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- 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 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
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