R0106-HP MSR Router Series Layer 3 - IP Services Configuration Guide(V7)

Figure 29 Network diagram

Configuration procedure

# Enable DHCP snooping.

<RouterB> system-view

[RouterB] dhcp snooping enable

# Configure GigabitEthernet 2/1/1 as a trusted port.

[RouterB] interface gigabitethernet 2/1/1

[RouterB-GigabitEthernet2/1/1] dhcp snooping trust

[RouterB-GigabitEthernet2/1/1] quit

# Configure Option 82 on GigabitEthernet 2/1/2.

[RouterB] interface gigabitethernet 2/1/2

[RouterB-GigabitEthernet2/1/2] dhcp snooping information enable

[RouterB-GigabitEthernet2/1/2] dhcp snooping information strategy replace

[RouterB-GigabitEthernet2/1/2] dhcp snooping information circuit-id string company001

[RouterB-GigabitEthernet2/1/2] dhcp snooping information remote-id string device001

[RouterB-GigabitEthernet2/1/2] quit

# Configure Option 82 on GigabitEthernet 2/1/3.

[RouterB] interface gigabitethernet 2/1/3

[RouterB-GigabitEthernet2/1/3] dhcp snooping information enable

[RouterB-GigabitEthernet2/1/3] dhcp snooping information strategy replace

[RouterB-GigabitEthernet2/1/3] dhcp snooping information circuit-id verbose

node-identifier sysname format ascii

[RouterB-GigabitEthernet2/1/3] dhcp snooping information remote-id string device001

Verifying the configuration

Use the display dhcp snooping information command to display Option 82 configuration information on

GigabitEthernet 2/1/2 and GigabitEthernet 2/1/3 on the DHCP snooping device.