H3C Technologies H3C S5560 Series Switches User Manual

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[SwitchA-GigabitEthernet1/0/1] port link-type trunk

[SwitchA-GigabitEthernet1/0/1] port trunk permit vlan 1 2 3 101 201 301

# Configure one-to-one VLAN mappings on GigabitEthernet 1/0/1 to map VLANs 1, 2, and 3 to

VLANs 101, 201, and 301, respectively.

[SwitchA-GigabitEthernet1/0/1] vlan mapping 1 translated-vlan 101

[SwitchA-GigabitEthernet1/0/1] vlan mapping 2 translated-vlan 201

[SwitchA-GigabitEthernet1/0/1] vlan mapping 3 translated-vlan 301

[SwitchA-GigabitEthernet1/0/1] quit

# Configure the customer-side port GigabitEthernet 1/0/2 as a trunk port, and assign the port to
all original VLANs and translated VLANs.

[SwitchA] interface gigabitethernet 1/0/2

[SwitchA-GigabitEthernet1/0/2] port link-type trunk

[SwitchA-GigabitEthernet1/0/2] port trunk permit vlan 1 2 3 102 202 302

# Configure one-to-one VLAN mappings on GigabitEthernet 1/0/2 to map VLANs 1, 2, and 3 to
VLANs 102, 202, and 302, respectively.

[SwitchA-GigabitEthernet1/0/2] vlan mapping 1 translated-vlan 102

[SwitchA-GigabitEthernet1/0/2] vlan mapping 2 translated-vlan 202

[SwitchA-GigabitEthernet1/0/2] vlan mapping 3 translated-vlan 302

[SwitchA-GigabitEthernet1/0/2] quit

# Configure the network-side port GigabitEthernet 1/0/3 as a trunk port, and assign the port to
the translated VLANs.

[SwitchA] interface gigabitethernet 1/0/3

[SwitchA-GigabitEthernet1/0/3] port link-type trunk

[SwitchA-GigabitEthernet1/0/3] port trunk permit vlan 101 201 301 102 202 302

[SwitchA-GigabitEthernet1/0/3] quit

Configure Switch B in the same way Switch A is configured. (Details not shown.)

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

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