Dhcp Snooping Vlan Setting - Planet WGSW-28040 User Manual

Object
• DHCP Snooping
• IP Source Guard

4.10.4 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 screen in
Description
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.
Configures the switch to filter inbound traffic based source IP address, or source
IP address and corresponding MAC address.
 None Disables IP source guard filtering on the Managed Switch.
 SIP Only Enables traffic filtering based on IP addresses stored in the
binding table.
 SIP and SMAC Enables traffic filtering based on IP addresses and
corresponding MAC addresses stored in the binding table.
Figure 4-10-2
Figure 4-10-2 DHCP Snooping VLAN Setting page screenshot
User's Manual of WGSW-28040 / 28040P / 28040P4
and Figure 4-10-3 appears.
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