R3303-HP HSR6800 Routers Layer 3 - IP Services Configuration Guide

75
Ste
p
Command Remarks
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Enable DHCP snooping to
support Option 82.
dhcp-snooping information enable Disabled by default.
4. Configure the handling
strategy for requests
containing Option 82.
dhcp-snooping information strategy
{ append | drop | keep | replace }
Optional.
replace by default.
5. Configure Option 82 in
the non-user-defined
padding format.
• Configure the padding format
for Option 82:
dhcp-snooping information
format { normal | private
private | standard |verbose
[ node-identifier { mac |
sysname | user-defined
node-identifier } ] }
• Configure the code type for the
circuit ID sub-option:
dhcp-snooping information
circuit-id format-type { ascii |
hex }
• Configure the code type for the
remote ID sub-option:
dhcp-snooping information
remote-id format-type { ascii |
hex }
• Enable sub-option 9:
dhcp-snooping information
[ vlan vlan-id ] sub-option
sub-option-code
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.
• Sub-option 9 is not enabled.
The private padding format supports
only the hex code type.
The remote ID sub-option
configuration and the circuit ID
sub-option code type configuration
apply to non-user-defined Option 82
only.
For sub-option 9 configuration, when
append strategy is adopted, the
sysname and the primary IP address of
the Loopback0 interface are padded.
When some other strategy is adopted,
only the sysname is padded.
6. Configure user-defined
Option 82.
• Configure the padding content
for the circuit ID sub-option:
dhcp-snooping information
[ vlan vlan-id ] circuit-id string
circuit-id
• Configure the padding content
for the remote ID sub-option:
dhcp-snooping information
[ vlan vlan-id ] remote-id string
{ remote-id | sysname }
• Configure the padding content
for the sub-option 9:
dhcp-snooping information
[ vlan vlan-id ] sub-option
sub-option-code [ string
user-string&<1-8> ]
Optional.
By default:
• The padding content for the circuit
ID sub-option depends on the
padding format of Option 82.
• The padding content for the
remote ID sub-option depends on
the padding format of Option 82.
• Sub-option 9 is not padded.