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Figure 120 Network diagram
Configuration procedure
1. Add all ports on Switch B to VLAN 10, and configure the IP address of VLAN-interface 10 on
Switch A. (Details not shown.)
2. Configure DHCP address pool 0 on Switch A as a DHCP server.
<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 as DHCP client, and Host B as user. (Details not shown.)
4. Configure Switch B:
# Enable DHCP snooping.
<SwitchB> system-view
[SwitchB] dhcp-snooping
[SwitchB] interface gigabitethernet 1/0/3
[SwitchB-GigabitEthernet1/0/3] dhcp-snooping trust
[SwitchB-GigabitEthernet1/0/3] quit
# Enable ARP detection for VLAN 10.
[SwitchB] vlan 10
[SwitchB-vlan10] arp detection enable
# Configure the upstream port as a trusted port (a port is an untrusted port by default).
[SwitchB-vlan10] interface gigabitethernet 1/0/3
[SwitchB-GigabitEthernet1/0/3] arp detection trust
[SwitchB-GigabitEthernet1/0/3] quit
# Configure a static IP source guard binding entry on interface GigabitEthernet 1/0/2.
[SwitchB] interface gigabitethernet 1/0/2
[SwitchB-GigabitEthernet1/0/2] ip source binding ip-address 10.1.1.6 mac-address
0001-0203-0607 vlan 10
[SwitchB-GigabitEthernet1/0/2] quit
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