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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?
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