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ES-4024A User’s Guide
Chapter 18 DHCP 117
CHAPTER 18
DHCP
This chapter shows you how to configure the DHCP feature.
18.1 Overview
DHCP (Dynamic Host Configuration Protocol RFC 2131 and RFC 2132) allows individual
computers to obtain TCP/IP configuration at start-up from a server. You can configure the ES-
4024A as a DHCP server or disable it. When configured as a server, the ES-4024A provides
the TCP/IP configuration for the clients. If you disable the DHCP service, you must have
another DHCP server on your LAN, or else the computer must be manually configured.
18.1.1 DHCP modes
The ES-4024A can be configured as a DHCP server or DHCP relay agent.
• If you configure the ES-4024A as a DHCP server, it will maintain the pool of addresses
and distribute them to your LAN computers.
• If there is an Ethernet device that performs the DHCP server function for your network,
then you can configure the ES-4024A as a DHCP relay agent. When the ES-4024A
receives a request from a computer on your network, it contacts the Ethernet device (the
DHCP server) for the necessary IP information, and then relays the assigned information
back to the computer.
18.2 Configuring DHCP Server
Click Advanced Application, DHCP in the navigation panel. Select Server in the DHCP
Status field to display the screen as shown.
- ES-4024A 1
- Copyright 2
- Interference Statements and 3
- Warnings 3
- Registration 4
- Safety Warnings 4
- ZyXEL Limited Warranty 5
- Customer Support 6
- 6 Customer Support 7
- Table of Contents 8
- Chapter 39 16
- List of Figures 18
- 22 List of Figures 23
- List of Tables 24
- 26 List of Tables 27
- About This User's Guide 28
- Related Documentation 28
- Syntax Conventions 28
- Graphics Icons Key 29
- User Guide Feedback 29
- CHAPTER 1 30
- 1.3 Hardware Features 33
- 1.4 Applications 34
- CHAPTER 2 38
- 2.2.1.1 Precautions 39
- CHAPTER 3 42
- 3.1.2 Ethernet Ports 43
- 3.1.3 Mini GBIC Slots 43
- 3.2 Rear Panel 45
- 3.3 Front Panel LEDs 46
- 3.5 Uplink Scenario Example 48
- Figure 18 Uplink Example 49
- CHAPTER 4 50
- 4.3 The Status Screen 51
- 4.4 Switch Lockout 55
- 4.5 Resetting the Switch 56
- 4.7 Help 57
- CHAPTER 5 58
- 5.1.3 Creating a VLAN 60
- 5.1.4 Setting Port VID 61
- CHAPTER 6 64
- 6.2.1 Port Details 65
- CHAPTER 7 70
- 70 Chapter 7 Basic Setting 71
- Figure 29 System Info 71
- Table 8 System Info 71
- 7.3 General Setup 72
- 72 Chapter 7 Basic Setting 73
- Figure 30 General Setup 73
- Table 9 General Setup 73
- 7.4 Introduction to VLANs 74
- 7.5 IGMP Snooping 74
- 7.6 Switch Setup Screen 75
- 7.7 IP Setup 76
- 7.7.1 IP Interfaces 77
- 7.8 Port Setup 78
- 78 Chapter 7 Basic Setting 79
- Table 12 Port Setup 79
- CHAPTER 8 80
- 8.2.1 GARP 81
- 8.2.2 GVRP 81
- 8.3 Port VLAN Trunking 82
- 8.4 Select the VLAN Type 82
- 8.5 Static VLAN 83
- Chapter 8 VLAN 83 84
- Table 14 VLAN: VLAN Status 84
- 84 Chapter 8 VLAN 85
- Table 15 VLAN: Static VLAN 85
- Status screen 86
- 8.6 Port-based VLANs 87
- Chapter 8 VLAN 87 88
- 88 Chapter 8 VLAN 89
- Chapter 8 VLAN 89 90
- 90 Chapter 8 VLAN 91
- CHAPTER 9 92
- CHAPTER 10 94
- 94 Chapter 10 Filtering 95
- CHAPTER 11 96
- 11.2 STP Status 97
- 11.3 Configure STP 99
- ES-4024A User’s Guide 100
- CHAPTER 12 102
- CHAPTER 13 104
- CHAPTER 14 106
- 106 Chapter 14 Mirroring 107
- CHAPTER 15 108
- 15.1.2 Link Aggregation ID 109
- 15.3 Link Aggregation Setup 110
- CHAPTER 16 112
- CHAPTER 17 116
- 116 Chapter 17 Port Security 117
- Figure 54 Port Security 117
- Table 34 Port Security 117
- CHAPTER 18 118
- 118 Chapter 18 DHCP 119
- Figure 55 DHCP: Server 119
- Table 35 DHCP: Server 119
- Chapter 18 DHCP 119 120
- 18.3 Configuring DHCP Relay 121
- Chapter 18 DHCP 121 122
- Figure 58 DHCP: Relay 122
- Table 36 DHCP: Relay 122
- 122 Chapter 18 DHCP 123
- Chapter 18 DHCP 123 124
- 124 Chapter 18 DHCP 125
- CHAPTER 19 126
- 19.3 About SNMP 127
- 19.3.1 Supported MIBs 128
- 19.3.2 SNMP Traps 128
- 19.3.3 Configuring SNMP 129
- Chapter 19 Access Control 129 130
- 19.5 Remote Management 131
- Chapter 19 Access Control 131 132
- 132 Chapter 19 Access Control 133
- CHAPTER 20 134
- 134 Chapter 20 Classifier 135
- Figure 68 Classifier 135
- Table 44 Classifier 135
- Chapter 20 Classifier 135 136
- 136 Chapter 20 Classifier 137
- Table 46 Common IP Ports 137
- Chapter 20 Classifier 137 138
- 138 Chapter 20 Classifier 139
- CHAPTER 21 140
- 21.2 Activating DiffServ 141
- Table 47 DiffServ 142
- CHAPTER 22 146
- 146 Chapter 22 Queuing Method 147
- Figure 75 Queuing Method 147
- Table 51 Queuing Method 147
- CHAPTER 23 148
- 23.2 Viewing VRRP Status 149
- 23.3 Configuring VRRP 150
- 23.3.2 VRRP Parameters 151
- Chapter 23 VRRP 151 152
- 152 Chapter 23 VRRP 153
- Chapter 23 VRRP 153 154
- 23.5.2 Two Subnets Example 155
- 156 Chapter 23 VRRP 157
- CHAPTER 24 158
- 158 Chapter 24 Static Route 159
- CHAPTER 25 160
- 160 Chapter 25 RIP 161
- Figure 92 RIP 161
- Table 57 RIP 161
- CHAPTER 26 162
- 162 Chapter 26 IGMP 163
- Table 58 IGMP (continued) 163
- CHAPTER 27 164
- 27.3 Configuring DVMRP 165
- Chapter 27 DVMRP 165 166
- Table 59 DVMRP 166
- 166 Chapter 27 DVMRP 167
- CHAPTER 28 168
- 28.1.2 How OSPF Works 169
- 28.1.4 Configuring OSPF 169
- 28.2 OSPF Status 170
- 170 Chapter 28 OSPF 171
- Chapter 28 OSPF 171 172
- 28.4 Configuring OSPF Areas 173
- Chapter 28 OSPF 173 174
- 174 Chapter 28 OSPF 175
- Figure 104 OSPF Interface 175
- Table 68 OSPF Interface 175
- Chapter 28 OSPF 175 176
- Table 69 OSPF Virtual Link 176
- 176 Chapter 28 OSPF 177
- CHAPTER 29 178
- 178 Chapter 29 Maintenance 179
- 29.5 Load Factory Defaults 180
- 29.6 Reboot System 180
- 29.7 FTP Command Line 181
- 29.7.3 GUI-based FTP Clients 182
- 182 Chapter 29 Maintenance 183
- CHAPTER 30 184
- 184 Chapter 30 Diagnostic 185
- CHAPTER 31 186
- CHAPTER 32 192
- 32.2 Viewing the MAC Table 193
- CHAPTER 33 194
- 33.2 Viewing the IP Table 195
- CHAPTER 34 196
- 196 Chapter 34 ARP Table 197
- Figure 124 ARP Table 197
- Table 78 ARP Table 197
- CHAPTER 35 198
- 198 Chapter 35 Routing Table 199
- CHAPTER 36 200
- CHAPTER 37 204
- 37.2.1 Access Priority 205
- 37.2.2 The Console Port 205
- 37.2.3 Telnet 205
- 37.3 The Login Screen 206
- 37.5 Getting Help 206
- 37.6 Command Modes 208
- 37.7 Using Command History 208
- 37.9 Command Summary 209
- 37.9.1 User Mode 210
- 37.9.2 Enable Mode 210
- Note: The priority value 223
- MUST be a multiple 223
- 37.9.6 config-vlan Commands 227
- CHAPTER 38 230
- 38.2.2 show hardware-monitor 231
- 38.2.3 show logging 231
- 38.2.4 show interface 232
- 38.3 ping 233
- 38.4 traceroute 234
- 38.5 Restarting the Switch 234
- 38.6 no Command Examples 235
- 38.6.2 no trunk 236
- 38.7 interface Commands 237
- 38.7.3 filter 238
- 38.7.4 mirror 239
- 38.7.5 gvrp 239
- 38.7.6 ingress-check 240
- 38.7.7 frame-type 240
- 38.7.8 spq 241
- 38.7.9 wfq 241
- 38.7.10 egress set 242
- 38.7.11 qos priority 242
- 38.7.12 name 243
- 38.7.13 speed-duplex 243
- CHAPTER 39 246
- 39.3 Configuring Tagged VLAN 247
- 39.4.1 GARP Status 248
- 39.4.2 GARP Timer 248
- 39.4.3 GVRP Timer 249
- 39.4.4 Enable GVRP 249
- 39.5 Port VLAN Commands 250
- 39.5.4 Modify Static VLAN 251
- 39.5.5 Delete VLAN ID 252
- 39.6 Enable VLAN 253
- 39.7 Disable VLAN 253
- 39.8 Show VLAN Setting 253
- CHAPTER 40 256
- Figure 173 Pop-up Blocker 257
- Figure 175 Internet Options 259
- 40.2.1.2 JavaScripts 260
- 3 Scroll down to Scripting 261
- 40.2.1.3 Java Permissions 262
- 40.2.1.3.1 JAVA (Sun) 263
- Figure 180 Java (Sun) 264
- APPENDIX A 266
- 266 Product Specifications 267
- Product Specifications 267 268
- 268 Product Specifications 269
- APPENDIX B 270
- Subnet Masks 271
- Subnetting 271
- Example: Two Subnets 272
- 272 IP Subnetting 273
- Table 99 Subnet 1 273
- Table 100 Subnet 2 273
- Example: Four Subnets 274
- Example Eight Subnets 275
- IP Subnetting 275 276
- 276 IP Subnetting 277
- Numerics 278
- 278 Index 279
- Index 279 280
- 280 Index 281
- Index 281 282
- 282 Index 283
- Index 283 284
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