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IPv6 to IPv4 network

danny itza
Level 1
Level 1

Hi all,

I have an IPv6 network that is working, I am running dual stack on my routers, and my computer it work fine.  What I want to do is to just put an IPV6 address on my computer and with that single ipv6 go out to the internet and access both IPV6 and IPv4 address ( I don’t want to run dual stack on my computer just on my routers and switches)??????

Is their a way that I can configure my router so that when my computer running only ipv6 wants to reach a ipv4 address the router can automatically translate my ipv6 address and connect me to an ipv4 address???.

Any information or any other suggestion how to accomplish this will be highly appreciated, this is the configuration I am using at the moment on my router,

Thanks,

Danny

C3745_IPV6-RTR#show ver

Cisco Internetwork Operating System Software

IOS (tm) 3700 Software (C3745-IS-M), Version 12.3(26), RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2008 by cisco Systems, Inc.

Compiled Mon 17-Mar-08 17:42 by dchih

ROM: System Bootstrap, Version 12.2(8r)T2, RELEASE SOFTWARE (fc1)

C3745_IPV6-RTR uptime is 7 weeks, 6 days, 1 hour, 54 minutes

System returned to ROM by power-on

System image file is "flash:c3745-is-mz.123-26.bin"

cisco 3745 (R7000) processor (revision 2.0) with 118784K/12288K bytes of memory.

Processor board ID JMX0704L246

R7000 CPU at 350MHz, Implementation 39, Rev 3.3, 256KB L2, 2048KB L3 Cache

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

2 FastEthernet/IEEE 802.3 interface(s)

DRAM configuration is 64 bits wide with parity disabled.

151K bytes of non-volatile configuration memory.

31296K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x2102

ip name-server 2001:470:20::2

ip name-server 74.82.42.42

!

ipv6 unicast-routing

ipv6 cef

!

!

interface Tunnel0

description Hurricane Electric IPv6 Tunnel Broker

no ip address

ipv6 address 2001:470:13:85::2/64

ipv6 enable

tunnel source 200.32.250.29

tunnel destination 216.66.70.2

tunnel mode ipv6ip

interface FastEthernet0/0

no ip address

speed 100

full-duplex

ipv6 enable

!

interface FastEthernet0/0.10

description *** PUCLIC INTERFACE ***

encapsulation dot1Q 10

ip address 200.32.250.29 255.255.255.224

ip nat outside

interface FastEthernet0/0.888

description *** to BIT_RTR_1 ***

encapsulation dot1Q 888

ip address 192.168.0.1 255.255.255.0

ip nat inside

ipv6 address 2800:410:888:1::1/64

ipv6 enable

!

router bgp 10269

no synchronization

bgp log-neighbor-changes

neighbor 2001:470:13:85::1 remote-as 6939

neighbor 2001:4830:1600:236::1 remote-as 30071

no auto-summary

!

address-family ipv6

neighbor 2001:470:13:85::1 activate

neighbor 2001:4830:1600:236::1 activate

network 2800:410::/32

exit-address-family

ip nat translation timeout 900

ip nat translation tcp-timeout 900

ip nat translation udp-timeout 180

ip nat translation finrst-timeout 30

ip nat translation dns-timeout 30

ip nat translation icmp-timeout 30

ip nat translation max-entries 18000

ip nat pool IPNAT 200.32.250.50 200.32.250.62 prefix-length 28

ip nat inside source route-map MAP_IPNAT pool IPNAT overload

ip http server

ip classless

ip route 0.0.0.0 0.0.0.0 200.32.250.1

!

ipv6 route 2800:410:888:2::/64 2800:410:888:1::2

ipv6 route 2800:410::/32 Null0

ipv6 route ::/0 Tunnel0

!

3 Accepted Solutions

Accepted Solutions

Edison Ortiz
Hall of Fame
Hall of Fame

The internet is predominantly IPv4 at the moment so you need to translate your IPv6 to IPv4 with NAT.

Please refer to the documentation:

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-nat_trnsln_ps6350_TSD_Products_Configuration_Guide_Chapter.html

View solution in original post

Edison,

Thanks for the Information it really help me a lot, I just need to configure it on my routers and test it.

Thanks again,

Danny

View solution in original post

4 Replies 4

Edison Ortiz
Hall of Fame
Hall of Fame

The internet is predominantly IPv4 at the moment so you need to translate your IPv6 to IPv4 with NAT.

Please refer to the documentation:

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-nat_trnsln_ps6350_TSD_Products_Configuration_Guide_Chapter.html

Edison,

Thanks for the Information it really help me a lot, I just need to configure it on my routers and test it.

Thanks again,

Danny

Edison ,

Thanks, your information was very useful...

Glad to help.

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