Basic Networking for DVR’s Instructor’s name : Everfocus Sales Rep

Index 1. Definition of a Network 2. Network Types 3. Network Devices 4. TCPIP Protocol 5. 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 telecommunicatio ns 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 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: DC-A1-BC-14 Desktop PC Laptop

Switch ØA common connection point for devices in a network. ØAdd functionality, optimize the LAN ØA hub or switch can contain multiple ports. ØThe 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 Configurations Example # 1. Without a RouterExample # 2 With a Router DVR Router/Switch PC RG59U cable ISP

Cable Modem Examples Example # 1. Without a Router Example # 2 Without a Router DVR Switch PC Multiple Dynamic IP address from the ISP. ( DHCP). Single Static or Dynamic IP address from the ISP. WAN IP address WAN IP address Note: Both Network devices must be on DHCP mode. RG59U cable ISP

DSL Modem Examples DVR Router/Switch PC Example # 1 DSL Modem/RouterExample # 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 10Base2 Thin 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 Protocol The 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 Protocol ØA 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. (

IP Addressing 255 Dotted Decimal Maximum NetworkHost Binary 32 bits Example Decimal

Decimal Equivalents of Bit Patterns = = = = = = = = =

IP Address Classes 1 Class A: Bits: 0NNNNNNN Host Range (1-126) 1 Class B: Bits: 10NNNNNN Network Host Range ( ) 1 Class C: Bits: 110NNNNN Network Host Range ( ) 1 Class D: Bits: 1110MMMM Multicast Group Range ( )

Class A IP Address 1 Class A: Bits: 0NNNNNNN Host Range (1-126) Network Host Available host :2 -2 = = 16,777,214 Examples 24 N

Class B IP Address 1 Class B: Bits: 10NNNNNN Network Host Range ( ) Network Host Available host :2 -2 = = Examples 16N

Class C IP Address 1 Class C: Bits: 110NNNNN Network Host Range ( ) Network Host Available host :2 -2 = =254 Examples 8N

Host Addresses E NetworkHost E0 Network Class BNetwork Class A Host Network

IP Address Examples  Valid IP Addresses Class C Class A Class B Class A Class B Non Valid IP Addresses

QUESTIONS?