367
Task Command
Clear the ARP detection statistics. reset arp detection statistics [ interface interface-type interface-number ]
User validity check and ARP packet validity check
configuration example
Network requirements
As shown in Figure 113 , configure DHCP snooping on Switch B, and enable ARP detection in VLAN 10.
Switch B performs ARP packet validity check and user validity check based on static IP source guard
bindings and DHCP snooping entries for connected hosts.
Figure 113 Network diagram
Configuration procedure
1. Add all interfaces on Switch B to VLAN 10, and specify the IP address of VLAN-interface 10 on
Switch A. (Details not shown.)
2. Configure the DHCP server on Switch A, and configure DHCP address pool 0.
<SwitchA> system-view
[SwitchA] dhcp enable
[SwitchA] dhcp server ip-pool 0
[SwitchA-dhcp-pool-0] network 10.1.1.0 mask 255.255.255.0
3. Configure Host A (DHCP client) and Host B. (Details not shown.)
4. Configure Switch B:
# Enable DHCP snooping.
<SwitchB> system-view
[SwitchB] dhcp snooping enable
[SwitchB] interface ten-gigabitethernet 1/0/3
[SwitchB-Ten-GigabitEthernet1/0/3] dhcp snooping trust
[SwitchB-Ten-GigabitEthernet1/0/3] quit
Switch A
Switch B
Host A Host B
XGE1/0/3
Vlan-int10
10.1.1.1/24
Gateway
DHCP server
XGE1/0/1
XGE1/0/3
XGE1/0/2
DHCP client
VLAN 10
DHCP snooping
10.1.1.6
0001-0203-0607
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