What is enable DHCP PD?
DHCPv6 prefix delegation provides an automated method for a DHCPv6 client to request an IPv6 prefix from a DHCPv6 server. The DHCPv6 server assigns a prefix to the DHCPv6 client. The DHCPv6 client can use the delegated prefix to configure IPv6 addresses on other connected networks.
What is IPv6 prefix?
The IPv6 prefix concept is similar to IPv4 subnetting. An IPv6 address with a prefix is written as an IPv6 address followed by a decimal number representing the number of bits in the address that constitute the prefix. It is written as: ipv6-address/prefix-length.
Should I use DHCP PD?
DHCPv6 prefix delegation is useful when the delegating router does not have information about the topology of the networks in which the requesting router is located. In such cases, the delegating router requires only the identity of the requesting router to choose a prefix for delegation.
What is DHCP DP?
DHCP (Dynamic Host Configuration Protocol) is a network management protocol used to dynamically assign an Internet Protocol (IP) address to any device, or node, on a network so they can communicate using IP.
How to use DHCPv6 using the prefix delegation feature?
This document describes how to use the Prefix Delegation feature in order to configure the DHCPv6 (Dynamic Host Configuration Protocol for IPv6) server and client. This feature can be used to manage link, subnet, and site addressing changes.
How is DHCP used to configure an IPv6 address?
The DHCP client can then configure an IPv6 address on its LAN interface using the prefix it received. It will then send router advertisements including the prefix, allowing other devices to use autoconfiguration to configure their own IPv6 addresses. This feature can be useful in an ISP environment. Here’s an example:
Which is independent of address assignment with DHCP?
Overview of DHCP with Prefix Delegation Prefix delegation with DHCP is independent of address assignment with DHCP. A requesting router can use DHCP for just prefix delegation or for prefix delegation along with address assignment and other configuration information. A requesting router first creates an IA_PD and assigns it an IAID.
How does Cisco IOS XE DHCPv6 assign prefixes?
The Cisco IOS XE DHCPv6 server can assign prefixes dynamically from an IPv6 local prefix pool. When the server receives a prefix request from a client, it attempts to obtain unassigned prefixes from the pool. After the client releases the previously assigned prefixes, the server returns them to the pool for reassignment.