■

■R3_3640A
conf t
!
ipv6 unicast-routing
!
interface Tunnel1
ipv6 unnumbered Loopback0
tunnel source fa0/0
tunnel mode ipv6ip 6to4
!
interface Loopback0
ipv6 address 2002:c0a8:0101:1::1/64
!
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
no shut
!
ipv6 route 2002::/16 tunnel1
!
end

■R4_3640
conf t
!
ipv6 unicast-routing
!
interface Tunnel1
ipv6 unnumbered Loopback0
tunnel source fa0/0
tunnel mode ipv6ip 6to4
!
interface Loopback0
ipv6 address 2002:c0a8:0102:1::2/64
!
interface FastEthernet0/0
ip address 192.168.1.2 255.255.255.0
no shut
!
ipv6 route 2002::/16 tunnel1
!
end

■R3のルーティングテーブルを確認する
R3_3640A#sh ipv6 route
IPv6 Routing Table - 5 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
S 2002::/16 [1/0]
via ::, Tunnel1
C 2002:C0A8:101:1::/64 [0/0]
via ::, Loopback0
L 2002:C0A8:101:1::1/128 [0/0]
via ::, Loopback0
L FE80::/10 [0/0]
via ::, Null0
L FF00::/8 [0/0]
via ::, Null0

■R4のルーティングテーブルを確認する
R4_3640#sh ipv6 route
IPv6 Routing Table - 5 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
S 2002::/16 [1/0]
via ::, Tunnel1
C 2002:C0A8:102:1::/64 [0/0]
via ::, Loopback0
L 2002:C0A8:102:1::2/128 [0/0]
via ::, Loopback0
L FE80::/10 [0/0]
via ::, Null0
L FF00::/8 [0/0]
via ::, Null0

■R4のipv6アドレス宛にping
R3_3640A#ping 2002:c0a8:0102:1::2 source loopback 0

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2002:C0A8:102:1::2, timeout is 2 seconds:
Packet sent with a source address of 2002:C0A8:101:1::1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/2/4 ms