Option 82 Configuration Example - HP 5920 Series Configuration Manual

[SwitchB-Ten-GigabitEthernet1/0/2] dhcp snooping binding record
[SwitchB-Ten-GigabitEthernet1/0/2] quit
Verifying the configuration
After the preceding configuration is complete, the DHCP client can obtain an IP address and other
configuration parameters only from the authorized DHCP server. You can view the DHCP snooping entry
recorded for the client with the display dhcp snooping binding command.

Option 82 configuration example

Network requirements
As shown in
• Configure the handling strategy for DHCP requests containing Option 82 as replace.
On Ten-GigabitEthernet 1/0/2, configure the padding content for the circuit ID sub-option as
•
company001 and for the remote ID sub-option as device001.
On Ten-GigabitEthernet 1/0/3, configure the padding format as verbose, access node identifier
•
as sysname, and code type as ascii for Option 82.
Figure 28 Network diagram
Configuration procedure
# Enable DHCP snooping.
<SwitchB> system-view
[SwitchB] dhcp snooping enable
# Configure Ten-GigabitEthernet 1/0/1 as a trusted port.
[SwitchB] interface Ten-GigabitEthernet 1/0/1
[SwitchB-Ten-GigabitEthernet1/0/1] dhcp snooping trust
[SwitchB-Ten-GigabitEthernet1/0/1] quit
# Configure Option 82 on Ten-GigabitEthernet 1/0/2.
[SwitchB] interface Ten-GigabitEthernet 1/0/2
[SwitchB-Ten-GigabitEthernet1/0/2] dhcp snooping information enable
[SwitchB-Ten-GigabitEthernet1/0/2] dhcp snooping information strategy replace
[SwitchB-Ten-GigabitEthernet1/0/2] dhcp snooping information circuit-id string
company001
[SwitchB-Ten-GigabitEthernet1/0/2] dhcp snooping information remote-id string device001
Figure 28, enable DHCP snooping and configure Option 82 on Switch B as follows:
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