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# Assign Ten-GigabitEthernet 1/1/5 to service loopback group 1.
[Switch] interface Ten-GigabitEthernet 1/1/5
[Switch-Ten-GigabitEthernet1/1/5] port service-loopback group 1
[Switch-Ten-GigabitEthernet1/1/5] quit
# Configure an ISATAP tunnel interface tunnel 0.
[Switch] interface tunnel 0 mode ipv6-ipv4 isatap
# Specify an EUI-64 IPv6 address for the tunnel interface tunnel 0.
[Switch-Tunnel0] ipv6 address 2001:: 64 eui-64
# Specify VLAN-interface 101 as the source interface of the tunnel interface.
[Switch-Tunnel0] source vlan-interface 101
# Disable RA suppression so that the ISATAP host can acquire information such as the address
prefix from the RA message advertised by the ISATAP switch.
[Switch-Tunnel0] undo ipv6 nd ra halt
[Switch-Tunnel0] quit
2. Configure the ISATAP host:
Configurations on the ISATAP host vary with operating systems. The following example is
performed on Windows XP:
# Install IPv6.
C:\>ipv6 install
# On a host running Windows XP, the ISATAP interface is typically interface 2. Display
information about the ISATAP interface.
C:\>ipv6 if 2
Interface 2: Automatic Tunneling Pseudo-Interface
Guid {48FCE3FC-EC30-E50E-F1A7-71172AEEE3AE}
does not use Neighbor Discovery
does not use Router Discovery
routing preference 1
EUI-64 embedded IPv4 address: 0.0.0.0
router link-layer address: 0.0.0.0
preferred link-local fe80::5efe:1.1.1.2, life infinite
link MTU 1280 (true link MTU 65515)
current hop limit 128
reachable time 42500ms (base 30000ms)
retransmission interval 1000ms
DAD transmits 0
default site prefix length 48
# Specify an IPv4 address for the ISATAP switch.
C:\>netsh interface ipv6 isatap set router 1.1.1.1
# Display information about the ISATAP interface.
C:\>ipv6 if 2
Interface 2: Automatic Tunneling Pseudo-Interface
Guid {48FCE3FC-EC30-E50E-F1A7-71172AEEE3AE}
does not use Neighbor Discovery
uses Router Discovery
routing preference 1
EUI-64 embedded IPv4 address: 1.1.1.2
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