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Today Internet Addressing Internet protocol V6 Lab 9 : Configure DNS Server

Today Internet Addressing Internet protocol V6 Lab 9 : Configure DNS Server. IPv6. Referred to as a “ classless IP addressing scheme” because there is no need for a subnet mask Developed to overcome a possible shortage of available IP addresses

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Today Internet Addressing Internet protocol V6 Lab 9 : Configure DNS Server

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  1. TodayInternet AddressingInternet protocol V6Lab 9: Configure DNS Server

  2. IPv6 • Referred to as a “classless IP addressing scheme” because there is no need for a subnet mask • Developed to overcome a possible shortage of available IP addresses • Used by all modern operating systems, but not fully implemented

  3. IPv6 Advantages • Increases the number of available IP addresses • Reduces broadcast traffic • Improves security • Provides better quality of service than IPv4 • (Delivers certain packets in a timely fashion) packets containing video or audio do not have delays • IPv6 uses fewer packets to achieve the same results as IPV4 • Supports Neighbor Discovery– identifies network devices automatically.

  4. IPv6 Topography Terminology • Global address, - a unique internet address assigned by the IANA (Internet Assigned Numbers Authority • link-local– a portion of an organizations network • unique-local network entire organizations' network

  5. Types of IPv6 Addresses • Unicast address -Delivers packets to a single network address • Global unicast address • Link-local unicast • Site-local • Unique-local unicast • Special • Mulitcast address – delivers packets to multiple address AKA (many to one) • Anycast address – delivers packets to the nearest interface(supports router functions)

  6. Global Unicast Address • Similar to an IPv4 registered address • Scope is the entire Internet and local area network • Starts with 2000: or is written as 2000:/3

  7. Link-Local Unicast IPv6 Address • Used to communicate on the local area network • Will not be forwarded by a router • Serves the same function as an IPv4 APIPA address • Always starts with FE80 or FE80::64 • Required for the Network Discovery feature

  8. Unique-Local Unicast IPv6 Address • Replacement for site-local unicast address • Represents the entire network or just a portion • Can also represent multiple locations as long as the locations are part of the same network • Prefixed with FC00

  9. Site-Local Unicast IPv6 Address • Serves the same function as an IPv4 private address • Prefixed with FEC0 or FEC0::/10 • Not routable beyond the local area network • Routable between local-link section of the local area network

  10. Loopback Address • Is the reserved IP address for the NIC. It is used to test if an IP address of the NIC is functioning properly. • IPv6 loopback address • 0:0:0:0:0:0:0:1 or ::1 • IPv4 loopback address • 127.0.0.1 • IPv6 unspecified address • 0:0:0:0:0:0:0:0 or :: eliminates fields containing all 0’s • Equivalent to IPv4 address 0.0.0.0

  11. Local-Use Address Zone IDs • Used to indicate zones or geographical areas of a network • Geographical area can span one or more link-local sections of a lesser part of a site-local section • Zone IDs are located at the end of an IPv6 address and are indicated by a percent sign followed by a number: %10

  12. 6 to 4 • Supports network-to-network communications between routers • Solves compatibility issues between IPv4 and IPv6 • Unicast 6 to 4 address starts with global site prefix “2002” • Global_site_prefix:Subnet_ID:Interface_ID • 2002::86AF:1B0A

  13. Intra-Site Automatic Tunneling Address Protocol (ISATAP) • Designed to tunnel IPv6 addresses inside IPv4 packets at the data link layer. • Is a node-to-node and node-to-router technology • Used for IPv4 network devices to eliminate the need to upgrade. • Supports Neighbor Discovery • Uses the ICMPv6 protocol to discover routers • Implemented Windows XP and later operating systems

  14. Teredo • Configured by default in Windows Vista and Windows 7 • Used when ISATAP cannot be used • Functions as a (Network Address Translator) • Converts IPv4 public address to one or more private addresses • Does not require 6to4-enabled router that connects to Internet

  15. Broadcast and Multicast Addresses • Broadcast sends packets to all network addresses • Multicast sends packets to a specific set of addresses • IPv6 uses only multicast addresses • IPv4 uses both • Multicast is used for topology discovery, gateway discovery, and group discovery

  16. IPv6 Lifetimes • IPv6 addresses configured with two lifetime values • Valid lifetime – typically 1 week • Preferred lifetime – 1 day • Valid lifetime value is validated by a router • IPv6 address with a valid lifetime value can send and receive unicast messages • Preferred lifetime value time and interface can start a new communications session

  17. IPv4 and IPv6 Comparison

  18. TCP/IP Troubleshooting Utilities

  19. In class lab 9 Labsim 5.3.4 Configure IP DNS Server (5 points) Next Class TCP/IP Troubleshooting Exam 3 Review LabSim homework: 5.4-5.4.7

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