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Chapter 25 IP Source Guard
GS1920 Series User’s Guide
191
Figure 137 Advanced Application > IP Source Guard > DHCP Snooping
The following table describes the labels in this screen.
Table 81 Advanced Application > IP Source Guard > DHCP Snooping
LABEL DESCRIPTION
Database Status This section displays the current settings for the DHCP snooping database. You can
configure them in the DHCP Snooping Configure screen. See Section 25.5 on
page 193.
Agent URL This field displays the location of the DHCP snooping database.
Write delay timer This field displays how long (in seconds) the Switch tries to complete a specific
update in the DHCP snooping database before it gives up.
Abort timer This field displays how long (in seconds) the Switch waits to update the DHCP
snooping database after the current bindings change.
This section displays information about the current update and the next update of
the DHCP snooping database.
- GS1920 Series 1
- User’s Guide 1
- IMPORTANT! 2
- READ CAREFULLY BEFORE USE 2
- Contents Overview 3
- Chapter 9 7
- Chapter 10 7
- Table of Contents 10
- GS1920 Series User’s Guide 10
- Table of Contents 11
- CHAPTER 1 19
- 1.1.1 Backbone Application 20
- 1.1.2 Bridging Example 20
- CHAPTER 2 24
- CHAPTER 3 27
- 3.1.2 Mini-GBIC Slots 28
- 3.1.2.2 Transceiver Removal 29
- 3.2 Rear Panel 30
- 3.3 LEDs 31
- 3.4.1 Side Panels 32
- Technical Reference 33
- CHAPTER 4 35
- 4.3 The Status Screen 36
- LINK DESCRIPTION 38
- 4.5 Switch Lockout 40
- 4.6 Resetting the Switch 41
- 4.8 Help 41
- CHAPTER 5 42
- 5.1.2 Setting Port VID 43
- 5.2 Configuring Switch 44
- Management IP Address 44
- CHAPTER 6 46
- 6.3.2 Creating a VLAN 50
- 6.3.3 Configuring DHCP Relay 52
- 6.3.4 Troubleshooting 53
- CHAPTER 7 54
- CHAPTER 8 59
- 8.3 General Setup 61
- 8.4 Introduction to VLANs 63
- 8.5 Switch Setup Screen 64
- 8.6 IP Setup 65
- 8.7 Port Setup 67
- 8.8 PoE Status 69
- 8.8.1 PoE Setup 71
- 8.9 Interface Setup 72
- 8.10 IPv6 73
- 8.10.1 IPv6 Interface Status 74
- Chapter 8 Basic Setting 76
- 8.10.2 IPv6 Configuration 77
- 8.10.3 IPv6 Global Setup 77
- 8.10.4 IPv6 Interface Setup 78
- 8.10.8 IPv6 Neighbor Setup 82
- 8.10.9 DHCPv6 Client Setup 83
- CHAPTER 9 85
- GARP Timers 86
- 9.1.2.2 Port VLAN Trunking 87
- 9.2 VLAN Status 88
- 9.2.1 VLAN Details 89
- 9.5 Subnet Based VLANs 92
- 9.6 Protocol Based VLANs 94
- Chapter 9 VLAN 98
- 9.8 Technical Reference 99
- CHAPTER 10 101
- CHAPTER 11 103
- LABEL DESCRIPTION 105
- CHAPTER 12 106
- Chapter 12 Filtering 107
- CHAPTER 13 108
- STP Terminology 109
- How STP Works 109
- STP Port States 110
- Multiple RSTP 110
- Multiple STP 110
- 13.11 Technical Reference 124
- 13.11.2 MST Region 125
- 13.11.3 MST Instance 126
- CHAPTER 14 127
- CHAPTER 15 129
- CHAPTER 16 131
- CHAPTER 17 133
- 17.2 Link Aggregation Status 134
- 17.5 Technical Reference 138
- CHAPTER 18 140
- 18.3.1 Guest VLAN 143
- Internet 143
- CHAPTER 19 146
- Chapter 19 Port Security 148
- CHAPTER 20 149
- 20.3 Classifier Example 153
- CHAPTER 21 154
- 21.3 Policy Example 157
- CHAPTER 22 158
- 22.2 Configuring Queuing 159
- CHAPTER 23 161
- IGMP Snooping and VLANs 162
- MVR Overview 162
- Types of MVR Ports 162
- MVR Modes 162
- 23.2 Multicast Setup 163
- 23.3 IPv4 Multicast Status 164
- Chapter 23 Multicast 166
- 23.4 IGMP Snooping VLAN 167
- News: 224.1.4.10 ~ 224.1.4.50 173
- Movie: 230.1.2.50 ~230.1.2.60 173
- CHAPTER 24 175
- 24.2 AAA Screens 176
- 24.3 RADIUS Server Setup 176
- 24.5 AAA Setup 180
- 24.6 Technical Reference 182
- VLAN Assignment 184
- VLAN ID 184
- Chapter 24 AAA 186
- CHAPTER 25 187
- 25.2 IP Source Guard 188
- 25.4 DHCP Snooping 190
- Chapter 25 IP Source Guard 192
- 25.6 ARP Inspection Status 198
- 25.10 Technical Reference 206
- 25.10.2.3 Syslog 209
- CHAPTER 26 210
- 26.2 Loop Guard Setup 212
- CHAPTER 27 214
- CHAPTER 28 218
- 28.1.2.2 Sub-Option Format 219
- 28.1.2.3 Port State 220
- 28.2 The PPPoE Screen 221
- 28.3.1 PPPoE IA Per-Port 222
- 28.3.3 PPPoE IA for VLAN 225
- Chapter 28 PPPoE 226
- CHAPTER 29 227
- Detect screen 229
- Chapter 29 Error Disable 232
- CHAPTER 30 233
- CHAPTER 31 235
- 31.2 LLDP-MED Overview 236
- 31.3 LLDP Screens 237
- 31.4 LLDP Local Status 238
- 31.5 LLDP Remote Status 243
- Management 244
- (Dot1 and Dot3 TLV) 247
- (MED TLV) 248
- 31.6 LLDP Configuration 250
- 31.7 LLDP-MED Configuration 254
- 31.9 LLDP-MED Location 256
- CHAPTER 32 259
- Chapter 32 Static Route 261
- CHAPTER 33 262
- 33.2 Activating DiffServ 263
- CHAPTER 34 266
- 34.2 DHCP Configuration 267
- 34.3 DHCPv4 Status 268
- 34.4 DHCPv4 Relay 268
- 34.4.1.2 Sub-Option Format 269
- 192.168.1.100 277
- 172.16.10.100 277
- 34.6 DHCPv6 Relay 278
- CHAPTER 35 280
- Gratuitous-ARP 281
- ARP-Request 281
- 35.2 ARP Setup 282
- CHAPTER 36 284
- 36.2.1 Load Factory Default 285
- 36.2.2 Save Configuration 285
- 36.3 Firmware Upgrade 286
- 36.6 Tech-Support 288
- 36.7 Technical Reference 290
- 36.7.4 GUI-based FTP Clients 291
- 36.7.5 FTP Restrictions 292
- CHAPTER 37 293
- 37.3 Configuring SNMP 294
- 37.7 Technical Reference 303
- SNMP v3 and Security 304
- Supported MIBs 304
- SNMP Traps 304
- 37.7.2 Introduction to HTTPS 305
- 37.7.2.1 HTTPS Example 306
- 37.7.2.2 The Main Screen 309
- CHAPTER 38 311
- Chapter 38 Diagnostic 312
- CHAPTER 39 313
- 39.3 Syslog Server Setup 314
- CHAPTER 40 316
- 40.1.1 What You Can Do 317
- 40.4 Technical Reference 320
- CHAPTER 41 322
- Chapter 41 MAC Table 324
- CHAPTER 42 325
- CHAPTER 43 327
- CHAPTER 44 328
- CHAPTER 45 330
- Chapter 45 Neighbor Table 333
- Chapter 45 Neighbor Table 334
- CHAPTER 46 336
- 46.2 Switch Access and Login 337
- 46.3 Switch Configuration 339
- APPENDIX A 340
- Australia 345
- South Africa 345
- APPENDIX B 346
- Appendix B Common Services 347
- Appendix B Common Services 348
- APPENDIX C 349
- Global Address 350
- Unspecified Address 350
- Loopback Address 350
- Multicast Address 350
- Subnet Masking 351
- Interface ID 351
- Stateless Autoconfiguration 351
- Identity Association 352
- DHCP Relay Agent 352
- Prefix Delegation 353
- IPv6 Cache 353
- APPENDIX D 357
- ZyXEL Limited Warranty 358
- Safety Warnings 358
- CE Marking 358
- Appendix D Legal Information 359
- Numerics 360
- GS1920 Series User’s Guide368 368
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