Sunday, March 1, 2009

Differences IPv4 Vs IPv6

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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


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52 comments:

  1. Nice comparision i m wasim from pakistan

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  2. thank u...........such a nice comparision..

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  3. Thanks. This is very useful.

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  4. Tx. more info is highly appreciated. hw ever very helpful.

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  5. this is very good ....but i need the diff between RMI AND RFC

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  6. thnx.very useful for me thnx once again.pls give some vlan concept question from lenin chennai

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  7. Good-quick reference. Thanks

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  8. hey its a nice reference. Thanks

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  9. really helped me for my quiz thanks a lot

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  10. thanx sir...........divesh agrahari

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  11. ya its really good and very helpful thank you so much ...:)

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  12. it was of great help.. thank yu..

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  13. i suggest to keep in touch with an ipv4 to ipv6 discussion forum since it often gets full of expertise and good answers

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  14. hey thanx for giving this ....

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  15. well can u tell me which is best ipv6 or ipv4

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  16. tank you sir I ajith from kerala

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  17. there's one mistake in first point....it shud b 6 bytes..

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  18. Thanks:) Really useful one.. Good job..

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  19. This is really nice..
    Thankz alot :)

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  20. I like your Blog.
    satyam from india

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  21. image only:
    https://docs.google.com/document/d/1IN43WKZQbETdkGLvdDSTCrMMk4F3Xb4LJqUcCoMMsAU/edit

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  22. Thanx for u r blogs... jus referred u r blogs instead of books during exams...

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  23. This comment has been removed by the author.

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  24. Thanks for helpin fo my cn 2 xam..

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  25. many thanks.. just pop to me in google when i search for ipv4 vs ipv6 which is what i need to know..
    useful table

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  26. i need difference between ip4 &ip5

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  27. i need difference between ipv4 nd ipv6

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  28. Thank you, you are a life-saver. Required this for my assignment.

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  29. I have been receiving abusive comments.
    Considering nature of the content it is quite possible that there are few new improvements or additions over period of time (this article is from year 2009), please consider adding to the contents even it means pointing out few mistakes or new additions. Posting abusive comments neither does justice to the contents of this post nor to me as an author.

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  30. thnx not getting this in any other tutorials.
    thnx fr giving detail & point to point difference..

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  31. beautiful comparison thanks a lot

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  32. beautiful comparison between ipv4 and ipv6 great job

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  33. Thanks a lot. This really helped me with my TCP/IP class unit on IPv6.

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