Dynamic IP Addressing…

IP addresses... An Internet Protocol address (IP address) is a numerical

label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication.

An IP address serves two principal functions: host or network interface identification and location addressing. Its role has been characterized as follows: "A name indicates what we seek. An address indicates where it is. A route indicates how to get there.“

Eg. 172.16.254.1 (for IPv4), and 2001:db8:0:1234:0:567:8:1 (for IPv6).

There are two types of IP Addressing:

Dynamic IP Addressing. Static IP Addressing.

A numeric identification assigned to a node in a TCP/IP network.

When computers and devices in the network are turned on, they are assigned an IP address by a DHCP server.

A dynamic IP address is an automatically configured IP address assigned by a DHCP server to every new network node.

Introduction about Dynamic IP

Addressing...

Contd... The public IP address assigned to the routers of most

home and business users is a dynamic IP address.

Some Internet Service Providers assign "sticky" dynamic IP addresses that do change but less frequently than a typical dynamic IP address.

A DHCP server assigned IP address is called dynamic because it will often be different on each connection to the network.

Uses of dynamic address assignment... IP addresses are most frequently assigned dynamically

on LANs and broadband networks by the Dynamic Host Configuration Protocol(DHCP).

They are used because it avoids the administrative burden of assigning specific static addresses to each device on a network.

It also allows many devices to share limited address space on a network if only some of them will be online at a particular time.

In most current desktop operating systems, dynamic IP configuration is enabled by default so that a user does not need to manually enter any settings to connect to a network with a DHCP server.

DHCP is not the only technology used to assign IP addresses dynamically. Dialup and some broadband networks use dynamic address features of the Point-to-Point Protocol.

Contd...

DHCP...Clients should require no manual configuration by the user to connect to the network.› Each client should be able to discover appropriate

configuration information dynamically.› IP address, DNS servers, WINS servers, etc.

This is normally accomplished through the use of a Dynamic Host Configuration Protocol- › Uses UDP› Ports 67 and 68

DHCP› Requires little or no administrative overhead,

after initial configurations of the DHCP server.

› Dynamically maps IP addresses to MAC addresses.

› Addresses can be leased for a predefined amount of time before the lease expires and must be renewed by the client.

› Allows 30 configuration parameters.

Contd...

Features... Account Manager. Time Sync. Event Logging. Quick Start Guide. Connection Watcher.

Configuration Import/Export Utility.

Wildcarding.Multiple Internet Connection

Detection Methods.Ping/TraceRoute.

Contd...

Points...One of the primary reasons behind having dynamic IP addresses is the shortage of static

IP address on IPv4.

Dynamic IP addresses allow a single IP address to be shuffled between many different nodes

to circumvent this problem.

Static IP addressing is for one customer on one IP address.

Reliable. Reserved for statically

and don’t change over time.

Residential Internet connections, whether broadband or dialup usually use dynamic IP addresses.

Dynamic IP addressing assigns a different IP address each time the ISP customer logs on to their computer.

Less Reliable. Change each time you

connect to the Internet. Commercial leased lines and

servers have static IPs, so they can always be reached at the same address.

Static IP Address

Dynamic IP Address

Advantages... The biggest advantages of Dynamic IP Addressing

are less security risk as the computer is assigned a new IP address each time the customer logs on.

They are cost effective.

There is automatic network configuration (the less human intervention with network configuration the better).

Presented By:

1. Kalpesh Ambre.12. Mayuri Ghagare.13. Mitali Katkar.25. Shilpa Shettigar.

Reference…

http://www.dns2go.com/ http://www.answers.com/topic/dynamic-ip-a

ddress-technology http://www.speedguide.net http://www.techopedia.com http://en.wikipedia.org/

Thank You…!!!