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). |
Network Sorcery is a great place to find RFC(s).
Refer to http://www.networksorcery.com/enp/protocol/ipv6.htm and http://www.networksorcery.com/enp/protocol/ip.htm links for related RFC(s) of IPv6 and IPv4 respectively.
Also there is good reference for Understanding IPv6 @ http://technet.microsoft.com/en-us/library/cc786127.aspx



10 comments:
thank you
Nice comparision i m wasim from pakistan
thank u...........such a nice comparision..
Thanks. This is very useful.
THANK U BUT GIVE MORE INFO
Tx. more info is highly appreciated. hw ever very helpful.
this is very good ....but i need the diff between RMI AND RFC
thnx.very useful for me thnx once again.pls give some vlan concept question from lenin chennai
Good-quick reference. Thanks
hey its a nice reference. Thanks
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