339
User validity check and ARP packet validity check
configuration example
Network requirements
As shown in Figure 114 , configure Switch B to perform ARP packet validity check and user validity check
based on static IP source guard binding entries and DHCP snooping entries for connected hosts.
Figure 114 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
# Enable recording of client information in DHCP snooping entries on Ten-GigabitEthernet 1/0/1.
[SwitchB] interface ten-gigabitethernet 1/0/1
[SwitchB-Ten-GigabitEthernet1/0/1] dhcp snooping binding record
[SwitchB-Ten-GigabitEthernet1/0/1] quit
# Enable ARP detection for VLAN 10.
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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