92
Figure 38 Network diagram
Configuration procedure
# Enable DHCP snooping.
<RouterB> system-view
[RouterB] dhcp snooping enable
# Configure GigabitEthernet 2/0/1 as a trusted port.
[RouterB] interface gigabitethernet 2/0/1
[RouterB-GigabitEthernet2/0/1] dhcp snooping trust
[RouterB-GigabitEthernet2/0/1] quit
# Configure Option 82 on GigabitEthernet 2/0/2.
[RouterB] interface gigabitethernet 2/0/2
[RouterB-GigabitEthernet2/0/2] dhcp snooping information enable
[RouterB-GigabitEthernet2/0/2] dhcp snooping information strategy replace
[RouterB-GigabitEthernet2/0/2] dhcp snooping information circuit-id string company001
[RouterB-GigabitEthernet2/0/2] dhcp snooping information remote-id string device001
[RouterB-GigabitEthernet2/0/2] quit
# Configure Option 82 on GigabitEthernet 2/0/3.
[RouterB] interface gigabitethernet 2/0/3
[RouterB-GigabitEthernet2/0/3] dhcp snooping information enable
[RouterB-GigabitEthernet2/0/3] dhcp snooping information strategy replace
[RouterB-GigabitEthernet2/0/3] dhcp snooping information circuit-id verbose
node-identifier sysname format ascii
[RouterB-GigabitEthernet2/0/3] dhcp snooping information remote-id string device001
Verifying the configuration
# Display Option 82 configuration information on GigabitEthernet 2/0/2 and GigabitEthernet 2/0/3 on
the DHCP snooping device.
[RouterB] display dhcp snooping information
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