Basic Networking for DVR’s

Instructor’s name : Everfocus Sales Rep

Index

1. Definition of a Network2. Network Types3. Network Devices4. TCPIP Protocol5. IP Addressing

Definition of a Network

What is a NETWORK? A network is a group of different devices

such as Computers Switches / Routers / Hubs

These devices can communicate directly with each other

These devices are referred to as “Common Points” or NODES

2 types of Networks LAN: Local Area Network WAN: Wide Area Network

Network Types:Local Area Network

Local Area Network (LAN) A group of computers and others devices that

share a common communications line or wireless link.

Typically share the resources of a single processor or server within a small geographic area.

LAN Example #1

LAN Example #2

PC1 PC2 PC3 PC4 DVR

8 port Switch

Office Building

Router

LAN Example #3

POS 1 POS2 POS3 PC1 PC2

Switch

Retail store

Router

DVR1

DVR2

PC3

Example of a Network

Wide Area Network

Networks that span the distance between buildings, cities and even countries.

WANs are LANs that are connected together using wide area Network services from telecommunications carriers or ISP.

The Internet is an example of a WAN

Wide Area Network (WAN)

Wide Area Network

WAN / LAN EXAMPLE

Modem

Home Computer System ( LAN)

Router

Remote Location

Example of a Remote Video Access

Router

DVR

Private Network

Public Network

NETWORK DEVICES

Common devices of a NetworkCommon devices of a Network

1. Network Interface Card or NIC

2. Hubs and Switches

3. Routers

4. Modems

5. Network Wiring

Network Interface Card ( NIC)

NIC is an acronym for NETWORK INTERFACE CARD

Provides network communication capabilities to and from a personal computer.

Also called a LAN (Local Area Network) Adaptor

Connects to the motherboard and provides a port for connecting to the network

Contains a MAC Address (Media Access Control address)

• This is the physical address of a device connected to a network

• Expressed as a 48-bit hexadecimal number• Example: 00-10-DC-A1-BC-14

Desktop PC

Laptop

Switch

Ø A common connection point for devices in a network.

Ø Add functionality, optimize the LAN

Ø A hub or switch can contain multiple ports.

Ø The most common type of interface used is ETHERNET

8 port Switch

16 port Switch

What is a SWITCH ?

Router

ØA ROUTER is a device that forwards data packets along networks.

ØA ROUTER is connected to at least TWO Networks, such as:

• Two LANs

• Two WANs

• A LAN and its ISP Network.

Ø ROUTERS are located at gateways, the places where two or more networks connect.

Ø ROUTERS keep the networks connected to the Internet.

What is a ROUTER?

Modems

A MODEM is a device that enables a computer or Network to transmit data over telephone or cable lines

TYPES• DIALUP: Usually used for low speed connection.

Requires a dial up phone connection• CABLE: A cable modem is a special type of modem

that is designed to modulate a data signal over a cable television infrastructure.

• DSL / ADSL: A DSL modem is a special modem used for broadband connections on a regular telephone lines

• DSL ROUTER: This router is a combination of a DSL modem and a Router in the same box. This router allows you the advantage of saving money and time

What is a MODEM?

Cable Modem ConfigurationsExample # 1. Without a Router Example # 2 With a Router

DVR DVR

Router/SwitchPC

RG59U cable ISP RG59U cable ISP

Cable Modem ExamplesExample # 1. Without a Router Example # 2 Without a Router

DVR DVR

Switch

PC

Multiple Dynamic IP address from the ISP. ( DHCP).

Single Static or Dynamic IP address from the ISP.

WAN IP address 64.45.20.6

WAN IP address 64.45.20.7

Note: Both Network devices must be on DHCP mode.

RG59U cable ISP

RG59U cable ISP

DSL Modem Examples

DVR DVR

Router/SwitchPC

Example # 1 DSL Modem/Router Example # 2 DSL Modem ( Plain)

DSL modem must be on Bridge Mode

Network Wiring

•Are vital to proper communication of the different network devices on the LAN.

•Allows Network components to communicate and transport communication signals with data across the network.

•Depending of the network components is important to determine and use the proper type of cable

Token Ring

CAT 5 . Ethernet

Coaxial BNC

10/100Base-T

Twisted pair

10Base2Thin Ethernet

IBM

Physical connections

UTP CONFIGURATIONS

A straight-thru is used as a patch cord in Ethernet connections

A crossover is used to connect two Ethernet devices without a hub or for connecting two hubs

10/100Base-T

Twisted pair

Cable Distances

TCP/IP Protocol

TCP/IP is and acronym for (Transmission Control Protocol / Internet

Protocol)

The basic communication language or protocol of the Internet.

It is been used as a communications protocol in a private network (either an intranet or an extranet).

What is a TCP/IP?

TCP/IP ProtocolThe function of the TCP/IP protocol stack is the

transfer of information from one network

device to another. Host

Internet

TCP/IP

Host

TCP IP ProtocolØA Protocol Graph illustrates some of the common protocols that are specified by the TCP/IP reference model.

ØThese applications include the following:

• FTP: File Transport Protocol• HTTP: Hypertext Transfer Protocol• SMTP: Simple Mail Transport protocol •DNS: Domain Name Service•TFTP: Trivial File Transport Protocol

Video Presentation

Warriors of the Net .

IP Addressing

An identifier for a computer or device on a TCP/IP network.

Explicit IP addresses are given to nodes that uniquely identify the particular network the system is on.

An IP address identify the system to a particular network

What is an IP ADDRESS?

IP Addressing

Registered IP addresses. Used and assigned to a host on the Internet

( WAN). Are registered and legal to use in a Public

Network. ( WAN)

Private IP addresses• Are not registered legal IP address. Can be

used only in private networks. ( LAN)

IP Addresses Types

Public IP addresses are regulated by American Registry for Internet Numbers. ARIN. ( www.arin.net)

IP Addressing

255 255 255

DottedDecimal

Maximum

Network Host

128 64 32 16 8 4 2 1

11111111 11111111 11111111 11111111

10101100 00010000 01111010 11001100

Binary

32 bits

172 16 122 204ExampleDecimal

1 8 9 16 17 24 25 32

128 64 32 16 8 4 2 1

128 64 32 16 8 4 2 1

128 64 32 16 8 4 2 1

255

Decimal Equivalents of Bit Patterns

0 0 0 0 0 0 0 0 = 0

1 0 0 0 0 0 0 0 = 128

1 1 0 0 0 0 0 0 = 192

1 1 1 0 0 0 0 0 = 224

1 1 1 1 0 0 0 0 = 240

1 1 1 1 1 0 0 0 = 248

1 1 1 1 1 1 0 0 = 252

1 1 1 1 1 1 1 0 = 254

1 1 1 1 1 1 1 1 = 255

128 64 32 16 8 4 2 1

IP Address Classes1

Class A:

Bits:

0NNNNNNN0NNNNNNN HostHost HostHost HostHost

8 9 16 17 24 25 32

Range (1-126)

1

Class B:

Bits:

10NNNNNN10NNNNNN NetworkNetwork HostHost HostHost

8 9 16 17 24 25 32

Range (128-191)1

Class C:

Bits:

110NNNNN110NNNNN NetworkNetwork NetworkNetwork HostHost

8 9 16 17 24 25 32

Range (192-223)1

Class D:

Bits:

1110MMMM1110MMMM Multicast GroupMulticast Group Multicast GroupMulticast Group Multicast GroupMulticast Group

8 9 16 17 2425 32

Range (224-239)

Class A IP Address1

Class A:

Bits:

0NNNNNNN0NNNNNNN HostHost HostHost HostHost

8 9 16 17 24 25 32

Range (1-126)

1 8 9 16 17 24 25 32

10. 1. 100. 5

124. 45. 125. 10

Network Host

Network Host

Available host :2 -2 = 2 - 2 = 16,777,214

Examples

24N

132. 10. 88. 51

182. 32. 1. 102

Class B IP Address

1

Class B:

Bits:

10NNNNNN10NNNNNN NetworkNetwork HostHost HostHost

8 9 16 17 24 25 32

Range (128-191)1 8 9 16 17 24 25 32

Network Host

Network Host

Available host :2 -2 = 2 - 2 = 65534

Examples

16N

Class C IP Address

1

Class C:

Bits:

110NNNNN110NNNNN NetworkNetwork NetworkNetwork HostHost

8 9 16 17 24 25 32

Range (192-223)

192. 168. 0. 5

220. 15. 0. 109

Network Host

Network Host

Available host :2 -2 = 2 - 2 =254

Examples

8N

Host Addresses

172.16.2.2

172.16.3.10

172.16.12.12

10.1.7.5

10.1.8.11

10.1.30.118

E1

172.16 12 12

NetworkHost

. .

172.16.2.1

10.1.7.1

E0

Network Class B Network Class A

10. 1. 30 118.

HostNetwork

IP Address Examples

Valid IP Addresses

192.168.1.100 Class C

24.45.78.125 Class A

168.26.41.40 Class B

10.1.1.15 Class A

69.45.90.90 Class B

255.255.255.255

169.255.255.255

127.0.0.0

•Non Valid IP Addresses

QUESTIONS?