04-03-2013, 12:33 PM
IPv6: The Next Generation Internet Protocol
The Next Generation.ppt (Size: 620 KB / Downloads: 33)
What Is IPv6?
Internet Protocol version 6 (IPv6) is the next generation Internet Protocol.
It is designed to supplement IPv4 and fix problems with IPv4 and allow for future growth.
IPv4 is the IP protocol currently in use on the Internet today.
Why IPv6?
IPv6 primarily fixes the major problem we have with IPv4: Depletion of address space.
IPv4 has a 32-bit address space. Each host on the Internet needs a legitimate, routable IPv4 address to communicate.
“Classes”
Class A
1.0.0.0 to 126.0.0.0 = only 126 class A’s
Taken by large companies (IBM, AT&T) and universities (MIT) that didn’t need that much space.
Class B
128.0.x.x to 191.255.x.x
Given to Government agencies and universities and Internet Service Providers (ISPs)
Class C
192.1.1.x to 223.255.255.x
Given to small business, universities and small ISPs
Well, not Quite, but Close
IPv6 is set up to work with the last 64 bits of the address as the “host” address.
This usually maps to the hardware address, or in the case of Ethernet, the MAC address.
IPv6 and Legacy Protocols
The IPv6 standard does not modify any of the payload protocols like TCP or UDP.
IPv6 can also translate or tunnel IPv4
or vice versa: IPv4 can tunnel IPv6
Networks
Most commercial ISPs (in the U.S.) do not offer IPv6.
They might offer “tunneled” IPv6.
Most research and some government networks support IPv6 “natively”:
NASA’s NREN Research Network
Not the NASA production Network
Internet2 (Abilene), vBNS+, CANARIE, DANTE (GEANT), APAN?
The Next Generation.ppt (Size: 620 KB / Downloads: 33)
What Is IPv6?
Internet Protocol version 6 (IPv6) is the next generation Internet Protocol.
It is designed to supplement IPv4 and fix problems with IPv4 and allow for future growth.
IPv4 is the IP protocol currently in use on the Internet today.
Why IPv6?
IPv6 primarily fixes the major problem we have with IPv4: Depletion of address space.
IPv4 has a 32-bit address space. Each host on the Internet needs a legitimate, routable IPv4 address to communicate.
“Classes”
Class A
1.0.0.0 to 126.0.0.0 = only 126 class A’s
Taken by large companies (IBM, AT&T) and universities (MIT) that didn’t need that much space.
Class B
128.0.x.x to 191.255.x.x
Given to Government agencies and universities and Internet Service Providers (ISPs)
Class C
192.1.1.x to 223.255.255.x
Given to small business, universities and small ISPs
Well, not Quite, but Close
IPv6 is set up to work with the last 64 bits of the address as the “host” address.
This usually maps to the hardware address, or in the case of Ethernet, the MAC address.
IPv6 and Legacy Protocols
The IPv6 standard does not modify any of the payload protocols like TCP or UDP.
IPv6 can also translate or tunnel IPv4
or vice versa: IPv4 can tunnel IPv6
Networks
Most commercial ISPs (in the U.S.) do not offer IPv6.
They might offer “tunneled” IPv6.
Most research and some government networks support IPv6 “natively”:
NASA’s NREN Research Network
Not the NASA production Network
Internet2 (Abilene), vBNS+, CANARIE, DANTE (GEANT), APAN?