CCNA Exp1 - Chapter06 - Addressing the Network

8/4/2019 CCNA Exp1 - Chapter06 - Addressing the Network

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Chapter 6 - Addressingthe Network IPv4

CCNA Exploration version 4.0


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Objectives

Explain the structure IP addressing and demonstrate the abilityto convert between 8-bit binary and decimal numbers.

Given an IPv4 address, classify by type and describe how it isused in the network

Explain how addresses are assigned to networks by ISPs and

within networks by administrators Determine the network portion of the host address and explain

the role of the subnet mask in dividing networks.

Given IPv4 addressing information and design criteria, calculatethe appropriate addressing components.

Use common testing utilities to verify and test networkconnectivity and operational status of the IP protocol stack on ahost.


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IP Addressing Structure

Describe the dotted decimal structure of a binary IPaddress and label its parts


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Describe the general role of 8-bit binary in networkaddressing and convert 8-bit binary to decimal


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Practice converting 8-bit binary to decimal Refer to 6.1.3.1


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Binary To Decimal Conversion



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Decimal To Binary Conversion

Convert decimal to 8-bit binary



Decimal To Binary Conversion


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Decimal To Binary Practice




Convert IP address



Network portion and the role of the subnet mask

Describe how the subnet mask is used to create andspecify the network and host portions of an IP address



Network portion and the role of the subnet mask



Calculating Addresses



Classify and Define IPv4 Addresses

Name the three types of addresses in the network anddescribe the purpose of each type



Calculate address


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Host Address





Unicast, Broadcast and Multicast communication.



Public And Private Address



Link-Local Addresses IPv4 addresses in the address block 169.254.0.0 to

169.254.255.255 (169.254.0.0 /16) are designated as link-localaddresses. These addresses can be automatically assigned to the

local host by the operating system in environments where no IPconfiguration is available.

TEST-NET Addresses The address block 192.0.2.0 to 192.0.2.255 (192.0.2.0 /24) is set

aside for teaching and learning purposes. These addresses can beused in documentation and network examples.



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IPv4 Addresses Class


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Address Class Identification



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Default Subnet Masks



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Network & Host Identification



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Assigning Addresses

The allocation of these addresses inside the networksshould be planned and documented for the purposes: Preventing duplication of addresses.

Providing and controlling access.

Monitoring security and performance.


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Network Address Translation(NAT)


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Network Address Translation(NAT)


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Assigning Addresses - DHCP


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Assigning Addressess Manually configure


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Assigning Addresses

Explain which types of addresses should be assignedto devices other than end user devices


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IPv6 overview

128-bit hierarchical addressing - to expand addressingcapabilities.

Header format simplification - to improve packet handling. Improved support for extensions and options - for

increased scalability/longevity and improved packethandling.

Flow labeling capability - as QoS mechanisms. Authentication and privacy capabilities - to integrate

security.



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Assigning Addresses

Identify several changes made to the IP protocol inIPv6 and describe the motivation for migrating fromIPv4 to IPv6.


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CALCULATING ADDRESSES


C l l i Add


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C l l i Add


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C l l i Add


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C l l ti Add


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P ibl h t


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Possible hosts

C l l ti Add


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VLSM

Variable Length Subnet Masking


C l l ti Add


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C l l ti Add


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Calculate the number of hosts in a network rangegiven an address and subnet mask

VLSM Practice


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VLSM Practice


VLSM Practice


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VLSM Practice


VLSM Practice


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VLSM Practice


VLSM Practice


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VLSM Practice


VLSM Practice


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VLSM Practice


VLSM Practice


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VLSM Practice


VLSM Practice


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VLSM Practice


VLSM Practice


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VLSM Practice


Testing the Network Layer


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Describe the general purpose of the ping command,trace the steps of its operation in a network, and usethe ping command to determine if the IP protocol isoperational on a local host



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Use ping to verify that a local host can communicatewith a gateway across a local area network



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Use ping to verify that a local host can communicatevia a gateway to a device in remote network



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Use tracert/traceroute to observe the path betweentwo devices as they communicate and trace the stepsof tracert/traceroute's operation



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Describe the role of ICMP in the TCP/IP suite and itsimpact on the IP protocol



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ICMP is the messaging protocol for the TCP/IP suite.ICMP provides control and error messages and isused by the ping and traceroute utilities. AlthoughICMP uses the basic support of IP as if it were ahigher-level protocol ICMP, it is actually a separateLayer 3 of the TCP/IP suite.

The types of ICMP messages - and the reasons whythey are sent - are extensive. We will discuss some ofthe more common messages. ICMP messages thatmay be sent include:

Host confirmation Unreachable Destination or Service

Time exceeded

Route redirection

Source quench


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Documents

CCNA Exp1 - Chapter06 - Addressing the Network