D-Link DGS-510 Reference Manual page 163

DGS-1510 Series Gigabit Ethernet SmartPro Switch CLI Reference Guide
ip dhcp relay information option
no ip dhcp relay information option
Parameters
None.
Default
By default, Option 82 is not inserted.
Command Mode
Global Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
When DHCP Option 82 is enabled, the DHCP packet received from the client will be inserted with an
Option 82 field before being relayed to the server. The DHCP Option 82 contains two sub-options
respectively the circuit ID sub-option and remote ID sub-option.
Administrators can use the ip dhcp relay information option remote-id command to specify a user-
defined string for the remote ID sub-option.
Example
This example shows how to enable the insertion of Option 82 during the relay of DHCP request
packets.
Switch# configure terminal
Switch(config)# ip dhcp relay information option
Switch(config)#
17-7 ip dhcp relay information option-insert
This command is used to enable or disable the insertion of Option 82 for an interface during the relay
of DHCP request packets. Use the no form of this command to remove the configuration of the insert
function for the interface.
ip dhcp relay information option-insert [none]
no ip dhcp relay information option-insert [none]
Parameters
none
Default
None.
Command Mode
Interface Configuration Mode.
Command Default Level
Level: 12.
(Optional) Specifies to disable insertion of Option 82 in the relayed
packet.
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