H3C Technologies H3C S12500 Series Switches - Manual (Page 79)

65
Configuration procedure
To configure the DHCP relay agent to support Option 82:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view. interface interface-type interface-number N/A
3. Enable the relay
agent to support
Option 82.
dhcp relay information enable Disabled by default.
4. Configure the
handling strategy for
requesting messages
containing Option
82.
dhcp relay information strategy { drop | keep
| replace } Optional.
replace by default.
5. Configure
non-user-defined
Option 82.
• Configure the padding format for Option
82:
dhcp relay information format { normal |
verbose [ node-identifier { mac | sysname
| user-defined node-identifier } ] }
• Configure the code type for the circuit ID
sub-option:
dhcp relay information circuit-id
format-type { ascii | hex }
• Configure the code type for the remote ID
sub-option:
dhcp relay information remote-id
format-type { ascii | hex }
Optional.
By default:
• The padding format for
Option 82 is normal.
• The code type for the circuit
ID sub-option depends on
the padding format of
Option 82. Each field has its
own code type.
• The code type for the remote
ID sub-option is hex.
The code type configuration for
the circuit ID sub-option and for
the remote ID sub-option apply
to non-user-defined Option 82
only.
6. Configure
user-defined Option
82.
• Configure the padding content for the circuit
ID sub-option:
dhcp relay information circuit-id string
circuit-id
• Configure the padding content for the
remote ID sub-option:
dhcp relay information remote-id string
{ remote-id | sysname }
Optional.
By default, the padding content
depends on the padding format
of Option 82.
Displaying and maintaining the DHCP relay agent
Task Command Remarks
Display information about DHCP server
groups correlated to a specific or all
interfaces.
display dhcp relay { all | interface
interface-type interface-number } [ |
{ begin | exclude | include }
regular-expression ]
Available in any view.