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Configuration procedure
Before configuring a 6to4 tunnel, make sure Switch A and Switch B have the corresponding VLAN
interfaces created and can reach each other through IPv4.
1. Configure Switch A:
# Specify an IPv4 address for VLAN-interface 100.
<SwitchA> system-view
[SwitchA] interface vlan-interface 100
[SwitchA-Vlan-interface100] ip address 2.1.1.1 24
[SwitchA-Vlan-interface100] quit
# Specify a 6to4 address for VLAN-interface 101.
[SwitchA] interface vlan-interface 101
[SwitchA-Vlan-interface101] ipv6 address 2002:0201:0101:1::1/64
[SwitchA-Vlan-interface101] quit
# Create service loopback group 1 and specify its service type as tunnel.
[SwitchA] service-loopback group 1 type tunnel
# Assign Ten-GigabitEthernet 1/1/5 to service loopback group 1.
[SwitchA] interface Ten-GigabitEthernet 1/1/5
[SwitchA-Ten-GigabitEthernet1/1/5] port service-loopback group 1
[SwitchA-Ten-GigabitEthernet1/1/5] quit
# Create a 6to4 tunnel interface tunnel 0.
[SwitchA] interface tunnel 0 mode ipv6-ipv4 6to4
# Specify an IPv6 address for the tunnel interface.
[SwitchA-Tunnel0] ipv6 address 3001::1/64
# Specify the source interface as VLAN-interface 100 for the tunnel interface.
[SwitchA-Tunnel0] source vlan-interface 100
[SwitchA-Tunnel0] quit
# Configure a static route destined for 2002::/16 through the tunnel interface.
[SwitchA] ipv6 route-static 2002:: 16 tunnel 0
2. Configure Switch B:
# Specify an IPv4 address for VLAN-interface 100.
<SwitchB> system-view
[SwitchB] interface vlan-interface 100
[SwitchB-Vlan-interface100] ip address 5.1.1.1 24
[SwitchB-Vlan-interface100] quit
# Specify a 6to4 address for VLAN-interface 101.
[SwitchB] interface vlan-interface 101
[SwitchB-Vlan-interface101] ipv6 address 2002:0501:0101:1::1/64
[SwitchB-Vlan-interface101] quit
# Create service loopback group 1 and specify its service type as tunnel.
[SwitchB] service-loopback group 1 type tunnel
# Assign Ten-GigabitEthernet 1/1/5 to service loopback group 1.
[SwitchB] interface Ten-GigabitEthernet 1/1/5
[SwitchB-Ten-GigabitEthernet1/1/5] port service-loopback group 1
[SwitchB-Ten-GigabitEthernet1/1/5] quit
# Create a 6to4 tunnel interface tunnel 0.
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