example 6to4 Tunnel configuration

1. CONFIGURATION
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4. 6TO4 TOPOLOGY

5. R1
GIG 0/0: 200.100.192.1/24
GIG 1/0:2001:ABCD:1234::11/64
R2
GIG 0/0:200.100.192.2/24
GIG 1/0:2003:ABCD:1234::1/64
R3 GIG 0/0:2001:ABCD:1234::2/64
R4
GIG0/0:2003:ABCD:1234::2/64

6. R1#config t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#
R1(config)#
R1(config)#int gig 0/0
R1(config-if)#ip add 200.100.192.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#exit
R1(config)#
R1(config-if)#
R1(config-if)#int gig 1/0
R1(config-if)#
R1(config-if)#ipv6 add 2001:abcd:1234::1/64
R1(config-if)#no shut
R1(config-if)#
*Sep 3 22:45:04.219: %LINK-3-UPDOWN: Interface
GigabitEthernet1/0, changed state to up
*Sep 3 22:45:05.219: %LINEPROTO-5-UPDOWN: Line protocol on
Interface GigabitEthernet1/0, changed state to up

7. R2(config)#
R2(config)#I
R2(config)#int gig 0/0
R2(config)#ip add 200.100.19 2.2 255.255.255.0
R2(config-i
R2(config-if)#no shut
R2(config-if)#
R2(config-if)#
R2(config-if)#
*Sep 3 22:10:42.947: %LINK-3-UPDOWN: Interface
GigabitEthernet1/0, changed state to up
changed state to up
R2(confg-if)#END

8. R2(config)#
R2(config)#Iipv6 unicast-routing
R2(config)#int gig 1/0
R2(config)#iipv6 enable
R2(config-if)#ipv6 add 2003:abcd:1234::1/64
R2(config-if)#no shut
R2(config-if)#
R2(config-if)#
R2(config-if)#
*Sep 3 22:10:42.947: %LINK-3-UPDOWN: Interface
GigabitEthernet1/0, changed state to up
changed state to up
R2(confg-if)#END

9. R3#config t
Enter configuration commands, one per line. End with
CNTL/Z.
R3(config)#
R3(config)#ipv6 uni
R3(config)#ipv6 unicast-routing
R3(config)#int gig 0/0
R3(config-if)#ipv6 add 2001:abcd:1234::2/64
R3(config-if)#no shut
R3(config-if)#ex
*Sep 3 22:51:27.599: %LINK-3-UPDOWN: Interface
GigabitEthernet0/0, changed state to up
R3(config-if)#exit
R3(config)#
*Sep 3 22:51:27.603: %ENTITY_ALARM-6-INFO: CLEAR
INFO Gi0/0 Physical Port Administrative State Down
changed state to up
R3(config)#

10. R4#config t
R4(config)#
R4(config)#
R4(config)#ipv6 uni
R4(config)#ipv6 unicast-routing
R4(config)#int gig 0/0
R4(config-if)#ipv6 add
2001:abcd:1234::2/64
R4(config-if)#no shut
R4(config-if)#
R4(config-if)#end
R4#
*Sep 3 22:13:15.715: %SYS-5-CONFIG_I:
Configured from console by console

11. Configure tunnel 0

12. R1(config-if)#
R1(config-if)#int tunn 0
R1(config-if)#ipv6 add 2002:c864:c001::1/32
R1(config-if)#no shut
R1(config-if)#
R1(config-if)#
R1(config-if)#
R1(config-if)#
R1(config-if)#tunn so
R1(config-if)#tunn source 200.100.192.1
R1(config-if)#tunnel mode ipv6ip 6to4
R1(config-if)#
*Sep 3 22:59:36.991: %LINEPROTO-5-UPDOWN: Line protocol on
Interface Tunnel0, changed state to up
R1(config-if)#end
R1#
*Sep 3 22:59:43.819: %SYS-5-CONFIG_I: Configured from console by
console
R1#

13. R2(config-if)#
R2(config-if)#int tunn 0
R2(config-if)#ipv6 add 2002:c864:c002::1/32
R2(config-if)#no shut
R2(config-if)#
R2(config-if)#
R2(config-if)#
R2(config-if)#
R2(config-if)#tunn so
R2(config-if)#tunn source 200.100.192.2
R2(config-if)#tunnel mode ipv6ip 6to4
R2(config-if)#
*Sep 3 22:59:36.991: %LINEPROTO-5-UPDOWN: Line protocol on
Interface Tunnel0, changed state to up
R2(config- if)#end
R2#
*Sep 3 22:59:43.819: %SYS-5-CONFIG_I: Configured from console
by console
R2#

14. Configure static route at TUNNEL 0
R1
ipv6 route 2002:c864:C002::1/32 tunnel 0
ipv6 route 2003:abcd:1234::/64 2002:c864:c002::1
R2
ipv6 route 2002:c864:C001::1/32 tunnel 0
ipv6 route 2001:abcd:1234::/64 2002:c864:c001::1

15. R2#show ipv6 route
IPv6 Routing Table - 7 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 2001:ABCD:1234::/64 [1/0]
via 2002:C864:C001::1
C 2002:C864::/32 [0/0]
via ::, Tunnel0
L 2002:C864:C002::1/128 [0/0]
via ::, Tunnel0
C 2003:ABCD:1234::/64 [0/0]
via ::, GigabitEthernet1/0
L 2003:ABCD:1234::1/128 [0/0]
via ::, GigabitEthernet1/0
L FE80::/10 [0/0]
via ::, Null0
L FF00::/8 [0/0]
via ::, Null0

16. AFTER CONFIGURE STATIC ROUTE
PLS VERIFY BY PING IPV6 TUNN 0
R1# ping 2002:C864:C002::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2002:C864:C002::1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
384/440/480 ms
R1# ping 2002:C864:C002::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2002:C864:C002::1, timeout is 2
seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max =
356/392/476 ms
R1#

18. R1#config t
Enter configuration commands, one per line.
End with CNTL/Z.
R1(config)#
R1(config)#
R1(config)#
R1(config)#ipv6 router ospf 1
R1(config-router)#router-id 1.1.1.1
R1(config-router)#redistribute static
% Only classful networks will be redistributed
R1(config-router)#end
R1#

19. R1#config t
Enter configuration commands, one per line. End with
CNTL/Z.
R1(config)#
R1(config)#
R1(config)#
R1(config)#int gig 1/0
R1(config-if)#
R1(config-if)#ipv6 ospf 1 area 0
OSPFv3: No IPV6 enabled on this interface
R1(config-if)#ipv6 ena
R1(config-if)#ipv6 enable
R1(config-if)#ipv6 ospf 1 area 0
R1(config-if)#no shut
R1(config-if)#end
R1#

20. R3#config t
Enter configuration commands, one per line. End
with CNTL/Z.
R3(config)#ipv6 unicast-routing
R3(config)#
R3(config)#ipv6 router ospf 1
R3(config-rtr)#
*Sep 3 23:39:19.431: %OSPFv3-4-NORTRID:
OSPFv3 process 1 could not pick a router-id,
please configure manually
R3(config-rtr)#rou
R3(config-rtr)#router-id 3.3.3.3
R3(config-rtr)#auto-cost
R3(config-rtr)#end
R3#

21. R3#
R3#
*Sep 3 23:39:48.763: %SYS-5-CONFIG_I:
Configured from console by console
R3#config t
Enter configuration commands, one per line. End
with CNTL/Z.
R3(config)#int gig 0/0
R3(config-if)#ipv6 en
R3(config-if)#ipv6 enable
R3(config-if)#ipv6 ospf 1 area 0
R3(config-if)#no shut
R3(config-if)#end
R3#
*Sep 3 23:40:26.611: %SYS-5-CONFIG_I:
Configured from console by console
R3#

22. R2(config)#
R2(config)#ipv6 unicast-routing
R2(config)#ipv6 router ospf 1
R2(config-rtr)#rou
R2(config-rtr)#router-id 2.2.2.2
R2(config-rtr)#red
R2(config-rtr)#redistribute st
R2(config-rtr)#redistribute static
R2(config-rtr)#auto-cost
R2(config-rtr)#int gig 1/0
R2(config-if)#ipv6 ospf 1 area 0
R2(config-if)#no shut
R2(config-if)#end

23. R4(config)#
R4(config)#
R4(config)#ipv6 uni
R4(config)#ipv6 unicast-routing
R4(config)#ipv6 router ospf 1
R4(config-rtr)#r
*Sep 4 00:04:00.015: %OSPFv3-4-NORTRID: OSPFv3 process 1
could not pick a router-id,
please configure manually
R4(config-rtr)#rou
R4(config-rtr)#router-id 4.4.4.4
R4(config-rtr)#au
R4(config-rtr)#auto-cost
R4(config-rtr)#int gig 0/0
R4(config-if)#ipv6 ospf 1 area 0
R4(config-if)#no shut
R4(config-if)#
*Sep 4 00:04:39.775: %OSPFv3-5-ADJCHG: Process 1, Nbr 2.2.2.2
on GigabitEthernet0/0 from LOADING to FULL, Loading Done
R4(config-if)#end

24. PINGING R3 FROM R4
R4#ping 2001:ABCD:1234::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:ABCD:1234::2,
timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max
= 868/928/1100 ms
R4#ping 2001:ABCD:1234::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:ABCD:1234::2,
timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max
= 800/861/892 ms
R4#
R4#

25. Thank You
teezeck @gmail.com