From: Alex Steer (alex.steer@eison.co.uk)
Date: Fri Sep 28 2007 - 04:25:50 ART
Because you haven't configured most of it.
Check below:-
1. Firstly. As with any nat you need to enable it on the outside
and inside interface(s) with the "ipv6 nat" command
2. Next you need a prefix that can be used by v4 hosts for
reachablity (config)#ipv6 nat prefix X::X:X/96 (this can also be
configured on a per interface basis)
3. You need a translation in each direction (remember the command
here is SOURCE so it isn't the same command flipped on its head)
Ipv6 nat v6v4 source ipv6hostsource ipv4somethingmadeup
Ipv6 nat v4v6 source ipv4hostsource somethingintheprefixrange
Don't forget the v6 host needs a route to the prefix range and the v4
host needs a route to the ipv4somethingmadeup range
Check to see if this works below:-
R6
Int lo1
Ipv6 nat
Int fastconnection r/9
Ipv6 nat
Ipv6 nat prefix 2001:6::/96
ipv6 nat source v6v4 source 3333:6:6:6::6 104.69.69.16
ipv6 nat source v4v6 104.69.69.16 2001:6::104:69:69:16
ipv6 route 2001:9::/96 next-ipv6-hop-address
-------------------------------------------------------
R9
Int lo1
Ipv6 nat
Int gigaconnection r/6
Ipv6 nat
Ipv6 nat prefix 2001:9::/96
ipv6 nat v6v4 source 3333:9:9:9::9 104.69.69.19
ipv6 nat v4v6 source 104.69.69.19 2001:9::104:69:69:16
ipv6 route 2001:6::/96 next-ipv6-hop-address
let me know how you get on (forgive if my syntax is wrong). Debug ipv6
nat and debug ipv6 packet will show you if you have the correct routing
and nat statements in both directions.
Alex
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ISolveSystems
Sent: 28 September 2007 03:05
To: groupstudy
Subject: Simple IPv6 NAT config
R6 connects to R9 via Serial using IPv4 address. R6(104.69.69.6); R9(
104.69.69.9)
R6 Lo1 - 3333:6:6:6::6
R9 Lo1 - 3333:9:9:9::9
Task asks to configure IPv6 NAT over the serial link. Lo1 int should be
able to ping each other using IPv4 address from the shared subnet. Do
not
use Overload.
Below is the config. Any idea why it doesn't work?
R6
ipv6 nat v6v4 source 3333:6:6:6::6 104.69.69.16
R9
ipv6 nat v6v4 source 3333:9:9:9::9 104.69.69.19
This archive was generated by hypermail 2.1.4 : Sat Oct 06 2007 - 12:01:16 ART