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4-3 DHCP Snooping
The section describes to configure the DHCP Snooping parameters of the switch. The DHCP
Snooping can prevent attackers from adding their own DHCP servers to the network.
4-3.1 Configuration
This section describes how to configure DHCP Snooping setting including：
Snooping Mode (Enabled and Disabled)
Port Mode Configuration (Trusted, Untrusted)
Web Interface
To configure a DHCP Snooping in the web interface:
1. Select “Enabled” in the Mode of DHCP Snooping Configuration.
2. Select “Trusted” of the specific port in the Mode of Port Mode Configuration.
3. Click Apply.
Figure 4-3.1: The DHCP Snooping Configuration
- GTL-5280 1
- INTRODUCTION 9
- GTL-5280 web help function: 12
- System Configuration 15
- 2-1.2 Configuration 17
- 2-1.3 CPU Load 18
- 2-2 Time 19
- 2-2.2 NTP 21
- 2-3.1 Users 22
- 2-3.2 Privitege Level 24
- 2-4.1 IPV4 26
- 2-4.2 IPV6 28
- 2-5 Syslog 29
- 2-5.2 Log 30
- 2-5.3 Detailed Log 31
- 2-6 SNMP 32
- 2-6.2 Communities 33
- 2-6.3 Users 34
- 2-6.4 Groups 36
- 2-6.5 Views 37
- 2-6.6 Access 39
- 2-6.7 Tarp 41
- Configuration 43
- 3-1.2 Port Description 45
- 3-1.3 Traffic Overview 46
- 3-1.4 Detailed Statistics 47
- Receive Error Counters 48
- Transmit Error Counters 48
- 3-1.5 Qos Statistics 49
- 3-1.6 SFP Information 50
- 3-2 ACL 52
- 3-2.2 Rate Limiters 54
- 3-2.3 Access Control List 55
- 3-2.4 ACL Status 58
- 3-3 Aggregation 60
- 3-3.2 LACP 62
- 3-4 Spanning Tree 69
- Basic Settings 70
- Advanced Settings 71
- 2-4.2 MSTI Mapping 72
- MSTI Mapping 73
- 3-4.3 MSTI Priorities 74
- 3-4.4 CIST Ports 75
- 3-4.5 MSTI Ports 77
- 3-4.6 Bridge Status 79
- 3-4.7 Port Status 80
- 3-4.8 Port Statistics 82
- 3-5 IGMP Snooping 83
- 3-5.2 VLAN Configuration 85
- 3-5.3 Port Group Filtering 87
- 3-5.4 Status 89
- 3-5.5 Group Infermation 91
- IGMP Group Table Columns 91
- 3-6 MLD Snooping 94
- 3-6.2 VLAN Configuration 97
- 3-6.3 Port Group Filtering 99
- 3-6.4 Status 100
- Web Interface 100
- 3-6.5 Group Infermation 102
- 3-6.6 IPv6 SSM Information 104
- 3-7 MVR 105
- 3-7.2 Groups Information 107
- 3-7.3 Statistics 108
- 3-8 LLDP 109
- LLDP Parameters 110
- LLDP Port Configuration 110
- 3-8.2 LLDP Neighbours 112
- 3-8.3 LLDP-MED Configuration 114
- Fast start repeat count 115
- Coordinates Location 115
- Civic Address Location 116
- Policies 117
- P) value (IETF RFC 2474) 117
- 3-8.4 LLDP-MED Neighbours 120
- 3-8.5 EEE 123
- 3-8.6 Port Statistics 125
- Local Counters 126
- 3- 9 Filtering Data Base 127
- MAC Table Learning 128
- 3- 9.2 Dynamic MAC Table 129
- Web Interface 129
- 3-10 VLAN 130
- 3-10.2 Ports 132
- Web Interface 132
- 3-10.4 Port Status 135
- 3-10.5 Private VLANs 137
- 3-10.5.1 Port Isolation 137
- 3-10.6 MAC-based VLAN 138
- 3-10.6.1 Configuration 138
- Web Interface 138
- 3-10.6.2 Status 140
- 3-10.7 Protocol -based VLAN 141
- 3-10.7.1 Protocol to Group 141
- 3-10.7.2 Group to VLAN 143
- 3-11 Voice VLAN 144
- 3-11.2 OUI 146
- 3-12 GARP 147
- 3-12.2 Statistics 149
- 3-13 GVRP 150
- 3-13.2 Statistics 152
- 3-14 QoS 153
- 3-14.2 Port Policing 155
- 3-14.3 Port Scheduler 157
- 3-14.4 Port Shaping 160
- 3-14.5 Port Tag Remarking 163
- 3-14.6 Port DSCP 165
- 3-14.7 DSCP-Based QoS 167
- 3-14.8 DSCP Translation 169
- 3-14.9 DSCP Classification 171
- : Edits the QCE 173
- 3-14.11 QCL Status 175
- 3-14.12 Storm Control 177
- 3-14.13 WRED 178
- 3-15 s-Flow Agent 180
- 3-15.2 Sampler 182
- 3-18 Loop Protection 184
- 3-18.2 Status 186
- 3-19 Easy Port 187
- 3-20 Mirroring 189
- Mirror Port Configuration 190
- 3-21 Trap Event Severity 191
- 3-23 UPnP 193
- Security 194
- 4-1.2 Static Table 196
- 4-1.3 Dynamic Table 197
- 4-2 ARP Inspection 198
- 4-2.2 Static Table 200
- 4-2.3 Dynamic Table 201
- 4-3 DHCP Snooping 202
- 4-3.2 Statistics 204
- 4-4 DHCP Relay 206
- 4-4.2 Statistics 208
- Client Statistics 208
- 4-5 NAS 210
- 4-5.2 Switch Status 217
- 4-5.3 Port Status 219
- Port State 219
- Port Counters 219
- Selected Counters 220
- Attached MAC Addresses 220
- VLAN ID 220
- 4-6 AAA 222
- 1. Check “Enabled” 222
- 4-6.2 Radius Overview 226
- RADIUS Accounting Servers 226
- 4-6.3 Radius Details 228
- 4-7 Port Security 229
- Port Configuration 230
- 4-7.2 Switch Status 232
- 4-7.3 Port Status 234
- 4-8 Access Management 235
- 4-8.2 Statistics 237
- 4-9 SSH 238
- 4-10 HTTPs 239
- 4-11 Auth Method 240
- Maintenance 241
- 5-2.1 Firmware Upgrade 242
- 5-2.2 Firmware Selection 243
- 5-3 Apply / Restore 245
- 5-4.1 Export Config 247
- 5-4.2 Import Config 248
- 5-5 Diagnostics 249
- 5-5.2 Ping6 250
- 5-5.3 VeriPHY 251
- Voice VLAN 264
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