Merhaba,
Bence güncel durum ile amacı karıştırmamak lazım. Şu anda IPv6 geçişinde
sorunlar olduğu kesin ve araştırma geliştirmelerin devam ettiği de kesin.
Ancak IPv6'nın tek yararı ip adres aralığı diyen biri pek fazla teknik
araştırma yapmamış vikipedia'lardan okumuştur diye düşünüyorum.
Ben 2 yıl önce yüksek lisans tezi olarak ipv6 system migration konusunu
incelediğim de bile çok başarılı sonuçlar almıştım.
Uzak doğudaki IPv6 gelişimini takip edebilirsiniz. Aşaığdaki liste
ülkelerdeki IPv4 adress dağılımını vermektedir. (Çin'in neredeyse Amerikanın
1/20si kadar adresi vardır.)
Country Addresses 2007-01-01 Addr 2006-01-01
US 1366.53 M1324.93 M United States
JP 151.27 M 143.00 M Japan
EU 115.83 M 113.87 M Multi-country in Europe
CN98.02 M 74.39 M China
GB93.91 M 73.81 M United Kingdom
CA71.32 M 67.43 M Canada
DE61.59 M 51.13 M Germany
FR58.23 M 45.16 M France
KR51.13 M 41.91 M Korea
AU30.64 M 26.87 M Australia
BR19.27 M 17.17 M Brazil
IT19.14 M 18.39 M Italy
ES18.69 M 16.29 M Spain
TW18.16 M 16.28 M Taiwan
NL18.08 M 16.40 M Netherlands
IPv6'nın avantajlarına gelince de:
Advantages of IPv6 http://it.moldova.org/pagini/eng/529/ over
IPv4http://it.moldova.org/pagini/eng/528/
:
- Trillions of times more addresses will make it a mathematical certainty
that in the future there will be orders of magnitude more devices with IPv6
than IPv4.
- IPv6 is easier to configure. Neighbor discovery finds other IPv6
systems and stateless (and stateful) autoconfiguration enable more automated
set up of systems.
- IPv6 is compatible with 3G wireless (near) broadband and has other
features that support greater mobility. There will be two billion mobile
phones by 2006 and (at least) two addresses are required per mobile phone,
so just enabling every mobile phone will require more IP addresses than are
left with IPv4. Static addresses can also double battery life by not wasting
power by checking whether a call is completed so the carrier can grab back
the dynamic IP address, which wastes a great deal of power.
- IPv6 supports ad hoc networking, given the features just mentioned,
enabling many different people, vehicles, weapons, etc. to all become
networked when brought into proximity without special programming.
- IPv6 supports more efficient usage of broadband, both via the
Jumbograms, in which packets increase from 64 KB in IPv4 to 4 GB in IPv6
(and soon 32 GB), and via the Flow Label, which enables network utilization
to triple, from 27% efficiency to 81% efficiency.
- Headers in IPv6 are leaner, with six unnecessary fields removed, and
one entirely new field added, enabling more efficient routing.
- IPSec is mandatory, bringing authentication (of users, of networks, and
even of applications) to the entire IPv6 Internet and creating a trusted
bubble according to Microsoft. IPv4 has no trusted bubbles.
- Quality of Service is including in IPv6 headers, enabling premium
pricing for guaranteed delivery, and prioritization of defense or other
critical government Internet-based communications, even when networks are
full. This is a big advance for actions against terrorist attacks or natural
disasters, when virtually all communications channels are swamped and first
responders and warfighters need prioritized packets to save lives.
- IPv6 allows for many new possibilities, including a new geolocation
system that lines up IPv6 addresses with squares or hexagons across the
earth's surface, in a new and novel latitude and longitude system that can
be scaled down to nearly microscopic granularity, potentially
- IPv6 allows for the possible new boom in new and novel applications to
enter into the world. In some cases, IPv6 tips the balance toward upgrading
vs. keeping an older version, as with Microsoft Longhorn. In other cases,
IPv6 will enable completely new applications and systems of applications,
such as IPv6 enabled conference badges, bar codes, or RFID tags.
- There was also an IPv5, but it was not a successor to IPv4; rather, it
was an experimental streaming protocol, intended to support voice, video,
and audio.
Source: http://usipv6.com/what_is_ipv6.html
*Son iki nokta:
* _1_
IPv6 routing performansını düşürmek yerine getirdiği yeni header yapısı ile
arttırmaktadır.
Faster routing:By using a simpler and more systematic header structure, IPv6
was supposed to improve the performance of routing. Recent advances in
router
