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S-au terminat adresele IPv4

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18 replies to this topic

#1
don_dannielo

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ICANN assigns its last IPv4 addresses

The Internet Assigned Numbers Authority (IANA) has handed out its last IPv4 addresses, leaving the remaining blocks to regional registries that in some cases may exhaust them within a few months.

The end of IPv4 (Internet Protocol version 4) addresses was announced in a ceremony in Miami on Thursday morning. Each of the five Regional Internet Registries (RIRs) was allocated one of the final five large blocks of about 16 million addresses.

The end of the central supply of IPv4 addresses signaled the urgency of enterprises and service providers to migrate to IPv6, the latest version of the protocol, which has been available for more than a decade and allows for an almost unlimited number of addresses. When there are no more IPv4 addresses available from the RIRs, new hosts on the Internet will not be able to communicate with systems that use only IPv4 without special mechanisms that could degrade the Internet experience. Some experts advise adopting a "dual-stack" approach to remain connected with both IPv4 and IPv6 hosts.

"A pool of more than four billion Internet addresses has just been emptied this morning," said Rod Beckstrom, president and CEO of the Internet Corporation for Assigned Names and Numbers (ICANN), which oversees IANA. "The future of the Internet, and the innovation it fosters, lies with IPv6."

...

http://www.computerw..._IPv4_addresses

#2
Chedburn

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Quote

"The future of the Internet, and the innovation it fosters, lies with IPv6."
:coolspeak:

#3
Un_Nimeni_Celebru

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Deci, in cazul asta vand IP-ul vecinului la licitatie. Care da mai mult? Momentan nu-l stiu dar pentru bani frumosi...se afla. :thumbup:

#4
Centris

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hiiii, ce nenorociireeee!

e doar un semnal sa inceapa implementarea la scara larga a IPV6.

#5
SuperMelon

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Acum se vor cumpara la licitatie ip`uri de genul xx.xxx.xxx.xx unde x nu are nicio legatura cu xxx.

#6
Courage

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Da ati vazut cum arata un IPv6?

Abia astept sa il silabisesc la telefon :D

Quote

IPv6 addresses are written in groups of four hexadecimal digits separated by colons, for example, 2001:0db8:85a3:0000:0000:8a2e:0370:7334


#7
Gr8Man

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 Courage, on 3rd February 2011, 20:05, said:

Da ati vazut cum arata un IPv6?

Abia astept sa il silabisesc la telefon :D

Se poate prescurta, in unele cazuri.

Exemplul tau devine : 2001:0db8:85a3::8a2e:0370:7334, un pic mai usor de silabisit la telefon :D.

Edited by Gr8Man, 03 February 2011 - 20:23.


#8
bozghiyy

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al meu e doar din 3 grupuri (dca o sa mi-l pastrez, desi nu cred) restu sunt 0 si se pot ignora, plus ca localhost are mult mai mult sens ::1

#9
Courage

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Q: What is IPv4?
A: IPv4 stands for Internet Protocol version 4. It is the underlying technology that makes it possible for us to connect our devices to the web. Whenever a device access the Internet (whether it’s a PC, Mac, smartphone or other device), it is assigned a unique, numerical IP address such as 99.48.227.227. To send data from one computer to another through the web, a data packet must be transferred across the network containing the IP addresses of both devices.

Without IP addresses, computers would not be able to communicate and send data to each other. It’s essential to the infrastructure of the web.

Q: What is IPv6?
A: IPv6 is the sixth revision to the Internet Protocol and the successor to IPv4. It functions similarly to IPv4 in that it provides the unique, numerical IP addresses necessary for Internet-enabled devices to communicate. However, it does sport one major difference: it utilizes 128-bit addresses. I’ll explain why this is important in a moment.

Q: Why are we running out of IPv4 addresses?
A: IPv4 uses 32 bits for its Internet addresses. That means it can support 2^32 IP addresses in total — around 4.29 billion. That may seem like a lot, but all 4.29 billion IP addresses have now been assigned to various institutions, leading to the crisis we face today.

Let’s be clear, though: we haven’t run out of addresses quite yet. Many of them are unused and in the hands of institutions like MIT and companies like Ford and IBM. More IPv4 addresses are available to be assigned and more will be traded or sold (since IPv4 addresses are now a scarce resource), but they will become a scarcer commodity over the next two years until it creates problem for the web.

Q: How does IPv6 solve this problem?
A: As previously stated, IPv6 utilizes 128-bit Internet addresses. Therefore, it can support 2^128 Internet addresses — 340,282,366,920,938,000,000,000,000,000,000,000,000 of them to be exact. That’s a lot of addresses, so many that it requires a hexadecimal system to display the addresses. In other words, there are more than enough IPv6 addresses to keep the Internet operational for a very, very long time.

Q: So why don’t we just switch?
A: The depletion of IPv4 addresses was predicted years ago, so the switch has been in progress for the last decade. However, progress has been slow — only a small fraction of the web has switched over to the new protocol. In addition, IPv4 and IPv6 essentially run as parallel networks — exchanging data between these protocols requires special gateways.

To make the switch, software and routers will have to be changed to support the more advanced network. This will take time and money. The first real test of the IPv6 network will come on June 8, 2011, World IPv6 Day. Google, Facebook and other prominent web companies will test drive the IPv6 network to see what it can handle and what still needs to be done to get the world switched over to the new network.

Q: How will this affect me?
A: Initially, it won’t have a major impact on your life. Most operating systems actually support IPv6, including Mac OS X 10.2 and Windows XP SP 1. However, many routers and servers don’t support it, making a connection between a device with an IPv6 address to a router or server that only supports IPv4 impossible. IPv6 is also still in its infancy; it has a lot of bugs and security issues that still need to be fixed, which could result in one giant mess.

Nobody’s sure how much the transition will cost or how long it will take, but it has to be done in order for the web to function as it does today.


#10
G@briel

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Cam era cazul sa se termine! :D Sa vad si eu acum adminii care mai tin minte adresele IP :D
Oricum, cine are AS si vrea un /48 sa dea un mesaj!

#11
bozghiyy

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 bozghiyy, on 3rd February 2011, 21:32, said:

al meu e doar din 3 grupuri (dca o sa mi-l pastrez, desi nu cred) restu sunt 0 si se pot ignora, plus ca localhost are mult mai mult sens ::1

m-am mai informat si se pare ca toate ipv4 care sunt embed in ipv6 sunt de 3 octeti.

2002  : 0000 : 0000 : 0000 : 0000 : 0000 : CD34 : 23EF
(prefix) ............................................ (adresa ipv4 enbeded)

si se iau cate 2 numere in hex din ultimele 2 grupuri de 8 octeti si iti dau adresa ipv4

#12
proIntel

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ADRESA TA IP ESTE: 79.116.143.51
Cum poti sa zici ca s-au terminat IP-urile v4? Oare daca era asa nu trebuia sa am un IPv6?!

#13
don_dannielo

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Nu, IP-urile nu se termina ca mancarea din farfurie, nu dispar.
Raman pe lume.

#14
proIntel

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 don_dannielo, on 21st February 2011, 09:57, said:

Atunci care-i spirla? Cand voi avea IPv6? :rolleyes:

#15
bozghiyy

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 proIntel, on 21st February 2011, 11:08, said:

Atunci care-i spirla? Cand voi avea IPv6? :rolleyes:

Pai si acuma poti sa ai , daca ai win 7 e deja activat si la xp se instaleaza simplu (ca sa verifici cel mai simplu local dai un ping la ::1 care e localhost) . Orice ipv4 are un corespondent in ipv6 . Ai putea sa zici ca ipv6 = ipv4 + 2 la puterea 96. Dar e mai complex decat atat :)

Referitor la sfarsitul IPv4, nu se stie cand o sa fie ( 6 luni, 1 an , 5 ani), cu siguranta o sa fie o perioada de tranzitie, cand vor functiona in paralel.

#16
loveparade

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 Courage, on 3rd February 2011, 21:05, said:

Da ati vazut cum arata un IPv6?

Abia astept sa il silabisesc la telefon :D

Poate pun o intrebare stupida... De ce nu au lasat formatul cu xxx.xxx.xxx.xxx.xxx.xxx.xxx.
unde x poate fi o cifra de la 0 la 9.
De ce trebuia sa mai puna si litere? si doua puncte?
Pe bune stiu o gramada de ip-uri pe de rost ca si numerele de telefon. Ce o sa ma fac cu IPv6? Iau non stop vitamine si minerale pentru sustinerea memoriei? Ori un Notepad deschis non-stop?
Dar cand i-l silabisesc la telefon?
Mai zii odata ce ai zis.... care litera? Cine ma aude ce vorbesc la telefon crede ca sunt complet nebun!!!

#17
OriginalCopy

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 loveparade, on 7th June 2011, 02:02, said:

Poate pun o intrebare stupida... De ce nu au lasat formatul cu xxx.xxx.xxx.xxx.xxx.xxx.xxx.
unde x poate fi o cifra de la 0 la 9.
De ce trebuia sa mai puna si litere? si doua puncte?
Pe bune stiu o gramada de ip-uri pe de rost ca si numerele de telefon. Ce o sa ma fac cu IPv6? Iau non stop vitamine si minerale pentru sustinerea memoriei? Ori un Notepad deschis non-stop?
Dar cand i-l silabisesc la telefon?
Mai zii odata ce ai zis.... care litera? Cine ma aude ce vorbesc la telefon crede ca sunt complet nebun!!!
Sper că ești o laie în domeniul IT și nu lucrezi în domeniu. Adresele IPv6 sunt numere toată ziua!

Bravo ție că le știi pe de rost. Nu au fost gândite pentru oameni. Pentru oameni avem DNS. Deci să fii sănătos :P

#18
bozghiyy

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 loveparade, on 7th June 2011, 03:02, said:

Poate pun o intrebare stupida... De ce nu au lasat formatul cu xxx.xxx.xxx.xxx.xxx.xxx.xxx.
unde x poate fi o cifra de la 0 la 9.
De ce trebuia sa mai puna si litere? si doua puncte?
Pe bune stiu o gramada de ip-uri pe de rost ca si numerele de telefon. Ce o sa ma fac cu IPv6? Iau non stop vitamine si minerale pentru sustinerea memoriei? Ori un Notepad deschis non-stop?
Dar cand i-l silabisesc la telefon?
Mai zii odata ce ai zis.... care litera? Cine ma aude ce vorbesc la telefon crede ca sunt complet nebun!!!

Sunt si litere si cifre pentru ca se foloseste sistemul hex (in baza 16) , unde A = 10 , B = 11 ... etc (cine a facut mate pe la scoala stie).


Se foloseste HEX pentru ca transformarea din hex in binar e mult mai usoara decat transformarea din decimal in binar. Un alt motiv ar fi ca ipv6 ar avea un numar de clase mult mai mare daca s-ar folosi sistemul decimal.

Dezavantajul este ceea ce zici tu. Dar cred ca este doar pentru ca multa lume nu este familiara cu formatul HEX. Orice persoana care lucreaza in networking nu cred ca va avea probleme.

Doua puncte se folosesc , cred , pentru a nu face confuzii intre IPv6 si IPv4, pentru ca tranzitia nu se va face instant, o sa existe o perioada cand vor merge in comun.

Si de tinut minte nu e foarte greu , pentru ca teoretic trebuie tinut minte doar 32 bits din cei 128 (ca si ipv4) restul sunt informatii de subnet de routare si de informatii de identificare.

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