User 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
- EC Declaration of Conformity
User’s Manual of LRP-822CS/LRP-1622CS
245
The page includes the following fields:
Object Description
DHCP Snooping
Indicates the DHCP snooping mode operation. Possible modes are:
Enabled: Enable DHCP snooping mode operation.
When DHCP snooping mode operation is enabled, the request
allowed reply packets from trusted ports.
DHCP messages will be forwarded to trusted ports and only
Disabled: Disable DHCP snooping mode operation.
Buttons
: Click to apply changes.
Figure 4-9-34 DHCP Snooping Information Page Screenshot
he page includes the following fields:
T
Object Description
DHCP Snooping
Display the current DHCP snooping status
4.9.7.3 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 snoo
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.
ping is globally re-enabled.