H3C S9500 Series Operation Manual page 99

Operation Manual – DHCP
H3C S9500 Series Routing Switches
II. Enabling Option 82 support on DHCP relay agent
Follow these steps to enable Option 82 support on the DHCP relay agent enabled
VLAN interface in VLAN interface view:
Enter system view
Create a VLAN interface
and enter VLAN interface
view
Enable Option 82 support
on the DHCP relay agent
Configure the strategy for
the DHCP relay agent to
process the request
packets that carry Option
82
Configure the Option 82
format
Configure the user
identifier of Option 82
when it is in fixed network
mode
Follow these steps to enable Option 82 support on DHCP relay agent enabled VLAN
interfaces in system view:
Enter system view
Enable Option 82 support
on DHCP relay agents
To do...
system-view
interface vlan-interface
vlan-id
dhcp relay information
enable
dhcp relay information
strategy { drop | keep |
replace }
dhcp relay information
format { normal |
verbose }
dhcp relay information
format verbose
node-identifier { mac |
sysname | user-defined
string <1-50> }
To do...
system-view
dhcp relay information enable
{ interface vlan-interface vlan-id [ to
vlan-interface vlan-id ] | all }
Chapter 3 DHCP Relay Agent Configuration
Use the command...
Use the command...
3-14
Remarks
—
Required
The corresponding VLAN
must exist.
Required
This feature is disabled by
default.
Optional
By default, the DHCP
relay agent adopts the
strategy replace to
process the request
packets that carry Option
82. That is, the DHCP
relay replaces the original
Option 82 in the packets
with its own Option 82.
Optional
The format of Option 82 is
normal by default.
Optional
The user identifier of
DHCP Relay Option 82 is
the system bridge MAC
address by default.
Remarks
—
Optional
Disabled by
default.