Today Internet Addressing Internet protocol V6 Lab 9 : Configure DNS Server
description
Transcript of Today Internet Addressing Internet protocol V6 Lab 9 : Configure DNS Server
TODAYINTERNET ADDRESSINGINTERNET PROTOCOL V6LAB 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
Used by all modern operating systems, but not fully implemented
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.
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
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)
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
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
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
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
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
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
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_I
D2002::86AF:1B0A
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
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
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
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
IPV4 AND IPV6 COMPARISON
TCP/IP TROUBLESHOOTING UTILITIESTCP/IP Utility
Function When to Use
netstat Displays current TCP/IP and port statistics To determine network problems, monitor connections, and check for open ports
nbtstat Displays NetBIOS over TCP statistics To see a list of computers currently connected to the network
ping Sends a packet from one host to another and then echoes a return reply
To quickly check the state of network media between two hosts
tracert or traceroute
Sends a packet from one host to another and gathers statistics and information along the way
To troubleshoot the path to a distant destination
arp Maps the host MAC address to the host IP address
To verify IP address and MAC address assignments
nslookup Resolves domain names to IP addresses To find information about domain names and IP addresses
IN CLASS LAB 9
Labsim 5.3.4 Configure IP DNS Server (5 points)
NEXT CLASS
TCP/IP TroubleshootingExam 3 Review LabSim homework: 5.4-5.4.7