ZyXEL GS1920 User Manual

GS1920 Series

Intelligent Layer 2 GbE Switch

Version 4.10

Edition 2, 03/2014

Quick Start Guide

User’s Guide

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Copyright © 2013 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.

2
	GS1920 Series User’s Guide

	Contents Overview
	Contents Overview
User’s Guide .......................................................................................................................................	17
Getting to Know Your Switch ...................................................................................................................	19
Hardware Installation and Connection ....................................................................................................	24
Hardware Panels .....................................................................................................................................	27
Technical Reference ..........................................................................................................................	33
The Web Configurator .............................................................................................................................	35
Initial Setup Example ..............................................................................................................................	42
Tutorials ..................................................................................................................................................	46
System Status and Port Status ................................................................................................................	54
Basic Setting ..........................................................................................................................................	59
VLAN .......................................................................................................................................................	85
Static MAC Forward Setup ....................................................................................................................	101
Static Multicast Forward Setup ..............................................................................................................	103
Filtering ..............................................................................................................................................	106
Spanning Tree Protocol .........................................................................................................................	108
Bandwidth Control .................................................................................................................................	127
Broadcast Storm Control .......................................................................................................................	129
Mirroring ................................................................................................................................................	131
Link Aggregation ...................................................................................................................................	133
Port Authentication ................................................................................................................................	140
Port Security ..........................................................................................................................................	146
Classifier ...............................................................................................................................................	149
Policy Rule ...........................................................................................................................................	154
Queuing Method ....................................................................................................................................	158
Multicast ................................................................................................................................................	161
AAA .......................................................................................................................................................	175
IP Source Guard ...................................................................................................................................	187
Loop Guard ...........................................................................................................................................	210
Layer 2 Protocol Tunneling ...................................................................................................................	214
PPPoE ...................................................................................................................................................	218
Error Disable .........................................................................................................................................	227
Green Ethernet ......................................................................................................................................	233
Link Layer Discovery Protocol (LLDP) ..................................................................................................	235
Static Route ..........................................................................................................................................	259
Differentiated Services .......................................................................................................................	262
DHCP ...................................................................................................................................................	266
ARP Setup ............................................................................................................................................	280

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

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GS1920 Series User’s Guide

		Table of Contents
		Table of Contents
Contents Overview ...............................................................................................................................		3
Table of Contents .................................................................................................................................		5
Part I: User’s Guide .........................................................................................		17
Chapter	1
Getting to Know Your Switch.............................................................................................................		19
1.1	Introduction .......................................................................................................................................	19
	1.1.1 Backbone Application ..............................................................................................................	20
	1.1.2 Bridging Example ....................................................................................................................	20
	1.1.3 High Performance Switching Example ....................................................................................	21
	1.1.4 IEEE 802.1Q VLAN Application Examples ..............................................................................	21
1.2	Ways to Manage the Switch ..............................................................................................................	22
1.3	Good Habits for Managing the Switch ...............................................................................................	22
Chapter	2
Hardware Installation and Connection .............................................................................................		24
2.1	Installation Scenarios ........................................................................................................................	24
2.2	Desktop Installation Procedure ........................................................................................................	24
2.3	Mounting the Switch on a Rack ........................................................................................................	24
	2.3.1 Rack-mounted Installation Requirements ................................................................................	24
	2.3.2 Attaching the Mounting Brackets to the Switch .......................................................................	25
	2.3.3 Mounting the Switch on a Rack ...............................................................................................	25
Chapter	3
Hardware Panels.................................................................................................................................		27
3.1	Front Panel ........................................................................................................................................	27
	3.1.1 Gigabit Ethernet Ports ............................................................................................................	27
	3.1.2 Mini-GBIC Slots .......................................................................................................................	28
	3.1.3 LED Mode (only available for GS1920-48HP) .........................................................................	30
3.2	Rear Panel ........................................................................................................................................	30
	3.2.1 Power Connector .....................................................................................................................	30
3.3	LEDs ...............................................................................................................................................	31
3.4	Reset to Factory Defaults ..................................................................................................................	31
	3.4.1 Side Panels .............................................................................................................................	32

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Table of Contents

Part II: Technical Reference............................................................................		33
Chapter	4
The Web Configurator ........................................................................................................................		35
4.1	Overview ...........................................................................................................................................	35
4.2	System Login .................................................................................................................................	35
4.3	The Status Screen ........................................................................................................................	36
	4.3.1 Change Your Password ........................................................................................................	39
4.4	Saving Your Configuration ................................................................................................................	40
4.5	Switch Lockout ................................................................................................................................	40
4.6	Resetting the Switch ......................................................................................................................	41
4.7	Logging Out of the Web Configurator ..............................................................................................	41
4.8	Help ..................................................................................................................................................	41
Chapter	5
Initial Setup Example..........................................................................................................................		42
5.1	Overview ...........................................................................................................................................	42
	5.1.1 Creating a VLAN ......................................................................................................................	42
	5.1.2 Setting Port VID .......................................................................................................................	43
5.2	Configuring Switch Management IP Address ....................................................................................	44
Chapter	6
Tutorials...............................................................................................................................................		46
6.1	Overview ...........................................................................................................................................	46
6.2	How to Use DHCP Snooping on the Switch ......................................................................................	46
6.3	How to Use DHCP Relay on the Switch ............................................................................................	49
	6.3.1 DHCP Relay Tutorial Introduction ............................................................................................	49
	6.3.2 Creating a VLAN ......................................................................................................................	50
	6.3.3 Configuring DHCP Relay .........................................................................................................	52
	6.3.4 Troubleshooting .......................................................................................................................	53
Chapter	7
System Status and Port Status..........................................................................................................		54
7.1	Overview ...........................................................................................................................................	54
	7.1.1 What You Can Do ....................................................................................................................	54
7.2	Port Status Summary ...................................................................................................................	54
	7.2.1 Status: Port Details .............................................................................................................	55
Chapter	8
Basic Setting ......................................................................................................................................		59
8.1	Overview ...........................................................................................................................................	59
	8.1.1 What You Can Do ....................................................................................................................	59
8.2	System Information ........................................................................................................................	59

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8.3	General Setup ...............................................................................................................................	61
8.4	Introduction to VLANs ......................................................................................................................	63
8.5	Switch Setup Screen ......................................................................................................................	64
8.6	IP Setup ...........................................................................................................................................	65
	8.6.1 Management IP Addresses .....................................................................................................	65
8.7	Port Setup ........................................................................................................................................	67
8.8	PoE Status .......................................................................................................................................	69
	8.8.1 PoE Setup ..............................................................................................................................	71
8.9	Interface Setup ..................................................................................................................................	72
8.10 IPv6 .................................................................................................................................................		73
	8.10.1 IPv6 Interface Status .............................................................................................................	74
	8.10.2 IPv6 Configuration .................................................................................................................	77
	8.10.3 IPv6 Global Setup ..................................................................................................................	77
	8.10.4 IPv6 Interface Setup ..............................................................................................................	78
	8.10.5 IPv6 Link-Local Address Setup .............................................................................................	79
	8.10.6 IPv6 Global Address Setup ...................................................................................................	80
	8.10.7 IPv6 Neighbor Discovery Setup .............................................................................................	81
	8.10.8 IPv6 Neighbor Setup .............................................................................................................	82
	8.10.9 DHCPv6 Client Setup ............................................................................................................	83
Chapter	9
VLAN ....................................................................................................................................................		85
9.1	Overview ...........................................................................................................................................	85
	9.1.1 What You Can Do ....................................................................................................................	85
	9.1.2 What You Need to Know ..........................................................................................................	85
9.2	VLAN Status .....................................................................................................................................	88
	9.2.1 VLAN Details ..........................................................................................................................	89
9.3	Configure a Static VLAN ...............................................................................................................	89
9.4	Configure VLAN Port Settings .......................................................................................................	91
9.5	Subnet Based VLANs ......................................................................................................................	92
	9.5.1 Configuring Subnet Based VLAN ..........................................................................................	93
9.6	Protocol Based VLANs .....................................................................................................................	94
	9.6.1 Configuring Protocol Based VLAN ........................................................................................	95
9.7	Port-based VLAN Setup ...............................................................................................................	96
	9.7.1 Configure a Port-based VLAN ................................................................................................	97
9.8	Technical Reference ..........................................................................................................................	99
	9.8.1 Create an IP-based VLAN Example ........................................................................................	99
Chapter	10
Static MAC Forward Setup...............................................................................................................		101
10.1 Overview .......................................................................................................................................		101
	10.1.1 What You Can Do ................................................................................................................	101
10.2 Configuring Static MAC Forwarding .........................................................................................		101

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Chapter	11
Static Multicast Forward Setup .......................................................................................................			103
11.1 Static Multicast Forward Setup Overview .....................................................................................			103
	11.1.1 What You Can Do ................................................................................................................		103
	11.1.2 What You Need To Know .....................................................................................................		103
11.2 Configuring Static Multicast Forwarding ........................................................................................			104
Chapter	12
Filtering...........................................................................................................................................			106
12.1		Filtering Overview ........................................................................................................................	106
	12.1.1 What You Can Do ................................................................................................................		106
12.2		Configure a Filtering Rule ............................................................................................................	106
Chapter	13
Spanning Tree Protocol....................................................................................................................			108
13.1		Spanning Tree Protocol Overview .................................................................................................	108
	13.1.1 What You Can Do ................................................................................................................		108
	13.1.2 What You Need to Know ......................................................................................................		108
13.2		Spanning Tree Protocol Status Screen .........................................................................................	111
13.3		Spanning Tree Configuration .......................................................................................................	111
13.4		Configure Rapid Spanning Tree Protocol ...................................................................................	112
13.5		Rapid Spanning Tree Protocol Status .....................................................................................	114
13.6		Configure Multiple Rapid Spanning Tree Protocol .....................................................................	115
13.7		Multiple Rapid Spanning Tree Protocol Status ........................................................................	117
13.8		Configure Multiple Spanning Tree Protocol ................................................................................	118
13.9		Multiple Spanning Tree Port Configuration ...................................................................................	121
13.10 Multiple Spanning Tree Protocol Status ................................................................................			122
13.11 Technical Reference ....................................................................................................................			124
	13.11.1 MSTP Network Example ....................................................................................................		124
	13.11.2 MST Region .......................................................................................................................		125
	13.11.3 MST Instance .....................................................................................................................		126
	13.11.4 Common and Internal Spanning Tree (CIST) ....................................................................		126
Chapter	14
Bandwidth Control............................................................................................................................			127
14.1		Overview ......................................................................................................................................	127
	14.1.1 What You Can Do ................................................................................................................		127
14.2		Bandwidth Control Setup ..............................................................................................................	127
Chapter	15
Broadcast Storm Control .................................................................................................................			129
15.1		Broadcast Storm Control Overview ..............................................................................................	129
	15.1.1 What You Can Do ................................................................................................................		129

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15.2	Broadcast Storm Control Setup .....................................................................................................	129
Chapter	16
Mirroring		131
16.1	Mirroring Overview .......................................................................................................................	131
	16.1.1 What You Can Do ................................................................................................................	131
16.2	Port Mirroring Setup ......................................................................................................................	131
Chapter	17
Link Aggregation ..............................................................................................................................		133
17.1 ......................................................................................................................................	Overview	133
................................................................................................................	17.1.1 What You Can Do	133
......................................................................................................	17.1.2 What You Need to Know	133
17.2 ................................................................................................................	Link Aggregation Status	134
17.3 .............................................................................................................	Link Aggregation Setting	135
17.4 .............................................................................................	Link Aggregation Control Protocol	137
17.5 ......................................................................................................................	Technical Reference	138
......................................................................................................	17.5.1 Static Trunking Example	138
Chapter	18
Port Authentication ..........................................................................................................................		140
18.1 .......................................................................................................	Port Authentication Overview	140
................................................................................................................	18.1.1 What You Can Do	140
......................................................................................................	18.1.2 What You Need to Know	140
18.2 .................................................................................................	Port Authentication Configuration	141
18.3 ..................................................................................................	Activate IEEE 802.1x Security	141
........................................................................................................................	18.3.1 Guest VLAN	143
Chapter	19
Port Security .....................................................................................................................................		146
19.1 .................................................................................................................	Port Security Overview	146
................................................................................................................	19.1.1 What You Can Do	146
19.2 .......................................................................................................................	Port Security Setup	146
Chapter	20
Classifier............................................................................................................................................		149
20.1 .......................................................................................................................................	Overview	149
................................................................................................................	20.1.1 What You Can Do	149
......................................................................................................	20.1.2 What You Need to Know	149
20.2 .............................................................................................................	Configuring the Classifier	149
......................................................................	20.2.1 Viewing and Editing Classifier Configuration	151
20.3 ........................................................................................................................	Classifier Example	153

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Table of Contents

Chapter 21
Policy Rule .......................................................................................................................................		154
21.1	Policy Rules Overview .................................................................................................................	154
21.1.1 What You Can Do ................................................................................................................		154
21.2	Configuring Policy Rules ...............................................................................................................	154
21.2.1 Viewing and Editing Policy Configuration ...........................................................................		157
21.3	Policy Example ..............................................................................................................................	157
Chapter 22
Queuing Method ...............................................................................................................................		158
22.1	Queuing Method Overview ............................................................................................................	158
22.1.1 What You Can Do ................................................................................................................		158
22.1.2 What You Need to Know ......................................................................................................		158
22.2	Configuring Queuing .....................................................................................................................	159
Chapter 23
Multicast ............................................................................................................................................		161
23.1	Multicast Overview ........................................................................................................................	161
23.1.1 What You Can Do ................................................................................................................		161
23.1.2 What You Need to Know ......................................................................................................		161
23.2	Multicast Setup ..............................................................................................................................	163
23.3	IPv4 Multicast Status ....................................................................................................................	164
23.3.1 IGMP Snooping ..................................................................................................................		164
23.4 IGMP Snooping VLAN .................................................................................................................		167
23.4.1 IGMP Filtering Profile .........................................................................................................		168
23.5	General MVR Configuration .........................................................................................................	170
23.5.1 MVR Group Configuration ..................................................................................................		171
23.5.2 MVR Configuration Example ...............................................................................................		173
Chapter 24
AAA ....................................................................................................................................................		175
24.1	AAA Overview ...............................................................................................................................	175
24.1.1 What You Can Do ................................................................................................................		175
24.1.2 What You Need to Know ......................................................................................................		175
24.2	AAA Screens .................................................................................................................................	176
24.3	RADIUS Server Setup ...............................................................................................................	176
24.4	TACACS+ Server Setup ............................................................................................................	178
24.5	AAA Setup ....................................................................................................................................	180
24.6	Technical Reference ......................................................................................................................	182
24.6.1 Vendor Specific Attribute .....................................................................................................		182
24.6.2 Supported RADIUS Attributes .............................................................................................		184
24.6.3 Attributes Used for Authentication .......................................................................................		184

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		Table of Contents
Chapter 25
IP Source Guard................................................................................................................................		187
25.1	Overview .......................................................................................................................................	187
25.1.1 What You Can Do ................................................................................................................		187
25.1.2 What You Need to Know ......................................................................................................		188
25.2	IP Source Guard ..........................................................................................................................	188
25.3	IP Source Guard Static Binding ....................................................................................................	189
25.4 DHCP Snooping ...........................................................................................................................		190
25.5	DHCP Snooping Configure ..........................................................................................................	193
25.5.1 DHCP Snooping Port Configure .........................................................................................		195
25.5.2 DHCP Snooping VLAN Configure ......................................................................................		197
25.5.3 DHCP Snooping VLAN Port Configure ................................................................................		197
25.6	ARP Inspection Status .................................................................................................................	199
25.7	ARP Inspection VLAN Status ........................................................................................................	200
25.8	ARP Inspection Log Status ...........................................................................................................	200
25.9	ARP Inspection Configure .............................................................................................................	202
25.9.1 ARP Inspection Port Configure ............................................................................................		203
25.9.2 ARP Inspection VLAN Configure .........................................................................................		205
25.10 Technical Reference ....................................................................................................................		206
25.10.1 DHCP Snooping Overview ................................................................................................		206
25.10.2 ARP Inspection Overview ..................................................................................................		208
Chapter 26
Loop Guard .......................................................................................................................................		210
26.1	Loop Guard Overview ..................................................................................................................	210
26.1.1 What You Can Do ................................................................................................................		210
26.1.2 What You Need to Know ......................................................................................................		210
26.2	Loop Guard Setup .........................................................................................................................	212
Chapter 27
Layer 2 Protocol Tunneling..............................................................................................................		214
27.1	Layer 2 Protocol Tunneling Overview ..........................................................................................	214
27.1.1 What You Can Do ................................................................................................................		214
27.1.2 What You Need to Know ......................................................................................................		214
27.2	Configuring Layer 2 Protocol Tunneling ........................................................................................	215
Chapter 28
PPPoE ................................................................................................................................................		218
28.1	PPPoE Intermediate Agent Overview ...........................................................................................	218
28.1.1 What You Can Do ................................................................................................................		218
28.1.2 What You Need to Know ......................................................................................................		218
28.2 The PPPoE Screen .......................................................................................................................		221
28.3	PPPoE Intermediate Agent ..........................................................................................................	221

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28.3.1 PPPoE IA Per-Port .............................................................................................................		222
28.3.2 PPPoE IA Per-Port Per-VLAN ............................................................................................		224
28.3.3 PPPoE IA for VLAN ............................................................................................................		225
Chapter 29
Error Disable .....................................................................................................................................		227
29.1	Error Disable Overview .................................................................................................................	227
29.2	The Error Disable Screens Overview ............................................................................................	227
29.3	Error-Disable Status .....................................................................................................................	227
29.4	CPU Protection Configuration ......................................................................................................	229
29.5	Error-Disable Detect Configuration ..............................................................................................	230
29.6	Error-Disable Recovery Configuration .........................................................................................	231
Chapter 30
Green Ethernet..................................................................................................................................		233
30.1	Green Ethernet Overview .............................................................................................................	233
30.2	Configuring Green Ethernet ..........................................................................................................	233
Chapter 31
Link Layer Discovery Protocol (LLDP) ...........................................................................................		235
31.1	LLDP Overview .............................................................................................................................	235
31.2 LLDP-MED Overview ....................................................................................................................		236
31.3	LLDP Screens ...............................................................................................................................	237
31.4	LLDP Local Status ........................................................................................................................	238
31.4.1 LLDP Local Port Status Detail ............................................................................................		239
31.5	LLDP Remote Status ....................................................................................................................	243
31.5.1 LLDP Remote Port Status Detail ........................................................................................		244
31.6	LLDP Configuration ......................................................................................................................	250
31.6.1 LLDP Configuration Basic TLV Setting ...............................................................................		252
31.6.2 LLDP Configuraion Basic Org-specific TLV Setting ............................................................		253
31.7	LLDP-MED Configuration .............................................................................................................	254
31.8	LLDP-MED Network Policy .........................................................................................................	255
31.9	LLDP-MED Location ...................................................................................................................	256
Chapter 32
Static Route ......................................................................................................................................		259
32.1	Static Route Overview ..................................................................................................................	259
32.1.1 What You Can Do ................................................................................................................		259
32.2	Static Routing ................................................................................................................................	259
32.3	Configuring Static Routing ..........................................................................................................	259
Chapter 33
Differentiated Services..................................................................................................................		262

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33.1	Differentiated Services Overview .................................................................................................	262
33.1.1 What You Can Do ................................................................................................................		262
33.1.2 What You Need to Know ......................................................................................................		262
33.2	Activating DiffServ ........................................................................................................................	263
33.3	DSCP-to-IEEE 802.1p Priority Settings ......................................................................................	264
33.3.1 Configuring DSCP Settings .................................................................................................		265
Chapter 34
DHCP.................................................................................................................................................		266
34.1 DHCP Overview ............................................................................................................................		266
34.1.1 What You Can Do ................................................................................................................		266
34.1.2 What You Need to Know ......................................................................................................		266
34.2	DHCP Configuration ......................................................................................................................	267
34.3	DHCPv4 Status ............................................................................................................................	268
34.4 DHCPv4 Relay .............................................................................................................................		268
34.4.1 DHCPv4 Relay Agent Information .......................................................................................		268
34.4.2 DHCPv4 Option 82 Profile ...................................................................................................		269
34.4.3 Configuring DHCPv4 Global Relay ......................................................................................		271
34.4.4 DHCPv4 Global Relay Port Configure ................................................................................		272
34.4.5 Global DHCP Relay Configuration Example .......................................................................		273
34.5	Configuring DHCPv4 VLAN Settings .........................................................................................	274
34.5.1 DHCPv4 VLAN Port Configure ...........................................................................................		276
34.5.2 Example: DHCP Relay for Two VLANs ...............................................................................		277
34.6 DHCPv6 Relay ..............................................................................................................................		278
Chapter 35
ARP Setup	.........................................................................................................................................	280
35.1	ARP Overview ..............................................................................................................................	280
35.1.1 What You Can Do ................................................................................................................		280
35.1.2 What You Need to Know ......................................................................................................		280
35.2 ARP Setup ....................................................................................................................................		282
35.2.1 ARP Learning .....................................................................................................................		282
Chapter 36
Maintenance ......................................................................................................................................		284
36.1	Overview .......................................................................................................................................	284
36.1.1 What You Can Do ................................................................................................................		284
36.2	The Maintenance Screen ............................................................................................................	284
36.2.1 Load Factory Default ..........................................................................................................		285
36.2.2 Save Configuration ..............................................................................................................		285
36.2.3 Reboot System ....................................................................................................................		286
36.3	Firmware Upgrade .....................................................................................................................	286
36.4	Restore a Configuration File ......................................................................................................	287

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36.5	Backup a Configuration File .......................................................................................................	288
36.6	Tech-Support ................................................................................................................................	288
36.7	Technical Reference ......................................................................................................................	290
36.7.1 FTP Command Line ............................................................................................................		290
36.7.2 Filename Conventions ........................................................................................................		290
36.7.3 FTP Command Line Procedure ..........................................................................................		291
36.7.4 GUI-based FTP Clients ........................................................................................................		291
36.7.5 FTP Restrictions .................................................................................................................		292

Chapter	37
Access Control .................................................................................................................................			293
37.1		Access Control Overview ............................................................................................................	293
	37.1.1 What You Can Do ................................................................................................................		293
37.2		The Access Control Main Screen ..................................................................................................	293
37.3		Configuring SNMP ....................................................................................................................	294
	37.3.1 Configuring SNMP Trap Group .........................................................................................		295
	37.3.2 Enabling/Disabling Sending of SNMP Traps on a Port ........................................................		296
	37.3.3 Configuring SNMP User ...................................................................................................		297
37.4		Setting Up Login Accounts ..........................................................................................................	299
37.5		Service Port Access Control .......................................................................................................	300
37.6 Remote Management ..............................................................................................................			301
37.7		Technical Reference ......................................................................................................................	303
	37.7.1 About SNMP ......................................................................................................................		303
	37.7.2 Introduction to HTTPS .........................................................................................................		305
Chapter	38
Diagnostic		.........................................................................................................................................	311
38.1		Overview .......................................................................................................................................	311
38.2		Diagnostic ....................................................................................................................................	311
Chapter	39
Syslog ................................................................................................................................................			313
39.1		Syslog Overview ...........................................................................................................................	313
	39.1.1 What You Can Do ................................................................................................................		313
39.2		Syslog Setup .................................................................................................................................	313
39.3		Syslog Server Setup ....................................................................................................................	314
Chapter	40
Cluster Management ........................................................................................................................			316
40.1		Cluster Management Overview ....................................................................................................	316
	40.1.1 What You Can Do ................................................................................................................		317
40.2		Cluster Management Status ..........................................................................................................	317
40.3		Clustering Management Configuration ........................................................................................	318

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40.4		Technical Reference ......................................................................................................................	320
	40.4.1 Cluster Member Switch Management ................................................................................		320
Chapter	41
MAC Table		.........................................................................................................................................	322
41.1		MAC Table Overview ....................................................................................................................	322
	41.1.1 What You Can Do ................................................................................................................		322
	41.1.2 What You Need to Know ......................................................................................................		322
41.2		Viewing the MAC Table ................................................................................................................	323
Chapter	42
ARP Table ..........................................................................................................................................			325
42.1		Overview .......................................................................................................................................	325
	42.1.1 What You Can Do ................................................................................................................		325
	42.1.2 What You Need to Know ......................................................................................................		325
42.2		Viewing the ARP Table ..................................................................................................................	325
Chapter	43
Path MTU Table .................................................................................................................................			327
43.1		Path MTU Overview .....................................................................................................................	327
43.2		Viewing the Path MTU Table .........................................................................................................	327
Chapter	44
Configure Clone................................................................................................................................			328
44.1		Overview .......................................................................................................................................	328
44.2		Configure Clone ...........................................................................................................................	328
Chapter	45
Neighbor Table..................................................................................................................................			330
45.1		IPv6 Neighbor Table Overview .....................................................................................................	330
45.2		Viewing the IPv6 Neighbor Table ..................................................................................................	330
Chapter	46
Troubleshooting................................................................................................................................			336
46.1		Power, Hardware Connections, and LEDs ....................................................................................	336
46.2		Switch Access and Login ..............................................................................................................	337
46.3		Switch Configuration .....................................................................................................................	339
Appendix	A Customer Support ........................................................................................................		340
Appendix	B Common Services ........................................................................................................		346
Appendix	C IPv6 ..............................................................................................................................		349
Appendix	D Legal Information .........................................................................................................		357

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Table of Contents

Index .................................................................................................................................................

360

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PART I

User’s Guide

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1

Getting to Know Your Switch

1.1 Introduction

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

•GS1920-24

•GS1920-24HP

•GS1920-48

•GS1920-48HP

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

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

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

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

Table 1 Models and Port Features

SWITCH MODEL	PORT FEATURES
GS1920-24 and GS1920-	•	20 100/1000 Mbps Ethernet ports
24HP	•	4	GbE dual personality interfaces
	• 4 mini-GBIC slots
	• 4 100/1000 Mbos RJ-45 ports
	•	4	SFP interfaces
GS1920-48 and GS1920-	•	44 100/1000 Mbps Ethernet ports
48HP	•	4	GbE dual personality interfaces
	• 4 mini-GBIC slots
	• 4 100/1000 Mbos RJ-45 ports
	•	4	SFP interfaces

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

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

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

Table 2 Models and PoE Features

SWITCH MODEL	POE FEATURES
GS1920-24HP and	IEEE 802.3af PoE
GS1920-48HP
GS1920-24HP and	IEEE 802.3 at High Power over Ethernet (PoE)
GS1920-48HP
GS1920-24HP and	Power management mode - Classification
GS1920-48HP
GS1920-24HP and	Power management mode - Consumption
GS1920-48HP

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

1.1.1 Backbone Application

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

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

Figure 1 Backbone Application

1.1.2 Bridging Example

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

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

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Figure 2 Bridging Application

1.1.3 High Performance Switching Example

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

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

Figure 3 High Performance Switched Workgroup Application

1.1.4 IEEE 802.1Q VLAN Application Examples

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

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

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1.1.4.1 Tag-based VLAN Example

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

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

Figure 4 Shared Server Using VLAN Example

1.2 Ways to Manage the 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 35.

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

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

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

1.3Good 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.

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

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2

Hardware Installation and Connection

2.1 Installation Scenarios

This chapter shows you how to install and connect the Switch.

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

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

2.2 Desktop Installation Procedure

1Make sure the Switch is clean and dry.

2Set 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.

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

2.3Mounting the Switch on a Rack

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

2.3.1Rack-mounted Installation Requirements

•Two mounting brackets.

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

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

Failure to use the proper screws may damage the unit.

2.3.1.1Precautions

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

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Chapter 2 Hardware Installation and Connection

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

2.3.2Attaching the Mounting Brackets to the Switch

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

Figure 5 Attaching the Mounting Brackets

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

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

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

2.3.3Mounting the Switch on a Rack

1Position 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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Figure 6 Mounting the Switch on a Rack

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

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

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3

Hardware Panels

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

3.1 Front Panel

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

Figure 7 Front Panel: GS1920-24

Figure 8 Front Panel: GS1920-24HP

Figure 9 Front Panel: GS1920-48

Figure 10 Front Panel: GS1920-48HP

3.1.1 Gigabit Ethernet Ports

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

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

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

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Chapter 3 Hardware Panels

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

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

When auto-negotiation is turned on, an Ethernet port negotiates with the peer automatically to determine the connection speed and duplex mode. If the peer Ethernet port does not support 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

3.1.1.2Auto-crossover

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

3.1.2 Mini-GBIC Slots

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

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

•Type: SFP connection interface

•Connection speed: 1 Gigabit per second (Gbps)

3.1.2.1Transceiver Installation

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

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

2Press the transceiver firmly until it clicks into place.

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

4Close the transceiver’s latch (latch styles vary).

5Connect the fiber optic cables to the transceiver. Figure 11 Transceiver Installation Example

Figure 12 Connecting the Fiber Optic Cables

3.1.2.2Transceiver Removal

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

1Remove the fiber optic cables from the transceiver.

2Open the transceiver’s latch (latch styles vary).

3Pull the transceiver out of the slot.

Figure 13 Removing the Fiber Optic Cables

Figure 14 Opening the Transceiver’s Latch Example

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Figure 15 Transceiver Removal Example

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

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

3.2 Rear Panel

The following figures show the rear panels of the Switch.

Figure 16 Rear panel: GS1920-24

Figure 17 Rear Panel: GS1920-24HP

Figure 18 Rear Panel: GS1920-48

Figure 19 Rear Panel: GS1920-48HP

3.2.1 Power Connector

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

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

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