Dhcp Relay Agent Option 82 Support Configuration Example - HP 10500 Series Configuration Manual

Configuration procedure
# Specify IP addresses for the interfaces. (Details not shown.)
# Enable DHCP.
<SwitchA> system-view
[SwitchA] dhcp enable
# Add DHCP server 10.1.1.1 into DHCP server group 1.
[SwitchA] dhcp relay server-group 1 ip 10.1.1.1
# Enable the DHCP relay agent on VLAN-interface 1.
[SwitchA] interface vlan-interface 1
[SwitchA-Vlan-interface1] dhcp select relay
# Correlate VLAN-interface 1 to DHCP server group 1.
[SwitchA-Vlan-interface1] dhcp relay server-select 1
After the preceding configuration is complete, DHCP clients can obtain IP addresses and other network
parameters from the DHCP server through the DHCP relay agent. Use the display dhcp relay statistics
command to view statistics of DHCP packets forwarded by DHCP relay agents. After you enable address
check of the DHCP relay agents with the dhcp relay address-check enable command, use the display
dhcp relay security command to view bindings of DHCP relay agents

DHCP relay agent Option 82 support configuration example

Network requirements
As shown in
forwarding them to the DHCP server (Switch B).
The circuit ID sub-option is company001.
•
The remote ID sub-option is device001.
•
To use Option 82, enable the DHCP server to handle Option 82.
Configuration procedure
# Specify IP addresses for the interfaces. (Details not shown.)
# Enable DHCP.
<SwitchA> system-view
[SwitchA] dhcp enable
# Add DHCP server 10.1.1.1 into DHCP server group 1.
[SwitchA] dhcp relay server-group 1 ip 10.1.1.1
# Enable the DHCP relay agent on VLAN-interface 1.
[SwitchA] interface vlan-interface 1
[SwitchA-Vlan-interface1] dhcp select relay
# Correlate VLAN-interface 1 to DHCP server group 1.
[SwitchA-Vlan-interface1] dhcp relay server-select 1
# Enable the DHCP relay agent to support Option 82, and perform Option 82-related configurations.
[SwitchA-Vlan-interface1] dhcp relay information enable
[SwitchA-Vlan-interface1] dhcp relay information strategy replace
[SwitchA-Vlan-interface1] dhcp relay information circuit-id string company001
Figure 31, the DHCP relay agent (Switch A) replaces Option 82 in DHCP requests before
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