From: Phillip.McCollum@ins.com
Date: Thu Nov 01 2007 - 19:48:47 ART
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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