Types of IPv6 addresses. Three categories of IPv6 addresses exist: Unicast – represents a single interface. Packets addressed to a unicast address are delivered to a single host. Anycast – identifies one or more interfaces. For example, servers that support the same function can use the same unicast IP address.
Every IPv6 interface has a link-local IP address. If the interface is also able to communicate on a larger network (such as the Internet) then it also has a global scope address. That's two addresses minimum, right there. And if the host is behind a multihomed Internet connection, it probably has even more addresses.
Mar 31, 2020 · to have only a link-local IPv6 address. Explanation: With IPv6, a router interface typically has more than one IPv6 address. The router will at least have a link-local address that can be automatically generated, but the router commonly has …
Jan 19, 2018 · interface type number Example: Device(config)# interface serial 3 Specifies an interface type and number, and enters interface configuration mode. Step 10: ipv6 dhcp server poolname [rapid-commit] [preference value] [allow-hint] Example: Device(config-if)# ipv6 dhcp server pool1 Step 11: end Example:
Another reason is to map the addresses of network adapters (or interfaces) that connect devices to the network. IPv6 features an inherent capability to resolve addresses at their lowest level , which is at the network interface level, and also has auto-configuration capabilities.
One reason for such a large address space is to subdivide the available addresses into a hierarchy of routing domains that reflect the Internet's topology. Another reason is to map the addresses of network adapters (or interfaces) that connect devices to the network.
The DHCPv6 client function can be enabled on individual IPv6-enabled interfaces. The DHCPv6 client can request and accept those configuration parameters that do not require a server to maintain any dynamic state for individual clients, such as DNS server addresses and domain search list options.
The DHCPv6 server can provide configuration parameters that do not require the server to maintain any dynamic state for individual clients, such as DNS server addresses and domain search list options. The DHCPv6 server may be configured to perform prefix delegation.
The IPv6 Access Services—DHCPv6 Prefix Delegation feature can be used to manage link, subnet, and site addressing changes. Dynamic Host Configuration Protocol for IPv6 (DHCPv6) can be used in environments to deliver stateful and stateless information, which are defined as follows:
The DUID is unique across all DHCP clients and servers, and it is stable for any specific client or server. DHCPv6 uses DUIDs based on link-layer addresses for both the client and server identifier. The device uses the MAC address from the lowest-numbered interface to form the DUID. The network interface is assumed to be permanently attached to the device.
Stateless DHCPv6 allows DHCPv6 to be used for configuring a node with parameters that do not require a server to maintain any dynamic state for the node. The use of stateless DHCP is controlled by router advertisement (RA) messages multicasted by routers.
The bindings are saved every 120 seconds.