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
The page includes the following fields:
Object Description
Access Profile
Display the current access profile
Delete
Click to delete access profile entry
4.9.7 DHCP Snooping
4.9.7.1 DHCP Snooping Overview
The addresses assigned to DHCP clients on unsecure ports can be carefully controlled using the dynamic bindings registered
with DHCP Snooping. DHCP snooping allows a switch to protect a network from rogue DHCP servers or other devices which
send port-related information to a DHCP server. This information can be useful in tracking an IP address back to a physical port.
Command Usage
Network traffic may be disrupted when malicious DHCP messages are received from an outside source. DHCP snooping is
used to filter DHCP messages received on a non-secure interface from outside the network or firewall. When DHCP
snooping is enabled globally and enabled on a VLAN interface, DHCP messages received on an untrusted interface from
a device not listed in the DHCP snooping table will be dropped.
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