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Do IPv6 addresses have a subnet mask?
IPv6 subnetting is easier than IPv4. IPv6 doesn’t have a subnet mask but instead calls it a Prefix Length, often shortened to “Prefix”. Prefix length and CIDR masking work similarly; The prefix length denotes how many bits of the address define the network in which it exists.
Why do I have two IPv6 addresses?
A device generates new 64 bits every once in a while and uses that in the IPv6 address. Because new addresses are generated regularly the addresses are marked as temporary . A device can have multiple privacy extension addresses if the system is still using an old address when a new address is being generated.
Which of the following is a legitimate IPv6 address?
The following are examples of valid IPv6 (normal) addresses: 2001:db8:3333:4444:5555:6666:7777:8888. 2001:db8:3333:4444:CCCC:DDDD:EEEE:FFFF.
Which is an example of an IPv6 special network address?
Six examples of IPv6 special networks and their addresses are shown below in IPv6 Special Networks and Addresses. Unique Local Addresses (ULA) – also known as “Private” IPv6 addresses. Link Local addresses, only valid inside a single broadcast domain. Global Unique Addresses (GUA) – Routable IPv6 addresses.
How are global unicast addresses organized in IPv6?
The unicast address format is organized in the following hierarchy: The global unicast address is globally unique in the Internet. The example IPv6 address that is shown in Prefixes in IPv6 is a global unicast address. The next figure shows the scope of the global unicast address, as compared to the parts of the IPv6 address.
Which is easier to subnett IPv4 or IPv6?
IPv6 subnetting is easier than IPv4. It’s also different. Want to divide or combine a subnet? All that is needed is to add or chop off digits and adjust the prefix length by a multiple of four. No longer is there a need to calculate subnet start/end addresses, usable addresses, the null route, or the broadcast address.
How many bits are in an IPv6 address?
IPv6 Addressing • An IPv6 address is 128 bits long • So the number of addresses are 2^128 = 340282366920938463463374607431768211455 • In hex, 4 bits (also called a ‘nibble’) is represented by a hex digit • So 128 bits is reduced down to 32 hex digits 2001:0DB8:D35D:B33F::/64