Re: Numbers of NAT-s in IPv4/IPv6 Network? One or more?

[Pyda Srisuresh <srisuresh@yahoo.com>]

Please see my comments in-line.

cheers,
suresh

--- Fred Templin <ftemplin@iprg.nokia.com> wrote:
> This is an interesting question, and I'm certainly no expert on
> the subject. But, in theory, couldn't there be more than one NAT
> if, e.g., the (multiple) NAT boxes communicated out-of-band
> to keep a consistent view of the aggregate state information?
> (Then, you get into questions as to whether the multiple NATs
> are there for something simple like load balancing/fault tolerance,
> or for something more complex like site multi-homing.)
> 
You might want to take a look at draft-park-scalable-multi-natpt--00.txt that
proposes to do precisely that.

> I guess I don't have anything conclusive for you on this, but just
> to note that the "must" in your statement: "there must be only
> one NAT" may be a bit too strong.

I think so, as well.

> 
> Fred
> ftemplin@iprg.nokia.com
> 
> Bilajbegovic Damir wrote:
> 
> >Case: local network connected to the public IP network
> >
> >If I understood right, in normally network translation (local IPv4 to public
> >IPv4), there must be only one NAT (simplest solution) at the border of
> >network. (NAT-PT and all necessarily ALG)
> >
> >If there is translation between IPv4 intranet and IPv6 public network can
> >then be more than NAT-PT? (all intranet is IPv4, and all public is IPv6)
> >
> >If you know the answer or you can direct me to some document I would be
> >grateful.
> >         Damir Bilajbegovic
> >
> >P.S: In translation IPv4/IPv6 there is always translation, and nor IPv4
> >user, nor IPv6 server do not see directly each other, they see IPv4 address
> >which NAT gives to server, and IPv6 server sees IPv6 address of user by
> >which NAT represents user. Every packet will go directly to specific NAT
> >(the one who knows translation parameters of connection). So, I do not see
> >any problem in translation. I'm I wrong.
> > 
> >
> >
> >  
> >
> 
> 
> 


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