R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

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Ste
p
Command Remarks
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 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 remote ID sub-option
configuration and the circuit ID
sub-option configuration 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.
NOTE:
• To support Option 82, perform related configuration on both the DHCP server and relay agent. See
"Configuring DHCP server" fo
r DHCP server configuration of this kind.
• If the handling strategy of the DHCP relay agent is configured as replace, you need to configure a
padding format for Option 82. If the handling strategy is keep or drop, you need not configure any
padding format.
• If sub-option 1 (node identifier) of Option 82 is padded with the device name (sysname) of a node, the
device name must contain no spaces. Otherwise, the DHCP relay agent will drop the message.