Configuration time and type of IPV6 protocol address

The

IPV6 protocol address is 128 digits, does the address have to spend a lot of time? The

IPV6 protocol supports automatic address configuration, which is a Plug and play mechanism. The IPV6 node automatically configures the IPV6 address and gateway address via the address. The

IPv6 supports automatic configuration of stateless addresses and automatic configuration of state addresses in two ways. In the stateless address autoconfiguration mode, the network interface that needs to configure the address first uses the Neighbor discovery mechanism to obtain a link-local address. After the network interface obtains this link local address, then receives the router to announce the address prefix, unifies the interface identity to obtain a global address. The way state addresses are configured automatically, such as Dynamic Host Configuration Protocol (DHCP), requires a DHCP server that obtains address configuration information from the DHCP server through client/server mode. What are the types of

IPv6 addresses?

All types of IPV6 addresses are assigned to interfaces, not nodes. The IPV6 address is a 128-bit identifier for a single or set of interfaces, with three types:

(1) unicast (Unicast) address

An identifier for a single interface. Packets sent to a unicast address are sent to the interface identified by the address. For a node that has more than one interface, any one of its unicast addresses can be used as an identifier for that node. A IPV6 unicast address is an address clustered with contiguous bitmask, similar to CIDR's IPV4 address. The unicast address assignments in the IPV6 protocol address are available in various forms, including all clustered global unicast addresses, NSAP addresses, IPX rating addresses, site-local addresses, link-local addresses, and host addresses running IPV4. The following two special addresses are available in a unicast address:

The indeterminate address

Unicast address 0:0:0:0:0:0:0:0 is called an indeterminate address. It cannot be assigned to any node. An example of an application is when the host is initialized, and the source address field of any IPV6 protocol address that it sends can be placed on an indeterminate address before the host has obtained its own address. An indeterminate address cannot be used as a destination address in the IPV6 package, nor can it be used in a IPv6 route header; The

loopback address

Unicast address 0:0:0:0:0:0:0:1 is called a loopback address. The node uses it to send IPV6 packets to itself. It cannot be assigned to any physical interface. 3lian footage

(2) anycast (anycast) address

An identifier for a set of interfaces, which generally belong to different nodes. Packets destined for Anycast addresses are sent to one of the interfaces identified by the address (the routing protocol measures the nearest). IPV6 anycast addresses have the following limitations:

A anycast address cannot be used as a source address.And can only be the destination address;

IPv6


Anycast addresses cannot be assigned to hosts IPV6 protocol addresses, and can only be assigned to IPV6 routers;

(3) Multicast (multicast) address

IPv6 An identifier for the


A set of interfaces, which generally belong to different nodes. Packets destined for the multicast address of the IPV6 protocol address are sent to all interfaces identified by the address. 11111111 at the beginning of the address identifies the address as a multicast address.