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ES-2108
ZyXEL Communications ES-2108 User Manual
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ES-2108 Series
Ethernet Switch
User
’
s Guide
Ve
r
s
i
o
n
3
.
8
10/2007
Edition 2
DEFAULT LOGIN
IP Address
http://1
92
.168.1.1
User Name
admin
Password
1234
2
Table of Contents
Contents Overview
9
About this User's Guide
3
Document Conventions
4
Safety Warnings
6
Table of Contents
9
Table of Contents
11
List of Figures
21
Default Chapter
25
List of Tables
25
Introduction
29
PART I Introduction
29
Chapter 1 Getting to Know Your Switch
31
Introduction
31
Backbone Application
31
Table 1 Model Specific Features
31
Bridging Example
32
Figure 1 Backbone Application
32
Figure 2 Bridging Application
32
High Performance Switched Example
33
IEEE 802.1Q VLAN Application Examples
33
Figure 3 High Performance Switched Application
33
Figure 4 Tag-Based VLAN Application
34
Figure 5 Shared Server Using VLAN Example
34
Ways to Manage the Switch
34
Good Habits for Managing the Switch
35
Chapter 2 Hardware Installation and Connection
37
Figure 6 Attaching Rubber Feet
37
Freestanding Installation
37
Mounting the Switch on a Rack
38
Rack-Mounted Installation Requirements
38
Attaching the Mounting Brackets to the Switch
38
Figure 7 Attaching the Mounting Brackets
38
Mounting the Switch on a Rack
39
Figure 8 Mounting the Switch on a Rack
39
Wall-Mounting Installation
39
Figure 9 Wall-Mounting Example
40
Chapter 3 Hardware Overview
41
Front Panel Connection
41
Figure 10 Front Panel: ES-2108
41
Figure 11 Front Panel: ES-2108-F
41
Figure 12 Front Panel: ES-2108-G/ES-2108PWR
42
Figure 13 Front Panel: ES-2108-LC
42
Table 2 Front Panel
42
Console Port
43
Ethernet Ports
43
Fast Ethernet SFP Slot
44
Mini-GBIC Slot
44
Base-FX Fiber-Optic Port
45
Figure 14 Transceiver Installation Example
45
Figure 15 Installed Transceiver
45
Figure 16 Opening the Transceiver's Latch Example
45
Figure 17 Transceiver Removal Example
45
Rear Panel
46
Power Connections
46
Figure 18 Rear Panel (AC Model)
46
Figure 19 Rear Panel (DC Model)
46
Leds
47
Table 3 Leds
47
Hardware Overview
41
Basic Configuration
49
Part II: Basic Configuration
49
Chapter 4 The Web Configurator
51
Introduction
51
System Login
51
Figure 20 Web Configurator: Login
52
Figure 21 Web Configurator Home Screen (Status)
52
The Status Screen
52
Table 4 Navigation Panel Sub-Links Overview
53
Table 5 Web Configurator Screen Sub-Links Details
54
Table 6 Navigation Panel Links
55
Change Your Password
56
Figure 22 Management > Access Control > Logins
57
Saving Your Configuration
57
Switch Lockout
57
Resetting the Switch
58
Reload the Factory-Default Configuration File
58
Figure 23 Resetting the Switch: Via the Console Port (ES-2108-G)
59
Figure 24 Web Configurator: Logout Screen
59
Help
59
Logging out of the Web Configurator
59
Chapter 5 Initial Setup Example
61
Overview
61
Creating a VLAN
61
Figure 25 Initial Setup Network Example: VLAN
61
Setting Port VID
63
Configuring the Management IP Address
63
Figure 26 Initial Setup Network Example: Port VID
63
Figure 27 Initial Setup Example: Management IP Address
64
Chapter 6 System Status and Port Statistics
65
Figure 28 Status (ES-2108PWR)
65
Status: Port Details
66
Figure 29 Status (ES-2108-G)
66
Table 7 Status
66
Figure 30 Status: Port Details (ES-2108PWR)
67
Figure 31 Status: Port Details (ES-2108-G)
68
Table 8 Status: Port Details
68
Port Status Overview
65
Basic Setting
71
Chapter 7 Basic Setting
71
Overview
71
System Information
71
Figure 32 Basic Setting > System Info (ES-2108PWR)
72
Figure 33 Basic Setting > System Info (ES-2108-G)
72
Table 9 Basic Setting > System Info
72
General Setup
73
Figure 34 Basic Setting > General Setup
74
Table 10 Basic Setting > General Setup
74
Introduction to Vlans
75
Switch Setup Screen
76
Figure 35 Basic Setting > Switch Setup
76
Table 11 Basic Setting > Switch Setup
77
IP Setup
78
Management IP Addresses
78
Figure 36 Basic Setting > IP Setup
79
Table 12 Basic Setting > IP Setup
79
Port Setup
80
Figure 37 Basic Setting > Port Setup (ES-2108PWR)
81
Figure 38 Basic Setting > Port Setup (ES-2108-G)
82
Table 13 Basic Setting > Port Setup
82
Advanced Setup
85
Part III: Advanced Setup
85
Vlan
87
Chapter 8 VLAN
87
Introduction to IEEE 802.1Q Tagged VLAN
87
Forwarding Tagged and Untagged Frames
87
Automatic VLAN Registration
88
Garp
88
Gvrp
88
Table 14 IEEE 802.1Q Terminology
88
Port VLAN Trunking
89
Select the VLAN Type
89
Static VLAN
89
Figure 39 Port VLAN Trunking
89
Figure 40 Switch Setup: Select VLAN Type
89
Static VLAN Status
90
Static VLAN Details
90
Figure 41 Advanced Application > VLAN: VLAN Status
90
Figure 42 Advanced Application > VLAN > VLAN Detail
90
Table 15 Advanced Application > VLAN: VLAN Status
90
Configure a Static VLAN
91
Figure 43 Advanced Application > VLAN > Static VLAN
91
Table 16 Advanced Application > VLAN > VLAN Details
91
Configure VLAN Port Settings
92
Table 17 Advanced Application > VLAN > Static VLAN
92
Figure 44 Advanced Application > VLAN > VLAN Port Setting
93
Table 18 Advanced Application > VLAN > VLAN Port Setting
93
Port Based VLAN Setup
94
Configure a Port-Based VLAN
94
Figure 45 Advanced Application > VLAN: Port Based VLAN Setup (All Connected)
95
Figure 46 Advanced Application > VLAN: Port Based VLAN Setup (Port Isolation)
95
Table 19 Advanced Application > VLAN: Port Based VLAN Setup
96
Chapter 9 Static MAC Forwarding
97
Configuring Static MAC Forwarding
97
Overview
97
Figure 47 Advanced Application > Static MAC Forwarding
98
Table 20 Advanced Application > Static MAC Forwarding
98
Chapter 10 Filtering
99
Configure a Filtering Rule
99
Figure 48 Advanced Application > Filtering
99
Table 21 Advanced Application > Filtering
99
Chapter 11 Spanning Tree Protocol
101
STP/RSTP Overview
101
STP Terminology
101
How STP Works
102
Table 22 STP Path Costs
102
STP Port States
103
Multiple STP
103
Table 23 STP Port States
103
Figure 49 STP/RSTP Network Example
104
Figure 50 MSTP Network Example
104
Figure 51 Mstis in Different Regions
105
Figure 52 MSTP and Legacy RSTP Network Example
105
Spanning Tree Protocol Status Screen
106
Spanning Tree Configuration
106
Figure 53 Advanced Application > Spanning Tree Protocol
106
Figure 54 Advanced Application > Spanning Tree Protocol > Configuration
106
Table 24 Advanced Application > Spanning Tree Protocol > Configuration
106
Configure Rapid Spanning Tree Protocol
107
Figure 55 Advanced Application > Spanning Tree Protocol > RSTP
107
Table 25 Advanced Application > Spanning Tree Protocol > RSTP
107
Rapid Spanning Tree Protocol Status
108
Configure Multiple Spanning Tree Protocol
109
Figure 56 Advanced Application > Spanning Tree Protocol: Status, RSTP
109
Table 26 Advanced Application > Spanning Tree Protocol: Status, RSTP
109
Figure 57 Advanced Application > Spanning Tree Protocol > MSTP
110
Table 27 Advanced Application > Spanning Tree Protocol > MSTP
111
Multiple Spanning Tree Protocol Status
112
Figure 58 Advanced Application > Spanning Tree Protocol: Status, MSTP
113
Table 28 Advanced Application > Spanning Tree Protocol: Status, MSTP
113
Bandwidth Control
115
Filtering
99
Chapter 12 Bandwidth Control
115
Bandwidth Control Setup
115
Figure 59 Advanced Application > Bandwidth Control
115
Table 29 Advanced Application > Bandwidth Control
115
Chapter 13 Broadcast Storm Control
117
Broadcast Storm Control Setup
117
Figure 60 Advanced Application > Broadcast Storm Control
117
Table 30 Advanced Application > Broadcast Storm Control
117
Mirroring
119
Chapter 14 Mirroring
119
Port Mirroring Setup
119
Figure 61 Advanced Application > Mirroring
119
Table 31 Advanced Application > Mirroring
119
Link Aggregation
121
Chapter 15 Link Aggregation
121
Link Aggregation Overview
121
Dynamic Link Aggregation
121
Link Aggregation ID
122
Link Aggregation Control Protocol Status
122
Figure 62 Advanced Application > Link Aggregation: Status
122
Table 32 Link Aggregation ID: Local Switch
122
Table 33 Link Aggregation ID: Peer Switch
122
Table 34 Advanced Application > Link Aggregation: Status
122
Link Aggregation Setup
123
Figure 63 Advanced Application > Link Aggregation > Link Aggregation Setting
123
Table 35 Advanced Application > Link Aggregation > Link Aggregation Setting
123
Link Aggregation Control Protocol
124
Figure 64 Advanced Application > Link Aggregation > Link Aggregation Setting > LACP
124
Table 36 Advanced Application > Link Aggregation > Link Aggregation Setting > LACP
124
Static Trunking Example
125
Figure 65 Trunking Example - Physical Connections
125
Figure 66 Trunking Example - Configuration Screen
126
Port Authentication
127
Chapter 16 Port Authentication
127
Port Authentication Overview
127
IEEE 802.1X Authentication
127
Port Authentication Configuration
128
Activate IEEE 802.1X Security
128
Figure 67 IEEE 802.1X Authentication Process
128
Figure 68 Advanced Application > Port Authentication
128
Figure 69 Advanced Application > Port Authentication > 802.1X
129
Table 37 Advanced Application > Port Authentication > 802.1X
129
Port Security
131
Chapter 17 Port Security
131
Port Security Overview
131
Port Security Setup
131
Figure 70 Advanced Application > Port Security
132
Table 38 Advanced Application > Port Security
132
Port Security Example
133
Figure 71 Port Security Example
133
Table 39 Port Security Example
134
Queuing Method
135
Chapter 18 Queuing Method
135
Queuing Method Overview
135
Strict Priority Queuing (SPQ)
135
Weighted Round Robin Scheduling (WRR)
135
Table 40 Physical Queue Priority
135
Configuring Queuing Method
136
Figure 72 Advanced Application > Queuing Method
136
Table 41 Advanced Application > Queuing Method
136
Multicast
137
Chapter 19 Multicast
137
Multicast Overview
137
IP Multicast Addresses
137
IGMP Filtering
137
IGMP Snooping
137
IGMP Snooping and Vlans
138
Multicast Status
138
Multicast Setting
138
Figure 73 Advanced Application > Multicast: Status
138
Table 42 Advanced Application > Multicast: Status
138
Figure 74 Advanced Application > Multicast > Multicast Setting
139
Table 43 Advanced Application > Multicast > Multicast Setting
139
IGMP Snooping VLAN
140
Figure 75 Advanced Application > Multicast > Multicast Setting > IGMP Snooping VLAN
141
Table 44 Advanced Application > Multicast > Multicast Setting > IGMP Snooping VLAN
141
IGMP Filtering Profile
142
Figure 76 Advanced Application > Multicast > Multicast Setting> IGMP Filtering Profile
142
Table 45 Advanced Application > Multicast > Multicast Setting> IGMP Filtering Profile
142
MVR Overview
143
Figure 77 MVR Network Example
143
Types of MVR Ports
144
MVR Modes
144
How MVR Works
144
Figure 78 MVR Multicast Television Example
144
General MVR Configuration
145
Figure 79 Advanced Application > Multicast > Multicast Setting > MVR
145
Table 46 Advanced Application > Multicast > Multicast Setting > MVR
145
MVR Group Configuration
146
Figure 80 Advanced Application > Multicast > Multicast Setting > MVR > Group Configuration
147
Table 47 Advanced Application > Multicast > Multicast Setting > MVR >Group Configuration
147
MVR Configuration Example
148
Figure 81 MVR Configuration Example
148
Figure 82 MVR Configuration Example
149
Figure 83 MVR Group Configuration Example
149
Figure 84 MVR Group Configuration Example
150
Chapter 20 Authentication & Accounting
151
Authentication, Authorization and Accounting
151
Local User Accounts
151
Figure 85 AAA Server
151
RADIUS and TACACS
152
Authentication and Accounting Screens
152
RADIUS Server Setup
152
Figure 86 Advanced Application > Auth and Acct
152
Table 48 RADIUS Vs TACACS
152
Figure 87 Advanced Application > Auth and Acct > RADIUS Server Setup
153
Table 49 Advanced Application > Auth and Acct > RADIUS Server Setup
153
TACACS+ Server Setup
154
Figure 88 Advanced Application > Auth and Acct > TACACS+ Server Setup
155
Table 50 Advanced Application > Auth and Acct > TACACS+ Server Setup
155
Authentication and Accounting Setup
156
Figure 89 Advanced Application > Auth and Acct > Auth and Acct Setup
157
Table 51 Advanced Application > Auth and Acct > Auth and Acct Setup
157
Vendor Specific Attribute
159
Table 52 Supported Vsas
159
Supported RADIUS Attributes
160
Table 53 Supported Tunnel Protocol Attribute
160
Attributes Used for Authentication
161
Attributes Used for Accounting
161
Table 54 RADIUS Attributes - Exec Events Via Console
162
Table 55 RADIUS Attributes - Exec Events Via Telnet/Ssh
162
Table 56 RADIUS Attributes - Exec Events Via Console
162
Chapter 21 IP Source Guard
165
IP Source Guard Overview
165
ARP Inspection Overview
165
Figure 90 Example: Man-In-The-Middle Attack
165
IP Source Guard
167
IP Source Guard Static Binding
167
Figure 91 Advanced Application > IP Source Guard
167
Table 57 Advanced Application > IP Source Guard
167
Figure 92 Advanced Application > IP Source Guard > Static Binding
168
Table 58 Advanced Application > IP Source Guard > Static Binding
168
ARP Inspection Status
169
ARP Inspection Log Status
169
Figure 93 Advanced Application > IP Source Guard > ARP Inspection: Status
169
Table 59 Advanced Application > IP Source Guard > ARP Inspection: Status
169
ARP Inspection Configure
170
Figure 94 Advanced Application > IP Source Guard > ARP Inspection > Log Status
170
Table 60 Advanced Application > IP Source Guard > ARP Inspection > Log Status
170
Figure 95 Advanced Application > IP Source Guard > ARP Inspection > Configure
171
Table 61 Advanced Application > IP Source Guard > ARP Inspection > Configure
171
ARP Inspection Port Configure
172
Figure 96 Advanced Application > IP Source Guard > ARP Inspection > Configure > Port
172
ARP Inspection VLAN Configure
173
Figure 97 Advanced Application > IP Source Guard > ARP Inspection > Configure > VLAN
173
Table 62 Advanced Application > IP Source Guard > ARP Inspection > Configure > Port
173
Table 63 Advanced Application > IP Source Guard > ARP Inspection > Configure > VLAN
173
Loop Guard
175
IP Source Guard
165
Chapter 22 Loop Guard
175
Loop Guard Overview
175
Figure 98 Loop Guard Vs STP
175
Figure 99 Switch in Loop State
176
Figure 100 Loop Guard - Probe Packet
176
Figure 101 Loop Guard - Network Loop
176
Loop Guard Setup
177
Figure 102 Advanced Application > Loop Guard
177
Table 64 Advanced Application > Loop Guard
177
IP Application
179
Part IV: IP Application
179
Static Route
181
Chapter 23 Static Route
181
Static Routing Overview
181
Configuring Static Routing
181
Figure 103 Static Routing Overview
181
Figure 104 IP Application > Static Routing
182
Table 65 IP Application > Static Routing
182
Chapter 24 Differentiated Services
185
Diffserv Overview
185
DSCP and Per-Hop Behavior
185
Diffserv Network Example
185
Figure 105 Diffserv: Differentiated Service Field
185
Activating Diffserv
186
Figure 106 Diffserv Network Example
186
Figure 107 IP Application > Diffserv
186
Table 66 IP Application > Diffserv
186
DSCP-To-Ieee802.1P Priority Mapping Settings
187
Configuring DSCP Settings
187
Figure 108 IP Application > Diffserv > DSCP Setting
187
Table 67 Default DSCP-Ieee802.1P Mapping
187
Table 68 IP Application > Diffserv > DSCP Setting
188
Dhcp
189
Chapter 25 DHCP
189
DHCP Overview
189
DHCP Modes
189
DHCP Configuration Options
189
DHCP Status
189
DHCP Relay
190
DHCP Relay Agent Information
190
Figure 109 IP Application > DHCP
190
Table 69 IP Application > DHCP
190
Table 70 Relay Agent Information
190
Configuring DHCP Global Relay
191
Figure 110 IP Application > DHCP > Global
191
Table 71 IP Application > DHCP > Global
191
Global DHCP Relay Configuration Example
192
Configuring DHCP VLAN Settings
192
Figure 111 Global DHCP Relay Network Example
192
Figure 112 DHCP Relay Configuration Example
192
Figure 113 IP Application > DHCP > VLAN
193
Table 72 IP Application > DHCP > VLAN
193
Example: DHCP Relay for Two Vlans
194
Figure 114 DHCP Relay for Two Vlans
194
Figure 115 DHCP Relay for Two Vlans Configuration Example
194
Management
195
Part V: Management
195
Maintenance
197
Chapter 26 Maintenance
197
The Maintenance Screen
197
Figure 116 Management > Maintenance
197
Table 73 Management > Maintenance
197
Load Factory Default
198
Save Configuration
198
Figure 117 Load Factory Default: Confirmation
198
Reboot System
199
Firmware Upgrade
199
Restore a Configuration File
199
Figure 118 Management > Maintenance > Firmware Upgrade
199
Backup Configuration File
200
FTP Command Line
200
Figure 119 Management > Maintenance > Restore Configuration
200
Figure 120 Management > Maintenance > Backup Configuration
200
Filename Conventions
201
FTP Command Line Procedure
201
Table 74 Filename Conventions
201
GUI-Based FTP Clients
202
FTP Restrictions
202
Table 75 General Commands for GUI-Based FTP Clients
202
Access Control
203
Chapter 27 Access Control
203
Access Control Overview
203
The Access Control Main Screen
203
Figure 121 Access Control
203
Table 76 Access Control Overview
203
About SNMP
204
Figure 122 SNMP Management Model
204
Table 77 SNMP Commands
204
SNMP V3 and Security
205
Supported Mibs
205
SNMP Traps
205
Table 78 Private MIB OID Starting Numbers
205
Table 79 SNMP System Traps
205
Table 80 SNMP Interface Traps
206
Table 81 AAA Traps
207
Table 82 SNMP IP Traps
207
Configuring SNMP
208
Table 83 SNMP Switch Traps
208
Figure 123 Management > Access Control > SNMP
209
Table 84 Management > Access Control > SNMP
209
Configuring SNMP Trap Group
210
Setting up Login Accounts
211
Figure 124 Management > Access Control > SNMP > Trap Group
211
Table 85 Management > Access Control > SNMP > Trap Group
211
Figure 125 Management > Access Control > Logins
212
Table 86 Management > Access Control > Logins
212
SSH Overview
213
How SSH Works
213
Figure 126 SSH Communication Example
213
SSH Implementation on the Switch
214
Requirements for Using SSH
214
Figure 127 How SSH Works
214
SSH Login Example
215
Introduction to HTTPS
215
Figure 128 SSH Login Example
215
HTTPS Example
216
Internet Explorer Warning Messages
216
Figure 129 HTTPS Implementation
216
Netscape Navigator Warning Messages
217
Figure 130 Security Alert Dialog Box (Internet Explorer)
217
Figure 131 Security Certificate 1 (Netscape)
217
The Main Screen
218
Service Port Access Control
218
Figure 132 Security Certificate 2 (Netscape)
218
Figure 133 Example: Lock Denoting a Secure Connection
218
Remote Management
219
Figure 134 Management > Access Control > Service Access Control
219
Table 87 Management > Access Control > Service Access Control
219
Figure 135 Management > Access Control > Remote Management
220
Table 88 Management > Access Control > Remote Management
220
Diagnostic
221
Chapter 28 Diagnostic
221
Figure 136 Management > Diagnostic
221
Table 89 Management > Diagnostic
221
Syslog
223
Chapter 29 Syslog
223
Syslog Overview
223
Syslog Setup
223
Table 90 Syslog Severity Levels
223
Syslog Server Setup
224
Figure 137 Management > Syslog
224
Table 91 Management > Syslog
224
Figure 138 Management > Syslog > Server Setup
225
Table 92 Management > Syslog > Server Setup
225
Cluster Management
227
Chapter 30 Cluster Management
227
Clustering Management Status Overview
227
Table 93 Zyxel Clustering Management Specifications
227
Clustering Management Status
228
Figure 139 Clustering Application Example
228
Figure 140 Management > Cluster Management: Status
228
Cluster Member Switch Management
229
Figure 141 Cluster Management: Cluster Member Web Configurator Screen
229
Table 94 Management > Cluster Management: Status
229
Clustering Management Configuration
230
Figure 142 Example: Uploading Firmware to a Cluster Member Switch
230
Table 95 FTP Upload to Cluster Member Example
230
Figure 143 Management > Cluster Management > Configuration
231
Table 96 Management > Cluster Management > Configuration
231
MAC Table
233
Chapter 31 MAC Table
233
MAC Table Overview
233
Figure 144 MAC Table Flowchart
233
Viewing the MAC Table
234
Figure 145 Management > MAC Table
234
Table 97 Management > MAC Table
234
ARP Table
235
Chapter 32 ARP Table
235
ARP Table Overview
235
How ARP Works
235
Viewing the ARP Table
235
Figure 146 Management > ARP Table
236
Table 98 Management > ARP Table
236
Configure Clone
237
Chapter 33 Configure Clone
237
Configure Clone Settings
237
Figure 147 Management > Configure Clone
237
Table 99 Management > Configure Clone
238
Part VI: Troubleshooting and Appendices
239
Chapter 34 Troubleshooting
241
Troubleshooting and Appendices
239
Problems Accessing the Switch
241
Problems Starting up the Switch
241
Table 100 Troubleshooting the Start-Up of Your Switch
241
Table 101 Troubleshooting Accessing the Switch
241
Pop-Up Windows, Javascripts and Java Permissions
242
Figure 148 Pop-Up Blocker
242
Figure 149 Internet Options
243
Figure 150 Internet Options
244
Figure 151 Pop-Up Blocker Settings
244
Figure 152 Internet Options
245
Figure 153 Security Settings - Java Scripting
246
Figure 154 Security Settings - Java
246
Figure 155 Java (Sun)
247
Problems with the Password
247
Table 102 Troubleshooting the Password
247
Appendix A Product Specifications
249
Figure 156 DC Power Plug
249
Table 103 Hardware Specifications
249
Figure 157 Masonry Plug and M4 Tap Screw
251
Table 104 Firmware Specifications
251
Table 105 Switching Specifications
253
Table 106 Standards Supported
254
Appendix B IP Addresses and Subnetting
257
Introduction to Ip Addresses
257
Figure 158 Network Number and Host ID
258
Table 107 IP Address Network Number and Host ID Example
258
Subnet Masks
258
Table 108 Subnet Masks
259
Table 109 Maximum Host Numbers
259
Table 110 Alternative Subnet Mask Notation
259
Figure 159 Subnetting Example: before Subnetting
260
Figure 160 Subnetting Example: after Subnetting
261
Table 111 Subnet 1
261
Table 112 Subnet 2
262
Table 113 Subnet 3
262
Table 114 Subnet 4
262
Table 115 Eight Subnets
262
Table 116 24-Bit Network Number Subnet Planning
263
Table 117 16-Bit Network Number Subnet Planning
263
Configuring Ip Addresses
264
Figure 161 Conflicting Computer IP Addresses Example
265
Figure 162 Conflicting Computer IP Addresses Example
265
Figure 163 Conflicting Computer and Router IP Addresses Example
266
Legal Information
267
Zyxel Limited Warranty
268
Customer Support
271
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ZyXEL Communications ES-2108 Specifications
General
Brand
ZyXEL Communications
Model
ES-2108
Category
Network Router
Language
English
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