250
[SwitchC-Ten-GigabitEthernet1/0/2] quit
# Configure the network-side port (Ten-GigabitEthernet 1/0/3) to use the original VLAN tags of
the many-to-one mappings to replace the VLAN tags of the packets destined for the user
network.
[SwitchC] interface ten-gigabitethernet 1/0/3
[SwitchC-Ten-GigabitEthernet1/0/3] vlan mapping nni
# Configure Ten-GigabitEthernet 1/0/3 as a trunk port.
[SwitchC-Ten-GigabitEthernet1/0/3] port link-type trunk
# Assign Ten-GigabitEthernet 1/0/3 to the translated VLANs.
[SwitchC-Ten-GigabitEthernet1/0/3] port trunk permit vlan 501 to 503
# Configure Ten-GigabitEthernet 1/0/3 as a DHCP snooping trusted and ARP trusted port.
[SwitchC-Ten-GigabitEthernet1/0/3] dhcp snooping trust
[SwitchC-Ten-GigabitEthernet1/0/3] arp detection trust
[SwitchC-Ten-GigabitEthernet1/0/3] quit
4. Configure Switch D:
# Create the translated VLANs.
<SwitchD> system-view
[SwitchD] vlan 501 to 503
# Configure Ten-GigabitEthernet 1/0/1 as a trunk port.
<SwitchD> system-view
[SwitchD] interface ten-gigabitethernet 1/0/1
[SwitchD-Ten-GigabitEthernet1/0/1] port link-type trunk
# Assign Ten-GigabitEthernet 1/0/1 to the translated VLANs.
[SwitchD-Ten-GigabitEthernet1/0/1] port trunk permit vlan 501 to 503
[SwitchD-Ten-GigabitEthernet1/0/1] quit
Verifying the configuration
# Verify VLAN mapping information on the wiring-closet switches, for example, Switch A.
[SwitchA] display vlan mapping
Interface Ten-GigabitEthernet1/0/1:
Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN
1 N/A 101 N/A
2 N/A 201 N/A
3 N/A 301 N/A
Interface Ten-GigabitEthernet1/0/2:
Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN
1 N/A 102 N/A
2 N/A 202 N/A
3 N/A 302 N/A
# Verify VLAN mapping information on Switch C.
[SwitchC] display vlan mapping
Interface Ten-GigabitEthernet1/0/1:
Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN
101-102 N/A 501 N/A
201-202 N/A 502 N/A
301-302 N/A 503 N/A
Interface Ten-GigabitEthernet1/0/2:
Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN
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