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Lesson 05: IPv4 and IPv6 Addresses

Lecture notes are here.

Learning Objectives
  • Configure IP address options
  • Configure subnetting
  • Configure supernetting
  • Configure interoperability between IPv4 and IPv6
  • Configure ISATAP
  • Configure Teredo


6to4: An IPv4 to IPv6 transition mechanism that incorporates the IPv4 connections in a network into the IPv6 infrastructure by defining a method for expressing IPv4 addresses in IPv6 format and encapsulating IPv6 traffic into IPv4 packets.

Automatic Private IP Addressing (APIPA): A DHCP failover mechanism that automatically assigns an address on the network to the computer.
Classless Inter-Domain Routing (CIDR): A subnetting method that enables you to place the division between the network bits and the host bits anywhere in the address, not just between octets.

Dynamic Host Configuration Protocol (DHCP): A service that automatically configures the Internet Protocol (IP) address and other TCP/IP settings on network computers by assigning addresses from a pool (called a scope) and reclaiming them when they are no longer in use.

format prefix (FP): A sequence of bits that identifies the type of IPv6 address, just as an IPv4 address uses a sequence of bits to identify its class.

global unicast address: A type of IPv6 address that is the equivalent of a registered IPv4 address, routable worldwide and unique on the Internet.

Intra-Site Automatic Tunnel Addressing Protocol (ISATAP): An automatic tunneling protocol used by Windows operating systems that emulates an IPv6 link using an IPv4 network.

link-local unicast address: A type of IPv6 address that is the equivalent of an APIPA address in IPv4.
multicast address: A class D IP address that identifies a group of computers on a network, all of which possess a similar trait.

network address translation (NAT): A Network-layer routing technology that enables a group of workstations to share a single registered address.

proxy server: A type of intermediary—functioning at the Application layer—which is designed to forward specific types of traffic to destinations on the Internet.

scope: In DHCP, a range of IP addresses that the service dynamically assigns to clients as needed.

site-local unicast address: A type of IPv6 address that has been deprecated and is no longer in official use.
stateless address autoconfiguration: A process by which an IPv6 system self-assigns an address to each interface.

subnet mask: A 32-bit value consisting of binary 1 bits and 0 bits that, when compared to an IP address, indicate which are the network and which the host bits.

supernet: A group of contiguous networks that all contain a common CIDR prefix. 

Teredo: An IPv4 to IPv6 transition mechanism that enables devices behind non-IPv6 NAT routers to function as tunnel endpoints.

tunneling: A networking technique in which one protocol is encapsulated within another protocol. 
unique local unicast addresses: A type of IPv6 address that is the equivalent of a private network address in IPv4.