Resolving Names Overview Multimedia: Introduction to the Name Resolution Process Viewing

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Module 3: Resolving Names Overview Multimedia: Introduction to the Name Resolution Process Viewing Names on a Client Configuring Host Name Resolution Configuring NetBIOS Name Resolution Multimedia: Introduction to the Name Resolution Process The objective of this presentation is to provide a high-level overview of the name resolution process in the network infrastructure After this presentation, you will be able to: Explain what a host name is Explain what a NetBIOS name is Describe how the name resolution process works Lesson: Viewing Names on a Client How Names Are Mapped to IP Addresses What Are Host Names? What Are NetBIOS Names? How to View Names On a...

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Module 3: Resolving Names
Overview Multimedia: Introduction to the Name Resolution Process Viewing Names on a Client Configuring Host Name Resolution Configuring NetBIOS Name Resolution
Multimedia: Introduction to the Name Resolution Process The objective of this presentation is to provide a high-level overview of the name resolution process in the network infrastructure After this presentation, you will be able to: Explain what a host name is Explain what a NetBIOS name is Describe how the name resolution process works
Lesson: Viewing Names on a Client How Names Are Mapped to IP Addresses What Are Host Names? What Are NetBIOS Names? How to View Names On a Client
How Names Are Mapped to IP Addresses Name Resolution Service Computer44 1 Where is the Where is the Computer44 Computer44 192.168.1.200 2 file? file? 3 Computer44 Computer44
What Are Host Names? A host name is the DNS name, of a device on a network, that is used to locate computers on the network Examples: “.” Root “.” Root FQDN msft msft server1.nwtraders.msft. nwtraders nwtraders Host Name DNS Suffix training training FQDN server1.training.nwtraders.msft. Server1 = 192.168.0.66 Server1 = 192.168.0.66 Host Name DNS Suffix Server1 = 192.168.0.67 Server1 = 192.168.0.67
What Are NetBIOS Names? A NetBIOS name is an identifier used by NetBIOS services running on a computer. It is made up of a 15-character name plus a 16th character (byte) denoting the service NetBIOS Name 16th character Services IP address Server2 00 Workstation 192.168.0.39 Server2 20 Server 192.168.0.39 Server2 01 Messenger 192.168.0.39 Server2 Server2
How to View Names on a Client Your instructor will demonstrate how to: View host names and DNS suffixes by using the Ipconfig utility View host names by using System Properties View NetBIOS names by using the Nbtstat command View your computer’s NetBIOS name by using System Properties Rename a computer
Practice: Viewing Names on a Client In this practice, you will view names on a client
Lesson: Configuring Host Name Resolution The Host Name Resolution Process Client Resolver Cache How to View and Flush the Client Resolver Cache Hosts File How to Preload the Client Resolver Cache by Using a Hosts File
The Host Name Resolution Process Client Resolver NetBIOS Cache/Hosts File DNS Name Cache WINS Broadcast Lmhost File 1 Salescomputer2 2 192.168.1.35 What is the What is the IP address for IP address for Salescomputer2? Salescomputer2? 3 Salescomputer2 Salescomputer2 Host name resolution is the process of resolving a host name to an IP address
Client Resolver Cache The client resolver cache is a location in memory that stores host names that have recently been resolved to IP addresses. It also stores host name- to-IP address mappings loaded from the Hosts file Computer1 Computer1 Resolved host names Resolved host names Hosts File Hosts File from the DNS server from the DNS server
How to View and Flush the Client Resolver Cache Your instructor will demonstrate how to: Display a client resolver cache by using the Ipconfig command Flush a client resolver cache by using the Ipconfig command
Hosts File The Hosts file is a static file that is maintained on the local computer and that is used to load host name-to-IP address mappings into the client resolver cache # Copyright (c) 1993-1999 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. Computer1 Computer1 # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a '#' symbol. # # For example: # Hosts File # 102.54.94.97 rhino.acme.com # source server Hosts File # 38.25.63.10 x.acme.com # x client host 127.0.0.1 localhost
How to Preload a Client Resolver Cache by Using a Hosts File Your instructor will demonstrate how to preload the client resolver cache by using a Hosts file
Practice: Configuring Host Name Resolution In this practice, you will configure host name resolution
Lesson: Configuring NetBIOS Name Resolution NetBIOS Name Resolution Process NetBIOS Name Cache How to View and Release the NetBIOS Name Cache Broadcasts Lmhosts File How to Preload a NetBIOS Name Cache by Using an Lmhosts File
NetBIOS Name Resolution Process NetBIOS Name Cache WINS Broadcast Lmhosts File Salescomputer2 1 192.168.1.35 2 What is the What is the IP address for IP address for Salescomputer2? Salescomputer2? 3 Salescomputer2 Salescomputer2 NetBIOS name resolution is the process of mapping a NetBIOS name to an IP address
NetBIOS Name Cache A NetBIOS name cache is a location in memory that stores NetBIOS names that have recently been resolved to IP addresses whether through a WINS server, broadcast, or Lmhosts file Computer1 Computer1 Broadcast Resolved host names Resolved host names from broadcasts from broadcasts Lmhosts File Lmhosts File Resolved host names Resolved host names from the WINS server from the WINS server
How to View and Release the NetBIOS Name Cache Your instructor will demonstrate how to: View the contents of the local computer’s NetBIOS name cache Release the NetBIOS name cache and reload the #PRE- tagged entries in the local Lmhosts file Display and view the NetBIOS name table of the local computer