ZyXEL Communications MGS3520 Series User manual

Quick Start Guide
www.zyxel.com
MGS3520 Series
Layer 2 Management Switch
Version 4.10
Edition 1, 12/2015
Copyright © 2015 ZyXEL Communications Corporation
User’s Guide
Default Login Details
LAN IP Address http://192.168.1.1
User Name admin
Password 1234

MGS3520 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 and access the Web Configurator.
• CLI Reference Guide
The CLI Reference Guide explains how to use the Command-Line Interface (CLI) and CLI
commands to configure the Switch.
Note: It is recommended you use the Web Configurator to configure the Switch.
• Web Configurator Online Help
Click the help icon in any screen for help in configuring that screen and supplementary
information.
•MoreInformation
Go to support.zyxel.com to find other information on the Switch.

Contents Overview
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Contents Overview
User’s Guide .......................................................................................................................................18
Getting to Know Your Switch ...................................................................................................................19
Hardware Installation and Connection ....................................................................................................23
Hardware Overview .................................................................................................................................26
The Web Configurator .............................................................................................................................34
Initial Setup Example ..............................................................................................................................42
Tutorials ..................................................................................................................................................46
Technical Reference ..........................................................................................................................71
System Status and Port Statistics ...........................................................................................................72
Basic Setting ..........................................................................................................................................77
VLAN .....................................................................................................................................................100
Static MAC Forward Setup ....................................................................................................................120
Static Multicast Forward Setup ..............................................................................................................122
Filtering .................................................................................................................................................125
Spanning Tree Protocol .........................................................................................................................127
Bandwidth Control .................................................................................................................................146
Broadcast Storm Control .......................................................................................................................148
Mirroring ................................................................................................................................................150
Link Aggregation ...................................................................................................................................156
Port Authentication ................................................................................................................................163
Port Security ..........................................................................................................................................171
Range Profile ........................................................................................................................................174
Classifier ...............................................................................................................................................179
Policy Rule ............................................................................................................................................185
Queuing Method ....................................................................................................................................190
VLAN Stacking ......................................................................................................................................193
Multicast ................................................................................................................................................200
AAA .......................................................................................................................................................223
IP Source Guard ...................................................................................................................................236
Loop Guard ...........................................................................................................................................257
VLAN Mapping ......................................................................................................................................260
Layer 2 Protocol Tunneling ...................................................................................................................263
sFlow .....................................................................................................................................................267
PPPoE ...................................................................................................................................................271
Error Disable .........................................................................................................................................279
Private VLAN .........................................................................................................................................285
Green Ethernet ......................................................................................................................................287

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Link Layer Discovery Protocol (LLDP) ..................................................................................................289
Static Route ...........................................................................................................................................314
Differentiated Services ..........................................................................................................................317
DHCP ....................................................................................................................................................321
ARP Setup ............................................................................................................................................335
Maintenance ..........................................................................................................................................339
Access Control ......................................................................................................................................348
Diagnostic .............................................................................................................................................372
Syslog ...................................................................................................................................................374
Cluster Management .............................................................................................................................377
MAC Table .............................................................................................................................................384
ARP Table .............................................................................................................................................387
Path MTU Table ....................................................................................................................................389
Configure Clone ....................................................................................................................................390
Neighbor Table ......................................................................................................................................393
Troubleshooting ....................................................................................................................................395

Table of Contents
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Table of Contents
Contents Overview ..............................................................................................................................3
Table of Contents .................................................................................................................................5
Part I: User’s Guide .........................................................................................18
Chapter 1
Getting to Know Your Switch.............................................................................................................19
1.1 Introduction .......................................................................................................................................19
1.1.1 Backbone Application ..............................................................................................................19
1.1.2 Bridging Example ....................................................................................................................20
1.1.3 High Performance Switching Example ....................................................................................20
1.1.4 IEEE 802.1Q VLAN Application Examples ..............................................................................21
1.1.5 IPv6 Support ............................................................................................................................22
1.2 Ways to Manage the Switch ..............................................................................................................22
1.3 Good Habits for Managing the Switch ...............................................................................................22
Chapter 2
Hardware Installation and Connection .............................................................................................23
2.1 Installation Scenarios ........................................................................................................................23
2.2 Desktop Installation Procedure ........................................................................................................23
2.3 Mounting the Switch on a Rack ........................................................................................................23
2.3.1 Rack-mounted Installation Requirements ................................................................................23
2.3.2 Attaching the Mounting Brackets to the Switch .......................................................................24
2.3.3 Mounting the Switch on a Rack ...............................................................................................24
Chapter 3
Hardware Overview ............................................................................................................................26
3.1 Front Panel .......................................................................................................................................26
3.1.1 Console Port ............................................................................................................................27
3.1.2 Ethernet Ports .........................................................................................................................28
3.1.3 Transceiver Slots .....................................................................................................................28
3.1.4 Power Connector .....................................................................................................................30
3.1.5 Signal Slot ...............................................................................................................................31
3.2 LEDs ................................................................................................................................................33
Chapter 4
The Web Configurator........................................................................................................................34

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4.1 Introduction .......................................................................................................................................34
4.2 System Login .................................................................................................................................34
4.3 The Web Configurator Layout .........................................................................................................35
4.3.1 Change Your Password ........................................................................................................39
4.4 Saving Your Configuration ................................................................................................................39
4.5 Switch Lockout ................................................................................................................................40
4.6 Resetting the Switch ......................................................................................................................40
4.6.1 Reload the Configuration File .................................................................................................40
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 How to Use DHCP Snooping on the Switch ......................................................................................46
6.2 How to Use DHCP Relay on the Switch ............................................................................................49
6.2.1 DHCP Relay Tutorial Introduction ............................................................................................49
6.2.2 Creating a VLAN ......................................................................................................................50
6.2.3 Configuring DHCPv4 Relay .....................................................................................................52
6.2.4 Troubleshooting .......................................................................................................................53
6.3 How to Use PPPoE IA on the Switch ................................................................................................53
6.3.1 Configuring Switch A ...............................................................................................................54
6.3.2 Configuring Switch B ...............................................................................................................56
6.4 How to Use Error Disable and Recovery on the Switch ....................................................................59
6.5 How to Set Up a Guest VLAN ...........................................................................................................61
6.5.1 Creating a Guest VLAN ...........................................................................................................61
6.5.2 Enabling IEEE 802.1x Port Authentication ..............................................................................64
6.5.3 Enabling Guest VLAN ..............................................................................................................65
6.6 How to Do Port Isolation in a VLAN ..................................................................................................66
6.6.1 Creating a VLAN ......................................................................................................................67
6.6.2 Creating a Private VLAN Rule .................................................................................................69
Part II: Technical Reference............................................................................71
Chapter 7
System Status and Port Statistics.....................................................................................................72

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7.1 Overview ...........................................................................................................................................72
7.2 Port Status Summary ...................................................................................................................72
7.2.1 Status: Port Details .............................................................................................................73
Chapter 8
Basic Setting ......................................................................................................................................77
8.1 System Information ........................................................................................................................77
8.2 General Setup ...............................................................................................................................79
8.3 Introduction to VLANs ......................................................................................................................80
8.4 Switch Setup ..................................................................................................................................81
8.5 IP Setup ...........................................................................................................................................83
8.5.1 Management IP Addresses .....................................................................................................83
8.6 Port Setup ........................................................................................................................................85
8.7 Interface Setup ..................................................................................................................................87
8.8 IPv6 ...................................................................................................................................................88
8.8.1 IPv6 Interface Status ...............................................................................................................89
8.8.2 IPv6 Configuration ...................................................................................................................91
8.8.3 IPv6 Global Setup ....................................................................................................................92
8.8.4 IPv6 Interface Setup ................................................................................................................92
8.8.5 IPv6 Link-Local Address Setup ...............................................................................................93
8.8.6 IPv6 Global Address Setup .....................................................................................................94
8.8.7 IPv6 Neighbor Discovery Setup ...............................................................................................95
8.8.8 IPv6 Neighbor Setup ...............................................................................................................96
8.8.9 DHCPv6 Client Setup ..............................................................................................................98
Chapter 9
VLAN..................................................................................................................................................100
9.1 Introduction to IEEE 802.1Q Tagged VLANs .............................................................................100
9.1.1 Forwarding Tagged and Untagged Frames ...........................................................................100
9.2 Automatic VLAN Registration .........................................................................................................101
9.2.1 GARP ....................................................................................................................................101
9.2.2 GVRP ....................................................................................................................................101
9.3 Port VLAN Trunking .......................................................................................................................102
9.4 Select the VLAN Type ....................................................................................................................102
9.5 Static VLAN .....................................................................................................................................102
9.5.1 VLAN Status .........................................................................................................................103
9.5.2 VLAN Details .........................................................................................................................103
9.5.3 Configure a Static VLAN ....................................................................................................104
9.5.4 Configure VLAN Port Settings ...........................................................................................106
9.6 Subnet Based VLANs ....................................................................................................................107
9.6.1 Configuring Subnet Based VLAN .........................................................................................108
9.7 Protocol Based VLANs ................................................................................................................... 110
9.7.1 Configuring Protocol Based VLAN ....................................................................................... 111

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9.7.2 Create an IP-based VLAN Example ...................................................................................... 112
9.8 MAC Based VLAN ........................................................................................................................... 113
9.9 VLAN MAC Learning ....................................................................................................................... 114
9.10 Port-based VLAN Setup ............................................................................................................ 116
9.10.1 Configure a Port-based VLAN .............................................................................................117
Chapter 10
Static MAC Forward Setup...............................................................................................................120
10.1 Overview .......................................................................................................................................120
10.2 Configuring Static MAC Forwarding .........................................................................................120
Chapter 11
Static Multicast Forward Setup .......................................................................................................122
11.1 Static Multicast Forwarding Overview ...........................................................................................122
11.2 Configuring Static Multicast Forwarding ........................................................................................123
Chapter 12
Filtering..............................................................................................................................................125
12.1 Configure a Filtering Rule ...........................................................................................................125
Chapter 13
Spanning Tree Protocol....................................................................................................................127
13.1 STP/RSTP Overview ...................................................................................................................127
13.1.1 STP Terminology ................................................................................................................127
13.1.2 How STP Works .................................................................................................................128
13.1.3 STP Port States ..................................................................................................................128
13.1.4 Multiple RSTP ....................................................................................................................128
13.1.5 Multiple STP ........................................................................................................................129
13.2 Spanning Tree Protocol Status Screen .........................................................................................132
13.3 Spanning Tree Configuration .......................................................................................................132
13.4 Configure Rapid Spanning Tree Protocol ...................................................................................133
13.5 Rapid Spanning Tree Protocol Status ........................................................................................136
13.6 Configure Multiple Rapid Spanning Tree Protocol .....................................................................137
13.7 Multiple Rapid Spanning Tree Protocol Status ........................................................................139
13.8 Configure Multiple Spanning Tree Protocol ................................................................................140
13.8.1 Multiple Spanning Tree Protocol Port Configuration ...........................................................142
13.9 Multiple Spanning Tree Protocol Status ..................................................................................144
Chapter 14
Bandwidth Control............................................................................................................................146
14.1 Bandwidth Control Overview .......................................................................................................146
14.2 Bandwidth Control Setup ..............................................................................................................146

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Chapter 15
Broadcast Storm Control.................................................................................................................148
15.1 Broadcast Storm Control Setup ....................................................................................................148
Chapter 16
Mirroring............................................................................................................................................150
16.1 Port Mirroring Overview ...............................................................................................................150
16.2 Local Port Mirroring Screen ..........................................................................................................152
16.3 RMirror-Source Screen .................................................................................................................153
16.4 RMirror-Destination Screen ..........................................................................................................154
Chapter 17
Link Aggregation ..............................................................................................................................156
17.1 Link Aggregation Overview ..........................................................................................................156
17.2 Dynamic Link Aggregation ...........................................................................................................156
17.2.1 Link Aggregation ID ............................................................................................................157
17.3 Link Aggregation Status ...............................................................................................................157
17.4 Link Aggregation Setting ..............................................................................................................158
17.5 Link Aggregation Control Protocol .............................................................................................160
17.6 Static Trunking Example ...............................................................................................................161
Chapter 18
Port Authentication ..........................................................................................................................163
18.1 Port Authentication Overview .......................................................................................................163
18.1.1 IEEE 802.1x Authentication .................................................................................................163
18.1.2 MAC Authentication .............................................................................................................164
18.2 Port Authentication Configuration .................................................................................................165
18.2.1 Activate IEEE 802.1x Security .........................................................................................165
18.2.2 Guest VLAN ........................................................................................................................167
18.2.3 Activate MAC Authentication ..............................................................................................169
Chapter 19
Port Security .....................................................................................................................................171
19.1 About Port Security .......................................................................................................................171
19.2 Port Security Setup .......................................................................................................................171
Chapter 20
Range Profile.....................................................................................................................................174
20.1 Range Profile Overview ...............................................................................................................174
20.2 Range Profile Screen ....................................................................................................................174
20.3 VLAN Range Profile ......................................................................................................................174
20.4 Port Range Profile ........................................................................................................................175
20.5 IP Address Range Profile ..............................................................................................................176

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20.6 Socket-Port Range Profile ............................................................................................................177
Chapter 21
Classifier............................................................................................................................................179
21.1 About the Classifier and QoS ........................................................................................................179
21.2 Configuring the Classifier .............................................................................................................179
21.3 Viewing and Editing Classifier Configuration ................................................................................182
21.4 Classifier Example ........................................................................................................................183
Chapter 22
Policy Rule ........................................................................................................................................185
22.1 Policy Rules Overview .................................................................................................................185
22.1.1 DiffServ ................................................................................................................................185
22.1.2 DSCP and Per-Hop Behavior ..............................................................................................185
22.2 Configuring Policy Rules ...............................................................................................................185
22.3 Viewing and Editing Policy Configuration ......................................................................................187
22.4 Policy Example ..............................................................................................................................188
Chapter 23
Queuing Method ...............................................................................................................................190
23.1 Queuing Method Overview ...........................................................................................................190
23.1.1 Strictly Priority Queuing .......................................................................................................190
23.1.2 Weighted Fair Queuing ........................................................................................................190
23.1.3 Weighted Round Robin Scheduling (WRR) .........................................................................191
23.2 Configuring Queuing .....................................................................................................................191
Chapter 24
VLAN Stacking ..................................................................................................................................193
24.1 VLAN Stacking Overview .............................................................................................................193
24.1.1 VLAN Stacking Example ......................................................................................................193
24.2 VLAN Stacking Port Roles ............................................................................................................194
24.3 VLAN Tag Format ..........................................................................................................................194
24.3.1 Frame Format ......................................................................................................................195
24.4 Configuring VLAN Stacking ...........................................................................................................195
24.4.1 Port-based Q-in-Q ...............................................................................................................197
24.4.2 Selective Q-in-Q .................................................................................................................198
Chapter 25
Multicast ............................................................................................................................................200
25.1 Multicast Overview .......................................................................................................................200
25.1.1 IP Multicast Addresses ........................................................................................................200
25.1.2 IGMP Filtering ......................................................................................................................200
25.1.3 IGMP Snooping ..................................................................................................................200

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25.1.4 IGMP Snooping and VLANs ................................................................................................201
25.1.5 MLD Snooping-proxy ...........................................................................................................201
25.1.6 MLD Messages ....................................................................................................................202
25.2 Multicast Setup ..............................................................................................................................202
25.3 IPv4 Multicast Status ....................................................................................................................202
25.3.1 IGMP Snooping ..................................................................................................................203
25.3.2 IGMP Snooping VLAN ........................................................................................................206
25.3.3 IGMP Filtering Profile .........................................................................................................207
25.4 IPv6 Multicast Status ....................................................................................................................208
25.4.1 MLD Snooping-proxy ...........................................................................................................209
25.4.2 MLD Snooping-proxy VLAN ................................................................................................209
25.4.3 MLD Snooping-proxy VLAN Port Role Setting .................................................................... 211
25.4.4 MLD Snooping-proxy Filtering .............................................................................................213
25.4.5 MLD Snooping-proxy Filtering Profile ..................................................................................215
25.5 MVR Overview .............................................................................................................................216
25.5.1 Types of MVR Ports .............................................................................................................216
25.5.2 MVR Modes .........................................................................................................................216
25.5.3 How MVR Works .................................................................................................................216
25.6 General MVR Configuration ..........................................................................................................217
25.6.1 MVR Group Configuration ..................................................................................................219
25.6.2 MVR Configuration Example ...............................................................................................221
Chapter 26
AAA....................................................................................................................................................223
26.1 Authentication, Authorization and Accounting (AAA) ....................................................................223
26.1.1 Local User Accounts ............................................................................................................223
26.1.2 RADIUS and TACACS+ ......................................................................................................224
26.2 AAA Screens .................................................................................................................................224
26.2.1 RADIUS Server Setup .......................................................................................................224
26.2.2 TACACS+ Server Setup ..................................................................................................226
26.2.3 AAA Setup ...........................................................................................................................228
26.2.4 Vendor Specific Attribute .....................................................................................................231
26.2.5 Tunnel Protocol Attribute .....................................................................................................232
26.3 Supported RADIUS Attributes .......................................................................................................232
26.3.1 Attributes Used for Authentication .......................................................................................233
26.3.2 Attributes Used for Accounting ............................................................................................233
Chapter 27
IP Source Guard................................................................................................................................236
27.1 IP Source Guard Overview ...........................................................................................................236
27.1.1 DHCP Snooping Overview ..................................................................................................236
27.1.2 ARP Inspection Overview ....................................................................................................238
27.2 IP Source Guard ...........................................................................................................................240

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27.3 IP Source Guard Static Binding .....................................................................................................240
27.4 DHCP Snooping ............................................................................................................................242
27.5 DHCP Snooping Configure ...........................................................................................................245
27.5.1 DHCP Snooping Port Configure ..........................................................................................247
27.5.2 DHCP Snooping VLAN Configure .......................................................................................248
27.5.3 DHCP Snooping VLAN Port Configure ................................................................................249
27.6 ARP Inspection Status ..................................................................................................................250
27.6.1 ARP Inspection VLAN Status ..............................................................................................251
27.6.2 ARP Inspection Log Status ..................................................................................................252
27.6.3 ARP Inspection Configure ...................................................................................................253
27.6.4 ARP Inspection Port Configure ............................................................................................254
27.6.5 ARP Inspection VLAN Configure .........................................................................................255
Chapter 28
Loop Guard .......................................................................................................................................257
28.1 Loop Guard Overview ..................................................................................................................257
28.2 Loop Guard Setup .........................................................................................................................259
Chapter 29
VLAN Mapping ..................................................................................................................................260
29.1 VLAN Mapping Overview .............................................................................................................260
29.1.1 VLAN Mapping Example .....................................................................................................260
29.2 Enabling VLAN Mapping ...............................................................................................................260
29.3 Configuring VLAN Mapping ...........................................................................................................261
Chapter 30
Layer 2 Protocol Tunneling..............................................................................................................263
30.1 Layer 2 Protocol Tunneling Overview ..........................................................................................263
30.1.1 Layer-2 Protocol Tunneling Mode ........................................................................................264
30.2 Configuring Layer 2 Protocol Tunneling ........................................................................................264
Chapter 31
sFlow..................................................................................................................................................267
31.1 sFlow Overview .............................................................................................................................267
31.2 sFlow Port Configuration ...............................................................................................................267
31.2.1 sFlow Collector Configuration ..............................................................................................269
Chapter 32
PPPoE................................................................................................................................................271
32.1 PPPoE Intermediate Agent Overview ..........................................................................................271
32.1.1 PPPoE Intermediate Agent Tag Format ..............................................................................271
32.1.2 Sub-Option Format ..............................................................................................................271
32.1.3 Port State .............................................................................................................................272

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32.2 PPPoE Screen ..............................................................................................................................273
32.3 PPPoE Intermediate Agent ..........................................................................................................273
32.3.1 PPPoE IA Per-Port .............................................................................................................275
32.3.2 PPPoE IA Per-Port Per-VLAN ............................................................................................276
32.3.3 PPPoE IA for VLAN ............................................................................................................278
Chapter 33
Error Disable .....................................................................................................................................279
33.1 CPU Protection Overview .............................................................................................................279
33.2 Error-Disable Recovery Overview .................................................................................................279
33.3 Error Disable Screen .....................................................................................................................279
33.4 Error-Disable Status .....................................................................................................................280
33.5 CPU Protection Configuration ......................................................................................................281
33.6 Error-Disable Detect Configuration ..............................................................................................282
33.7 Error-Disable Recovery Configuration .........................................................................................283
Chapter 34
Private VLAN.....................................................................................................................................285
34.1 Private VLAN Overview ................................................................................................................285
34.2 Configuring Private VLAN .............................................................................................................285
Chapter 35
Green Ethernet..................................................................................................................................287
35.1 Green Ethernet Overview .............................................................................................................287
35.2 Configuring Green Ethernet ..........................................................................................................287
Chapter 36
Link Layer Discovery Protocol (LLDP)...........................................................................................289
36.1 LLDP Overview .............................................................................................................................289
36.2 LLDP-MED Overview ....................................................................................................................290
36.3 LLDP Screens ...............................................................................................................................291
36.4 LLDP Local Status ........................................................................................................................292
36.4.1 LLDP Local Port Status Detail ............................................................................................293
36.5 LLDP Remote Status ....................................................................................................................296
36.5.1 LLDP Remote Port Status Detail ........................................................................................297
36.6 LLDP Configuration ......................................................................................................................303
36.6.1 LLDP Configuration Basic TLV Setting ...............................................................................305
36.6.2 LLDP Configuration Org-specific TLV Setting .....................................................................306
36.7 LLDP-MED Configuration .............................................................................................................308
36.8 LLDP-MED Network Policy ..........................................................................................................309
36.9 LLDP-MED Location ....................................................................................................................310
Chapter 37
Static Route.......................................................................................................................................314

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37.1 Static Routing Overview ................................................................................................................314
37.2 Static Routing ................................................................................................................................314
37.3 IPv4 Static Route ..........................................................................................................................315
Chapter 38
Differentiated Services.....................................................................................................................317
38.1 DiffServ Overview ........................................................................................................................317
38.1.1 DSCP and Per-Hop Behavior ..............................................................................................317
38.1.2 DiffServ Network Example ..................................................................................................317
38.2 Activating DiffServ ........................................................................................................................318
38.3 DSCP-to-IEEE 802.1p Priority Settings ......................................................................................319
38.3.1 Configuring DSCP Settings .................................................................................................320
Chapter 39
DHCP..................................................................................................................................................321
39.1 DHCP Overview ...........................................................................................................................321
39.1.1 DHCP Modes ......................................................................................................................321
39.1.2 DHCP Configuration Options ...............................................................................................321
39.2 DHCP Configuration ......................................................................................................................321
39.3 DHCPv4 Status ............................................................................................................................322
39.4 DHCPv4 Relay .............................................................................................................................322
39.4.1 DHCPv4 Relay Agent Information .......................................................................................322
39.4.2 DHCPv4 Option 82 Profile ...................................................................................................323
39.4.3 Configuring DHCPv4 Global Relay ......................................................................................324
39.4.4 DHCPv4 Global Relay Port Configure ................................................................................325
39.4.5 Global DHCPv4 Relay Configuration Example ....................................................................326
39.4.6 Configuring DHCPv4 VLAN Settings ................................................................................327
39.4.7 DHCPv4 VLAN Port Configure ...........................................................................................328
39.4.8 Example: DHCPv4 Relay for Two VLANs ...........................................................................329
39.5 DHCPv6 Relay ..............................................................................................................................330
39.5.1 DHCPv6 Options Profile ......................................................................................................332
39.5.2 DHCPv6 Port Configure .....................................................................................................333
Chapter 40
ARP Setup .........................................................................................................................................335
40.1 ARP Overview ..............................................................................................................................335
40.2 ARP Setup ....................................................................................................................................337
40.2.1 ARP Learning .....................................................................................................................337
Chapter 41
Maintenance......................................................................................................................................339
41.1 The Maintenance Screen ............................................................................................................339
41.2 Load Factory Default ....................................................................................................................340

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41.3 Save Configuration ........................................................................................................................340
41.4 Reboot System ..............................................................................................................................340
41.5 Firmware Upgrade .....................................................................................................................342
41.6 Restore a Configuration File ......................................................................................................343
41.7 Backup a Configuration File .......................................................................................................343
41.8 Tech-Support ................................................................................................................................344
41.9 FTP Command Line ......................................................................................................................345
41.9.1 Filename Conventions ........................................................................................................346
41.9.2 FTP Command Line Procedure ..........................................................................................346
41.9.3 GUI-based FTP Clients ........................................................................................................347
41.9.4 FTP Restrictions .................................................................................................................347
Chapter 42
Access Control .................................................................................................................................348
42.1 Access Control Overview ..........................................................................................................348
42.2 The Access Control Main Screen ..................................................................................................348
42.3 About SNMP ...............................................................................................................................348
42.3.1 SNMP v3 and Security ........................................................................................................349
42.3.2 Supported MIBs ..................................................................................................................350
42.3.3 SNMP Traps ........................................................................................................................350
42.3.4 Configuring SNMP ..............................................................................................................355
42.3.5 Configuring SNMP Trap Group .........................................................................................357
42.3.6 Enabling/Disabling Sending of SNMP Traps on a Port ......................................................358
42.3.7 Configuring SNMP User ...................................................................................................359
42.4 Setting Up Login Accounts ........................................................................................................361
42.5 SSH Overview ...............................................................................................................................362
42.6 How SSH works ............................................................................................................................363
42.7 SSH Implementation on the Switch ...............................................................................................364
42.7.1 Requirements for Using SSH ...............................................................................................364
42.8 Introduction to HTTPS ...................................................................................................................364
42.9 HTTPS Example ...........................................................................................................................365
42.9.1 Internet Explorer Warning Messages ..................................................................................365
42.9.2 Mozilla Firefox Warning Messages ......................................................................................367
42.9.3 The Main Screen .................................................................................................................368
42.10 Service Port Access Control ....................................................................................................369
42.11 Remote Management .............................................................................................................370
Chapter 43
Diagnostic .........................................................................................................................................372
43.1 Diagnostic ....................................................................................................................................372
Chapter 44
Syslog................................................................................................................................................374

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44.1 Syslog Overview ...........................................................................................................................374
44.2 Syslog Setup ................................................................................................................................374
44.3 Syslog Server Setup ....................................................................................................................375
Chapter 45
Cluster Management ........................................................................................................................377
45.1 Cluster Management Status Overview .........................................................................................377
45.2 Cluster Management Status .........................................................................................................378
45.2.1 Cluster Member Switch Management ................................................................................379
45.3 Clustering Management Configuration ........................................................................................381
Chapter 46
MAC Table .........................................................................................................................................384
46.1 MAC Table Overview ....................................................................................................................384
46.2 Viewing the MAC Table ................................................................................................................385
Chapter 47
ARP Table..........................................................................................................................................387
47.1 ARP Table Overview ....................................................................................................................387
47.1.1 How ARP Works ..................................................................................................................387
47.2 The ARP Table Screen .................................................................................................................387
Chapter 48
Path MTU Table.................................................................................................................................389
48.1 Path MTU Overview ....................................................................................................................389
48.2 Viewing the Path MTU Table .........................................................................................................389
Chapter 49
Configure Clone................................................................................................................................390
49.1 Configure Clone ...........................................................................................................................390
Chapter 50
Neighbor Table..................................................................................................................................393
50.1 IPv6 Neighbor Table Overview .....................................................................................................393
50.2 Viewing the IPv6 Neighbor Table ..................................................................................................393
Chapter 51
Troubleshooting................................................................................................................................395
51.1 Power, Hardware Connections, and LEDs ....................................................................................395
51.2 Switch Access and Login ..............................................................................................................396
51.3 Switch Configuration .....................................................................................................................398
Appendix A Customer Support ........................................................................................................399

Table of Contents
MGS3520 Series User’s Guide
17
Appendix B Common Services ........................................................................................................405
Appendix C IPv6 ..............................................................................................................................409
Appendix D Legal Information .........................................................................................................417
Index ..................................................................................................................................................422

18
PART I
User’s Guide

MGS3520 Series User’s Guide
19
CHAPTER 1
Getting to Know Your Switch
This chapter introduces the main features and applications of the Switch.
1.1 Introduction
The Switch is a layer-2 standalone Ethernet switch. The Switch has two or four GbE dual personality
interfaces with each interface comprising one mini-GBIC slot and one 100/1000 Mbps RJ-45 port,
with either port or slot active at a time.
This User’s Guide covers the following models: MGS3520-28, MGS3520-28F and MGS3520-50.
With its built-in web configurator, managing and configuring the Switch is easy. In addition, the
Switch can also be managed via Telnet, any terminal emulator program on the console port, or
third-party SNMP management.
This section shows a few examples of using the Switch in various network environments.
1.1.1 Backbone Application
The Switch is an ideal solution for small networks where rapid growth can be expected in the near
future. The Switch can be used standalone for a group of heavy traffic users. You can connect
computers and servers directly to the Switch’s port or connect other switches to the Switch.
In this example, all computers can share high-speed applications on the server. To expand the
network, simply add more networking devices such as switches, routers, computers, print servers
etc.
Table 1 Switch Comparison Table
PORT/SWITCH DETAILS MG3520-28 MGS3520-28F MGS3520-50
24 10/100/1000Base-T Ethernet ports
44 10/100/1000Base-T Ethernet ports
2 100BASE-FX/1000BASE-X SFP Slots
24 100BASE-FX/1000BASE-X SFP Slots
4 Dual Personality Interfaces

Chapter 1 Getting to Know Your Switch
MGS3520 Series User’s Guide
20
Figure 1 Backbone Application
1.1.2 Bridging Example
In this example, the Switch connects different company departments (RD and Sales) to the
corporate backbone. It can alleviate bandwidth contention and eliminate server and network
bottlenecks. All users that need high bandwidth can connect to high-speed department servers via
the Switch. You can provide a super-fast uplink connection by using a Gigabit Ethernet/mini-GBIC
port on the Switch.
Moreover, the Switch eases supervision and maintenance by allowing network managers to
centralize multiple servers at a single location.
Figure 2 Bridging Application
1.1.3 High Performance Switching Example
The Switch is ideal for connecting two networks that need high bandwidth. In the following
example, use trunking to connect these two networks.
Switching to higher-speed LANs such as ATM (Asynchronous Transmission Mode) is not feasible for
most people due to the expense of replacing all existing Ethernet cables and adapter cards,
restructuring your network and complex maintenance. The Switch can provide the same bandwidth