How to Manually Assign a Static IPv6 Address to a Router Interface

D

The correct command to manually assign a static IPv6 address to a router interface is:

D. ipv6 address 2001:db8:2222:7272::72/64

Let's break down the command and its components:

• "ipv6 address": This command indicates that we want to assign an IPv6 address to the interface.
• "2001:db8:2222:7272::72/64": This is the actual IPv6 address we want to assign to the interface. The address consists of two parts: the network prefix and the interface identifier. In this case, the network prefix is "2001:db8:2222:7272::/64" and the interface identifier is "::72". The "/64" at the end indicates that the network prefix has a length of 64 bits.

So, by using the "ipv6 address" command followed by the desired IPv6 address and its prefix length, we can manually assign a static IPv6 address to a router interface.

Let's take a look at the other options and why they are incorrect:

A. ipv6 address PREFIX_1::1/64 This command is missing the actual IPv6 address that we want to assign to the interface. "PREFIX_1" is just a placeholder and needs to be replaced with an actual IPv6 address.

B. ipv6 autoconfig 2001:db8:2222:7272::72/64 This command uses the "ipv6 autoconfig" feature to automatically configure an IPv6 address for the interface. However, the question asks for a manual assignment of an IPv6 address, so this is not the correct answer.

C. ipv6 autoconfig This command only enables the "ipv6 autoconfig" feature on the interface, but does not assign a static IPv6 address manually.

Therefore, option D, "ipv6 address 2001:db8:2222:7272::72/64", is the correct answer for manually assigning a static IPv6 address to a router interface.