Networking 2: IPv6 Router Interface Configuration

Questions and Answers

Which command is used to activate an IPv6 interface?

no shutdown (correct)

interface activation

ipv6 address ipv6-address/prefix-length

ipv6 enable

What is the significance of the first 64 bits in an IPv6 address?

They are used for routing as the network component. (correct)

They are used to globally identify devices.

They contain the subnet mask information.

They represent the link-local address.

Which command creates a static link-local IPv6 address?

ipv6 address ipv6-address/prefix-length link-local (correct)

ipv6 address ipv6-address/prefix-length eui-64

create link-local ipv6-address

ipv6 address ipv6-address/prefix-length global

How can an interface generate its own IPv6 link-local address?

By using the command ipv6 enable. Signup and view all the answers

What is the purpose of the lower 16 bits of the network component in an IPv6 address?

They are controlled by network administrators for subnets. Signup and view all the answers

Which of the following statements is true about IPv6 interfaces?

IPv6 devices must have at least one link-local address. Signup and view all the answers

What do the commands 'ipv6 address ipv6-address/prefix-length' and 'ipv6 address ipv6-address/prefix-length eui-64' have in common?

Both configure a global unicast IPv6 address. Signup and view all the answers

In IPv6 address structure, what is primarily indicated by the upper 48-bit section?

It is used for global network addresses. Signup and view all the answers

Study Notes

IPv6 Router Interface Configuration

IPv6 commands in Cisco IOS closely mirror those for IPv4, replacing "ip" with "ipv6."
Key steps for configuring an IPv6 router interface include:
- Assigning an IPv6 address and subnet mask using the command ipv6 address ipv6-address/prefix-length [link-local | eui-64].
- Activating the interface with the no shutdown command.
An interface can autonomously generate its IPv6 link-local address through the command ipv6 enable.
IPv6 interfaces can host multiple addresses, typically including at least one IPv6 link-local address and one global unicast address.
Each IPv6 interface may hold multiple global unicast addresses from the same subnet.

Creating IPv6 Addresses

To statically define IPv6 addresses, use the following commands:
- ipv6 address ipv6-address/prefix-length for global unicast addresses.
- ipv6 address ipv6-address/prefix-length eui-64 to create a global unicast address with an EUI-64 identifier.
- ipv6 address ipv6-address/prefix-length link-local to specify a static link-local address, overriding the automatically assigned one after enabling the global unicast address.

IPv6 Address Structure

IPv6 addresses consist of two main components: the network part and the node part.
The network component comprises the initial 64 bits, which are essential for routing purposes.
The node component occupies the remaining 64 bits, identifying the specific interface.
The network component can further divide into:
- A 48-bit global identifier responsible for global addressing.
- A 16-bit section managed by administrators for subnetting within an internal network.

Description

This quiz focuses on the configuration of an IPv6 router interface, emphasizing the similarities between IPv6 and IPv4 commands in Cisco IOS. You'll learn about setting up IPv6 addresses and the necessary commands for effective network configuration. Test your knowledge on networking principles and IPv6 specifics.