modul12-IPv6 Addressing: Key Concepts and Types

<p>2000::/3 (D)</p> Signup and view all the answers

<p>NAT adaptations (C)</p> Signup and view all the answers

<p>To omit leading zeros in contiguous all-0 hextets. (B)</p> Signup and view all the answers

<p>/64 (C)</p> Signup and view all the answers

<p>It facilitates neighbor discovery. (A)</p> Signup and view all the answers

<p>To facilitate local link communication. (C)</p> Signup and view all the answers

<p>GUA and DNS/domain information. (D)</p> Signup and view all the answers

<p>show ipv6 interface brief (C)</p> Signup and view all the answers

<p>65536 (B)</p> Signup and view all the answers

<p>Stateful DHCPv6 only (A)</p> Signup and view all the answers

<p>EUI-64 uses a 64-bit number created from a MAC address. (A)</p> Signup and view all the answers

<p>It uses the default gateway specified in the message. (B)</p> Signup and view all the answers

<p>2001:db8:acad:0000:: (D)</p> Signup and view all the answers

A unique 64-bit identifier used in IPv6 addresses, generated either from the MAC address using EUI-64 or randomly.

A method for IPv6 addressing where hosts automatically configure their own addresses using information received from routers in Router Advertisement (RA) messages.

A method for acquiring IPv6 addresses and other network information from a DHCPv6 server that doesn't require the server to maintain state for each client.

A method for IPv6 addressing where hosts obtain their addresses and other network settings from a DHCPv6 server that maintains state information for each client.

An IPv6 address used for local communication within a single network segment. It's not routable outside the network.

The process of dividing an IPv6 address range into smaller subnets, each with its own subnet ID. IPv6 typically uses /64 subnets.

A Cisco IOS command used to display a summary of IPv6 addresses assigned to network interfaces, including both global unicast and link-local addresses.

A Cisco IOS command that displays the IPv6 routing table, showing the routes that the router knows how to use to reach other networks.

The main reason behind the move to IPv6 is the exhaustion of IPv4 addresses, which are 32-bit addresses. This means there are not enough public IPv4 addresses to support the growing demand for internet connectivity, particularly with the rise of the Internet of Things (IoT).

IPv6 addresses are 128 bits in length. They are represented as 8 hexadecimal groups (hextets) separated by colons. Each hextet is a 16-bit block, resulting in a total of 32 hexadecimal digits in an IPv6 address. For example, 2001:0db8:85a3:0000:0000:8a2e:0370:7334 is a valid IPv6 address.

Dual Stack is a method of transitioning to IPv6. It involves running both IPv4 and IPv6 simultaneously, allowing devices to communicate using both protocols. This is a gradual approach, enabling smooth migration without causing disruption to existing networks.

A global unicast address (GUA) in IPv6 is a globally unique and routable address. This means it can be used to communicate with any device on the internet. GUAs typically use a /64 prefix, where the first 64 bits represent the network and the last 64 bits represent the interface ID.

The interface ID is the unique identifier for a specific network interface on a device. It is usually 64 bits long and is used to differentiate devices on the same network. In IPv6, the interface ID is typically generated using the EUI-64 method, which uses the device's MAC address to create a unique ID.

Multicast addresses in IPv6 are used to send data to multiple recipients at the same time. IPv6 has two major types: assigned multicast and solicited-node multicast. Assigned multicast addresses are well-known, like ff02::1 (all nodes) or ff02::2 (all routers). Solicited-node multicast is used for neighbor discovery, with addresses like ff02::1:ffxx:xxxx.

Anycast addresses in IPv6 are assigned to multiple devices, but a packet sent to an anycast address is routed to the nearest device with that address. This is similar to broadcasting, but the nearest device is selected instead of all devices. However, anycast is a complex topic and often not tested in exams.