ip dhcp-relay (for a VLAN)

Syntax

• default ip dhcp-relay

• default ip dhcp-relay broadcast

• default ip dhcp-relay circuitId

• default ip dhcp-relay fwd-path {A.B.C.D}

• default ip dhcp-relay fwd-path {A.B.C.D} mode

• default ip dhcp-relay fwd-path {A.B.C.D} vrid <1-255>

• default ip dhcp-relay max-hop

• default ip dhcp-relay min-sec

• default ip dhcp-relay mode

• default ip dhcp-relay remoteId

• default ip dhcp-relay trusted

• ip dhcp-relay

• ip dhcp-relay broadcast

• ip dhcp-relay circuitId

• ip dhcp-relay clear-counter

• ip dhcp-relay fwd-path {A.B.C.D}

• ip dhcp-relay fwd-path {A.B.C.D} disable

• ip dhcp-relay fwd-path {A.B.C.D} enable

• ip dhcp-relay fwd-path {A.B.C.D} mode bootp

• ip dhcp-relay fwd-path {A.B.C.D} mode bootp_dhcp

• ip dhcp-relay fwd-path {A.B.C.D} mode dhcp

• ip dhcp-relay fwd-path {A.B.C.D} vrid <1-255>

• ip dhcp-relay max-hop <1-16>

• ip dhcp-relay min-sec <0-65535>

• ip dhcp-relay mode { bootp | dhcp | bootp_dhcp }

• ip dhcp-relay remoteId

• ip dhcp-relay trusted

• no ip dhcp-relay

• no ip dhcp-relay broadcast

• no ip dhcp-relay circuitId

• no ip dhcp-relay fwd-path {A.B.C.D}

• no ip dhcp-relay fwd-path {A.B.C.D} vrid <1-255>

• no ip dhcp-relay remoteId

• no ip dhcp-relay trusted

Command Parameters

{A.B.C.D}

Creates a forwarding path to the DHCP server with a mode and a state. A.B.C.D is the IP address of the server. The default IP address of the relay is the address of the interface.

Tip

If the relay is a Virtual Router configured on this interface, you must set the vrid.

broadcast

Enables the device to send the server reply as a broadcast to the end station. After you disable this variable, the device sends the server reply as a unicast to the end station.

circuitId

Enables the device to insert the Option 82 Circuit ID into the packets sent to the server (enables DHCP Option 82).

clear-counter

Clears the dhcp-relay counter.

max-hop <1-16>

Configures the maximum number of hops before a BootP/DHCP packet is discarded (1-16). The default is 4.

min-sec <0-65535>

Configures the minimum seconds count for DHCP. If the secs field in the BootP/DHCP packet header is greater than this value, the device relays or forwards the packet; otherwise, the packet is dropped (0- 65535). The default is 0 seconds.

mode <bootp|dhcp|bootp_dhcp>

Configures DHCP mode to forward BootP messages only, DHCP messages only, or both. The default is both.

remoteId

Enables the device to insert the Option 82 Remote ID into the packets sent to the server (enables DHCP Option 82).

trusted

Configures the circuit as trusted in an Option 82 context.

Default

None

Command Mode

VLAN Interface Configuration