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Module 4 Configuring Network Connectivity. Module Overview Configuring IPv4 Network Connectivity Configuring IPv6 Network Connectivity Implementing Automatic.

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Presentation on theme: "Module 4 Configuring Network Connectivity. Module Overview Configuring IPv4 Network Connectivity Configuring IPv6 Network Connectivity Implementing Automatic."— Presentation transcript:

1 Module 4 Configuring Network Connectivity

2 Module Overview Configuring IPv4 Network Connectivity Configuring IPv6 Network Connectivity Implementing Automatic IP Address Allocation Troubleshooting Network Issues

3 Lesson 1: Configuring IPv4 Network Connectivity What is an IPv4 Address? What is a Subnet Mask? What is a Default Gateway? What are Public and Private IPv4 Addresses? Demonstration: Configuring an IPv4 Address Types of Computer Names Methods for Resolving Computer Names

4 An IPv4 address identifies a computer to other computers on a network. What is an IPv4 Address? IP Address IP Address IP Address Subnet 2 IP Address IP Address IP Address Subnet 1 Dotted decimal representation of the address

5 What is a Subnet Mask? Subnet mask xwyz A subnet mask specifies which part of an IPv4 address is the network ID and which part of the IPv4 address is the host ID. This is a simple Class C type IPv4 number, see how 3 octets (255, 255, 255) are for the network ID and only 1 octet (0) is for the host ID Network ID xwyz Subnet mask xwyz Here is the network ID for this number. This network ID will be shared by all the hosts on the same subnet Network ID xwyz Subnet mask xwyz IP address xwyz And here is the host ID in the fourth octet. Note that this host ID is 1 of 254 hosts on this specific subnet

6 A default gateway is a device, usually a router, on a TCP/IP internet that forwards IP packets to other subnets. What is a Default Gateway? Use a default gateway when the internal routing table on the host has no information about the destination subnet. Router Default gateway Subnet 2 Windows 7 clients Subnet 1 Windows 7 clients

7 What are Public and Private IPv4 Addresses? Private Non-routable on the Internet Can be locally assigned by organization Must be translated to access the Internet Non-routable on the Internet Can be locally assigned by organization Must be translated to access the Internet Public Required by devices and hosts that connect directly to the Internet Must be unique Routable on the Internet Must be assigned by IANA Required by devices and hosts that connect directly to the Internet Must be unique Routable on the Internet Must be assigned by IANA

8 Demonstration: Configuring an IPv4 Address Your instructor will demonstrate how to configure a Windows 7 computer with: An IPv4 address A subnet mask A default gateway 10 min

9 Types of Computer Names NameDescription Host name Up to 255 characters in length Can contain alphabetic and numeric characters, periods, and hyphens Part of FQDN NetBIOS name Represent a single computer or group of computers 15 characters used for the name 16th character identifies service Flat namespace

10 NetBIOS Name Cache 4 4 WINS Server Broadcast 6 6 DNS Resolver Cache 2 2 Local Host Name 1 1 LMHOSTS File 7 7 DNS Server Methods for Resolving Computer Names DNS is the name resolution tool of choice for Windows 7 WINS is retained for backward compatibility The Global Domain Names feature can remove the need for WINS DNS is a service that manages the resolution of host names to IP addresses Domain Name System (DNS) Windows Internet Naming Service (WINS) WINS is a NetBIOS name server used to resolve NetBIOS

11 Lesson 2: Configuring IPv6 Network Connectivity Benefits of Using IPv6 Windows 7 Support for IPv6 What is the IPv6 Address Space? IPv6 Address Types Demonstration: Configuring an IPv6 Address

12 Benefits of Using IPv6 Benefits of using IPv6 compared to IPv4 Larger address space More efficient routing Simpler host configuration Built-in security Better prioritized delivery support Redesigned headers

13 Windows 7 Support for IPv6 IPv6 is Enabled by Default Windows 7 uses IPv6 by default to support security needs and additional features Windows 7 Dual Stack Windows 7 facilitates the dual stack to use IPv4 and IPv6 simultaneously Direct Access requires IPv6 Windows 7 clients can use Direct Access which facilitates client computers connecting to the enterprise domain IPv6 uses Remote Desktop IPv6 supports Windows 7 File Sharing Security and Echo System features such as Remote Access and Direct Access

14 The IPv6 address space: What is the IPv6 Address Space? Uses 128 bits as compared to 32-bits that the IPv4 address space uses Allocates 64-bits for the network ID and 64-bits for the host ID Uses a prefix to define the network ID Uses 128 bits as compared to 32-bits that the IPv4 address space uses Allocates 64-bits for the network ID and 64-bits for the host ID Uses a prefix to define the network ID 2001:0DB8:0000:0000:02AA:00FF:FE28:9C5A/ :DB8:0:0:2AA:FF:FE28:9C5A/64 Each digit represents four bits The prefix is a forward slash followed by the number of bits in the network ID 2001:DB8::2AA:FF:FE28:9C5A/64 Shorten Shorten the address by dropping leading zeros and using zero compression Continue shortening the address by dropping contiguous groups of zeros IPv6 uses hexidecimal notation

15 IPv6 Address Types Unicast – use for one-to-one communication between hosts Multicast – use for one-to-many communication between computers that are defined as using the same multicast address Anycast – use for locating services or the nearest router Unicast – use for one-to-one communication between hosts Multicast – use for one-to-many communication between computers that are defined as using the same multicast address Anycast – use for locating services or the nearest router IPv6 Unicast Address Types Global Unicast – globally routable and reachable on the IPv6 portion of the Internet Link-Local – use when communicating with neighboring hosts on the same link Unique Local Unicast – equivalent to IPv4 private address spaces, such as /8, and have the prefix FD00::/8 Global Unicast – globally routable and reachable on the IPv6 portion of the Internet Link-Local – use when communicating with neighboring hosts on the same link Unique Local Unicast – equivalent to IPv4 private address spaces, such as /8, and have the prefix FD00::/8

16 Demonstration: Configuring an IPv6 Address Your instructor will demonstrate how to: Manually configure a Windows 7 computer with an IPv6 address Verify the IP configuration 10 min

17 Lesson 3: Implementing Automatic IP Address Allocation Automatic IPv4 Configuration Process Automatic IPv6 Configuration Process Demonstration: Configuring a Computer to Obtain an IPv4 Address Dynamically Troubleshooting Client-Side DHCP Issues

18 Automatic private IP addressing (APIPA): Is used if a DHCP server cannot be contacted Assigns IP addresses on the /16 network Cannot be used with: Active Directory Internet connectivity Multiple subnets DNS or WINS servers Cannot be used with: Active Directory Internet connectivity Multiple subnets DNS or WINS servers IPv4 Client DHCP Server with IPv4 Scope and IPv6 Site Local Scope IPv6 Router Static Configuration IPv6 Client Automatic IPv4 Configuration Process

19 Automatic IPv6 Configuration Process IPv6 Client DHCP v6 Server with IPv6 Scope and IPv6 Site Local Scope IPv6 Router Static Configuration IPv6 Client

20 Notes Page Over-flow Slide. Do Not Print Slide. See Notes pane.

21 Demonstration: Configuring a Computer to Obtain an IPv4 Address Dynamically Your instructor will demonstrate how to: Automatically configure a Windows 7 computer with an IPv4 address Verify the IP configuration 10 min

22 Troubleshooting Client-Side DHCP Issues IPConfig is used to display IP configuration information and to release and renew addresses OptionDescription /allDisplays all IP address configuration information /release Releases a dynamic IPv4 address lease /renew Renews a dynamic IPv4 address lease

23 Notes Page Over-flow Slide. Do Not Print Slide. See Notes pane.

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26 Lesson 4: Troubleshooting Network Issues Tools for Troubleshooting Networks Process for Troubleshooting Networks Demonstration: Troubleshooting Common Network- Related Problems

27 Tools for Troubleshooting Networks ToolPurpose Event Viewer Enables you to view errors relating to network activity Windows Network Diagnostics Helps to diagnose and resolve network problems IPCONFIG Displays IP configuration information and controls the DNS resolver cache PING and PathPING Verifies basic IP connectivity TRACERT Verifies a routing path NSLOOKUP Enables testing of name resolution

28 Process for Troubleshooting Networks Windows Network Diagnostics Windows Network Diagnostics IPConfig NSlookup Tracert Ping

29 Demonstration: How to Troubleshoot Network- Related Problems Your instructor will demonstrate how to use the TCP/IP troubleshooting tools to help resolve common connectivity problems. 10 min

30 Lab: Configuring Network Connectivity Exercise 1: Configuring IPv4 Addressing Exercise 2: Configuring IPv6 Addressing Exercise 3: Troubleshooting Network Connectivity Logon information Estimated time: 40 minutes

31 Lab Scenario Laptop computers are being introduces for some of the managers in Contoso Corporation. You need to test how the IPv4 configuration will behave when they are out of the office and a DHCP server is unavailable. Contoso Corporation is considering the implementation of IPv6 in the internal network. However, noone in the organization has much experience with IPv6. You are performing some configuration tests with DHCPv6 to see how it behaves. A work experience student has been unsuccessful in attempting to resolve an network connectivity problem on a Windows 7 computer. The changes made to the computer have not been documented. You need to restore network connectivity for the computer.

32 Lab Review How are APIPA addresses for IPv4 similar to link-local addresses in IPv6? How can you update a Windows 7 computer to use the correct information after a host record is updated in DNS, but the Windows 7 computer is still resolving the name to the previous IP address?

33 Module Review and Takeaways Review Questions Tools

34 Notes Page Over-flow Slide. Do Not Print Slide. See Notes pane.


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