H3C Technologies H3C S12500 Series Switches - Manual (Page 80)

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• On GigabitEthernet 3/0/3, configure the padding format as verbose, access node identifier as
sysname, and code type as ascii for Option 82.
Figure 26 Network diagram
351B
Configuration procedure
# Enable DHCP snooping.
system-view
[SwitchB] dhcp snooping enable
# Configure GigabitEthernet 3/0/1 as a trusted port.
[SwitchB] interface GigabitEthernet 3/0/1
[SwitchB-GigabitEthernet3/0/1] dhcp snooping trust
[SwitchB-GigabitEthernet3/0/1] quit
# Configure Option 82 on GigabitEthernet 3/0/2.
[SwitchB] interface GigabitEthernet3/0/2
[SwitchB-GigabitEthernet3/0/2] dhcp snooping information enable
[SwitchB-GigabitEthernet3/0/2] dhcp snooping information strategy replace
[SwitchB-GigabitEthernet3/0/2] dhcp snooping information circuit-id string company001
[SwitchB-GigabitEthernet3/0/2] dhcp snooping information remote-id string device001
[SwitchB-GigabitEthernet3/0/2] quit
# Configure Option 82 on GigabitEthernet 3/0/3.
[SwitchB] interface GigabitEthernet3/0/3
[SwitchB-GigabitEthernet3/0/3] dhcp snooping information enable
[SwitchB-GigabitEthernet3/0/3] dhcp snooping information strategy replace
[SwitchB-GigabitEthernet3/0/3] dhcp snooping information circuit-id verbose
node-identifier sysname format ascii
[SwitchB-GigabitEthernet3/0/3] dhcp snooping information remote-id string device001
352B
Verifying the configuration
Use the display dhcp snooping information command to display Option 82 configuration information on
GigabitEthernet 3/0
/2 and GigabitEthernet 3/0/3 on the DHCP snooping device.