turned off. Figure 47 Tutorial: Create a Static VLAN
8 Click the VLAN Configuration link in the Static VLAN Setup screen and then the VLAN Port Setup link in the
VLAN Configuration screen. Figure 48 Tutorial: Click the VLAN Port Setting Link
9 Enter 102 in the PVID field for port 2 to add a tag to incoming untagged frames received on that port so
that the frames are forwarded to the VLAN group that the tag defines.
10 Click Apply to save your changes back to the run-time memory.
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Figure 49 Tutorial: Add Tag for Frames Received on Port 2
11 Click the Save link in the upper right corner of the web configurator to save your configuration
permanently.
6.3.3 Configuring DHCPv4 Relay
Follow the steps below to enable DHCP relay on the Switch and allow the Switch to add relay agent information (such as the VLAN ID) to DHCP requests.
1 Click IP Application > DHCP > DHCPv4 and then the Global link to open the DHCP Relay screen.
2 Select the Active check box.
3 Enter the DHCP server’s IP address (192.168.2.3 in this example) in the Remote DHCP Server 1 field.
4 Select default1 or default2 in the Option 82 Profile field.
5 Click Apply to save your changes back to the run-time memory.
Figure 50 Tutorial: Set DHCP Server and Relay Information
6 Click the Save link in the upper right corner of the web configurator to save your configuration
permanently.
7 The DHCP server can then assign a specific IP address based on the DHCP request.
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6.3.4 Troubleshooting
Check the client A’s IP address. If it did not receive the IP address 172.16.1.18, make sure:
1 Client A is connected to the Switch’s port 2 in VLAN 102.
2 You configured the correct VLAN ID, port number and system name for DHCP relay on both the DHCP
server and the Switch.
3 You clicked the Save link on the Switch to have your settings take effect.
Chapter 6 Tutorials
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7.1 Overview

This chapter describes the screens for System Status, ZON Utility, and ZON Neighbor Management.
7.1.1 What You Can Do
• Use the Status screen (Section 7.2 on page 68) to see the Switch’s general device information, system status, and IP addresses. You can also display other status screens for more information.
• Use the ZON Utility screen (Section 7.3 on page 70) to deploy and manage network devices.
• Use the Neighbor screen (Section 7.4 on page 75) to view and manage Switch’s neighbor devices.
Chapter 7 Status and ZON
CHAPTER 7

Status and ZON

7.2 Status

The Status screen displays when you log into the Switch or click Status at the top right corner of the web configurator. The Status screen displays general device information, system status, and its IP addresses.
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Figure 51 Status (for PoE model(s))
The following table describes the labels in this screen.
Table 9 Status
LABEL DESCRIPTION
Device Information
Device Type This field displays the model name of this Switch.
System Name This field displays the name used to identify the Switch on any network.
Boot Version This field displays the version number and date of the boot module that is currently on the
System Location This field displays the geographic location of your Switch. You can change the setting in the
Firmware Version
System Time This field displays the current date and time in the UAG. The format is mm-dd-yyyy hh:mm:ss.
Hardware Version
System Up Time This field displays how long the Switch has been running since it last restarted or was turned on.
MAC Address This field displays the MAC addresses of the Switch.
Login Timeout(mins)
Serial Number This field displays the serial number of this Switch. The serial number is used for device tracking
Registration MAC Address
Switch.
Basic Setting > General Setup screen.
This field displays the version number and date of the firmware the Switch is currently running.
This field displays the hardware version number of the Switch. The integer is the model version, and the decimal is the version of the hardware change. For example, V2.0 is a hardware version for the Switch where 2 identifies the GS1920v2 Series, and .0 is the first hardware change.
This field displays how many minutes a management session can be left idle before the session times out. After it times out you have to log in with your password again.
and control.
This field displays the MAC address of the Switch that you must use to register at myZyxel.com or the NCC (Nebula Control Center).
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Table 9 Status (continued)
LABEL DESCRIPTION
Hybrid Mode This field displays whether the Switch is in standalone mode or cloud mode. In standalone mode
you can see a link to a QR code to register the Switch to use NCC (Nebula Control Center).
Cloud Control Status
PoE Usage This field displays the amount of power the Switch is currently supplying to the connected PoE-
Detail Click this link to go to the Basic Setting > System Info screen to check other detailed information,
IP Address Information
IPv4 Address This field displays the Switch’s current IPv4 address.
Subnet Mask This field displays the Switch’s subnet mask.
Default Gateway
IP Setup Click the link to go to the Basic Setting > IP Setup screen.
IPV6 Global Unicast Address
IPV6 Link-Local Address
IPv6 configuration
Device Status and Quick Configuration
Quick Links This section provides the shortcut link to a specific configuration screen.
This field displays the registration and connection status between the Switch and the NCC (Nebula Control Center). See Section 3.3 on page 40 for more information on the Cloud LED.
In standalone mode, the status will display Disconnected or Unregistered. In cloud mode the status will display Connected or Disconnected.
Connected - The Switch is registered with and connected to the NCC. Disconnected - The Switch is not connected to the NCC. Unregistered - The Switch is not registered with the NCC.
enabled devices.
such as system resource usage and the Switch temperature, fan speeds or voltage.
This field displays the IP address of the Switch’s default gateway.
This field displays the Switch’s IPv6 global unicast address
This field displays the Switch’s IPv6 link-local address.
Click the link to go to the Basic Setting > IPv6 screen.
This section shows whether a feature is enabled or not on the Switch. You can click a feature’s Setting link to go to the configuration screen for the feature.
Hover your cursor over a red exclamation mark to display information about the feature.

7.3 Zyxel One Network (ZON) Utility

ZON Utility is a program designed to help you deploy and manage a network more efficiently. It detects devices automatically and allows you to do basic settings on devices in the network without having to be near it.
The ZON Utility issues requests via Zyxel Discovery Protocol (ZDP) and in response to the query, the device responds back with basic information including IP address, firmware version, location, system and model name in the same broadcast domain. The information is then displayed in the ZON Utility screen and you can perform tasks like basic configuration of the devices and batch firmware upgrade in it. You can download the ZON Utility at www.zyxel.com and install it on a PC (Windows operating system).
7.3.1 Requirements
Before installing the ZON Utility on your PC, please make sure it meets the requirements listed below.
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Operating System
At the time of writing, the ZON Utility is compatible with:
• Windows 7 (both 32-bit / 64-bit versions)
• Windows 8 (both 32-bit / 64-bit versions)
• Windows 8.1 (both 32-bit / 64-bit versions)
• Window 10 (both 32-bit / 64-bit versions)
Note: To check for your Windows operating system version, right-click on My Computer >
Properties. You should see this information in the General tab.
Hardware
Here are the minimum hardware requirements to use the ZON Utility on your PC.
• Core i3 processor
•2GB RAM
• 100MB free hard disk
• WXGA (Wide XGA 1280x800)
7.3.2 Run the ZON Utility
1 Double-click the ZON Utility to run it.
2 The first time you run the ZON Utility, you will see if your device and firmware version support the ZON
Utility. Click the OK button to close this screen.
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Figure 52 Supported Devices and Versions
If you want to check the supported models and firmware versions later, you can click the Show
information about ZON icon in the upper right hand corner of the screen. Then select the Supported model and firmware version link. If your device is not listed here, see the device release notes for ZON
utility support. The release notes are in the firmware zip file on the Zyxel web site.
Figure 53 ZON Utility Screen
3 Select a network adapter to which your supported devices are connected.
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2
3
4
56
7
8
9
10 11 12 13
Figure 54 Network Adapter
4 Click the Go button for the ZON Utility to discover all supported devices in your network.
Figure 55 Discovery
5 The ZON Utility screen shows the devices discovered.
Figure 56 ZON Utility Screen
6 Select a device and then use the icons to perform actions. Some functions may not be available for
your devices.
Note: You must know the selected device admin password before taking actions on the
device using the ZON utility icons.
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Figure 57 Password Prompt
The following table describes the icons numbered from left to right in the ZON Utility screen.
Table 10 ZON Utility Icons
ICON DESCRIPTION
1 IP configuration Change the selected device’s IP address.
2 Renew IP Address Update a DHCP-assigned dynamic IP address.
3 Reboot Device Use this icon to restart the selected device(s). This may be useful when troubleshooting
or upgrading new firmware.
4 Reset Configuration to Default
5 Locator LED Use this icon to locate the selected device by causing its Locator LED to blink.
6 Web GUI Use this to access the selected device web configurator from your browser. You will
7 Firmware Upgrade Use this icon to upgrade new firmware to selected device(s) of the same model. Make
8 Change Password Use this icon to change the admin password of the selected device. You must know
9 Configure NCC Discovery
10 ZAC Use this icon to run the Zyxel AP Configurator of the selected AP.
11 Clear and Rescan Use this icon to clear the list and discover all devices on the connected network
12 Save Configuration Use this icon to save configuration changes to permanent memory on a selected
13 Settings Use this icon to select a network adaptor for the computer on which the ZON utility is
Use this icon to reload the factory-default configuration file. This means that you will lose all previous configurations.
need a username and password to log in.
sure you have downloaded the firmware from the Zyxel website to your computer and unzipped it in advance.
the current admin password before changing to a new one.
You must have Internet access to use this feature. Use this icon to enable or disable the Nebula Control Center (NCC) discovery feature on the selected device. If it’s enabled, the selected device will try to connect to the NCC. Once the selected device is connected to and has registered in the NCC, it’ll go into the Nebula cloud management mode.
again.
device.
installed, and the utility language.
The following table describes the fields in the ZON Utility main screen.
Table 11 ZON Utility Fields
LABEL DESCRIPTION
Type This field displays an icon of the kind of device discovered.
Model This field displays the model name of the discovered device.
Firmware Version This field displays the firmware version of the discovered device.
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Table 11 ZON Utility Fields
LABEL DESCRIPTION
MAC Address This field displays the MAC address of the discovered device.
IP Address This field displays the IP address of an internal interface on the discovered device that
first received an ZDP discovery request from the ZON utility.
System Name This field displays the system name of the discovered device.
Location This field displays where the discovered device is.
Status This field displays whether changes to the discovered device have been done
successfully. As the Switch does not support IP Configuration, Renew IP address and Flash Locator LED, this field displays “Update failed”, “Not support Renew IP address” and “Not support Flash Locator LED” respectively.
NCC Discovery This field displays if the discovered device supports the Nebula Control Center (NCC)
discovery feature. If it’s enabled, the selected device will try to connect to the NCC. Once the selected device is connected to and has registered in the NCC, it’ll go into the Nebula cloud management mode.
Serial Number Enter the admin password of the discovered device to display its serial number.
Hardware Version This field displays the hardware version of the discovered device.

7.4 ZON Neighbor Management Screen

The ZON Neighbor Management screen allows you to view and manage the Switch’s neighboring devices more conveniently. It uses Layer Link Discovery Protocol (LLDP) to discover all neighbor devices connected to the Switch including non-Zyxel devices. You can perform tasks on the neighboring devices like login, reboot (turn the power off and then back on again), and reset to factory default settings in the Neighbor Management screen. For more information on LLDP, see (Section 33.1 on page
285).
Click Status > Neighbor to see the following screen.
Figure 58 Status > Neighbor
The following table describes the fields in the above screen.
Table 12 Status > Neighbor
LABEL DESCRIPTION
Local
Port This shows the port of the Switch, on which the neighboring device is discovered.
Desc. This shows the port description of the Switch.
PoE Draw This shows the consumption that the neighboring device connected to this port draws
from the Switch. This allows you to plan and use within the power budget of the Switch.
Remote
Port This show the number of the neighbor device’s port which is connected to the Switch.
Desc. This shows the description of the neighbor device’s port which is connected to the
Switch.
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Table 12 Status > Neighbor
LABEL DESCRIPTION
Model This shows the model name of the neighbor device. This field will show “-” for non-Zyxel
devices.
System Name This shows the system name of the neighbor device.
Location This shows the geographic location of the neighbor device. Firmware This shows the firmware version of the neighbor device. This field will show “-” for non-Zyxel
devices.
IP This shows the IP address of the neighbor device. The IP address is a hyper link that you
MAC This shows the MAC address of the neighbor device. This field will show “-” for non-Zyxel
PWR Cycle Click the Cycle button to turn OFF the power of the neighbor device and turn it back ON
can click to log into and manage the neighbor device through its web configurator. This field will show “-” for non-Zyxel devices.
devices.
again. A count down button (from 5 to 0) starts.
Note:
• The Switch must support power sourcing (PSE) or the network device is a powered device (PD).
• If multiple neighbor devices use the same port, the Cycle button is displayed only on the first device, others will show “-” instead.
Reset to Default Click the Reset button to reset the neighbor device to its factory default settings. A
warning message “Are you sure you want to load factory default?” appears prompting you to confirm the action. After confirming the action a count down button (from 5 to 0) starts.
Note:
• The Switch must support power sourcing (PSE) or the network device is a powered device (PD).
• If multiple neighbor devices use the same port, the Reset button is not available and will show “-” instead.
• You can only reset Zyxel products.
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8.1 Overview

This chapter describes how to configure the System Info, General Setup, Switch Setup, IP Setup, Port Setup, PoE, Interface Setup and IPv6 screens.
8.1.1 What You Can Do
• Use the System Info screen (Section 8.2 on page 77) to check the firmware version number.
• Use the General Setup screen (Section 8.3 on page 79) to configure general settings such as the
system name and time.
• Use the Switch Setup screen (Section 8.5 on page 82) to choose your VLAN type, set the GARP timers
and assign priorities to queues.
• Use the IP Setup screen (Section 8.6 on page 83) to configure the Switch IP address, default gateway
device, and the management VLAN ID.
• Use the Port Setup screen (Section 8.7 on page 85) to configure Switch port settings.
• Use the PoE Status screens (Section 8.8 on page 87) to view the current amount of power that PDs are
receiving from the Switch and set the priority levels for the Switch in distributing power to PDs. This screen is available for PoE model(s) only.
• Use the Interface Setup screens (Section 8.9 on page 92) to configure Switch interface type and
interface ID settings.
• Use the IPv6 screens (Section 8.10 on page 93) to view IPv6 status and IPv6 configuration.
• Use the DNS screen (Section 8.11 on page 104) to configure the default domain name server.
• Use the Cloud Management screen (Section 8.12 on page 104) to display links to Nebula Center Control Discovery and Nebula Switch Registration screens.
Chapter 8 Basic Setting
CHAPTER 8

Basic Setting

8.2 System Information

In the navigation panel, click Basic Setting > System Info to display the screen as shown. Use this screen to view general system information. You can check the firmware version number.
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Chapter 8 Basic Setting
Figure 59 Basic Setting > System Info (for PoE model(s) only)
The following table describes the labels in this screen.
Table 13 Basic Setting > System Info
LABEL DESCRIPTION
System Name This field displays the descriptive name of the Switch for identification purposes.
Product Model This field displays the product model of the Switch. Use this information when searching for
firmware upgrade or looking for other support information in the website.
ZyNOS F/W Version
Ethernet Address
CPU Utilization CPU utilization quantifies how busy the system is. Current (%) displays the current percentage of
Memory Utilization
Name This field displays the name of memory pool.
Total (byte) This field displays the total number of bytes in this memory pool.
Used (byte) This field displays the number of bytes being used in this memory pool.
Utilization (%)
Hardware Monitor
Temperature Unit
This field displays the version number of the Switch 's current firmware including the date created.
This field refers to the Ethernet MAC (Media Access Control) address of the Switch.
CPU utilization.
Memory utilization shows how much DRAM memory is available and in use. It also displays the current percentage of memory utilization.
This field displays the percentage (%) of memory being used in this memory pool.
The Switch has temperature sensors that are capable of detecting and reporting if the temperature rises above the threshold. You may choose the temperature unit (Centigrade or Fahrenheit) in this field.
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Chapter 8 Basic Setting
Table 13 Basic Setting > System Info (continued)
LABEL DESCRIPTION
Temperature (C)
Current This shows the current temperature at this sensor.
MAX This field displays the maximum temperature measured at this sensor.
MIN This field displays the minimum temperature measured at this sensor.
Threshold This field displays the upper temperature limit at this sensor. Status This field displays Normal for temperatures below the threshold and Error for those above.
Fan Speed (RPM)
Current This field displays this fan's current speed in Revolutions Per Minute (RPM).
MAX This field displays this fan's maximum speed measured in Revolutions Per Minute (RPM).
MIN This field displays this fan's minimum speed measured in Revolutions Per Minute (RPM). "<41" is
Threshold This field displays the minimum speed at which a normal fan should work. Status Normal indicates that this fan is functioning above the minimum speed. Error indicates that this
Voltage(V) The power supply for each voltage has a sensor that is capable of detecting and reporting if the
Current This is the current voltage reading.
MAX This field displays the maximum voltage measured at this point.
MIN This field displays the minimum voltage measured at this point.
Threshold This field displays the percentage tolerance of the voltage with which the Switch still works. Status Normal indicates that the voltage is within an acceptable operating range at this point;
BOARD, MAC and PHY refer to the location of the temperature sensors on the Switch printed circuit board.
A properly functioning fan is an essential component (along with a sufficiently ventilated, cool operating environment) in order for the device to stay within the temperature threshold. Each fan has a sensor that is capable of detecting and reporting if the fan speed falls below the threshold shown.
displayed for speeds too small to measure (under 2000 RPM).
fan is functioning below the minimum speed.
voltage falls out of the tolerance range.
otherwise Error is displayed.

8.3 General Setup

Use this screen to configure general settings such as the system name and time. Click Basic Setting > General Setup in the navigation panel to display the screen as shown.
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Chapter 8 Basic Setting
Figure 60 Basic Setting > General Setup
The following table describes the labels in this screen.
Table 14 Basic Setting > General Setup
LABEL DESCRIPTION
System Name Choose a descriptive name for identification purposes. This name consists of up to 64 printable
characters; spaces are allowed.
Location Enter the geographic location of your Switch. You can use up to 32 printable ASCII characters;
spaces are allowed.
Contact Person's Name
Use Time Server when Bootup
Time Server IP Address
Current Time This field displays the time you open this menu (or refresh the menu).
New Time (hh:min:ss)
Current Date This field displays the date you open this menu.
New Date (yyyy­mm-dd)
Time Zone Select the time difference between UTC (Universal Time Coordinated, formerly known as GMT,
Enter the name of the person in charge of this Switch. You can use up to 32 printable ASCII characters; spaces are allowed.
Enter the time service protocol that your time server uses. Not all time servers support all protocols, so you may have to use trial and error to find a protocol that works. The main differences between them are the time format.
When you select the Daytime (RFC 867) format, the Switch displays the day, month, year and time with no time zone adjustment. When you use this format it is recommended that you use a Daytime timeserver within your geographical time zone.
Time (RFC-868) format displays a 4-byte integer giving the total number of seconds since 2016/ 1/1 at 0:0:0.
NTP (RFC-1305) is similar to Time (RFC-868). None is the default value. Enter the time manually. Each time you turn on the Switch, the time
and date will be reset to 2016-1-1 0:0:0.
Enter the IP address or domain name of your timeserver. The Switch searches for the timeserver for up to 60 seconds. If you select a timeserver that is unreachable, then this screen will appear locked for 60 seconds. Please wait.
Enter the new time in hour, minute and second format. The new time then appears in the Current Time field after you click Apply.
Enter the new date in year, month and day format. The new date then appears in the Current Date field after you click Apply.
Greenwich Mean Time) and your time zone from the drop-down list box.
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Table 14 Basic Setting > General Setup (continued)
LABEL DESCRIPTION
Daylight Saving Time
Start Date Configure the day and time when Daylight Saving Time starts if you selected Daylight Saving
End Date Configure the day and time when Daylight Saving Time ends if you selected Daylight Saving
Daylight saving is a period from late spring to early fall when many countries set their clocks ahead of normal local time by one hour to give more daytime light in the evening.
Select this option if you use Daylight Saving Time.
Time. The time is displayed in the 24 hour format. Here are a couple of examples:
Daylight Saving Time starts in most parts of the United States on the second Sunday of March. Each time zone in the United States starts using Daylight Saving Time at 2 A.M. local time. So in the United States you would select Second, Sunday, March and 2:00.
Daylight Saving Time starts in the European Union on the last Sunday of March. All of the time zones in the European Union start using Daylight Saving Time at the same moment (1 A.M. GMT or UTC). So in the European Union you would select Last, Sunday, March and the last field depends on your time zone. In Germany for instance, you would select 2:00 because Germany's time zone is one hour ahead of GMT or UTC (GMT+1).
Time. The time field uses the 24 hour format. Here are a couple of examples:
Daylight Saving Time ends in the United States on the first Sunday of November. Each time zone in the United States stops using Daylight Saving Time at 2 A.M. local time. So in the United States you would select First, Sunday, November and 2:00.
Daylight Saving Time ends in the European Union on the last Sunday of October. All of the time zones in the European Union stop using Daylight Saving Time at the same moment (1 A.M. GMT or UTC). So in the European Union you would select Last, Sunday, October and the last field depends on your time zone. In Germany for instance, you would select 2:00 because Germany's time zone is one hour ahead of GMT or UTC (GMT+1).
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.

8.4 Introduction to VLANs

A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Devices on a logical network belong to one group. A device can belong to more than one group. With VLAN, a device cannot directly talk to or hear from devices that are not in the same group(s); the traffic must first go through a router.
In MTU (Multi-Tenant Unit) applications, VLAN is vital in providing isolation and security among the subscribers. When properly configured, VLAN prevents one subscriber from accessing the network resources of another on the same LAN, thus a user will not see the printers and hard disks of another user in the same building.
VLAN also increases network performance by limiting broadcasts to a smaller and more manageable logical broadcast domain. In traditional switched environments, all broadcast packets go to each and every individual port. With VLAN, all broadcasts are confined to a specific broadcast domain.
Note: VLAN is unidirectional; it only governs outgoing traffic.
See Chapter 9 on page 107 for information on port-based and 802.1Q tagged VLANs.
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8.5 Switch Setup

Click Basic Setting > Switch Setup in the navigation panel to display the screen as shown. The VLAN setup screens change depending on whether you choose 802.1Q or Port Based in the VLAN Type field in this screen. Refer to Chapter 9 on page 107 for more information on VLAN.
Figure 61 Basic Setting > Switch Setup
Chapter 8 Basic Setting
The following table describes the labels in this screen.
Table 15 Basic Setting > Switch Setup
LABEL DESCRIPTION
VLAN Type Choose 802.1Q or Port Based. The VLAN Setup screen changes depending on whether you
MAC Address Learning
Aging Time Enter a time from 10 to 1000000 seconds. This is how long all dynamically learned MAC
ARP Aging Time
Aging Time Enter a time from 60 to 1000000 seconds. This is how long dynamically learned ARP entries
GARP Timer: Switches join VLANs by making a declaration. A declaration is made by issuing a Join message using GARP. Declarations are withdrawn by issuing a Leave message. A Leave All message terminates all registrations. GARP timers set declaration timeout values. See the chapter on VLAN setup for more background information.
Join Timer Join Timer sets the duration of the Join Period timer for GVRP in milliseconds. Each port has a Join
Leave Timer Leave Time sets the duration of the Leave Period timer for GVRP in milliseconds. Each port has a
Leave All Timer Leave All Timer sets the duration of the Leave All Period timer for GVRP in milliseconds. Each port
choose 802.1Q VLAN type or Port Based VLAN type in this screen. See for more information.
MAC address learning reduces outgoing traffic broadcasts. For MAC address learning to occur on a port, the port must be active.
addresses remain in the MAC address table before they age out (and must be relearned).
remain in the ARP table before they age out (and must be relearned). The setting here applies to ARP entries which are newly added in the ARP table after you click Apply.
Period timer. The allowed Join Time range is between 100 and 65535 milliseconds; the default is 200 milliseconds. See the chapter on VLAN setup for more background information.
single Leave Period timer. Leave Time must be two times larger than Join Timer; the default is 600 milliseconds.
has a single Leave All Period timer. Leave All Timer must be larger than Leave Timer.
Chapter 9 on page 107
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Table 15 Basic Setting > Switch Setup (continued)
LABEL DESCRIPTION
Priority Queue Assignment
IEEE 802.1p defines up to eight separate traffic types by inserting a tag into a MAC-layer frame that contains bits to define class of service. Frames without an explicit priority tag are given the default priority of the ingress port. Use the next fields to configure the priority level-to-physical queue mapping.
The Switch has eight physical queues that you can map to the 8 priority levels. On the Switch, traffic assigned to higher index queues gets through faster while traffic in lower index queues is dropped if the network is congested.
Priority Level (The following descriptions are based on the traffic types defined in the IEEE 802.1d standard (which incorporates the 802.1p).
To map a priority level to a physical queue, select a physical queue from the drop-down menu on the right.
Priority 7 Typically used for network control traffic such as router configuration messages.
Priority 6 Typically used for voice traffic that is especially sensitive to jitter (jitter is the variations in delay).
Priority 5 Typically used for video that consumes high bandwidth and is sensitive to jitter.
Priority 4 Typically used for controlled load, latency-sensitive traffic such as SNA (Systems Network
Architecture) transactions.
Priority 3 Typically used for “excellent effort” or better than best effort and would include important
Priority 2 This is for “spare bandwidth”.
Priority 1 This is typically used for non-critical “background” traffic such as bulk transfers that are allowed
Priority 0 Typically used for best-effort traffic. Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
Cancel Click Cancel to reset the fields.
business traffic that can tolerate some delay.
but that should not affect other applications and users.
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.

8.6 IP Setup

Use the IP Setup screen to configure the Switch IP address, default gateway device, and the management VLAN ID. The default gateway specifies the IP address of the default gateway (next hop) for outgoing traffic.
8.6.1 Management IP Addresses
The Switch needs an IP address for it to be managed over the network. The factory default IP address is
192.168.1.1. The subnet mask specifies the network number portion of an IP address. The factory default
subnet mask is 255.255.255.0.
You can configure up to 64 IP addresses which are used to access and manage the Switch from the ports belonging to the pre-defined VLAN(s).
Note: You must configure a VLAN first. Each VLAN can only have one management IP
address.
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Figure 62 Basic Setting > IP Setup
Chapter 8 Basic Setting
The following table describes the labels in this screen.
Table 16 Basic Setting > IP Setup
LABEL DESCRIPTION
Default Management IP Address
DHCP Client Select this option if you have a DHCP server that can assign the Switch an IP address,
subnet mask, a default gateway IP address and a domain name server IP address automatically.
Static IP Address Select this option if you don’t have a DHCP server or if you wish to assign static IP address
IP Address Enter the IP address of your Switch in dotted decimal notation for example 192.168.1.1.
IP Subnet Mask Enter the IP subnet mask of your Switch in dotted decimal notation for example
Default Gateway Enter the IP address of the default outgoing gateway in dotted decimal notation, for
VID Enter the VLAN identification number associated with the Switch IP address. This is the VLAN
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
Cancel Click Cancel to reset the fields to your previous configuration.
information to the Switch. You need to fill in the following fields when you select this option.
255.255.255.0.
example 192.168.1.254.
ID of the CPU and is used for management only. The default is "1". All ports, by default, are fixed members of this "management VLAN" in order to manage the device from any port. If a port is not a member of this VLAN, then users on that port cannot access the device. To access the Switch make sure the port that you are connected to is a member of Management VLAN.
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.
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Table 16 Basic Setting > IP Setup (continued)
LABEL DESCRIPTION
Management IP Addresses
You can create up to 64 IP addresses, which are used to access and manage the Switch from the ports belonging to the pre-defined VLAN(s). You must configure a VLAN first.
IP Address Enter the IP address for managing the Switch by the members of the VLAN specified in the
VID field below.
IP Subnet Mask Enter the IP subnet mask in dotted decimal notation.
VID Type the VLAN group identification number.
Default Gateway Enter the IP address of the default outgoing gateway in dotted decimal notation. Add Click Add to insert the entry to the summary table below and save your changes to the
Switch’s run-time memory. The Switch loses these changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to reset the fields to your previous configuration.
Index This field displays the index number of the rule. Click an index number to edit the rule.
IP Address This field displays the IP address.
IP Subnet Mask This field displays the subnet mask.
VID This field displays the ID number of the VLAN group.
Default Gateway This field displays the IP address of the default gateway. Delete Check the management IP addresses that you want to remove in the Delete column, then
click the Delete button.
Cancel Click Cancel to clear the selected check boxes in the Delete column.

8.7 Port Setup

Use this screen to configure Switch port settings. Click Basic Setting > Port Setup in the navigation panel to display the configuration screen.
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Figure 63 Basic Setting > Port Setup
The following table describes the labels in this screen.
Table 17 Basic Setting > Port Setup
LABEL DESCRIPTION
Port This is the port index number.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row first to set the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Active Select this check box to enable a port. The factory default for all ports is enabled. A port must be
enabled for data transmission to occur.
Name Enter a descriptive name that identifies this port. You can enter up to 64 alpha-numerical
characters.
Note: Due to space limitation, the port name may be truncated in some web
configurator screens.
Type This field displays the capacity that the port can support.
Speed/Duplex Select the speed and the duplex mode of the Ethernet connection on this port. The choices are:
• 10M/Half Duplex, 100M/Half Duplex, 10M/Full Duplex and 100M/Full Duplex for a 100Base-T
connection
• Auto-1000M and 1000M/Full Duplex for 1000Base-T and 1000Base-X connections. Selecting Auto-1000M (auto-negotiation) allows one port to negotiate with a peer port
automatically to obtain the connection speed (of up to 1000M) and duplex mode that both ends support. When auto-negotiation is turned on, a port on the Switch negotiates with the peer automatically to determine the connection speed and duplex mode. If the peer 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 Switch’s auto­negotiation is turned off, a 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 port are the same in order to connect.
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Table 17 Basic Setting > Port Setup (continued)
LABEL DESCRIPTION
Flow Control A concentration of traffic on a port decreases port bandwidth and overflows buffer memory
causing packet discards and frame losses. Flow Control is used to regulate transmission of signals to match the bandwidth of the receiving port.
The Switch uses IEEE802.3x flow control in full duplex mode and backpressure flow control in half duplex mode.
IEEE802.3x flow control is used in full duplex mode to send a pause signal to the sending port, causing it to temporarily stop sending signals when the receiving port memory buffers fill.
Back Pressure flow control is typically used in half duplex mode to send a "collision" signal to the sending port (mimicking a state of packet collision) causing the sending port to temporarily stop sending signals and resend later. Select Flow Control to enable it.
802.1p Priority This priority value is added to incoming frames without a (802.1p) priority queue tag. See Priority
Queue Assignment in Table 15 on page 82 for more information.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.

8.8 PoE Status

Note: The following screens are available for the PoE model(s) only. Some features are only
available for the Ethernet ports (1 to 8 for GS1920-8HPv2, 1 to 24 for GS1920-24HPv2, and 1 to 48 for GS1920-48HPv2).
Overview
The PoE model(s) supports the IEEE 802.3at High Power over Ethernet (PoE) standard.
A powered device (PD) is a device such as an access point or a switch, that supports PoE (Power over Ethernet) so that it can receive power from another device through an Ethernet port.
In the figure below, the IP camera and IP phone get their power directly from the Switch. Aside from minimizing the need for cables and wires, PoE removes the hassle of trying to find a nearby electric outlet to power up devices.
Figure 64 Powered Device Examples
You can also set priorities so that the Switch is able to reserve and allocate power to certain PDs.
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Note: The PoE (Power over Ethernet) devices that supply or receive power and their
connected Ethernet cables must all be completely indoors.
The PoE-Disabled Mechanism for GS1920-8HPv2
The GS1920-8HPv2 is a compact and fanless Switch capable of supplying Power over Ethernet (PoE). Certain action will be taken when the temperature of the GS1920-8HPv2 reaches the temperature thresholds. Please see the table below for how the mechanism works.
Table 18 Temperature and Action
TEMPERATURE ACTION
74°C/165.2.°F When the temperature of the GS1920-8HPv2 reaches this temperature threshold, the SYS
LED will become steady red. See Section 3.3 on page 40 for more information on the LEDs.
To cool down the GS1920-8HPv2, make sure there is enough clearance for ventilation. See
Chapter 2 on page 28 for more information. You can also relocate the GS1920-8HPv2 to a
cooler place.
79°C/174.2.°F If the temperature keeps climbing and reaches this temperature threshold, PoE will be
turned off automatically.
Below 74°C/165.2.°F PoE will be turned on again when the temperature drops and remains below this
temperature threshold for a 30-minute period.
Note: The GS1920-8HPv2 will generate logs messages for the situations listed in the System Log
screen. They will also be sent to the syslog server.
8.8.1 The PoE Status Screen
To view the current amount of power that PDs are receiving from the Switch, click Basic Setting > PoE Setup.
Figure 65 Basic Setting > PoE Setup
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The following table describes the labels in this screen.
Table 19 Basic Setting > PoE Setup
LABEL DESCRIPTION
PoE Mode This field displays the power management mode used by the Switch, whether it is in
Total Power (W) This field displays the total power the Switch can provide to the connected PoE-enabled
Consuming Power (W)
Allocated Power (W)
Remaining Power (W)
Classification or Consumption mode.
devices on the PoE ports.
This field displays the amount of power the Switch is currently supplying to the connected PoE­enabled devices.
This field displays the total amount of power the Switch has reserved for PoE after negotiating with the connected PoE device(s).
Consuming Power (W) can be less than or equal but not more than the Allocated Power (W).
This field displays the amount of power the Switch can still provide for PoE.
Note: The Switch must have at least 16 W of remaining power in order to supply
power to a PoE device, even if the PoE device needs less than 16W.
Port This is the port index number.
State This field shows which ports can receive power from the Switch. You can set this in Section 8.8.3
on page 90.
• Disable - The PD connected to this port cannot get power supply.
• Enable - The PD connected to this port can receive power.
Class This shows the power classification of the PD.
This is a number from 0 to 4, where each value represents a range of power (W) and power current (mA) that the PD requires to function. The ranges are as follows.
• Class 0 - Default, 0.44 to 12.94
• Class 1 - Optional, 0.44 to 3.84
• Class 2 - Optional, 3.84 to 6.49
• Class 3 - Optional, 6.49 to 12.95
• Class 4 - Reserved (PSEs classify as Class 0) in a Switch that supports IEEE 802.3af only.
Optional, 12.95 to 25.50 in a Switch that supports IEEE 802.3at.
PD Priority When the total power requested by the PDs exceeds the total PoE power budget on the Switch,
you can set the PD priority to allow the Switch to provide power to ports with higher priority first.
• Critical has the highest priority.
• High has the Switch assign power to the port after all critical priority ports are served.
• Low has the Switch assign power to the port after all critical and high priority ports are
served.
Power-Up This field displays the PoE standard the Switch uses to provide power on this port.
Consuming Power (mW)
Max Power (mW)
This field displays the current amount of power consumed by the PD from the Switch on this port.
This field displays the maximum amount of power the PD could use from the Switch on this port.
8.8.2 PoE Time Range Status
Use this screen to see whether PoE is scheduled to be enabled on a port.
Click the PoE Time Range Status link in the Basic Setting > PoE Setup screen. The following screen opens.
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Figure 66 Basic Setting > PoE Setup > PoE Time Range Status
The following table describes the labels in this screen.
Table 20 Basic Setting > PoE Setup > PoE Time Range Status
LABEL DESCRIPTION
Port This is the number of the port on the Switch.
Time Range This field displays the name of the schedule which is applied to the port. PoE is enabled at the
state This field displays whether the port can receive power from the Switch (In) or not (Out) currently.
specified time/date.
8.8.3 PoE Setup
Use this screen to set the priority levels, power-up mode and schedule for the Switch in distributing power to PDs.
Click the PoE Setup link in the Basic Setting > PoE Setup screen. The following screen opens.
It shows - if there is no schedule applied to the port.
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Figure 67 Basic Setting > PoE Setup > PoE Setup
The following table describes the labels in this screen.
Table 21 Basic Setting > PoE Setup
LABEL DESCRIPTION
PoE Mode Select the power management mode you want the Switch to use.
• Classification - Select this if you want the Switch to reserve the Max Power (mW) to each PD
according to the priority level. If the total power supply runs out, PDs with lower priority do not get power to function.
• Consumption - Select this if you want the Switch to manage the total power supply so that
each connected PD gets a resource. However, the power allocated by the Switch may be less than the Max Power (mW) of the PD. PDs with higher priority also get more power than those with lower priority levels.
Pre-Allocate Select this to have the Switch pre-allocate power to each port based on the classification of the
PD device.
Dual Detection Select this to have the Switch run another detecting procedure between the detection and
classification stages. This helps check if the power interface (PI) range of the connected PD is within the IEEE 802.3AF/AT standard range and ensures it is an IEEE PD.
Power Up Sequence Delay
Port This is the port index number.
* Settings in this row apply to all ports.
Select this to allow PoE ports to be powered up one-by-one randomly or clear to allow them all to be powered up at the same time.
Use this row only if you want to make some settings the same for all ports. Use this row first to set the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
PD Select this to provide power to a PD connected to the port.
If left unchecked, the PD connected to the port cannot receive power from the Switch.
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Table 21 Basic Setting > PoE Setup (continued)
LABEL DESCRIPTION
PD Priority When the total power requested by the PDs exceeds the total PoE power budget on the Switch,
you can set the PD priority to allow the Switch to provide power to ports with higher priority. Select Critical to give the highest PD priority on the port. Select High to set the Switch to assign the remaining power to the port after all critical priority
ports are served. Select Low to set the Switch to assign the remaining power to the port after all critical and high
priority ports are served.
Power-Up Set how the Switch provides power to a connected PD at power-up.
802.3af - the Switch follows the IEEE 802.3af Power over Ethernet standard to supply power to the connected PDs during power-up.
Legacy - the Switch can provide power to the connected PDs that require high inrush currents at power-up. Inrush current is the maximum, instantaneous input current drawn by the PD when first turned on.
Pre-802.3at - the Switch initially offers power on the port according to the IEEE 802.3af standard, and then switches to support the IEEE 802.3at standard within 75 milliseconds after a PD is connected to the port. Select this option if the Switch is performing 2-event Layer-1 classification (PoE+ hardware classification) or the connected PD is NOT performing Layer 2 power classification using Link Layer Discovery Protocol (LLDP).
802.3at - the Switch supports the IEEE 802.3at High Power over Ethernet standard and can supply power of up to 30W per Ethernet port. IEEE 802.3at is also known as PoE+ or PoE Plus. An IEEE
802.3at compatible device is referred to as Type 2. Power Class 4 (High Power) can only be used by Type 2 devices. If the connected PD requires a Class 4 current when it is turned on, it will be powered up in this mode.
Max Power (mW)
Wide Range Detection
Time Range Select a pre-defined schedule (created using the Advanced Application > Time Range screen)
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
Cancel Click Cancel to begin configuring this screen afresh.
Specify the maximum amount of power the PD could use from the Switch on this port.
Select this to let the Switch have a wider detection range for the PD.
The Switch detects whether a connected device is a powered device or not before supplying power to the port. For the PD detection, the Switch applies a fixed voltage to the device and then receives returned current. If the returned current is within the IEEE 802.3AF/AT standard range, the device will be considered as a valid PD by the Switch.
However, in real cases, environmental interferences might easily cause the returned current to be out of the standard range.
to control when the Switch enables PoE to provide power on the port.
If you leave this field blank, PoE is disabled on the port.
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.

8.9 Interface Setup

An IPv6 address is configured on a per-interface basis. The interface can be a physical interface (for example, an Ethernet port) or a virtual interface (for example, a VLAN). The Switch supports the VLAN interface type for IPv6 at the time of writing.
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Use this screen to set IPv6 interfaces on which you can configure an IPv6 address to access and manage the Switch. Click Basic Setting > Interface Setup in the navigation panel to display the configuration screen.
Figure 68 Basic Setting > Interface Setup
The following table describes the labels in this screen.
Table 22 Basic Setting > Interface Setup
LABEL DESCRIPTION
Interface Type Select the type of IPv6 interface for which you want to configure. The Switch supports the VLAN
Interface ID Specify a unique identification number (from 1 to 4094) for the interface.
interface type for IPv6 at the time of writing.
Add Click this to create a new entry.
Cancel Click Cancel to reset the fields to your previous configuration.
Index This field displays the index number of an entry.
Interface Type This field displays the type of interface.
Interface ID This field displays the identification number of the interface.
Interface This field displays the interface’s descriptive name which is generated automatically by the
Delete Click Delete to remove the selected entry from the summary table. Cancel Click Cancel to clear the check boxes.

8.10 IPv6

Use this screen to view the IPv6 interface status and configure Switch’s management IPv6 addresses.
To have IPv6 function properly, you should configure a static VLAN with the same ID number in the Advanced Application > VLAN screens.
This saves your changes to the Switch’s run-time memory. The Switch loses these changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the non-volatile memory when you are done configuring.
Switch. The name is from a combination of the interface type and ID number.
Select an entry’s check box to select a specific entry. Otherwise, select the check box in the table heading row to select all entries.
Click Basic Setting > IPv6 in the navigation panel to display the IPv6 status screen as shown next.
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Figure 69 Basic Setting > IPv6
The following table describes the labels in this screen.
Table 23 Basic Setting > IPv6
LABEL DESCRIPTION
Index This field displays the index number of an IPv6 interface. Click on an index number to view more
interface details.
Interface This is the name of the IPv6 interface you created.
Active This field displays whether the IPv6 interface is activated or not.
8.10.1 IPv6 Interface Status
Use this screen to view a specific IPv6 interface status and detailed information. Click an interface index number in the Basic Setting > IPv6 screen. The following screen opens.
Figure 70 Basic Setting > IPv6 > IPv6 Interface Status
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The following table describes the labels in this screen.
Table 24 Basic Setting > IPv6 > IPv6 Interface Status
LABEL DESCRIPTION
IPv6 Active This field displays whether the IPv6 interface is activated or not.
MTU Size This field displays the Maximum Transmission Unit (MTU) size for IPv6 packets on this interface.
ICMPv6 Rate Limit Bucket Size
ICMPv6 Rate Limit Error Interval
Stateless Address Autoconfig
Link Local Address
Global Unicast Address(es)
Joined Group Address(es)
ND DAD Active This field displays whether Neighbor Discovery (ND) Duplicate Address Detection (DAD) is
Number of DAD Attempts
NS-Interval (millisecond)
ND Reachable Time (millisecond)
DHCPv6 Client Active
Identity Association
IA Type The IA type is the type of address in the IA. Each IA holds one type of address. IA_NA means an
IAID Each IA consists of a unique IAID and associated IP information.
T1 This field displays the DHCPv6 T1 timer. After T1, the Switch sends the DHCPv6 server a Renew
T2 This field displays the DHCPv6 T2 timer. If the time T2 is reached and the server does not respond,
This field displays the maximum number of ICMPv6 error messages which are allowed to transmit in a given time interval. If the bucket is full, subsequent error messages are suppressed.
This field displays the time period (in milliseconds) during which ICMPv6 error messages of up to the bucket size can be transmitted. 0 means no limit.
This field displays whether the Switch’s interface can automatically generate a link-local address via stateless autoconfiguration.
This field displays the Switch’s link-local IP address and prefix generated by the interface. It also shows whether the IP address is preferred, which means it is a valid address and can be used as a sender or receiver address.
This field displays the Switch’s global unicast address to identify this interface.
This field displays the IPv6 multicast addresses of groups the Switch’s interface joins.
enabled on the interface.
This field displays the number of consecutive neighbor solicitations the Switch sends for this interface.
This field displays the time interval (in milliseconds) at which neighbor solicitations are re-sent for this interface.
This field displays how long (in milliseconds) a neighbor is considered reachable for this interface.
This field displays whether the Switch acts as a DHCPv6 client to get an IPv6 address from a DHCPv6 server.
An Identity Association (IA) is a collection of addresses assigned to a DHCP client, through which the server and client can manage a set of related IP addresses. Each IA must be associated with exactly one interface.
identity association for non-temporary addresses and IA_TA is an identity association for temporary addresses.
message.
An IA_NA option contains the T1 and T2 fields, but an IA_TA option does not. The DHCPv6 server uses T1 and T2 to control the time at which the client contacts with the server to extend the lifetimes on any addresses in the IA_NA before the lifetimes expire.
the Switch sends a Rebind message to any available server.
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Table 24 Basic Setting > IPv6 > IPv6 Interface Status (continued)
LABEL DESCRIPTION
State This field displays the state of the TA. It shows
Active when the Switch obtains addresses from a DHCpv6 server and the TA is created. Renew when the TA’s address lifetime expires and the Switch sends out a Renew message. Rebind when the Switch doesn’t receive a response from the original DHCPv6 server and sends
out a Rebind message to another DHCPv6 server.
SID This field displays the DHCPv6 server’s unique ID.
Address This field displays the Switch’s global address which is assigned by the DHCPv6 server.
Preferred Lifetime
Valid Lifetime
DNS This field displays the DNS server address assigned by the DHCPv6 server.
Domain List This field displays the address record when the Switch queries the DNS server to resolve domain
Restart DHCPv6 Client
This field displays how long (in seconds) that the global address remains preferred.
This field displays how long (in seconds) that the global address is valid.
names. Click Click Here to send a new DHCP request to the DHCPv6 server and update the IPv6 address
and DNS information for this interface.
8.10.2 IPv6 Configuration
Use this screen to configure IPv6 settings on the Switch. Click the IPv6 Configuration link in the Basic Setting > IPv6 screen. The following screen opens.
Figure 71 Basic Setting > IPv6 > IPv6 Configuration
The following table describes the labels in this screen.
Table 25 Basic Setting > IPv6 > IPv6 Configuration
LABEL DESCRIPTION
IPv6 Global Setup
IPv6 Interface Setup
IPv6 Addressing
IPv6 Link­Local Address Setup
Click the link to go to a screen where you can configure the global IPv6 settings on the Switch.
Click the link to go to a screen where you can enable an IPv6 interface on the Switch.
Click the link to go to a screen where you can configure the IPv6 link-local address for an interface.
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Table 25 Basic Setting > IPv6 > IPv6 Configuration (continued)
LABEL DESCRIPTION
IPv6 Global Address Setup
IPv6 Neighbor Discovery
IPv6 Neighbor Discovery Setup
IPv6 Neighbor Setup
DHCPv6 Client Setup
Click the link to go to a screen where you can configure the IPv6 global address for an interface.
Click the link to go to a screen where you can configure the IPv6 neighbor discovery settings.
Click the link to go to a screen where you can create a static IPv6 neighbor entry in the Switch’s IPv6 neighbor table.
Click the link to go to a screen where you can configure the Switch DHCP settings.
8.10.3 IPv6 Global Setup
Use this screen to configure the global IPv6 settings. Click the link next to IPv6 Global Setup in the IPv6 Configuration screen to display the screen as shown next.
Chapter 8 Basic Setting
Figure 72 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Global Setup
The following table describes the labels in this screen.
Table 26 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Global Setup
LABEL DESCRIPTION
IPv6 Hop Limit Specify the maximum number of hops (from 1 to 255) in router advertisements. This is the
maximum number of hops on which an IPv6 packet is allowed to transmit before it is discarded by an IPv6 router, which is similar to the TTL field in IPv4.
ICMPv6 Rate Limit Bucket Size
ICMPv6 Rate Limit Error Interval
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
Cancel Click Cancel to begin configuring this screen afresh. Clear Click Clear to reset the fields to the factory defaults.
Specify the maximum number of ICMPv6 error messages (from 1 to 200) which are allowed to transmit in a given time interval. If the bucket is full, subsequent error messages are suppressed.
Specify the time period (from 0 to 2147483647 milliseconds) during which ICMPv6 error messages of up to the bucket size can be transmitted. 0 means no limit.
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the nonvolatile memory when you are done configuring.
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8.10.4 IPv6 Interface Setup
Use this screen to turn on or off an IPv6 interface and enable stateless autoconfiguration on it. Click the link next to IPv6 Interface Setup in the IPv6 Configuration screen to display the screen as shown next.
Figure 73 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Interface Setup
The following table describes the labels in this screen.
Table 27 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Interface Setup
LABEL DESCRIPTION
Interface Select the IPv6 interface you want to configure.
Active Select this option to enable the interface.
Address Autoconfig
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
Cancel Click Cancel to begin configuring this screen afresh. Clear Click Clear to reset the fields to the factory defaults.
Index This is the interface index number. Click on an index number to change the settings.
Interface This is the name of the IPv6 interface you created.
Active This field displays whether the IPv6 interface is activated or not.
Address Autoconfig
Select this option to allow the interface to automatically generate a link-local address via stateless autoconfiguration.
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the nonvolatile memory when you are done configuring.
This field displays whether stateless autoconfiguration is enabled on the interface.
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8.10.5 IPv6 Link-Local Address Setup
A link-local address uniquely identifies a device on the local network (the LAN). It is similar to a “private IP address” in IPv4. You can have the same link-local address on multiple interfaces on a device. A link­local unicast address has a predefined prefix of fe80::/10.
Use this screen to configure the interface’s link-local address and default gateway. Click the link next to IPv6 Link-Local Address Setup in the IPv6 Configuration screen to display the screen as shown next.
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Figure 74 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Link-Local Address Setup
The following table describes the labels in this screen.
Table 28 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Link-Local Address Setup
LABEL DESCRIPTION
Interface Select the IPv6 interface you want to configure.
Link-Local Address
Default Gateway
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
Cancel Click Cancel to begin configuring this screen afresh. Clear Click Clear to reset the fields to the factory defaults.
Index This is the interface index number. Click on an index number to change the settings.
Interface This is the name of the IPv6 interface you created.
IPv6 Link-Local Address
IPv6 Default Gateway
Manually configure a static IPv6 link-local address for the interface.
Set the default gateway IPv6 address for the interface. When an interface cannot find a routing information for a frame’s destination, it forwards the packet to the default gateway.
changes if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the nonvolatile memory when you are done configuring.
This is the static IPv6 link-local address for the interface.
This is the default gateway IPv6 address for the interface.
8.10.6 IPv6 Global Address Setup
Use this screen to configure the interface’s IPv6 global address. Click the link next to IPv6 Global Address Setup in the IPv6 Configuration screen to display the screen as shown next.
Figure 75 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Global Address Setup
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The following table describes the labels in this screen.
Table 29 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Global Address Setup
LABEL DESCRIPTION
Interface Select the IPv6 interface you want to configure.
IPv6 Global Address
Prefix Length Specify an IPv6 prefix length that specifies how many most significant bits (start from the left) in
EUI-64 Select this option to have the interface ID be generated automatically using the EUI-64 format. Add Click Add to save your changes to the Switch’s run-time memory. The Switch loses these changes
Cancel Click Cancel to begin configuring this screen afresh. Clear Click Clear to reset the fields to the factory defaults.
Index This is the interface index number. Click on an index number to change the settings.
Interface This is the name of the IPv6 interface you created.
IPv6 Global Address/Prefix Length
EUI-64 This shows whether the interface ID of the global address is generated using the EUI-64 format.
Delete Check the entry(ies) that you want to remove and then click Delete to remove the selected
Cancel Click Cancel to clear the check boxes.
Manually configure a static IPv6 global address for the interface.
the address compose the network address.
if it is turned off or loses power, so use the Save link on the top navigation panel to save your changes to the nonvolatile memory when you are done configuring.
This field displays the IPv6 global address and prefix length for the interface.
Select an entry’s check box to select a specific entry. Otherwise, select the check box in the table heading row to select all entries.
entry(ies) from the summary table.
8.10.7 IPv6 Neighbor Discovery Setup
Use this screen to configure neighbor discovery settings for each interface. Click the link next to IPv6 Neighbor Discovery Setup in the IPv6 Configuration screen to display the screen as shown next.
Figure 76 Basic Setting > IPv6 > IPv6 Configuration > IPv6 Neighbor Discovery Setup
GS1920v2 Series User’s Guide
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