Ch30-Implementing IPv6 Addressing on Routers

Question 1

Mode of operation in which a host or router runs both IPv4 and IPv6

Answer 1

dual-stack

Question 2

A standard for an extended unique identifier that is 64 bits long. Specifically for IPv6, a set of rules for forming the 64-bit identifier, used as the interface ID in IPv6 addresses, by starting with a 48-bit MAC address, inserting hex FFFE in the middle, and inverting the seventh bit

Answer 2

EUI-64

Question 3

A type of unicast IPv6 address that represents an interface on a single data-link. Packets sent to these addresss cross only that particular link and are never forwarded to other subnets by a router. Used for communications that do not need to leave the local link

Answer 3

link-local addresses

Question 4

With IPv6 multicasts, a term that refers to the parts (scope) of the network to which a multicast packet can flow, with link-local referring to the fact that the packet stays on the subnet in which it originated

Answer 4

link-local scope

Question 5

A type of IPv6 multicast address, with link-local scope, used to send packets to all hosts in the subnet that share the same value in the last six hex digits of their unicast address; Begins with FF02::1:FF/104

Answer 5

solicited-node multicast address

Question 6

A special anycast address in each IPv6 subnet, reserved for use by routers as a way to send packets to any router on the subnet. The value of the address is the same as the subnet ID

Answer 6

subnet router anycast address

Question 7

An address shared by two or more hosts that exist in different parts of the network, so that by design, the routers will forward packets to the nearest of the two hosts, allowing clients to communicate with the nearest one, not caring which particular host the client communicates

Answer 7

anycast address

Question 8

IPv6 makes extensive use of multicast addresses within the local scope (for overhead protocols in particular). What is the range of local-scope IPv6 multicast addresses?

Answer 8

FF08::/16

Question 9

What is the all-nodes multicast address? What does it refer to? What is its IPv4 equivalent?

Answer 9

1. FF02::1 2. all interfaces using IPv6 on the link 3. subnet broadcast address

Question 10

What is the all-routers multicast address? What does it refer to? What is its IPv4 equivalent?

Answer 10

1. FF02::2 2. All router interfaces using IPv6 on the link

Question 11

What IPv6 multicast addresses are used by OSPFv3? What are their IPv4 equivalents?

Answer 11

FF02::5, FF02::6 224.0.0.5, 224.0.0.6

Question 12

What IPv6 multicast address is used by RIPng? What is the IPv4 equivalent?

Answer 12

FF02::9, 224.0.0.9

Question 13

What IPv6 multicast address is used by EIGRPv6? What is the IPv4 equivalent?

Answer 13

FF02::A. 224.0.0.10

Question 14

What IPv6 multicast address refers to all routers acting as DHCP relay agents?

Answer 14

FF02::1:2

Question 15

What prefix defines IPv6 solicited node addresses

Answer 15

FF02::1:FF/104

Question 16

How is a solicited node address calculated?

Answer 16

1. Start with prefix FF02::1:FF/104
2. copy last six bits of GUA into remaining bits