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Re: Why do we need to go with 128 bits address space ?

Fernando Gont <fernando@gont.com.ar> Tue, 20 August 2019 04:46 UTC

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Subject: Re: Why do we need to go with 128 bits address space ?
To: "Pengshuping (Peng Shuping)" <pengshuping@huawei.com>, shyam bandyopadhyay <shyamb66@gmail.com>, "ietf@ietf.org" <ietf@ietf.org>
Cc: "irtf-discuss@irtf.org" <irtf-discuss@irtf.org>, "6man@ietf.org" <6man@ietf.org>
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From: Fernando Gont <fernando@gont.com.ar>
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Date: Tue, 20 Aug 2019 07:34:30 +0300
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On 20/8/19 05:45, Pengshuping (Peng Shuping) wrote:
> I just wonder, over two decades ago when the discussions happened,
> whether the question that was asked most was " Why do we need to go with
> 128 bits address space if whatever is been trying to achieve with the
> existing approach of IPv6, can be achieved by 64 32bits (IPv4) address
> space as well?"
> 
>  
> 
> But as we can see that the consensus (though maybe rough) was finally
> achieved back then when the hardware and software capabilities were
> still very limited. People say “wise people made history”. I always
> believe so.
> 
>  
> 
> Just a bit curious about, why NOW when today’s technologies (HW/SW
> processing capabilities as well as the ever-increasing bandwidth) are
> more advanced compared with those at 25 years ago, suddenly people
> become very concern with the overhead and start questioning about the
> “extra burden” caused by the packet address/header length…

One possible answer: IoT.

Thanks,
-- 
Fernando Gont
e-mail: fernando@gont.com.ar || fgont@si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1

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