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3 vlan setting – PLANET GS-4210-24P2S User Manual

Page 208

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User’s Manual of GS-4210-24P2S

The page includes the following fields:

Object

Description

DHCP Snooping

Indicates the DHCP snooping mode operation. Default mode is Disabled and

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.

Button

: Click to apply changes.

Figure 4-9-15:

DHCP Snooping Information Page Screenshot

The page includes the following fields:

Object

Description

Display the current DHCP snooping status.

DHCP Snooping

4.9.3.3 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 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 4-9-16

&

Figure 4-9-17

appear.

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