From: Phillip.McCollum@ins.com
Date: Fri Nov 02 2007 - 12:56:53 ART
Shiran,
After looking over the documentation again, you're right, it's not very
clear. I believe that from the IPv6 source host, you need to ping the
HEX version of the IPv4 address appended to the NAT-PT prefix. So in
your example below, if you want to reach 10.1.45.5, you need to ping
2000::0a01:2D05. Give that a shot and let us know the results! This
document seems to spell things out a little better:
HTH,
Phillip
From: shiran guez [mailto:shiranp3@gmail.com]
Sent: Thursday, November 01, 2007 11:12 PM
To: McCollum, Phillip
Cc: ccielab@groupstudy.com
Subject: Re: IPV6 NAT-PT
what dose it mean destination
address = 2000::192.168.1.1 how can you ping 2000::192.168.1.1
R4#ping 2000::10.1.45.5
% Unrecognized host or address, or protocol not running.
interface Ethernet0/1
no ip address
half-duplex
ipv6 address 2001:CC1E:146:146::4/64
ipv6 nat
ipv6 rip RIPng enable
ipv6 rip RIPng default-information originate
!
!
interface Serial1/1
ip address 10.1.45.4 255.255.255.0
ipv6 nat
!
!
ipv6 nat v4v6 source 10.1.45.5 2001:CC1E:5::5
ipv6 nat v6v4 source route-map PT-SOURCE pool v4pool
ipv6 nat v6v4 pool v4pool 10.1.45.10 10.1.45.50 prefix-length 24
ipv6 nat prefix 2000::/96 v4-mapped v4map_acl
!
!
ipv6 prefix-list PT-LIST seq 5 permit 2001:CC1E:146:146::/64
ipv6 prefix-list PT-LIST seq 10 permit 2001:150:1:6::/64
route-map PT-SOURCE permit 10
match ipv6 address prefix-list PT-LIST
!
R4 is connected via Serial to R5, R5 is pure v4 and R4 is the NAT-PT
behind R4 there are R1 and R6 over a Ethernet R6 is Pure v6 and R1 is
dual mode but with no NAT-PT or any other connection between the
protocols.
I want to be able to Ping from R6 to the v4 domain and from the v4
Domain to ping to v6 Domain Dynamically.
In my configuration I went according to the Documentation and I do not
understand practically how the Dynamic works.
On 11/2/07, Phillip.McCollum@ins.com <Phillip.McCollum@ins.com > wrote:
Shiran,
I was pretty confused when working with this as well. Read over this
line and see if it helps to sink in. Taken from
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/
ipv6_c/sa_natpt.htm#wp1079515:
==========
Enabling Traffic to be Sent from an IPv6 Network to an IPv4 Network
without Using IPv6 Dastination Address Mapping: Example
In the following example, the access list permits any IPv6 source
address with the prefix 2001::/96 to go to the destination with a
2000::/96 prefix. The destination is then translated to the last 32 bit
of its IPv6 address; for example: source address = 2001::1, destination
address = 2000::192.168.1.1. The destination then becomes 192.168.1.1 in
the IPv4 network:
ipv6 nat prefix 2000::/96 v4-mapped v4map_acl
ipv6 access-list v4map_acl
permit ipv6 2001::/96 2000::/96
==========
Phillip
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
shiran guez
Sent: Thursday, November 01, 2007 1:00 PM
To: Cisco certification
Subject: IPV6 NAT-PT
I am going out of my mind to figure out this, it seam like this
technology
do not want to go trough my head.
I already went trough the RFC and the Cisco DOC from univercd, but it is
not
sinking in.
I understand how the Static 1 to 1 work, but the Dynamic I do not see
how
can you set a range of address on one protocol and on the other protocol
without linking them one to one
for say I have IPv6 Network on one side and IPV4 on the other side and
NAT-PT between them, if i set a pool of IPv4 and a Prefix of /96 for the
IPv6 what address should I ping from the IPv6 to the IPv4 to reach a
specific node if it is not mapped how can he know where to go?
if some one have a better explanation and a working sample config I
would
much appreciate it as I am pooling hare as we speak.
-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
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