222[SwitchA-Ten-GigabitEthernet1/0/1] port trunk permit vlan 1 2 3 101 201 301# Configure one-to-one VLAN mappings on Ten-GigabitEthernet 1/0/1 to map VLANs 1, 2, and3 to VLANs 101, 201, and 301, respectively.[SwitchA-Ten-GigabitEthernet1/0/1] vlan mapping 1 translated-vlan 101[SwitchA-Ten-GigabitEthernet1/0/1] vlan mapping 2 translated-vlan 201[SwitchA-Ten-GigabitEthernet1/0/1] vlan mapping 3 translated-vlan 301[SwitchA-Ten-GigabitEthernet1/0/1] quit# Configure the customer-side port Ten-GigabitEthernet 1/0/2 as a trunk port, and assign the portto all original VLANs and translated VLANs.[SwitchA] interface ten-gigabitethernet 1/0/2[SwitchA-Ten-GigabitEthernet1/0/2] port link-type trunk[SwitchA-Ten-GigabitEthernet1/0/2] port trunk permit vlan 1 2 3 102 202 302# Configure one-to-one VLAN mappings on Ten-GigabitEthernet 1/0/2 to map VLANs 1, 2, and3 to VLANs 102, 202, and 302, respectively.[SwitchA-Ten-GigabitEthernet1/0/2] vlan mapping 1 translated-vlan 102[SwitchA-Ten-GigabitEthernet1/0/2] vlan mapping 2 translated-vlan 202[SwitchA-Ten-GigabitEthernet1/0/2] vlan mapping 3 translated-vlan 302[SwitchA-Ten-GigabitEthernet1/0/2] quit# Configure the network-side port Ten-GigabitEthernet 1/0/3 as a trunk port, and assign the portto the translated VLANs.[SwitchA] interface ten-gigabitethernet 1/0/3[SwitchA-Ten-GigabitEthernet1/0/3] port link-type trunk[SwitchA-Ten-GigabitEthernet1/0/3] port trunk permit vlan 101 201 301 102 202 302[SwitchA-Ten-GigabitEthernet1/0/3] quit2. Configure Switch B in the same way Switch A is configured. (Details not shown.)3. Configure Switch C:# Enable DHCP snooping. system-view[SwitchC] dhcp snooping enable# Create the original VLANs and translated VLANs, and enable ARP detection for these VLANs.[SwitchC] vlan 101[SwitchC-vlan101] arp detection enable[SwitchC-vlan101] vlan 201[SwitchC-vlan201] arp detection enable[SwitchC-vlan201] vlan 301[SwitchC-vlan301] arp detection enable[SwitchC-vlan301] vlan 102[SwitchC-vlan102] arp detection enable[SwitchC-vlan102] vlan 202[SwitchC-vlan202] arp detection enable[SwitchC-vlan202] vlan 302[SwitchC-vlan302] arp detection enable[SwitchC-vlan302] vlan 103[SwitchC-vlan103] arp detection enable[SwitchC-vlan103] vlan 203[SwitchC-vlan203] arp detection enable[SwitchC-vlan203] vlan 303
