H3C Technologies H3C S12500-X Series Switches - Manual (Page 235)

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Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Layer 3 Ethernet interface
view.
interface interface-type
interface-number
N/A
3. Enable authorized ARP on the
interface.
arp authorized enable
By default, authorized ARP is
disabled.
308B
Configuration example (on a DHCP server)
532B
Network requirements
Configure authorized ARP on Ten-GigabitEthernet 1/0/1 of Switch A (a DHCP server) to ensure user
validity.
Figure 70 Network diagram
533B
Configuration procedure
1. Configure Switch A:
# Specify the IP address for Ten-GigabitEthernet 1/0/1.
system-view
[SwitchA] interface ten-gigabitethernet 1/0/1
[SwitchA-Ten-GigabitEthernet1/0/1] ip address 10.1.1.1 24
[SwitchA-Ten-GigabitEthernet1/0/1] quit
# Configure DHCP.
[SwitchA] dhcp enable
[SwitchA] dhcp server ip-pool 1
[SwitchA-dhcp-pool-1] network 10.1.1.0 mask 255.255.255.0
[SwitchA-dhcp-pool-1] quit
# Enter Layer 3 Ethernet interface view.
[SwitchA] interface ten-gigabitethernet 1/0/1
# Enable authorized ARP.
[SwitchA-Ten-GigabitEthernet1/0/1] arp authorized enable
[SwitchA-Ten-GigabitEthernet1/0/1] quit
2. Configure Switch B:
system-view
[SwitchB] interface ten-gigabitethernet 1/0/1
[SwitchB-Ten-GigabitEthernet1/0/1] ip address dhcp-alloc
[SwitchB-Ten-GigabitEthernet1/0/1] quit
3. After Switch B obtains an IP address from Switch A, display the authorized ARP entry information
on Switch A.
[SwitchA] display arp all