129 
Syntax 
ip arp inspection trust 
no ip arp inspection trust 
Command Mode 
Interface Configuration Mode (interface gigabitEthernet / interface range 
gigabitEthernet) 
Privilege Requirement 
Only Admin, Operator and Power User level users have access to these 
commands. 
Example 
Configure the Gigabit Ethernet ports 1/0/2-5 as the Trusted Port: 
T2600G-28TS(config)#interface range gigabitEthernet 1/0/2-5 
T2600G-28TS(config-if-range)#ip arp inspection trust 
19.3 ip arp inspection(interface) 
Description 
The ip arp inspection command is used to enable the ARP Defend function. To 
disable the ARP detection function, please use no ip arp inspection command. 
ARP Attack flood produces lots of ARP Packets, which will occupy the 
bandwidth and slow the network speed extremely. With the ARP Defend 
enabled, the switch can terminate receiving the ARP packets for 300 seconds 
when the transmission speed of the legal ARP packet on the port exceeds the 
defined value so as to avoid ARP Attack flood. 
Syntax 
ip arp inspection 
no ip arp inspection 
Command Mode 
Interface Configuration Mode (interface gigabitEthernet / interface range 
gigabitEthernet) 
Privilege Requirement 
Only Admin, Operator and Power User level users have access to these 
commands.