7-8
To do…
Use the command…
Remarks
Configure the DHCP relay agent to send a
DHCP-RELEASE request
dhcp relay release ip
client-ip
Required
Configuring the DHCP Relay Agent to Support Option 82
Prerequisites
You need to complete the following tasks before configuring the DHCP relay agent to support Option
82.
z
Enabling DHCP
z
Enabling the DHCP relay agent on the specified interface
z
Correlating a DHCP server group with relay agent interfaces
Configuring the DHCP relay agent to support Option 82
Follow these steps to configure the DHCP relay agent to support Option 82:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter interface view
interface
interface-type
interface-number
—
Enable the relay agent to support Option
82
dhcp relay information
enable
Required
Disabled by default.
Configure the handling strategy for
requesting messages containing Option
82
dhcp relay information
strategy
{
drop
|
keep
|
replace
}
Optional
replace
by default.
Configure the
padding format for
Option 82
dhcp relay information
format
{
normal
|
verbose
[
node-identifier
{
mac
|
sysname
|
user-defined
node-identifier
} ] }
Optional
normal
by default.
Configure
non-user-defined
Option 82
Configure the code
type for the circuit
ID sub-option
dhcp relay information
circuit-id format-type
{
ascii
|
hex
}
Optional
By default, the code type
depends on the padding format
of Option 82. Each field has its
own code type.
The code type configuration
applies to non-user-defined
Option 82 only.