Thesis Car

Topics: IPv4, Internet Protocol, IPv6 Pages: 3 (963 words) Published: January 8, 2013
IPv4 vs IPv6
I had compiled differences between IPv6 and IPv4 long back. Though it is for my personal reference I am uploading it on my blog. Hope someone might find this useful. Thanks to those known and known sources who helped me compile this. IPv4 | IPv6 |

Addresses are 32 bits (4 bytes) in length. | Addresses are 128 bits (16 bytes) in length | Address (A) resource records in DNS to map host names to IPv4 addresses. | Address (AAAA) resource records in DNS to map host names to IPv6 addresses. | Pointer (PTR) resource records in the IN-ADDR.ARPA DNS domain to map IPv4 addresses to host names. | Pointer (PTR) resource records in the IP6.ARPA DNS domain to map IPv6 addresses to host names. | IPSec is optional and should be supported externally | IPSec support is not optional | Header does not identify packet flow for QoS handling by routers | Header contains Flow Label field, which Identifies packet flow for QoS handling by router. | Both routers and the sending host fragment packets. | Routers do not support packet fragmentation. Sending host fragments packets | Header includes a checksum. | Header does not include a checksum. | Header includes options. | Optional data is supported as extension headers. | ARP uses broadcast ARP request to resolve IP to MAC/Hardware address. | Multicast Neighbor Solicitation messages resolve IP addresses to MAC addresses. | Internet Group Management Protocol (IGMP) manages membership in local subnet groups. | Multicast Listener Discovery (MLD) messages manage membership in local subnet groups. | Broadcast addresses are used to send traffic to all nodes on a subnet. | IPv6 uses a link-local scope all-nodes multicast address. | Configured either manually or through DHCP. | Does not require manual configuration or DHCP. | Must support a 576-byte packet size (possibly fragmented). | Must support a 1280-byte packet size (without fragmentation). | Loopback

Loopback (loop-back) describes...
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