SNSL makes no representations or warranties, either expressed or implied, with respect to
the contents hereof and specifically disclaims any warranties, merchantability or fitness for
any particular purpose. Any software described in this manual is sold or licensed “as is”.
Should the programs prove defective following their purchase, the buyer (and not SNSL, its
distributor, or its dealer) assumes the entire cost of all necessary servicing, repair, and any
incidental or consequential damages resulting from any defect in the software. Further,
SNSL reserves the right to revise this publication and to make changes from time to time in
the contents thereof without obligation to notify any person of such revision or changes.
SNSL an abbreviation of Smartlink Network Systems Ltd.
Layer 2 Switch
with 24 10/100/1000BASE-T (RJ-45) Ports,
and 4 Gigabit Combination Ports (RJ-45/SFP)
DG-GS4528S
E112010-CS-R01
149100000109A
ABOUT THIS GUIDE
PURPOSE This guide gives specific information on how to operate and use the
management functions of the switch.
AUDIENCE The guide is intended for use by network administrators who are
responsible for operating and maintaining network equipment;
consequently, it assumes a basic working knowledge of general switch
functions, the Internet Protocol (IP), and Simple Network Management
Protocol (SNMP).
CONVENTIONS The following conventions are used throughout this guide to show
information:
N
OTE
:
Emphasizes important information or calls your attention to related
features or instructions.
C
AUTION
damage the system or equipment.
W
ARNING
:
Alerts you to a potential hazard that could cause loss of data, or
:
Alerts you to a potential hazard that could cause personal injury.
RELATED PUBLICATIONS The following publication details the hardware features of the switch,
including the physical and performance-related characteristics, and how to
install the switch:
The Installation Guide
Also, as part of the switch’s software, there is an online web-based help
that describes all management related features.
REVISION HISTORY This section summarizes the changes in each revision of this guide.
NOVEMBER 2010 REVISION
This is the first version of this guide. This guide is valid for software release
v1.1.0.3.
– 5 –
A
BOUT THIS GUIDE
– 6 –
CONTENTS
ABOUT THIS GUIDE 5
C
ONTENTS 7
F
IGURES 23
T
ABLES 27
SECTION IGETTING STARTED 29
1INTRODUCTION 31
Key Features 31
Description of Software Features 32
Configuration Backup and Restore 32
Authentication 32
Access Control Lists 33
Port Configuration 33
Rate Limiting 33
Port Mirroring 33
Port Trunking 33
Storm Control 33
Static Addresses 33
IEEE 802.1D Bridge 34
Store-and-Forward Switching 34
Spanning Tree Algorithm 34
Virtual LANs 35
Traffic Prioritization 35
Quality of Service 35
Multicast Filtering 35
System Defaults 36
2INITIAL SWITCH CONFIGURATION 39
Connecting to the Switch 39
– 7 –
C
ONTENTS
Configuration Options 39
Required Connections 40
Remote Connections 41
Logging into the CLI 41
Basic Configuration 42
Setting Passwords 42
Setting an IP Address 42
Manual Configuration 43
Dynamic Configuration 45
Enabling SNMP Management Access 46
Community Strings (for SNMP version 1 and 2c clients) 46
Trap Receivers 47
Configuring Access for SNMP Version 3 Clients 48
Managing System Files 49
Saving or Restoring Configuration Settings 49
SECTION IIWEB CONFIGURATION 51
3USINGTHE WEB INTERFACE 53
Connecting to the Web Interface 53
Navigating the Web Browser Interface 54
Home Page 54
Configuration Options 54
Panel Display 55
Main Menu 55
4CONFIGURINGTHE SWITCH 61
Configuring System Information 61
Setting an IP Address 62
Setting an IPv4 Address 62
Setting an IPv6 Address 64
Configuring NTP Service 66
Configuring Port Connections 67
Configuring Security 70
Configuring User Accounts 70
Configuring User Privilege Levels 72
Configuring The Authentication Method For Management Access 74
– 8 –
C
ONTENTS
Configuring SSH 77
Configuring HTTPS 78
Filtering IP Addresses for Management Access 79
Using Simple Network Management Protocol 81
Configuring SNMP System and Trap Settings 82
Setting SNMPv3 Community Access Strings 86
Configuring SNMPv3 Users 87
Configuring SNMPv3 Groups 88
Configuring SNMPv3 Views 90
Configuring SNMPv3 Group Access Rights 91
Configuring Port Limit Controls 92
Configuring Authentication Through Network Access Servers 94
Filtering Traffic with Access Control Lists 105
Assigning ACL Policies and Responses 105
Configuring Rate Limiters 107
Configuring Access Control Lists 108
Configuring DHCP Snooping 115
Configuring DHCP Relay and Option 82 Information 118
Configuring IP Source Guard 119
Configuring Global and Port Settings for IP Source Guard 119
Configuring Static Bindings for IP Source Guard 121
Configuring ARP Inspection 123
Configuring Global and Port Settings for ARP Inspection 124
Configuring Static Bindings for ARP Inspection 125
Specifying Authentication Servers 126
Creating Trunk Groups 128
Configuring Static Trunks 129
Configuring LACP 132
Configuring the Spanning Tree Algorithm 135
Configuring Global Settings for STA 137
Configuring Multiple Spanning Trees 140
Configuring Spanning Tree Bridge Priorities 142
Configuring
STP/RSTP/CIST Interfaces 143
Configuring MIST Interfaces 147
IGMP Snooping 149
Configuring Global and Port-Related Settings for IGMP Snooping 149
– 9 –
C
ONTENTS
Configuring VLAN Settings for IGMP Snooping and Query 152
Configuring IGMP Filtering 153
MLD Snooping 154
Configuring Global and Port-Related Settings for MLD Snooping 155
Configuring VLAN Settings for MLD Snooping and Query 158
Configuring MLD Filtering 159
Multicast VLAN Registration 160
Link Layer Discovery Protocol 163
Configuring LLDP Timing and TLVs 163
Configuring LLDP-MED TLVs 166
Configuring the MAC Address Table 172
IEEE 802.1Q VLANs 174
Assigning Ports to VLANs 175
Configuring VLAN Attributes for Port Members 176
Configuring Private VLANs 178
Using Port Isolation 180
Managing VoIP Traffic 181
Configuring VoIP Traffic 181
Configuring Telephony OUI 183
Quality of Service 185
Configuring Port-Level Queue Settings 185
Configuring DSCP Remarking 187
Configuring QoS Control Lists 189
Configuring Rate Limiting 191
Configuring Storm Control 193
Configuring Port Mirroring 194
Configuring UPnP 195
5MONITORINGTHE SWITCH 197
Displaying Basic Information About the System 197
Displaying System Information 197
Displaying CPU Utilization 198
Displaying Log Messages 199
Displaying Log Details 200
Displaying Information About Ports 201
Displaying Port Status On the Front Panel 201
Displaying an Overview of Port Statistics 201
– 10 –
C
ONTENTS
Displaying QoS Statistics 202
Displaying Detailed Port Statistics 203
Displaying Information About Security Settings 205
Displaying Access Management Statistics 205
Displaying Information About Switch Settings for Port Security 206
Displaying Information About Learned MAC Addresses 208
Displaying Port Status for Authentication Services 209
Displaying Port Statistics for 802.1X or Remote Authentication Service
210
Displaying ACL Status 214
Displaying Statistics for DHCP Snooping 215
Displaying DHCP Relay Statistics 217
Displaying MAC Address Bindings for ARP Packets 219
Displaying Entries in the IP Source Guard Table 219
Displaying Information on Authentication Servers 220
Displaying a List of Authentication Servers 220
Displaying Statistics for Configured Authentication Servers 221
Figure 60: Configuring Global and Port Settings for a Voice VLAN183
Figure 61: Configuring an OUI Telephony List184
Figure 62: Port QoS Configuration187
Figure 63: DSCP Remarking Configuration188
Figure 64: QoS Control List Configuration191
Figure 65: Rate Limit Configuration192
Figure 66: Storm Control Configuration194
Figure 67: Mirror Configuration195
– 24 –
F
IGURES
Figure 68: UPnP Configuration196
Figure 69: System Information198
Figure 70: Displaying CPU Utilization199
Figure 71: System Log Information200
Figure 72: Detailed System Log Information200
Figure 73: Port State Overview201
Figure 74: Port Statistics Overview202
Figure 75: Queuing Counters203
Figure 76: Detailed Port Statistics205
Figure 77: Access Management Statistics206
Figure 78: Port Security Switch Status208
Figure 79: Port Security Port Status209
Figure 80: Network Access Server Switch Status210
Figure 81: NAS Statistics for Specified Port214
Figure 82: ACL Status215
Figure 83: DHCP Snooping Statistics217
Figure 84: DHCP Relay Statistics218
Figure 85: Dynamic ARP Inspection Table219
Figure 86: Dynamic IP Source Guard Table219
Figure 87: RADIUS Overview221
Figure 88: RADIUS Details224
Figure 89: LACP System Status225
Figure 90: LACP Port Status226
Figure 91: LACP Port Statistics227
Figure 92: Spanning Tree Bridge Status230
Figure 93: Spanning Tree Port Status231
Figure 94: Spanning Tree Port Statistics232
Figure 95: IGMP Snooping Status233
Figure 96: MLD Snooping Status235
Figure 97: MLD Snooping Group Information235
Figure 98: MVR Status236
Figure 99: LLDP Neighbor Information238
Figure 100: LLDP-MED Neighbor Information240
Figure 101: LLDP Port Statistics242
Figure 102: MAC Address Table243
Figure 103: Showing VLAN Members244
– 25 –
F
IGURES
Figure 104: Showing VLAN Port Status246
Figure 105: ICMP Ping248
Figure 106: VeriPHY Cable Diagnostics249
Figure 107: Restart Device251
Figure 108: Factory Defaults252
Figure 109: Software Upload253
Figure 110: Configuration Save254
Figure 111: Configuration Upload254
– 26 –
TABLES
Table 1: Key Features 31
Table 2: System Defaults 36
Table 3: Web Page Configuration Buttons 54
Table 4: Main Menu 55
Table 5: HTTPS System Support 78
Table 6: SNMP Security Models and Levels 81
Table 7: Dynamic QoS Profiles 98
Table 8: QCE Modification Buttons 109
Table 9: Recommended STA Path Cost Range 144
Table 10: Recommended STA Path Costs 144
Table 11: Default STA Path Costs 145
Table 12: QCE Modification Buttons 189
Table 13: Mapping CoS Values to Egress Queues 190
Table 14: System Capabilities 237
Table 15: Keystroke Commands 262
Table 16: Command Group Index 263
Table 17: System Commands 265
Table 18: IP Commands 271
Table 19: Port Commands 283
Table 20: Port Configuration 283
Table 21: MAC Commands 293
Table 22: VLAN Commands 299
Table 23: PVLAN Commands 307
Table 24: Security Commands 311
Table 25: User Access Commands 312
Table 26: Privilege Level Commands 313
Table 27: Protocol Authentication Commands 316
Table 28: SSH Commands 318
Table 29: HTTPS Commands 319
Table 30: HTTPS System Support 321
Table 31: Management Access Commands 322
– 27 –
T
ABLES
Table 32: SNMP Commands 326
Table 33: Port Security Status Commands 348
Table 34: Port Security Limit Control Commands 349
Table 35: NAS Commands 354
Table 36: ACL Commands 367
Table 37: DHCP Relay Commands 375
Table 38: DHCP Snooping Commands 379
Table 39: IP Source Guard Commands 382
Table 40: ARP Inspection Commands 387
Table 41: AAA Commands 390
Table 42: STP Commands 399
Table 43: Recommended STA Path Cost Range 416
Table 44: Recommended STA Path Costs 416
Table 45: Default STA Path Costs 416
Table 46: IGMP Commands 419
Table 47: IGMP Configuration 420
Table 48: Link Aggregation Commands 429
Table 49: LACP Commands 435
Table 50: LLDP Commands 441
Table 51: LLDP-MED Commands 449
Table 52: QoS Commands 459
Table 53: Mapping CoS Values to Egress Queues 462
Table 54: Mirror Commands 471
Table 55: Configuration Commands 473
Table 56: Firmware Commands 475
Table 57: UPnP Commands 479
Table 58: MVR Commands 483
Table 59: Voice VLAN Commands 489
Table 60: MLD Snooping Commands 497
Table 61: MLD Snooping Configuration 498
Table 62: Troubleshooting Chart 513
– 28 –
S
ECTION
GETTING STARTED
This section provides an overview of the switch, and introduces some basic
concepts about network switches. It also describes the basic settings
required to access the management interface.
This section includes these chapters:
◆ "Introduction" on page 31
◆ "Initial Switch Configuration" on page 39
I
– 29 –
S
ECTION
I
| Getting Started
– 30 –
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