12/19/2023 0 Comments Ipv4 loopback addressAn unspecified unicast address is used as a source address to indicate the absence of an address. Unspecified addresses: An unspecified unicast address is an all-0s address. It is equivalent to the IPv4 loopback address, 127.0.0.1. Loopback addresses: A loopback address is an all-0s address except for the last bit, which is set to 1. Link-local unicast addresses are usually automatically created but can also be manually configured. An IPv6-enabled device must have a link-local address. The uniqueness of this address only has to be assured on that link because these packets are not routable off the link. Link-local addresses: A link-local unicast address (fe80::/10) is a unicast address that is confined to a single link. The current GUA address assignment from IANA begins with the binary value 001 or the prefix 2000::/3. They are equivalent to public IPv4 addresses. These addresses are globally routable and reachable on the IPv6 Internet. Global unicast addresses (GUAs): Global unicast addresses are also known as an aggregatable global unicast address. There are several types of unicast addresses: A source IPv6 address must be a unicast address. Unicast addresses: A unicast address uniquely identifies an interface on an IPv6 device. The following is a brief description of each of the addresses as discussed in this chapter: This chapter introduces the three types of IPv6 addresses: unicast, multicast, and anycast. Currently, only one-eighth of this space has been allocated for global unicast addresses, and a very small portion has been allocated for other unicast and multicast addresses. IPv6, with its 128-bit address space, provides for 340 undecillion addresses. The IPv6 address space is extremely large. The notation of the address can be reduced by omitting leading 0s and by using the double colon to replace contiguous hextets of 0s. The preferred format of an IPv6 128-bit address is written as eight 16-bit segments (hextets), separated by colons. This chapter explains the basics of IPv6 addressing.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |