User's Manual
Table Of Contents
- 1. INTRODUCTION
- 2. INSTALLATION
- 3. SWITCH MANAGEMENT
- 4. WEB CONFIGURATION
- 4.1 Main Web Page
- 4.2 System
- 4.3 Port Management
- 4.4 Link Aggregation
- 4.5 VLAN
- 4.5.1 VLAN Overview
- 4.5.2 IEEE 802.1Q VLAN
- 4.5.3 Management VLAN
- 4.5.4 Create VLAN
- 4.5.5 Interface Settings
- 4.5.6 Port to VLAN
- 4.5.7 Port VLAN Membership
- 4.5.8 Protocol VLAN Group Setting
- 4.5.9 Protocol VLAN Port Setting
- 4.5.10 GVRP Setting
- 4.5.11 GVRP Port Setting
- 4.5.12 GVRP VLAN
- 4.5.13 GVRP Statistics
- 4.5.14 VLAN setting example:
- 4.6 Spanning Tree Protocol
- 4.7 Multicast
- 4.8 Quality of Service
- 4.9 Security
- 4.10 ACL
- 4.11 MAC Address Table
- 4.12 LLDP
- 4.13 Diagnostics
- 4.14 RMON
- 4.15 Power over Ethernet
- 4.16 Maintenance
- 5. SWITCH OPERATION
- 6. TROUBLESHOOTING
- APPENDIX A Switch's RJ45 Pin Assignments
User’s Manual of GS-4210 UPoE Series
4.9.7.3 DHCP Snooping VLAN Setting
Command Usage
When DHCP snooping is enabled globally on the switch, and enabled on the specified VLAN, DHCP packet filtering will be
performed on any untrusted ports within the VLAN.
When the DHCP snooping is globally disabled, DHCP snooping can still be configured for specific VLANs, but the changes
will not take effect until DHCP snooping is globally re-enabled.
When DHCP snooping is globally enabled, and DHCP snooping is then disabled on a VLAN, all dynamic bindings learned for
this VLAN are removed from the binding table.
The DHCP Snooping VLAN Setting screens in Figure 4-9-35 & Figure 4-9-36 appear.
Figure 4-9-35 DHCP Snooping VLAN Setting Page Screenshot
The page includes the following fields:
Object Description
VLAN List
Indicates the ID of this particular VLAN.
Status
Indicates the DHCP snooping mode operation. Possible modes are:
Enabled: Enable DHCP snooping mode operation.
When enable DHCP snooping mode operation, the request
DHCP messages will be forwarded to trusted ports and only
allowed reply packets from trusted ports.
Disabled: Disable DHCP snooping mode operation.
Buttons
: Click to apply changes.
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