Mandar is a technology blog ( Techsutram ) which compiled the major differences between IPv4 and IPv6. With your permission I put here the version translated into Portuguese:
| IPv4 | IPv6 |
| The addresses are 32 bits (4 bytes) in size. | The addresses are 128 bits (16 bytes) in size. |
| Address records (A) in the DNS map host names to IPv4 addresses. | Address records (AAAA) in the DNS map host names to IPv6 addresses. |
| Records of type Pointer (PTR) in the domain IN-ADDR.ARPA DNS map IPv4 addresses to host names. | Records of type Pointer (PTR) in the field IP6.ARPA map IPv6 addresses to DNS host names. |
| IPSec is optional and should be supported externally. | Support for IPSec is not optional. |
| The header does not identify the flow path or type of traffic for QoS handling by routers. | The header contains the Flow Label field that identifies the path and associates datagrams that are part of the communication between two applications and the Traffic Class field, which indicates the class of service and allows processing of QoS router. |
| Both routers and the sending host fragment packets. | The routers do not support packet fragmentation. The sending host performs packet fragmentation. |
| The header includes a checksum field to check the datagram header. | The header checksum does not include the field. |
| The header includes options. | Additional data are supported via extension headers. |
| ARP uses broadcast ARP requests to resolve IP addresses to MAC addresses / Hardware. | Use Multicast Neighbor Solicitation messages to resolve IP addresses to MAC addresses. |
| The Internet Group Management Protocol (IGMP) manages the group members local subnet. | Messages Multicast Listener Discovery (MLD) manage members in local subnet groups. |
| Broadcast addresses are used to send traffic to all nodes in a subnet. | IPv6 uses a scoped link-local multicast address for all nodes. |
| Can be configured manually or by DHCP. | It requires no manual configuration or DHCP. |
| Must support a packet size of 576-byte (possibly fragmented). | Must support a packet size of 1280-byte (without fragmentation). |
For more information see the original in English http://www.techsutram.com/2009/03/differences-ipv4-vs-ipv6.html
[...] Differences between IPv4 and IPv6 [...]
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Congratulations for the tip, was studying for the exam microsoft MCITP, when I dropped a simulated and a pargunda about this difference ...
thanks for help in my studies
Hug
Sidney Mendes
skype: sidney_gamaitaly
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Glad I could help! Good luck with the race!
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