Re: [Autoconf] new charter

Alexandru Petrescu <alexandru.petrescu@gmail.com> Fri, 27 February 2009 10:11 UTC

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Date: Fri, 27 Feb 2009 11:12:16 +0100
From: Alexandru Petrescu <alexandru.petrescu@gmail.com>
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Subject: Re: [Autoconf] new charter
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HyungJin Lim a écrit :
> Hi Carlos,
>  
> This is Hyung-Jin, Lim
> I have a question.
> See the inline....
> 
>  
> 2009/2/27 Carlos Jesús Bernardos Cano <cjbc@it.uc3m.es 
> <mailto:cjbc@it.uc3m.es>>
> 
>     Hi Alex:
> 
>            One question below.
> 
>     El jue, 26-02-2009 a las 20:44 +0100, Alexandru Petrescu escribió:
>      > Sorry, I made an error indeed putting same prefix.  How about this
>      > updated picture with the prefixes being distinct:
>      >
>      >
>      >          -----  wifi "adhoc1"  ------  wifi "adhoc2"  -----
>      >         |Host1|---------------|Router|---------------|Host2|
>      >          ----- LL1         LL2 ------ LL3        LL4  -----
>      >                G1                                G4
>      >
>      >
>      >         "adhoc1" and "adhoc2": 802.11 ESSIDs in "ad-hoc" mode.
>      >                                Each is an IPv6 subnet.
>      >         LL1...4: IPv6 link-local addresses.
>      >                  Self-formed according to rfc2464.
>      >         G1, G4:  IPv6 global addresses, for example
>      >                  2001:db8:1::1/64 and
>      >                  2001:db8:2::4/64
>      >                  Manually assigned, or pre-configured with SNMP
>      >                  or formed according to stateless autoconf rfc4862;
>      >                  the prefixes are advertised by Router in RAs.
>      >
> 
>     Does this model only apply to Host-Router-Host scenarios? I mean, does
>     this model apply for Router-Router-Router scenarios? I fully agree the
>     model fits the first scenario, but I don't for the second, since
>     routers' mobility within the ad-hoc network would force them to change
>     prefixes often, I guess. For those scenarios it might be better to think
>     of addressing models in which MANET routers are configured with /128
>     (or /32 for IPv4) addresses, so they don't need to change their
>     addresses as a result of link changes.
> 
>  
> Does AUTOCONF not consider "ad-hoc network to Internet" scenario ?

Do you mean something like this?:

    -----  wifi "adhoc1"  ------  wifi "adhoc2"  --------     /
   |Host1|---------------|Router|---------------|Gatewway|---| Internet
    ----- LL1         LL2 ------ LL3        LL4  --------     \
          G1                                G4


        "adhoc1" and "adhoc2": 802.11 ESSIDs in "ad-hoc" mode.
                               Each is an IPv6 subnet.
        LL1...4: IPv6 link-local addresses.
                 Self-formed according to rfc2464.
        G1, G4: ?

Alex