ZyXEL Communications GS1915 Series User manual

Default Login Details
User’s Guide
GS1915 Series
8/24-port Gigabit Smart Managed Layer-2 Switch
Copyright © 2022 Zyxel and/or its affiliates. All Rights Reserved.
Management IP
Address
http://setup.zyxel
or
http://DHCP-assigned IP
or
http://192.168.1.1
User Name admin
Password 1234
Version 4.70 Edition 4, 05/2022

GS1915 Series User’s Guide
2
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
•QuickStartGuide
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 Control Center (NCC) User’s Guide
Go to the Nebula Control Center to get this User’s Guide on how to configure the Switch using
Nebula.
•MoreInformation
Go to https://businessforum.zyxel.com for product discussions.
Go to support.zyxel.com to find other information on the Switch.

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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 >
IP Setup > IP Configuration > Network Proxy Configuration means you first click Basic Setting in the
navigation panel, then the IP Setup sub menu, then IP Configuration and finally Network Proxy
Configuration 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

Contents Overview
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Contents Overview
User’s Guide ......................................................................................................................................17
Getting to Know Your Switch .............................................................................................................. 18
Hardware Installation and Connection ............................................................................................. 27
Hardware Panels .................................................................................................................................. 33
Technical Reference ........................................................................................................................39
Web Configurator ................................................................................................................................. 40
Initial Setup Example ............................................................................................................................ 65
Tutorials .................................................................................................................................................. 70
Status ...................................................................................................................................................... 78
Basic Setting .......................................................................................................................................... 85
VLAN .................................................................................................................................................... 118
Static MAC Forwarding ...................................................................................................................... 133
Static Multicast Forwarding ............................................................................................................... 135
Filtering ................................................................................................................................................. 138
Spanning Tree Protocol ...................................................................................................................... 140
Bandwidth Control ............................................................................................................................. 146
Broadcast Storm Control ................................................................................................................... 148
Mirroring ............................................................................................................................................... 150
Link Aggregation ................................................................................................................................ 152
Port Security ......................................................................................................................................... 159
Time Range ......................................................................................................................................... 162
Queuing Method ................................................................................................................................ 164
Multicast .............................................................................................................................................. 167
AAA ...................................................................................................................................................... 173
DHCP Snooping .................................................................................................................................. 181
Loop Guard ......................................................................................................................................... 192
Error-Disable ........................................................................................................................................ 195
Green Ethernet ................................................................................................................................... 202
Link Layer Discovery Protocol (LLDP) ................................................................................................ 204
Differentiated Services ....................................................................................................................... 226
DHCP .................................................................................................................................................... 230
ARP Setup ............................................................................................................................................ 242
Maintenance ...................................................................................................................................... 246
Access Control .................................................................................................................................... 259
Diagnostic ........................................................................................................................................... 281
System Log .......................................................................................................................................... 284
Syslog Setup ........................................................................................................................................ 285

Contents Overview
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Cluster Management ......................................................................................................................... 288
MAC Table ........................................................................................................................................... 294
ARP Table ............................................................................................................................................ 297
Path MTU Table ................................................................................................................................... 299
Configure Clone ................................................................................................................................. 300
IPv6 Neighbor Table ........................................................................................................................... 302
Port Status ............................................................................................................................................ 304
Troubleshooting and Appendices .................................................................................................309
Troubleshooting .................................................................................................................................. 310

Table of Contents
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Table of Contents
Document Conventions ......................................................................................................................3
Contents Overview..............................................................................................................................4
Table of Contents.................................................................................................................................6
Part I: User’s Guide..........................................................................................17
Chapter 1
Getting to Know Your Switch ............................................................................................................18
1.1 Introduction ..................................................................................................................................... 18
1.1.1 Management Modes ........................................................................................................... 19
1.1.2 Mode Changing ................................................................................................................... 20
1.1.3 ZON Utility ............................................................................................................................... 21
1.1.4 PoE .......................................................................................................................................... 22
1.2 Example Applications .................................................................................................................... 22
1.2.1 PoE Example Application ..................................................................................................... 23
1.2.2 Backbone Example Application ......................................................................................... 23
1.2.3 Bridging Example .................................................................................................................. 24
1.2.4 High Performance Switching Example ............................................................................... 24
1.2.5 IEEE 802.1Q VLAN Application Examples ........................................................................... 25
1.3 Ways to Manage the Switch ......................................................................................................... 26
1.4 Good Habits for Managing the Switch ........................................................................................26
Chapter 2
Hardware Installation and Connection ...........................................................................................27
2.1 Installation Scenarios ...................................................................................................................... 27
2.2 Safety Precautions .......................................................................................................................... 27
2.3 Desktop Installation Procedure ..................................................................................................... 27
2.4 Wall Mounting ................................................................................................................................. 28
2.4.1 Installation Requirements ..................................................................................................... 28
2.5 Mounting the Switch on a Rack ................................................................................................... 30
2.5.1 Installation Requirements ..................................................................................................... 30
2.5.2 Precautions ............................................................................................................................ 31
2.5.3 Attaching the Mounting Brackets to the Switch ............................................................... 31
2.5.4 Mounting the Switch on a Rack .......................................................................................... 31
Chapter 3
Hardware Panels................................................................................................................................33

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3.1 Front Panel Connections ............................................................................................................... 33
3.1.1 Gigabit Ethernet Ports ........................................................................................................... 34
3.1.2 PoE (GS1915-8EP / GS1915-24EP) ........................................................................................ 34
3.2 Rear Panel ....................................................................................................................................... 35
3.2.1 Grounding .............................................................................................................................. 35
3.2.2 Power Connection ................................................................................................................ 37
3.3 LEDs .................................................................................................................................................. 37
Part II: Technical Reference...........................................................................39
Chapter 4
Web Configurator...............................................................................................................................40
4.1 Overview ......................................................................................................................................... 40
4.2 System Login .................................................................................................................................... 40
4.3 Zyxel One Network (ZON) Utility .................................................................................................... 44
4.3.1 Requirements ......................................................................................................................... 44
4.3.2 Run the ZON Utility ................................................................................................................. 45
4.4 Wizard .............................................................................................................................................. 48
4.4.1 Basic ....................................................................................................................................... 49
4.4.2 Protection .............................................................................................................................. 53
4.4.3 VLAN ....................................................................................................................................... 56
4.4.4 QoS ......................................................................................................................................... 57
4.5 Web Configurator Layout .............................................................................................................. 58
4.5.1 Change Your Password ........................................................................................................ 62
4.6 Save Your Configuration ................................................................................................................ 63
4.7 Switch Lockout ................................................................................................................................ 63
4.8 Reset the Switch ............................................................................................................................. 63
4.8.1 Restore/Reset Button ............................................................................................................ 63
4.9 Log Out of the Web Configurator ................................................................................................ 64
4.10 Help ................................................................................................................................................ 64
Chapter 5
Initial Setup Example.........................................................................................................................65
5.1 Overview ......................................................................................................................................... 65
5.1.1 Create a VLAN ...................................................................................................................... 65
5.1.2 Set Port VID ............................................................................................................................ 66
5.1.3 Configure Switch Management IP Address ....................................................................... 67
Chapter 6
Tutorials...............................................................................................................................................70
6.1 Overview ......................................................................................................................................... 70

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6.2 How to Use DHCPv4 Snooping on the Switch ............................................................................. 70
6.3 How to Use DHCPv4 Relay on the Switch .................................................................................... 73
6.3.1 DHCP Relay Tutorial Introduction ........................................................................................ 73
6.3.2 Create a VLAN ...................................................................................................................... 74
6.3.3 Configure DHCPv4 Relay ..................................................................................................... 76
6.3.4 Troubleshooting ..................................................................................................................... 76
Chapter 7
Status...................................................................................................................................................78
7.1 Overview ......................................................................................................................................... 78
7.1.1 What You Can Do ................................................................................................................. 78
7.2 Status ................................................................................................................................................ 78
7.2.1 Neighbor Screen ................................................................................................................... 81
7.2.2 Neighbor Detail ..................................................................................................................... 82
Chapter 8
Basic Setting.......................................................................................................................................85
8.1 Overview ......................................................................................................................................... 85
8.1.1 What You Can Do ................................................................................................................. 85
8.2 System Information ......................................................................................................................... 85
8.3 General Setup ................................................................................................................................. 86
8.4 Switch Setup .................................................................................................................................... 88
8.4.1 Introduction to VLANs ........................................................................................................... 88
8.4.2 Setting up ............................................................................................................................... 89
8.5 IP Setup ............................................................................................................................................ 90
8.5.1 IP Interfaces ........................................................................................................................... 90
8.5.2 IP Status .................................................................................................................................. 91
8.5.3 IP Status Details ...................................................................................................................... 91
8.5.4 IP Configuration .................................................................................................................... 93
8.5.5 Network Proxy Configuration ............................................................................................... 95
8.6 Port Setup ........................................................................................................................................ 96
8.7 PoE Status ........................................................................................................................................ 97
8.7.1 PoE Time Range Setup ......................................................................................................... 99
8.7.2 PoE Setup ............................................................................................................................. 100
8.8 Interface Setup ............................................................................................................................. 103
8.9 IPv6 ................................................................................................................................................. 104
8.9.1 IPv6 Status ............................................................................................................................ 104
8.9.2 IPv6 Interface Status ........................................................................................................... 105
8.9.3 IPv6 Configuration .............................................................................................................. 107
8.9.4 IPv6 Global Setup ................................................................................................................ 108
8.9.5 IPv6 Interface Setup ............................................................................................................ 109
8.9.6 IPv6 Link-Local Address Setup ............................................................................................110
8.9.7 IPv6 Global Address Setup ................................................................................................. 111

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8.9.8 IPv6 Neighbor Discovery Setup ......................................................................................... 112
8.9.9 IPv6 Neighbor Setup ........................................................................................................... 113
8.9.10 DHCPv6 Client Setup ........................................................................................................ 114
8.10 Cloud Management .................................................................................................................. 115
8.10.1 Nebula Center Control Discovery ................................................................................... 117
Chapter 9
VLAN..................................................................................................................................................118
9.1 Overview ....................................................................................................................................... 118
9.1.1 What You Can Do ............................................................................................................... 118
9.1.2 What You Need to Know ................................................................................................... 118
9.2 Introduction to IEEE 802.1Q Tagged VLANs ............................................................................... 118
9.3 VLAN Status ................................................................................................................................... 120
9.3.1 VLAN Details ........................................................................................................................ 121
9.4 VLAN Configuration ..................................................................................................................... 122
9.5 Configure a Static VLAN .............................................................................................................. 123
9.6 Configure VLAN Port Settings ...................................................................................................... 124
9.7 Voice VLAN ................................................................................................................................... 125
9.8 MAC Based VLAN ......................................................................................................................... 127
9.9 Vendor ID Based VLAN ................................................................................................................ 128
9.10 Port-Based VLAN Setup .............................................................................................................. 130
9.10.1 Configure a Port-Based VLAN ......................................................................................... 130
Chapter 10
Static MAC Forwarding....................................................................................................................133
10.1 Overview ..................................................................................................................................... 133
10.1.1 What You Can Do ............................................................................................................. 133
10.2 Configure Static MAC Forwarding ...........................................................................................133
Chapter 11
Static Multicast Forwarding.............................................................................................................135
11.1 Static Multicast Forwarding Overview ..................................................................................... 135
11.1.1 What You Can Do ............................................................................................................. 135
11.1.2 What You Need To Know ................................................................................................. 135
11.2 Static Multicast Forwarding Configuration .............................................................................. 136
Chapter 12
Filtering..............................................................................................................................................138
12.1 Filtering Overview ....................................................................................................................... 138
12.1.1 What You Can Do ............................................................................................................. 138
12.2 Configure a Filtering Rule .......................................................................................................... 138
Chapter 13
Spanning Tree Protocol ...................................................................................................................140

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13.1 Spanning Tree Protocol Overview ............................................................................................ 140
13.1.1 What You Can Do ............................................................................................................. 140
13.1.2 What You Need to Know ................................................................................................. 140
13.2 Rapid Spanning Tree Protocol Status .......................................................................................142
13.3 Configure Rapid Spanning Tree Protocol ................................................................................ 143
Chapter 14
Bandwidth Control...........................................................................................................................146
14.1 Bandwidth Control Overview .................................................................................................... 146
14.1.1 What You Can Do ............................................................................................................. 146
14.2 Bandwidth Control Setup .......................................................................................................... 146
Chapter 15
Broadcast Storm Control.................................................................................................................148
15.1 Broadcast Storm Control Overview ..........................................................................................148
15.1.1 What You Can Do ............................................................................................................. 148
15.2 Broadcast Storm Control Setup ................................................................................................ 148
Chapter 16
Mirroring............................................................................................................................................150
16.1 Mirroring Overview ..................................................................................................................... 150
16.2 Port Mirroring Setup .................................................................................................................... 150
Chapter 17
Link Aggregation .............................................................................................................................152
17.1 Link Aggregation Overview ....................................................................................................... 152
17.1.1 What You Can Do ............................................................................................................. 152
17.1.2 What You Need to Know ................................................................................................. 152
17.2 Link Aggregation Status ............................................................................................................. 153
17.3 Link Aggregation Setting ........................................................................................................... 154
17.3.1 Link Aggregation Control Protocol ................................................................................. 156
17.4 Technical Reference .................................................................................................................. 157
17.4.1 Static Trunking Example ................................................................................................... 157
Chapter 18
Port Security......................................................................................................................................159
18.1 Port Security Overview ............................................................................................................... 159
18.2 About Port Security ..................................................................................................................... 159
18.3 Port Security Setup ...................................................................................................................... 159
Chapter 19
Time Range.......................................................................................................................................162
19.1 Time Range Overview ................................................................................................................ 162

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19.1.1 What You Can Do ............................................................................................................. 162
19.2 Configuring Time Range ............................................................................................................ 162
Chapter 20
Queuing Method..............................................................................................................................164
20.1 Queuing Method Overview ...................................................................................................... 164
20.1.1 What You Can Do ............................................................................................................. 164
20.1.2 What You Need to Know ................................................................................................. 164
20.2 Configuring Queuing ................................................................................................................. 165
Chapter 21
Multicast............................................................................................................................................167
21.1 Multicast Overview ..................................................................................................................... 167
21.1.1 What You Can Do ............................................................................................................. 167
21.1.2 What You Need to Know ................................................................................................. 167
21.2 Multicast Setup ........................................................................................................................... 168
21.3 IPv4 Multicast Status ................................................................................................................... 168
21.3.1 IGMP Snooping .................................................................................................................. 169
21.3.2 IGMP Snooping VLAN ....................................................................................................... 171
Chapter 22
AAA...................................................................................................................................................173
22.1 Authentication, Authorization and Accounting (AAA) ......................................................... 173
22.1.1 What You Can Do ............................................................................................................. 173
22.1.2 What You Need to Know ................................................................................................. 173
22.2 AAA Screens ............................................................................................................................... 174
22.3 RADIUS Server Setup ................................................................................................................... 174
22.4 AAA Setup ................................................................................................................................... 176
22.5 Technical Reference .................................................................................................................. 178
22.5.1 Vendor Specific Attribute ................................................................................................ 178
22.5.2 Supported RADIUS Attributes ........................................................................................... 179
22.5.3 Attributes Used for Authentication .................................................................................. 180
Chapter 23
DHCP Snooping................................................................................................................................181
23.1 DHCP Snooping Overview ......................................................................................................... 181
23.1.1 What You Can Do ............................................................................................................. 181
23.2 DHCP Snooping .......................................................................................................................... 181
23.3 DHCP Snooping Configure ........................................................................................................ 184
23.3.1 DHCP Snooping Port Configure ...................................................................................... 186
23.3.2 DHCP Snooping VLAN Configure .................................................................................... 187
23.3.3 DHCP Snooping VLAN Port Configure ............................................................................ 188
23.4 Technical Reference .................................................................................................................. 189

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23.4.1 DHCP Snooping Overview ............................................................................................... 189
Chapter 24
Loop Guard ......................................................................................................................................192
24.1 Loop Guard Overview ............................................................................................................... 192
24.1.1 What You Can Do ............................................................................................................. 192
24.1.2 What You Need to Know ................................................................................................. 192
24.2 Loop Guard Setup ...................................................................................................................... 194
Chapter 25
Error-Disable.....................................................................................................................................195
25.1 Error-Disable Overview ............................................................................................................... 195
25.1.1 CPU Protection Overview ................................................................................................ 195
25.1.2 Error-Disable Recovery Overview .................................................................................... 195
25.1.3 What You Can Do ............................................................................................................. 195
25.2 Error-Disable Settings .................................................................................................................. 196
25.3 Error-Disable Status ..................................................................................................................... 196
25.4 CPU Protection Configuration ................................................................................................... 198
25.5 Error-Disable Detect Configuration .......................................................................................... 199
25.6 Error-Disable Recovery Configuration ......................................................................................200
Chapter 26
Green Ethernet.................................................................................................................................202
26.1 Green Ethernet Overview .......................................................................................................... 202
26.2 Configuring Green Ethernet ...................................................................................................... 202
Chapter 27
Link Layer Discovery Protocol (LLDP) .............................................................................................204
27.1 LLDP Overview ............................................................................................................................ 204
27.2 LLDP-MED Overview ................................................................................................................... 205
27.3 LLDP Settings ............................................................................................................................... 206
27.4 LLDP Local Status ........................................................................................................................ 207
27.4.1 LLDP Local Port Status Detail ...........................................................................................208
27.5 LLDP Remote Status .................................................................................................................... 211
27.5.1 LLDP Remote Port Status Detail ....................................................................................... 212
27.6 LLDP Configuration ..................................................................................................................... 218
27.6.1 LLDP Configuration Basic TLV Setting .............................................................................. 219
27.6.2 LLDP Configuration Org-specific TLV Setting ................................................................. 220
27.7 LLDP-MED Configuration ............................................................................................................ 221
27.8 LLDP-MED Network Policy .......................................................................................................... 221
27.9 LLDP-MED Location .................................................................................................................... 223
Chapter 28
Differentiated Services ....................................................................................................................226

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28.1 DiffServ Overview ....................................................................................................................... 226
28.1.1 What You Need to Know ................................................................................................. 226
28.2 Activating DiffServ ...................................................................................................................... 227
28.3 DSCP-to-IEEE 802.1p Priority Settings ......................................................................................... 228
28.3.1 Configuring DSCP Settings ...............................................................................................229
Chapter 29
DHCP .................................................................................................................................................230
29.1 DHCP Overview .......................................................................................................................... 230
29.1.1 What You Can Do ............................................................................................................. 230
29.1.2 What You Need to Know ................................................................................................. 230
29.2 DHCP Configuration ................................................................................................................... 231
29.3 DHCPv4 Status ............................................................................................................................ 231
29.4 DHCPv4 Relay ............................................................................................................................. 231
29.4.1 DHCPv4 Relay Agent Information ................................................................................... 232
29.4.2 DHCPv4 Option 82 Profile ................................................................................................. 233
29.4.3 Configuring DHCPv4 Global Relay ................................................................................. 234
29.4.4 Configure DHCPv4 Global Relay Port ............................................................................ 235
29.4.5 Global DHCP Relay Configuration Example .................................................................. 236
29.4.6 DHCPv4 VLAN Setting ....................................................................................................... 237
29.4.7 Configure DHCPv4 VLAN Port ......................................................................................... 238
29.4.8 Example: DHCP Relay for Two VLANs ............................................................................. 239
29.5 DHCPv6 Relay ............................................................................................................................. 240
Chapter 30
ARP Setup..........................................................................................................................................242
30.1 ARP Overview ............................................................................................................................. 242
30.1.1 What You Can Do ............................................................................................................. 242
30.1.2 What You Need to Know ................................................................................................. 242
30.2 ARP Setup .................................................................................................................................... 244
30.2.1 ARP Learning ..................................................................................................................... 244
Chapter 31
Maintenance....................................................................................................................................246
31.1 Overview ..................................................................................................................................... 246
31.1.1 What You Can Do ............................................................................................................. 246
31.2 Maintenance Settings ................................................................................................................ 246
31.2.1 Erase Running-Configuration ........................................................................................... 248
31.2.2 Save Configuration ........................................................................................................... 248
31.2.3 Reboot System .................................................................................................................. 248
31.2.4 Factory Default .................................................................................................................. 249
31.2.5 Custom Default ................................................................................................................. 249
31.3 Firmware Upgrade ...................................................................................................................... 250

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31.4 Restore Configuration ................................................................................................................ 251
31.5 Backup Configuration ................................................................................................................ 252
31.6 Tech-Support ............................................................................................................................... 252
31.6.1 Tech-Support Download .................................................................................................. 254
31.7 Certificates .................................................................................................................................. 254
31.7.1 HTTPS Certificates .............................................................................................................. 255
31.8 Technical Reference .................................................................................................................. 256
31.8.1 FTP Command Line ........................................................................................................... 256
31.8.2 Filename Conventions ...................................................................................................... 256
31.8.3 FTP Command Line Procedure ........................................................................................ 257
31.8.4 GUI-based FTP Clients ....................................................................................................... 258
31.8.5 FTP Restrictions ................................................................................................................... 258
Chapter 32
Access Control.................................................................................................................................259
32.1 Access Control Overview .......................................................................................................... 259
32.1.1 What You Can Do ............................................................................................................. 259
32.2 Access Control Main Settings .................................................................................................... 259
32.3 Configure SNMP .......................................................................................................................... 260
32.3.1 Configure SNMP Trap Group ........................................................................................... 261
32.3.2 Enable or Disable Sending of SNMP Traps on a Port ..................................................... 262
32.3.3 Configure SNMP User ........................................................................................................ 263
32.4 Set Up Login Accounts ............................................................................................................... 265
32.5 Service Access Control .............................................................................................................. 266
32.6 Remote Management ............................................................................................................... 267
32.7 Account Security ........................................................................................................................ 268
32.8 Technical Reference .................................................................................................................. 270
32.8.1 About SNMP ....................................................................................................................... 270
32.8.2 SSH Overview ..................................................................................................................... 273
32.8.3 Introduction to HTTPS ........................................................................................................ 275
32.8.4 Google Chrome Warning Messages .............................................................................. 279
Chapter 33
Diagnostic.........................................................................................................................................281
33.1 Overview ..................................................................................................................................... 281
33.2 Diagnostic ................................................................................................................................... 281
Chapter 34
System Log........................................................................................................................................284
34.1 Overview ..................................................................................................................................... 284
34.2 System Log .................................................................................................................................. 284
Chapter 35
Syslog Setup .....................................................................................................................................285

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35.1 Syslog Overview .......................................................................................................................... 285
35.1.1 What You Can Do ............................................................................................................. 285
35.2 Syslog Setup ................................................................................................................................ 285
Chapter 36
Cluster Management.......................................................................................................................288
36.1 Cluster Management Overview ...............................................................................................288
36.1.1 What You Can Do ............................................................................................................. 288
36.2 Cluster Management Status ..................................................................................................... 289
36.3 Clustering Management Configuration .................................................................................. 290
36.4 Technical Reference .................................................................................................................. 291
36.4.1 Cluster Member Switch Management ........................................................................... 291
Chapter 37
MAC Table........................................................................................................................................294
37.1 MAC Table Overview ................................................................................................................. 294
37.1.1 What You Can Do ............................................................................................................. 294
37.1.2 What You Need to Know ................................................................................................. 294
37.2 Viewing the MAC Table ............................................................................................................. 295
Chapter 38
ARP Table..........................................................................................................................................297
38.1 Overview ..................................................................................................................................... 297
38.1.1 What You Can Do ............................................................................................................. 297
38.1.2 What You Need to Know ................................................................................................. 297
38.2 Viewing the ARP Table ............................................................................................................... 297
Chapter 39
Path MTU Table.................................................................................................................................299
39.1 Path MTU Overview .................................................................................................................... 299
39.2 Viewing the Path MTU Table ..................................................................................................... 299
Chapter 40
Configure Clone...............................................................................................................................300
40.1 Overview ..................................................................................................................................... 300
40.2 Configure Clone ......................................................................................................................... 300
Chapter 41
IPv6 Neighbor Table.........................................................................................................................302
41.1 IPv6 Neighbor Table Overview .................................................................................................. 302
41.2 Viewing the IPv6 Neighbor Table ............................................................................................. 302
Chapter 42
Port Status .........................................................................................................................................304

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42.1 Overview ..................................................................................................................................... 304
42.2 Port Status .................................................................................................................................... 304
42.2.1 Port Details ......................................................................................................................... 305
42.2.2 Port Utilization .................................................................................................................... 308
Part III: Troubleshooting and Appendices..................................................309
Chapter 43
Troubleshooting................................................................................................................................310
43.1 Power, Hardware Connections, and LEDs ............................................................................... 310
43.2 Switch Access and Login ........................................................................................................... 311
43.3 Switch Configuration .................................................................................................................. 313
Appendix A Customer Support ..................................................................................................... 314
Appendix B Common Services...................................................................................................... 319
Appendix C IPv6.............................................................................................................................. 322
Appendix D Legal Information ...................................................................................................... 331
Index.................................................................................................................................................336

17
PART I
User’s Guide

GS1915 Series User’s Guide
18
CHAPTER 1
Getting to Know Your Switch
1.1 Introduction
This chapter introduces the main features and applications of the Switch.
The GS1915 Series consists of the following models:
• GS1915-8
• GS1915-8EP
• GS1915-24E
• GS1915-24EP
References to PoE models in this User's Guide only apply to GS1915-8EP and GS1915-24EP.
All models are referred to as the “Switch” in this guide.
The Switch supports NebulaFlex for hybrid mode which can set the Switch to operate in either Nebula
cloud or standalone management mode. When the Switch is in Nebula cloud management mode, it
can be managed and provisioned by the Zyxel Nebula Control Center (NCC). When the Switch is in
standalone mode, it can be configured and managed by the Web Configurator.
The following table describes the hardware features of the Switch by model.
Table 1 GS1915 Series Comparison Table
FEATURES GS1915-8 GS1915-8EP GS1915-24E GS1915-24EP
Number of 10/100/1000 Mbps
Ethernet ports
882424
Number of 10/100/1000 Mbps PoE
ports
08012
Total system ports 8 8 24 24
Auto-Fan Fanless Fanless Fanless Yes
Rubber feet for desktop placement Yes Yes Yes Yes
Wall-mount Yes Yes Yes Yes
Rack-mount No No Yes Yes
Reboot Function Yes* Yes* Yes* Yes**
Note: * Press the RESTORE button for 3 to 6 seconds.
** Press the RESET button for 1 second.
Reset to Factory Default Function Yes Yes Yes Yes
Note: Press the RESTORE button for more than 6 seconds.

Chapter 1 Getting to Know Your Switch
GS1915 Series User’s Guide
19
1.1.1 Management Modes
NebulaFlex means you can set the Switch to operate in either cloud mode or standalone (but not both
at the same time).
Use the DHCP-assigned IP address to access the Web Configurator. To know the IP address, use the
NCC, the ZON utility, or the console port if available. You can also use the domain name “setup.zyxel” to
access the Web Configurator when you are directly connected to the Switch. Make sure your PC can
connect to a DNS server via the switch.
Use the Web Configurator to configure and manage the Switch using Nebula Control Center (NCC) in
cloud mode or configure and manage the Switch directly in standalone mode. The Nebula Control
Center (NCC) is an alternative cloud-based network management system that allows you to remotely
manage and monitor the Switch. You may also access a minimized version of the Web Configurator in
cloud mode.
Nebula Cloud Management
To have Nebula manage the Switch, you must first register it at the Nebula web portal at https://
nebula.zyxel.com, and ensure that Nebula Control Center Discovery is enabled in Basic Setting > Cloud
Management in the Switch Web Configurator.
Note: See the Switch’s datasheet for the feature differences between Nebula cloud and
standalone 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.
Figure 1 NCC Example Network Topology

Chapter 1 Getting to Know Your Switch
GS1915 Series User’s Guide
20
1.1.2 Mode Changing
This section describes how to change the Switch’s management mode.
Note: If you change the Switch’s management mode from standalone mode to Nebula-
managed mode, the configuration settings of the Switch will be overwritten with what
you have configured in Nebula.
Note: If you change the Switch’s management mode from Nebula-managed mode to
standalone mode, the Switch will reset to its factory-default settings.
From Standalone to Nebula Cloud Management
To manage your Switch through Nebula, connect the Switch to the Internet, and register it to a site and
organization at the Nebula web portal (https://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
1Go to the Nebula web portal in one of three ways.
• Enter https://nebula.zyxel.com in a supported web browser. See the Nebula User’s Guide for more
information about supported browsers.
• Click Visit Nebula in the Switch’s login page.
• Click the Nebula icon in the upper right of the Switch’s Web Configurator.
2Click Get Started in the Nebula web portal. Enter your myZyxel account information. You will be
redirected to another screen where you can sign up for a myZyxel account if you do not have one.
3Create an organization and a site (using the Nebula setup wizard) or select an existing organization.
4Register the Switch by entering its Registration MAC Address and serial number and assign it to the site.
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
1Download and open the Zyxel Nebula Mobile app in your mobile device. Click Start on the first page.
Click Create account to create a myZyxel account or enter your existing account information to log in.
2Create an organization and site, or select an existing organization using the Zyxel Nebula Mobile app.
3Select a site and scan the Switch's QR code or manually enter the information 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 Setting > Cloud Management.
See Section 3.3 on page 37 for more information about the CLOUD LED or Section 7.2 on page 78 for
more information about the Hybrid Mode field in the Status screen to see if the Switch goes into Nebula
cloud management mode successfully.