The facts
Ipv4 Vs. Ipv6
IPv6 is 128 bit address represented with hex notation. It will provided 16 billion billion addresses (2 to the power of 128).
IPv6 was deployed in 1999 and will be run alongside IPv4 for many years to come.
IP subnet zero is commonly used when VLSM is implemented in network design (using the "IP subnet zero" command on a Cisco router) and Cisco would endorse this use of subnet zero, however that would obviously need to be in conjunction with a classless routing protocol such as RIPv2 or OSPF.
Check out this fast sheet on IPv6, written by ARIN.
Http://www.Arin.Net/...s/IPv4_IPv6.Pdf
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14 replies to this topic
#12
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Posted 14 September 2009 - 05:55 PM
Replying to dexterThe interent growth has very little to do with the american military it is a british invention and grew when european companys such as CERN started using it :-)
#13
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Posted 11 February 2010 - 02:18 AM
Cisco has amended this concept. You can now use "subnet zero". But just remember, 2^and-2, you lose the first (network address) and last (broadcast address) of each subnet, I.E. You lose 2 addresses per subnet. For example 255.255.255.252 would leave four bit positions open, yet only have two usable addresses. Booya!
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Posted 31 October 2010 - 11:31 AM
IPV6 ip addressing is the future and will soon take over IPV4 ip addressing. The problem with this is, I absolutely hate IPV6 but I guess that could be that it's not as straight forward as IPV4. IPV4 is simple, every internet connection has a certain ip address in the form of 123.456.7.89.
IPV6 is a little more confusion. The calculations are in the posts above my one. An ipv6 address is in the form of: 2001:0DB8:AC10:FE01.
I guess I should spend more time looking into IPV6 as this is going to be the future
I don't really understand IPV6 at present
IPV6 is a little more confusion. The calculations are in the posts above my one. An ipv6 address is in the form of: 2001:0DB8:AC10:FE01.
I guess I should spend more time looking into IPV6 as this is going to be the future
I don't really understand IPV6 at present
Edited by GrumbleBall, 31 October 2010 - 12:13 PM.
#15 Guest_aljahwari_*
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Posted 31 March 2012 - 02:45 PM
IPv6 is based on IPv4, it is an evolution of IPv4. So many things that we find with IPv6 are familiar to us. The main differences are:
1.Simplified header format. IPv6 has a fixed length header, which does not include most of the options an IPv4 header can include. Even though the IPv6 header contains two 128 bit addresses (source and destination IP address) the whole header has a fixed length of 40 bytes only. This allows for faster processing.
Options are dealt with in extension headers, which are only inserted after the IPv6 header if needed. So for instance if a packet needs to be fragmented, the fragmentation header is inserted after the IPv6 header. The basic set of extension headers is defined in RFC 2460.
2.Address extended to 128 bits. This allows for hierarchical structure of the address space and provides enough addresses for almost every 'grain of sand' on the earth. Important for security and new services/devices that will need multiple IP addresses and/or permanent connectivity.
3.A lot of the new IPv6 functionality is built into ICMPv6 such as Neighbor Discovery, Autoconfiguration, Multicast Listener Discovery, Path MTU Discovery.
4.Enhanced Security and QoS Features.
Answer:
IPv4 means Internet Protocol version 4, whereas IPv6 means Internet Protocol version 6.
IPv4 is 32 bits IP address that we use commonly, it can be 192.168.8.1, 10.3.4.5 or other 32 bits IP addresses. IPv4 can support up to 232 addresses, however the 32 bits IPv4 addresses are finishing to be used in near future, so IPv6 is developed as a replacement.
IPv6 is 128 bits, can support up to 2128 addresses to fulfill future needs with better security and network related features. Here are some examples of IPv6 address:
1050:0:0:0:5:600:300c:326b
ff06::c3
0:0:0:0:0:0:192.1.56.10
<ins style="border-style: none; margin: 0px; padding: 0px; visibility: visible; width: 468px; position: relative; height: 60px"></ins>
The most important difference is that it has a larger address space. IPv6 uses 128 bits, instead of the 32 bits used in an IPv4 address.
There are also some changes in the header format, and some additional options, like built-in security options. These can be added to IPv4 through additional protocols, so this is really no big deal.
IPv4 is like 10.36.05.2 while IPv6 is one huge garble.
IPv4 is a 32 bits IP address that we use commonly, it can be 192.168.8.1, 10.3.4.5 or other 32 bits IP addresses. IPv4 can support up to 232 addresses, however the 32 bits IPv4 addresses are finishing to be used in near future, so IPv6 is developed as a replacement.
IPv6 is 128 bits, can support up to 2128 addresses to fulfill future needs with better security and network related features.
Here are some examples of IPv6 address:
1050:0:0:0:5:600:300c:326b
ff06::c3
0:0:0:0:0:0:192.1.56.10
For More help, you can visit website:http://www.iyogibusiness.com
The main difference, at least the one that is most relevant for a transition from version 4 to version 6, is the length of the addresses. IPv4 uses 4 bytes; IPv6 uses 16 bytes for the address.
Mainly, IPv6 has a larger addressing space; IPv6 addresses use 128 bits instead of 32 bits.
1.Simplified header format. IPv6 has a fixed length header, which does not include most of the options an IPv4 header can include. Even though the IPv6 header contains two 128 bit addresses (source and destination IP address) the whole header has a fixed length of 40 bytes only. This allows for faster processing.
Options are dealt with in extension headers, which are only inserted after the IPv6 header if needed. So for instance if a packet needs to be fragmented, the fragmentation header is inserted after the IPv6 header. The basic set of extension headers is defined in RFC 2460.
2.Address extended to 128 bits. This allows for hierarchical structure of the address space and provides enough addresses for almost every 'grain of sand' on the earth. Important for security and new services/devices that will need multiple IP addresses and/or permanent connectivity.
3.A lot of the new IPv6 functionality is built into ICMPv6 such as Neighbor Discovery, Autoconfiguration, Multicast Listener Discovery, Path MTU Discovery.
4.Enhanced Security and QoS Features.
Answer:
IPv4 means Internet Protocol version 4, whereas IPv6 means Internet Protocol version 6.
IPv4 is 32 bits IP address that we use commonly, it can be 192.168.8.1, 10.3.4.5 or other 32 bits IP addresses. IPv4 can support up to 232 addresses, however the 32 bits IPv4 addresses are finishing to be used in near future, so IPv6 is developed as a replacement.
IPv6 is 128 bits, can support up to 2128 addresses to fulfill future needs with better security and network related features. Here are some examples of IPv6 address:
1050:0:0:0:5:600:300c:326b
ff06::c3
0:0:0:0:0:0:192.1.56.10
<ins style="border-style: none; margin: 0px; padding: 0px; visibility: visible; width: 468px; position: relative; height: 60px"></ins>
The most important difference is that it has a larger address space. IPv6 uses 128 bits, instead of the 32 bits used in an IPv4 address.
There are also some changes in the header format, and some additional options, like built-in security options. These can be added to IPv4 through additional protocols, so this is really no big deal.
IPv4 is like 10.36.05.2 while IPv6 is one huge garble.
IPv4 is a 32 bits IP address that we use commonly, it can be 192.168.8.1, 10.3.4.5 or other 32 bits IP addresses. IPv4 can support up to 232 addresses, however the 32 bits IPv4 addresses are finishing to be used in near future, so IPv6 is developed as a replacement.
IPv6 is 128 bits, can support up to 2128 addresses to fulfill future needs with better security and network related features.
Here are some examples of IPv6 address:
1050:0:0:0:5:600:300c:326b
ff06::c3
0:0:0:0:0:0:192.1.56.10
For More help, you can visit website:http://www.iyogibusiness.com
The main difference, at least the one that is most relevant for a transition from version 4 to version 6, is the length of the addresses. IPv4 uses 4 bytes; IPv6 uses 16 bytes for the address.
Mainly, IPv6 has a larger addressing space; IPv6 addresses use 128 bits instead of 32 bits.
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