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Configuration procedure
To enable authorized ARP:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
The following interface types are
supported:
• Layer 3 Ethernet interfaces.
• Layer 3 Ethernet subinterfaces.
• Layer 3 aggregate interfaces.
• Layer 3 aggregate subinterfaces.
• VLAN interfaces.
3. Enable authorized ARP on
the interface.
arp authorized enable
By default, authorized ARP is disabled.
Configuration example (on a DHCP server)
Network requirements
As shown in Figure 130, configure authorized ARP on Ten-GigabitEthernet 1/0/1 of Device A (a
DHCP server) to ensure user validity.
Figure 130 Network diagram
Configuration procedure
1. Configure Device A:
# Specify the IP address for Ten-GigabitEthernet 1/0/1.
<DeviceA> system-view
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] ip address 10.1.1.1 24
[DeviceA-Ten-GigabitEthernet1/0/1] quit
# Configure DHCP.
[DeviceA] dhcp enable
[DeviceA] dhcp server ip-pool 1
[DeviceA-dhcp-pool-1] network 10.1.1.0 mask 255.255.255.0
[DeviceA-dhcp-pool-1] quit
# Enter Layer 3 Ethernet interface view.
[DeviceA] interface ten-gigabitethernet 1/0/1
# Enable authorized ARP.
[DeviceA-Ten-GigabitEthernet1/0/1] arp authorized enable
[DeviceA-Ten-GigabitEthernet1/0/1] quit
2. Configure Device B:
<DeviceB> system-view
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