dhcp-proxy enable

Function

The dhcp-proxy enable command enables DHCP proxy and changes the remote DHCP server IP address to the local gateway IP address.

The undo dhcp-proxy enable command disables DHCP proxy.

By default, DHCP proxy is enabled.

This command is supported only on the NetEngine 8000 F1A.

Format

dhcp-proxy enable

undo dhcp-proxy enable

Parameters

None

Views

BAS interface view (GE), BAS interface view (VE), BAS interface view (trunk)

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
dhcp	write

Usage Guidelines

Usage Scenario

To guarantee the security of the DHCP server, you need to run the dhcp-proxy enable command when the DHCP packet sent from the device to a user does not contain the DHCP server IP address.

Configuration Impact

After DHCP proxy is enabled on the BAS interface, when a DHCP packet is received on the BAS interface and the BAS remote address pool is used, the server IP address in the option54 of the DHCP packet sent from the device to the user is the device IP address.

Precautions

In VS mode, this command is supported only by the admin VS.

Currently, DHCP proxy is used only for the BAS remote address pool of the BAS. The configuration modification does not take effect on online users.

DHCP proxy can also be used for Layer 2 users or Layer 2 leased line users.

Example

# Enable DHCP proxy on the BAS interface, GE 0/1/1.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet0/1/1
[~HUAWEI-GigabitEthernet0/1/1] bas
[~HUAWEI-GigabitEthernet0/1/1-bas] access-type layer2-subscriber
[*HUAWEI-GigabitEthernet0/1/1-bas] commit
[~HUAWEI-GigabitEthernet0/1/1-bas] dhcp-proxy enable