H3C Technologies H3C S12500-X Series Switches - Manual (Page 236)

224
Type: S-Static D-Dynamic O-Openflow M-Multiport I-Invalid
IP Address MAC Address VLAN Interface Aging Type
10.1.1.2 0012-3f86-e94c N/A XGE1/0/1 20 D
The output shows that IP address 10.1.1.2 has been assigned to Switch B.
Switch B must use the IP address and MAC address in the authorized ARP entry to communicate
with Switch A. Otherwise, the communication fails. Thus user validity is ensured.
309B
Configuration example (on a DHCP relay agent)
534B
Network requirements
Configure authorized ARP on Ten-GigabitEthernet 1/0/2 of Switch B (a DHCP relay agent) to ensure
user validity.
Figure 71 Network diagram
535B
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 10.10.1.0 mask 255.255.255.0
[SwitchA-dhcp-pool-1] gateway-list 10.10.1.1
[SwitchA-dhcp-pool-1] quit
[SwitchA] ip route-static 10.10.1.0 24 10.1.1.2
2. Configure Switch B:
# Enable DHCP.
system-view
[SwitchB] dhcp enable
# Specify the IP addresses of Ten-GigabitEthernet 1/0/1 and Ten-GigabitEthernet 1/0/2.
[SwitchB] interface ten-gigabitethernet 1/0/1
[SwitchB-Ten-GigabitEthernet1/0/1] ip address 10.1.1.2 24