CCNA Dis1 - Chapter05 - Network Address [Compatibility Mode]

8/3/2019 CCNA Dis1 - Chapter05 - Network Address [Compatibility Mode]

1/28

1

Chapter 5 Network Addressing

PDF created with pdfFactory trial version www.pdffactory.com
http://www.pdffactory.com/http://www.pdffactory.com/http://www.pdffactory.com/


2/28

2

Objectives

Describe the purpose of an IP address and Subnet Maskand how they are used on the Internet.

Describe the types of IP Addresses available. Describe the methods of obtaining an IP Address.

Describe the use of NAT on a home or small businessnetwork using an Integrated Router.

Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com

http://www.bkacad.com/http://www.pdffactory.com/http://www.pdffactory.com/http://www.pdffactory.com/http://www.bkacad.com/


3/28

3

Purpose of the IP Address

A host needs an IP address to participate on the Internet. The IP address is a logical network address that identifies a particular host. It must be properly configured and unique in order to communicate with other

devices on the Internet.

An IP address is assigned to the Network interface connection for a host. Thisconnection is usually a network interface card (NIC) installed in the device.

Every packet sent across the Internet has a source and destination IP address.This information is required by networking devices to insure the informationgets to the destination and any replies are returned to the source.




4/28

4

IP Adress Structure

An IP address is simply a series of 32 binary bits (ones and zeros). The 32 bits are grouped into four 8-bit bytes called octets. Each octet is presented as its decimal value, separated by a decimal point or

period.

The 32-bit IP address is defined with IP version 4 (IPv4) and is currently themost common form of IP address on the Internet.




5/28

5

IP Adress Structure

Refer: 5.1.2.2; 5.1.2.3




6/28

6

Parts of an IP Address

The logical 32-bit IP address is hierarchical and is made up of two parts. The first part identifies the network and the second part identifies a host on that

network. Both parts are required in an IP address.




7/28

7

How IP Address and Subnet Mask Interact




8/28

8

How IP Adresses and Subnet Masks Interact




9/28

9

IP Adress Classes and Default Subnet Masks




10/28

10

Public and Private IP Address

All hosts that connect directly to the Internet require a unique public IPaddress.

Because of the finite number of 32-bit addresses available, there is a risk ofrunning out of IP addresses. One solution to this problem was to reserve someprivate addresses for use exclusively inside an organization. This allows hostswithin an organization to communicate with one another without the need of a

unique public IP address.




11/28

11

Public and Private IP Address

Refer: 5.2.2.2




12/28

12

Unicast, Broadcast and Multicast Address




13/28

13





14/28

14





15/28

15

Static and Dynamic Address Assignment




16/28

16

Static and Dynamic Address Assignment




17/28

17

DHCP Servers

Dynamic Host Configuration Protocol (DHCP) is a set of rules fordynamically assigning IP addresses to devices on a network. A DHCPserver manages and assigns the IO addresses and ensures that all IPaddresses are unique




18/28

18

Configuring DHCP




19/28

19

Configuring DHCP




20/28

20

Network Boundaries and Address Space




21/28

21

Address Assignment




22/28

22

Address Assignment

There are several ways hosts can be connected to an ISP and the Internet. Direct Connection Connection Through an Integrated Router Connection Through a Gateway Device




23/28

23

Netwok Address Translation (NAT)




24/28

24





25/28

25





26/28

26





27/28

27

Summary

IP addresses are unique 32-bit addresses grouped intofour 8-bit bytes called octets.

IP addresses use a two-part hierarchical structure ofnetwork bits and host bits.

IP addresses and subnet masks are used by routers todetermine the network location of hosts. IP addresses are grouped into classes according to the

number of bits used for designating the network, andfurther divided into public and private ranges.

Private IP addresses must be translated to public IPaddresses in order to move through the Internet.

IP addresses can be assigned statically or dynamically.




28/28

28Hc vin cng ngh thng tin Bach Khoa - Website: www.bkacad.com
http://www.bkacad.com/http://www.pdffactory.com/http://www.bkacad.com/

CCNA Dis1 - Chapter05 - Network Address [Compatibility Mode]

Documents

Transcript of CCNA Dis1 - Chapter05 - Network Address [Compatibility Mode]