ZyXEL Communications ZyXEL Dimension ES-4124

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Chapter 24 IP Source Guard

ES-4124 User’s Guide

209

24.4 DHCP Snooping

Use this screen to look at various statistics about the DHCP snooping database. To open this

screen, click Advanced Application > IP Source Guard > DHCP Snooping.

Figure 102 DHCP Snooping

Main Page

Default Chapter3
- About this User's Guide3
- Document Conventions4
- Safety Warnings6
- Table of Contents9
- Contents Overview9
- Table of Contents11
- List of Figures25
- List of Tables31
- Introduction35
- PART I Introduction35
Chapter 1 Getting to Know Your Switch37
- Introduction37
- Ways to Manage the Switch39
- Figure 3 High Performance Switched Workgroup Application39
- Figure 4 Shared Server Using VLAN Example39
- Good Habits for Managing the Switch40
Chapter 2 Hardware Installation and Connection41
- Freestanding Installation41
- Figure 5 Attaching Rubber Feet41
- Mounting the Switch on a Rack42
- Hardware Overview45
Chapter 3 Hardware Overview45
- Panel Connections45
- Rear Panel48
- Leds49
- Table 2 Leds49
- Basic Configuration51
- Part II: Basic Configuration51
Chapter 4 The Web Configurator53
- Introduction53
- System Login53
- The Status Screen54
- Saving Your Configuration59
- Switch Lockout59
- Figure 17 Change Administrator Login Password59
- Resetting the Switch60
  - Reload the Configuration File60
- Logging out of the Web Configurator61
- Help61
- Figure 18 Resetting the Switch: Via the Console Port61
- Figure 19 Web Configurator: Logout Screen61
Chapter 5 Initial Setup Example63
- Overview63
Chapter 6 System Status and Port Statistics69
- Overview69
- Port Status Summary69
- Basic Setting75
Chapter 7 Basic Setting75
- Overview75
- System Information75
- Figure 25 Basic Setting > System Info76
- Table 8 Basic Setting > System Info76
- General Setup77
- Figure 26 Basic Setting > General Setup77
- Table 9 Basic Setting > General Setup78
- Introduction to Vlans79
- Switch Setup Screen79
- Figure 27 Basic Setting > Switch Setup80
- Table 10 Basic Setting > Switch Setup80
- IP Setup81
- Port Setup83
- Figure 29 Basic Setting > Port Setup84
- Table 12 Basic Setting > Port Setup84
- Advanced Setup87
- Part III: Advanced Setup87
  - Vlan89
Chapter 8 VLAN89
- Introduction to IEEE 802.1Q Tagged Vlans89
  - Forwarding Tagged and Untagged Frames89
- Automatic VLAN Registration90
- Port VLAN Trunking91
- Select the VLAN Type91
- Static VLAN91
- Subnet Based Vlans96
- Figure 36 Subnet Based VLAN Application Example96
- Configuring Subnet Based VLAN97
- Figure 37 Advanced Application > VLAN > VLAN Port Setting > Subnet Based VLAN97
- Table 18 Advanced Application > VLAN > VLAN Port Setting > Subnet Based VLAN Setup97
- Protocol Based Vlans98
- Configuring Protocol Based VLAN99
- Figure 38 Protocol Based VLAN Application Example99
- Figure 39 Advanced Application > VLAN > VLAN Port Setting > Protocol Based VLAN99
- Create an IP-Based VLAN Example100
- Table 19 Advanced Application > VLAN > VLAN Port Setting > Protocol Based VLAN Setup100
- Port-Based VLAN Setup101
Chapter 9 Static MAC Forward Setup105
- Overview105
- Configuring Static MAC Forwarding105
- Figure 43 Advanced Application > Static MAC Forwarding105
- Table 21 Advanced Application > Static MAC Forwarding106
- Filtering107
Chapter 10 Filtering107
- Configure a Filtering Rule107
- Figure 44 Advanced Application > Filtering107
- Table 22 Advanced Application > Filtering107
Chapter 11109
- Spanning Tree Protocol109
- STP/RSTP Overview109
  - STP Terminology109
  - How STP Works110
  - Table 23 STP Path Costs110
  - STP Port States111
  - Multiple RSTP111
  - Figure 45 MRSTP Network Example111
  - Table 24 STP Port States111
  - Multiple STP112
  - Figure 46 STP/RSTP Network Example112
  - Figure 47 MSTP Network Example113
- Spanning Tree Protocol Status Screen114
- Figure 48 Mstis in Different Regions114
- Figure 49 MSTP and Legacy RSTP Network Example114
- Spanning Tree Configuration115
- Figure 50 Advanced Application > Spanning Tree Protocol115
- Figure 51 Advanced Application > Spanning Tree Protocol > Configuration115
- Table 25 Advanced Application > Spanning Tree Protocol > Configuration115
- Configure Rapid Spanning Tree Protocol116
- Figure 52 Advanced Application > Spanning Tree Protocol > RSTP116
- Table 26 Advanced Application > Spanning Tree Protocol > RSTP116
- Rapid Spanning Tree Protocol Status118
- Figure 53 Advanced Application > Spanning Tree Protocol > Status: RSTP118
- Table 27 Advanced Application > Spanning Tree Protocol > Status: RSTP118
- Configure Multiple Rapid Spanning Tree Protocol119
- Figure 54 Advanced Application > Spanning Tree Protocol > MRSTP119
- Table 28 Advanced Application > Spanning Tree Protocol > MRSTP119
- Multiple Rapid Spanning Tree Protocol Status121
- Figure 55 Advanced Application > Spanning Tree Protocol > Status: MRSTP121
- Table 29 Advanced Application > Spanning Tree Protocol > Status: MRSTP121
- Configure Multiple Spanning Tree Protocol122
- Figure 56 Advanced Application > Spanning Tree Protocol > MSTP123
- Table 30 Advanced Application > Spanning Tree Protocol > MSTP124
- Multiple Spanning Tree Protocol Status125
- Figure 57 Advanced Application > Spanning Tree Protocol > Status: MSTP126
- Table 31 Advanced Application > Spanning Tree Protocol > Status: MSTP126
- Bandwidth Control129
Chapter 12 Bandwidth Control129
- Bandwidth Control Overview129
  - CIR and PIR129
- Bandwidth Control Setup129
- Figure 58 Advanced Application > Bandwidth Control130
- Table 32 Advanced Application > Bandwidth Control130
Chapter 13 Broadcast Storm Control131
- Broadcast Storm Control Setup131
- Figure 59 Advanced Application > Broadcast Storm Control131
- Table 33 Advanced Application > Broadcast Storm Control132
- Mirroring133
Chapter 14 Mirroring133
- Port Mirroring Setup133
- Figure 60 Advanced Application > Mirroring133
- Table 34 Advanced Application > Mirroring134
- Link Aggregation135
Chapter 15 Link Aggregation135
- Link Aggregation Overview135
- Dynamic Link Aggregation135
  - Link Aggregation ID136
- Link Aggregation Status136
- Figure 61 Advanced Application > Link Aggregation Status136
- Table 35 Link Aggregation ID: Local Switch136
- Table 36 Link Aggregation ID: Peer Switch136
- Table 37 Advanced Application > Link Aggregation Status136
- Link Aggregation Setting137
- Figure 62 Advanced Application > Link Aggregation > Link Aggregation Setting137
- Link Aggregation Control Protocol138
- Table 38 Advanced Application > Link Aggregation > Link Aggregation Setting138
- Figure 63 Advanced Application > Link Aggregation > Link Aggregation Setting > LACP139
- Table 39 Advanced Application > Link Aggregation > Link Aggregation Setting > LACP139
- Static Trunking Example140
- Figure 64 Trunking Example - Physical Connections140
- Figure 65 Trunking Example - Configuration Screen141
- Port Authentication143
Chapter 16 Port Authentication143
- Port Authentication Overview143
- Port Authentication Configuration145
- Port Security149
Chapter 17 Port Security149
- About Port Security149
- Port Security Setup149
- Figure 71 Advanced Application > Port Security150
- Table 42 Advanced Application > Port Security150
- Classifier153
Chapter 18 Classifier153
- About the Classifier and Qos153
- Configuring the Classifier153
- Figure 72 Advanced Application > Classifier154
- Table 43 Advanced Application > Classifier154
- Viewing and Editing Classifier Configuration156
- Figure 73 Advanced Application > Classifier: Summary Table156
- Table 44 Classifier: Summary Table156
- Table 45 Common Ethernet Types and Protocol Number156
- Classifier Example157
Chapter 19 Policy Rule159
- Policy Rules Overview159
  - Diffserv159
  - DSCP and Per-Hop Behavior159
- Configuring Policy Rules160
- Figure 75 Advanced Application > Policy Rule160
- Table 47 Advanced Application > Policy Rule161
- Viewing and Editing Policy Configuration162
- Figure 76 Advanced Application > Policy Rule: Summary Table162
- Table 48 Policy: Summary Table162
- Policy Example163
- Figure 77 Policy Example163
- Queuing Method165
Chapter 20 Queuing Method165
- Queuing Method Overview165
- Configuring Queuing166
- Figure 78 Advanced Application > Queuing Method167
- Table 49 Advanced Application > Queuing Method167
- VLAN Stacking169
Chapter 21 VLAN Stacking169
- VLAN Stacking Overview169
  - VLAN Stacking Example169
- VLAN Stacking Port Roles170
- Figure 79 VLAN Stacking Example170
- VLAN Tag Format171
- Configuring VLAN Stacking172
- Figure 80 Advanced Application > VLAN Stacking172
- Table 53 Advanced Application > VLAN Stacking172
- Multicast175
Chapter 22 Multicast175
- Multicast Overview175
- Multicast Status176
- Multicast Setting176
- Figure 81 Advanced Application > Multicast176
- Table 54 Multicast Status176
- Figure 82 Advanced Application > Multicast > Multicast Setting177
- Table 55 Advanced Application > Multicast > Multicast Setting177
- IGMP Snooping VLAN178
- Figure 83 Advanced Application > Multicast > Multicast Setting > IGMP Snooping VLAN179
- Table 56 Advanced Application > Multicast > Multicast Setting > IGMP Snooping VLAN179
- IGMP Filtering Profile180
- Figure 84 Advanced Application > Multicast > Multicast Setting > IGMP Filtering Profile180
- Table 57 Advanced Application > Multicast > Multicast Setting > IGMP Filtering Profile180
- MVR Overview181
- General MVR Configuration182
- Figure 86 MVR Multicast Television Example182
- Figure 87 Advanced Application > Multicast > Multicast Setting > MVR183
- Table 58 Advanced Application > Multicast > Multicast Setting > MVR183
- MVR Group Configuration184
Chapter 23 Authentication & Accounting189
- Authentication, Authorization and Accounting189
- Authentication and Accounting Screens190
- Supported RADIUS Attributes198
- IP Source Guard203
Chapter 24 IP Source Guard203
- IP Source Guard Overview203
- IP Source Guard207
- IP Source Guard Static Binding207
- Figure 100 IP Source Guard207
- Table 69 IP Source Guard207
- Figure 101 IP Source Guard Static Binding208
- Table 70 IP Source Guard Static Binding208
- DHCP Snooping209
- Figure 102 DHCP Snooping209
- Table 71 DHCP Snooping210
- DHCP Snooping Configure212
- ARP Inspection Status216
- ARP Inspection Configure219
- Loop Guard223
Chapter 25 Loop Guard223
- Loop Guard Overview223
- Figure 112 Loop Guard Vs STP223
- Figure 113 Switch in Loop State224
- Figure 114 Loop Guard - Probe Packet224
- Figure 115 Loop Guard - Network Loop224
- Loop Guard Setup225
- Figure 116 Advanced Application > Loop Guard225
- Table 81 Advanced Application > Loop Guard225
- IP Application227
- Part IV: IP Application227
  - Static Route229
Chapter 26 Static Route229
- Configuring Static Routing229
- Figure 117 IP Application > Static Routing229
- Table 82 IP Application > Static Routing229
- Rip231
Chapter 27 RIP231
- RIP Overview231
- Configuring RIP231
- Figure 118 IP Application > RIP232
- Table 83 IP Application > RIP232
- Ospf233
Chapter 28 OSPF233
- OSPF Overview233
- OSPF Status235
- Figure 120 OSPF Router Election Example235
- Figure 121 IP Application > OSPF Status236
- Table 86 IP Application > OSPF Status236
- Table 87 OSPF Status: Common Output Fields236
- OSPF Configuration237
- Figure 122 IP Application > OSPF Configuration: Activating and General Settings238
- Table 88 IP Application > OSPF Configuration: Activating and General Settings238
- Configure OSPF Areas239
- Configuring OSPF Interfaces240
- Figure 124 IP Application > OSPF Configuration: Summary Table240
- Table 90 IP Application > OSPF Configuration: Summary Table240
- Figure 125 IP Application > OSPF Configuration > OSPF Interface241
- Table 91 IP Application > OSPF Configuration > OSPF Interface241
- OSPF Virtual-Links242
- Figure 126 IP Application > OSPF Configuration > OSPF Virtual Link242
- Table 92 IP Application > OSPF Configuration > OSPF Virtual Link243
- Igmp245
Chapter 29 IGMP245
- IGMP Overview245
- Port-Based IGMP247
- Configuring IGMP247
- Figure 129 IGMP Version 2 Example247
- Figure 130 IGMP Version 3 Example247
- Figure 131 IP Application > IGMP248
- Table 93 IP Application > IGMP248
- Dvmrp249
Chapter 30 DVMRP249
- DVMRP Overview249
- How DVMRP Works249
  - DVMRP Terminology250
- Configuring DVMRP250
- Default DVMRP Timer Values252
- Figure 136 DVMRP: Duplicate VID Error Message252
- Table 95 DVMRP: Default Timer Values252
- IP Multicast253
Chapter 31 IP Multicast253
- IP Multicast Overview253
- Configuring Multicast253
- Figure 137 IP Application > IP Multicast253
- Table 96 IP Application > IP Multicast254
Chapter 32 Differentiated Services255
- Diffserv Overview255
- Two Rate Three Color Marker Traffic Policing256
- Activating Diffserv258
- DSCP-To-IEEE 802.1P Priority Settings260
- Dhcp263
Chapter 33 DHCP263
- DHCP Overview263
  - DHCP Modes263
  - DHCP Configuration Options263
- DHCP Status264
- DHCP Server Status Detail264
- Figure 145 IP Application > DHCP Status264
- Figure 146 IP Application > DHCP > DHCP Server Status Detail264
- Table 101 IP Application > DHCP Status264
- DHCP Relay265
- Configuring DHCP VLAN Settings268
- Vrrp271
Chapter 34 VRRP271
- VRRP Overview271
- Figure 153 VRRP: Example 1271
- VRRP Status272
- Figure 154 IP Application > VRRP Status272
- Table 106 IP Application > VRRP Status272
- VRRP Configuration273
- VRRP Configuration Examples276
- Management281
- Part V: Management281
  - Maintenance283
Chapter 35 Maintenance283
- The Maintenance Screen283
- Figure 168 Management > Maintenance283
- Table 110 Management > Maintenance283
- Load Factory Default284
- Save Configuration284
- Figure 169 Load Factory Default: Start284
- Reboot System285
- Firmware Upgrade285
- Figure 170 Reboot System: Confirmation285
- Figure 171 Management > Maintenance > Firmware Upgrade285
- Restore a Configuration File286
- Backup a Configuration File286
- Figure 172 Management > Maintenance > Restore Configuration286
- Figure 173 Management > Maintenance > Backup Configuration286
- FTP Command Line287
- Access Control289
Chapter 36 Access Control289
- Access Control Overview289
- The Access Control Main Screen289
- Figure 174 Management > Access Control289
- Table 113 Access Control Overview289
- About SNMP290
  - Figure 175 SNMP Management Model290
  - Table 114 SNMP Commands290
  - SNMP Traps291
  - SNMP V3 and Security291
  - Supported Mibs291
  - Table 115 SNMP System Traps291
  - Table 116 SNMP Interfacetraps292
  - Table 117 AAA Traps293
  - Table 118 SNMP IP Traps293
  - Configuring SNMP294
  - Table 119 SNMP Switch Traps294
  - Figure 176 Management > Access Control > SNMP295
  - Table 120 Management > Access Control > SNMP295
  - Configuring SNMP Trap Group296
  - Figure 177 Management > Access Control > SNMP > Trap Group297
  - Setting up Login Accounts297
  - Table 121 Management > Access Control > SNMP > Trap Group297
  - Figure 178 Management > Access Control > Logins298
  - Table 122 Management > Access Control > Logins298
- SSH Overview299
- How SSH Works299
- Figure 179 SSH Communication Example299
- Figure 180 How SSH Works299
- SSH Implementation on the Switch300
  - Requirements for Using SSH300
- Introduction to HTTPS300
- HTTPS Example301
  - Internet Explorer Warning Messages301
  - Figure 181 HTTPS Implementation301
  - Figure 182 Security Alert Dialog Box (Internet Explorer)301
  - Netscape Navigator Warning Messages302
  - The Main Screen302
  - Figure 183 Security Certificate 1 (Netscape)302
  - Figure 184 Security Certificate 2 (Netscape)302
- Service Port Access Control303
- Figure 185 Example: Lock Denoting a Secure Connection303
- Figure 186 Management > Access Control > Service Access Control303
- Remote Management304
- Figure 187 Management > Access Control > Remote Management304
- Table 123 Management > Access Control > Service Access Control304
- Table 124 Management > Access Control > Remote Management304
- Diagnostic307
Chapter 37 Diagnostic307
- Figure 188 Management > Diagnostic307
  - Table 125 Management > Diagnostic307
  - Syslog309
Chapter 38 Syslog309
- Syslog Overview309
- Syslog Setup309
- Table 126 Syslog Severity Levels309
- Syslog Server Setup310
- Figure 189 Management > Syslog310
- Table 127 Management > Syslog310
- Figure 190 Management > Syslog > Server Setup311
- Table 128 Management > Syslog > Server Setup311
- Cluster Management313
Chapter 39 Cluster Management313
- Clustering Management Status Overview313
- Table 129 Zyxel Clustering Management Specifications313
- Cluster Management Status314
- Clustering Management Configuration316
- Figure 194 Example: Uploading Firmware to a Cluster Member Switch316
- Table 131 FTP Upload to Cluster Member Example316
- Figure 195 Management > Clustering Management > Configuration317
- Table 132 Management > Clustering Management > Configuration317
- MAC Table319
Chapter 40 MAC Table319
- MAC Table Overview319
- Figure 196 MAC Table Flowchart319
- Viewing the MAC Table320
- Figure 197 Management > MAC Table320
- Table 133 Management > MAC Table320
- IP Table321
Chapter 41 IP Table321
- IP Table Overview321
- Figure 198 IP Table Flowchart321
- Viewing the IP Table322
- Figure 199 Management > IP Table322
- Table 134 Management > IP Table322
- ARP Table323
Chapter 42 ARP Table323
- ARP Table Overview323
  - How ARP Works323
- Viewing the ARP Table323
- Figure 200 Management > ARP Table324
- Table 135 Management > ARP Table324
- Routing Table325
Chapter 43 Routing Table325
- Overview325
- Viewing the Routing Table Status325
- Figure 201 Management > Routing Table325
- Table 136 Management > Routing Table325
- Configure Clone327
Chapter 44 Configure Clone327
- Figure 202 Management > Configure Clone327
- Table 137 Management > Configure Clone328
- Commands and Troubleshooting329
- Part VI: Commands and Troubleshooting329
  - Introducing Commands331
Chapter 45 Introducing Commands331
- Overview331
- Accessing the CLI331
  - The Console Port331
- The Login Screen332
- Command Syntax Conventions332
- Changing the Password333
- Creating a New IP Interface333
- Privilege Levels334
- Command Modes334
- Getting Help335
  - Table 138 Command Interpreter Mode Summary335
  - List of Available Commands336
- Using Command History337
- Saving Your Configuration337
  - Switch Configuration File338
  - Logging out338
- Command Summary338
- Mvr Commands383
- Table 145 Command Summary: Mvr Commands383
- User and Enable Mode Commands385
- Overview385
Chapter 46 User and Enable Mode Commands.....................................................................................385
- Show Commands385
- Ping388
- Traceroute388
- Copy Port Attributes389
- Configuration File Maintenance389
Chapter 47 Configuration Mode Commands .........................................................................................391
- Enabling IGMP Snooping391
- Configure IGMP Filter392
- Enabling STP393
- No Command Examples394
- Queuing Method Commands397
- Static Route Commands398
- Enabling MAC Filtering398
- Enabling Trunking399
- Enabling Port Authentication400
Chapter 48 Interface Commands ............................................................................................................403
- Interface Command Examples403
Chapter 49 IEEE 802.1Q Tagged VLAN Commands413
- Configuring Tagged VLAN413
- Global VLAN1Q Tagged VLAN Configuration Commands414
- Port VLAN Commands415
- Enable VLAN418
- Disable VLAN418
- Show VLAN Setting418
- Multicast VLAN Registration Commands421
- Overview421
- Create Multicast VLAN421
Chapter 50 Multicast VLAN Registration Commands422
- Routing Domain Command Examples423
  - Interface Route-Domain423
Chapter 51 Routing Domain Command Examples424
- Troubleshooting425
Chapter 52 Troubleshooting425
- Problems Starting up the Switch425
- Problems Accessing the Switch425
- Problems with the Password431
- Figure 211 Java (Sun)431
- Table 148 Troubleshooting the Password431
- Appendices and Index433
- Part VII: Appendices and Index433
Appendix A Product Specifications435
- Table 149 Hardware Specifications435
- Table 150 Firmware Specifications436
- Table 151 Switching Specifications438
- Table 152 Standards Supported439
Appendix B IP Addresses and Subnetting441
- Introduction to Ip Addresses441
- Figure 212 Network Number and Host ID442
- Table 153 IP Address Network Number and Host ID Example442
- Table 154 Subnet Masks443
- Table 155 Maximum Host Numbers443
- Table 156 Alternative Subnet Mask Notation443
- Figure 213 Subnetting Example: before Subnetting444
- Figure 214 Subnetting Example: after Subnetting445
- Table 157 Subnet 1445
- Table 158 Subnet 2446
- Table 159 Subnet 3446
- Table 160 Subnet 4446
- Table 161 Eight Subnets446
- Table 162 24-Bit Network Number Subnet Planning447
- Table 163 16-Bit Network Number Subnet Planning447
- Configuring Ip Addresses448
Appendix C Legal Information449
Appendix D Customer Support453
- Index457

ZyXEL Communications ZyXEL Dimension ES-4124 - 24.4 DHCP Snooping

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