Use the following procedure to enable or disable DHCP snooping on the VLAN.
| Attention You must enable DHCP snooping separately for each Vlan ID. |
| Attention If you disable DHCP snooping on a VLAN, the switch forwards DHCP reply packets to all applicable ports, whether the port is trusted or untrusted. |
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| Step | Action |
|---|---|
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| 1 |
From the Device Physical View, select a port. |
| 2 |
From the navigation tree, double-click Security. |
| 3 |
In the Security tree, double-click DHCP Snooping. |
| 4 |
In the work area, click the DHCP Snooping-VLAN tab. |
| 5 |
To select a VLAN to edit, click the VLAN ID. |
| 6 |
In the VLAN row, double-click the cell in the DhcpSnoopingEnabled column. |
| 7 |
Select a value from the list—true to enable DHCP snooping for the VLAN, or false to disable DHCP snooping for the VLAN. |
| 8 |
In the VLAN row, double-click the cell in the VlanOtion82Enabled column. |
| 9 |
Select a value from the list—true to enable DHCP snooping with Option 82 for the VLAN, or false to disable DHCP snooping with Option 82 for the VLAN. |
| 10 |
On the toolbar, click Apply. |
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Use the data in the following table to configure DHCP snooping on a VLAN.
| Variable | Value |
|---|---|
| VlanId | Indicates the VlanId on the VLAN. |
| DhcpSnoopingEnabled | Enables or disables DHCP snooping. |
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VlanOption82Enabled |
Enables or disables DHCP Snooping option 82 for the VLAN. |