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IES-612-51 User’s Guide
191
CHAPTER 26
DHCP Snoop
This chapter shows you how to set up DHCP snooping settings on the subscriber ports.
26.1 DHCP Snoop Overview
DHCP snooping prevents clients from assigning their own IP addresses. The IES-612-51 can
store every (DSL port, MAC address, IP address) tuple offered by the DHCP server. Then, it
only forwards packets from clients whose MAC address and IP address are recorded. Packets
from unknown IP addresses are dropped.
26.2 DHCP Snoop Screen
Use this screen to activate or deactivate DHCP snooping on each port. To open this screen,
click Advanced Application, DHCP Snoop.
Figure 95 DHCP Snoop
The following table describes the labels in this screen.
Table 56 DHCP Snoop
LABEL DESCRIPTION
DHCP Snoop Status Click DHCP Snoop Status to open the screen where you can look at or clear
the current DHCP snooping table on each port (see Section 26.3 on page 192).
DHCP Counter Click DHCP Counter to open the screen where you can look at a summary of
the DHCP packets on each port (see Section 26.4 on page 193).
Port This field displays each DSL port number.
Active This field displays whether DHCP snooping is active (“V”) or inactive (“-”) on this
port.
- IES-612-51 1
- About This User's Guide 3
- Document Conventions 4
- Icons Used in Figures 5
- Safety Warnings 6
- Safety Warnings 7
- Contents Overview 9
- Table of Contents 11
- Chapter 47 20
- Chapter 48 20
- Chapter 55 23
- Table of Contents 25
- List of Figures 27
- List of Tables 33
- Introduction 39
- CHAPTER 1 41
- 1.2.2 Curbside Application 42
- CHAPTER 2 45
- Figure 5 Rack Mounting 47
- Frame Ground 48
- CHAPTER 3 49
- 3.2 LEDs 50
- 3.2.4 Telco-50 Cables 51
- 3.2.5 Telco-50 Connections 52
- 3.2.6 ADSL Connections 52
- 3.2.7 Typical MDF Scenarios 53
- Chapter 3 Front Panel 54
- Chapter 3 Front Panel 55
- Basic Settings 59
- CHAPTER 4 61
- Figure 17 Login 62
- Figure 18 Home 62
- 4.4 Navigation Panel 63
- 4.5 Changing Your Password 65
- Figure 20 User Account 66
- Figure 21 Logout 67
- CHAPTER 5 69
- Figure 23 xDSL Port Setup 70
- Figure 24 VC Setup 71
- Figure 25 VC Setup, Delete 71
- Figure 26 Select Ports 71
- Figure 27 VC Setup 72
- Figure 28 VC Setup 72
- Figure 29 Select Ports 73
- Figure 30 VC Setup 73
- Figure 31 Config Save 73
- CHAPTER 6 75
- Table 5 Home (continued) 76
- 6.1.3 RMON Statistics Screen 81
- 6.1.4 RMON History Screen 83
- CHAPTER 7 87
- Chapter 7 System Information 88
- Table 11 System Info 88
- Chapter 7 System Information 89
- CHAPTER 8 91
- Chapter 8 General Setup 92
- CHAPTER 9 93
- 9.2 Authentication Screen 94
- Chapter 9 User Account 95
- Table 14 User Account 95
- Chapter 9 User Account 96
- CHAPTER 10 97
- 10.3 Switch Setup Screen 99
- Chapter 10 Switch Setup 100
- IES-612-51 User’s Guide 100
- Figure 45 Switch Setup 100
- Table 15 Switch Setup 100
- Chapter 10 Switch Setup 101
- CHAPTER 11 103
- Chapter 11 IP Setup 104
- CHAPTER 12 105
- Chapter 12 ENET Port Setup 106
- CHAPTER 13 107
- 13.4 Interleave Delay 108
- 13.6 Default Settings 109
- 13.7 xDSL Port Setup Screen 109
- Chapter 13 xDSL Port Setup 110
- Figure 49 Select Ports 110
- Chapter 13 xDSL Port Setup 111
- Figure 50 xDSL Port Setting 112
- Table 20 xDSL Port Setting 112
- 13.8 Virtual Channels 115
- 13.9 VC Setup Screen 116
- Figure 51 VC Setup 117
- Table 21 VC Setup 117
- Figure 53 Select Ports 119
- 13.10 Priority-based PVCs 120
- 13.11 PPVC Setup Screen 121
- Figure 56 PPVC Setup, Edit 122
- Table 24 PPVC Setup, Edit 123
- CHAPTER 14 125
- 14.2 ATM QoS 127
- 14.3 Traffic Shaping 128
- 14.4 Upstream Policing 130
- 14.5 VC Profile Screen 131
- 14.6 Alarm Profile Screen 133
- 14.7 IGMP Filtering 134
- CHAPTER 15 137
- 15.2 xDSL Performance Screen 138
- Chapter 15 xDSL Line Data 139
- Figure 64 xDSL Performance 139
- Table 30 xDSL Performance 139
- 15.3 xDSL Line Data Screen 140
- Figure 65 xDSL Line Data 141
- Chapter 15 xDSL Line Data 142
- Table 31 xDSL Line Data 142
- PART III 143
- CHAPTER 16 145
- 16.3 VLAN Status Screen 146
- Chapter 16 VLAN 147
- Figure 66 VLAN Status 147
- Table 32 VLAN Status 147
- Chapter 16 VLAN 148
- Figure 68 VLAN Port Setting 150
- Table 34 VLAN Port Setting 150
- Figure 69 Select Ports 151
- CHAPTER 17 153
- 17.3 IGMP Status Screen 154
- Chapter 17 IGMP 155
- Figure 71 IGMP (Status) 155
- Table 35 IGMP (Status) 155
- 17.4 IGMP Bandwidth Screen 156
- 17.5 IGMP Setup Screen 158
- 17.7 IGMP Count Screen 159
- 17.8 IGMP Port Info Screen 160
- 17.9 IGMP Port Group Screen 160
- Table 41 IGMP Port Group 161
- Chapter 17 IGMP 162
- CHAPTER 18 163
- Chapter 18 Static Multicast 164
- CHAPTER 19 165
- 19.3 MVLAN Setup Screen 166
- Chapter 19 Multicast VLAN 167
- Figure 80 MVLAN Setup 167
- Table 44 MVLAN Setup 167
- 19.4 MVLAN Group Screen 168
- Chapter 19 Multicast VLAN 170
- CHAPTER 20 171
- Chapter 20 Filtering 172
- CHAPTER 21 173
- Chapter 21 MAC Filter 174
- CHAPTER 22 175
- Table 49 RSTP Port States 176
- CHAPTER 23 181
- 23.2 RADIUS Screen 182
- 23.3 802.1x Screen 183
- Table 53 802.1x (continued) 184
- CHAPTER 24 185
- Chapter 24 Port Security 186
- Figure 91 Select Ports 186
- CHAPTER 25 187
- 25.3 DHCP Relay Screen 188
- Chapter 25 DHCP Relay 189
- Table 55 DHCP Relay 189
- Chapter 25 DHCP Relay 190
- CHAPTER 26 191
- Chapter 26 DHCP Snoop 192
- Figure 96 DHCP Snoop Status 192
- Table 57 DHCP Snoop Status 192
- 26.4 DHCP Counter Screen 193
- CHAPTER 27 195
- 27.2 2684 Routed PVC Screen 196
- 27.4 RPVC Arp Proxy Screen 199
- Figure 101 RPVC Arp Proxy 200
- Table 61 RPVC Arp Proxy 200
- CHAPTER 28 203
- Chapter 28 PPPoA to PPPoE 204
- Figure 104 PPPoA to PPPoE 204
- Table 63 PPPoA to PPPoE 204
- Chapter 28 PPPoA to PPPoE 205
- CHAPTER 29 209
- 29.3 DSCP Map Screen 210
- CHAPTER 30 211
- 30.2 TLS PVC Screen 212
- Chapter 30 TLS PVC 213
- Figure 109 TLS PVC 213
- Table 67 TLS PVC 213
- Chapter 30 TLS PVC 214
- CHAPTER 31 215
- 31.2 ACL Setup Screen 216
- Chapter 31 ACL 217
- Figure 110 ACL Setup 217
- Table 68 ACL Setup 217
- ACL, ACL Profile Setup 218
- 31.4 ACL Profile Map Screen 219
- Chapter 31 ACL 220
- Figure 112 ACL Profile Map 220
- Table 70 ACL Profile Map 220
- CHAPTER 32 221
- CHAPTER 33 223
- Chapter 33 Syslog 224
- CHAPTER 34 225
- Chapter 34 Access Control 226
- Table 74 SNMP Commands 226
- 34.3.1 Supported MIBs 227
- 34.3.2 SNMP Traps 227
- 34.4 SNMP Screen 228
- Chapter 34 Access Control 229
- Figure 117 SNMP 229
- Table 76 SNMP 229
- Routing Protocol 233
- Alarm and 233
- Management 233
- CHAPTER 35 235
- Chapter 35 Static Routing 236
- CHAPTER 36 237
- Chapter 36 Maintenance 238
- Figure 122 Firmware Upgrade 238
- 36.5 Load Factory Defaults 239
- 36.6 Reboot System 240
- 36.7 Command Line FTP 240
- CHAPTER 37 241
- Chapter 37 Diagnostic 242
- Table 80 Diagnostic 242
- Chapter 37 Diagnostic 243
- CHAPTER 38 245
- 38.2 MAC Table Screen 246
- CHAPTER 39 247
- Chapter 39 ARP Table 248
- Figure 130 ARP Table 248
- Table 82 ARP Table 248
- CHAPTER 40 249
- 40.3 Alarm Descriptions 250
- Chapter 40 Alarm 251
- Chapter 40 Alarm 252
- Table 85 Alarm Event Setup 252
- 40.5 Alarm Port Setup Screen 254
- CLI Commands 255
- CHAPTER 41 257
- 41.2 Logging in 258
- 41.3 Command Conventions 258
- Table 91 Table Title 259
- 41.7 Logging Out 261
- CHAPTER 42 263
- 42.2 IP Status 264
- 42.3 Configuration Status 264
- 42.4 Reset to Defaults 265
- 42.5 Port and VLAN Isolation 265
- 42.7 Statistics Port Command 266
- CHAPTER 43 267
- Chapter 43 System Commands 268
- Chapter 43 System Commands 269
- 43.1.3 Logs Command Examples 270
- 43.1.3.2 Log Messages 271
- 43.1.4 Clearing the Log 273
- CHAPTER 44 275
- Chapter 44 Alarm Commands 276
- Chapter 44 Alarm Commands 277
- 44.2.5 Log Format 279
- CHAPTER 45 281
- Chapter 45 DHCP Commands 282
- 45.2.1 Show Command Example 283
- 45.5 DHCP Snoop Commands 284
- Chapter 45 DHCP Commands 285
- CHAPTER 46 287
- 46.5 GARP Timer Commands 292
- 46.6 Isolation Commands 292
- CHAPTER 47 295
- Chapter 47 MAC Commands 296
- 47.2 MAC Count Commands 297
- CHAPTER 48 299
- 48.2 IGMP Filter Commands 300
- 48.3 IGMP Bandwidth Commands 301
- 1~100000, in units of kbps 302
- Chapter 48 IGMP Commands 303
- Chapter 48 IGMP Commands 304
- 48.7 Multicast VLAN Commands 305
- CHAPTER 49 309
- CHAPTER 50 313
- 50.2 DSCP Commands 314
- 50.3 Ethernet Commands 314
- 50.4 Queuemap Commands 315
- 50.5 RSTP Commands 315
- 50.7 RMON Command 316
- CHAPTER 51 317
- Chapter 51 IP Commands 318
- Chapter 51 IP Commands 319
- CHAPTER 52 321
- Chapter 52 IP Bridge Commands 322
- CHAPTER 53 323
- Chapter 53 SNMP Commands 324
- Table 131 SNMP Commands 324
- CHAPTER 54 325
- 54.2 ADSL Commands 326
- Chapter 54 ADSL Commands 327
- Chapter 54 ADSL Commands 328
- 54.3 ADSL Profile Commands 334
- An example is shown next 339
- G.992.3 for more information 345
- Table 140 ToneDiag Command 349
- 54.5 Alarm Profile Commands 350
- CHAPTER 55 353
- 55.3 PVC Channels 356
- 55.4 Priority-based PVCs 356
- Table 145 PPVC Commands 357
- Table 146 RPVC Commands 359
- Table 147 PAEPVC Commands 365
- PVC (1/33) on port 2 368
- CHAPTER 56 369
- Chapter 56 ACL Commands 370
- Table 150 ACL Commands 370
- 56.2 ACL Assignment Commands 371
- Troubleshooting 373
- CHAPTER 57 375
- 57.5 DSL Data Transmission 376
- 57.7 Testing Wiring 377
- Chapter 57 Troubleshooting 378
- Table 159 Wiring Tests 378
- 57.8 Local Server 379
- 57.9 Data Rate 379
- 57.10 Configured Settings 380
- 57.11 Password 380
- 57.12 System Lockout 380
- 57.13 SNMP 380
- 57.14 Telnet 381
- 57.15 Resetting the Defaults 381
- CHAPTER 58 385
- 58.2 Firmware Features 386
- 58.3 Standards Supported 390
- 58.4 Default Settings 391
- PART VII 395
- APPENDIX A 397
- Appendix A Changing a Fuse 398
- APPENDIX B 399
- ZyXEL Limited Warranty 400
- Appendix B Legal Information 401
- Appendix B Legal Information 402
- APPENDIX C 403
- Appendix C Customer Support 404
- Appendix C Customer Support 405
- Numerics 409
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