network devices

Network Devices : 

Network Devices Samar Singh Patel

Network Devices : 

Network Devices

Media on PC : 

Media on PC Ethernet Modem PC Card (WLAN) DVB

Ethernet - Architecture : 

Ethernet - Architecture

Ethernet – IEEE 802.3 : 

Ethernet – IEEE 802.3 10Base5 – Thick wire coaxial 10Base2 – thin wire coaxial / cheaper net 10BaseT – Twisted Pair 10BaseF – Fiber Optics 100BaseT – Fast Ethernet

Ethernet – 10Base5 : 

Ethernet – 10Base5

Ethernet – 10Base2 : 

Ethernet – 10Base2

Ethernet – 10BaseT : 

Ethernet – 10BaseT

NIC Connector type : 

NIC Connector type Coaxial Cable Bayonet Nut Connector (BNC) Twisted Pair Cable RJ-45 (8 wire) Fiber Optics SMA connectors

Modem : 

Modem Allows modems of different vendors to operate together Define How modems operate: Modulation techniques Data compression technique Error detection strategy

Modem – Analog vs Digital : 

Modem – Analog vs Digital Analog Infinite number of levels Conform to voice pattern Times from highest to lowest and back to the highest point in one second is the frequency Can be transmitted over long distance Digital Only two levels (high and low) Conforms to how computers operate Cannot transmitted over long distance

Modem - Connection : 

Modem - Connection

Modem – Internal/External : 

Modem – Internal/External

PC Card – WLAN (802.11) : 

PC Card – WLAN (802.11) Bypassing last mile

PC Card (WLAN) - 1 : 

PC Card (WLAN) - 1

PC Card (WLAN) - 2 : 

PC Card (WLAN) - 2

PC Card (WLAN) – Indoor Antena : 

PC Card (WLAN) – Indoor Antena

DVB – DVB/IP Tech : 

DVB – DVB/IP Tech The Digital Video Broadcast over Internet Protocol (DVB/IP) system is functionally an IP-over-Ethernet simplex satellite service that incorporates frame-relay type traffic management. At its core, DVB is a modem-on-a-chip, plus an intelligent multiplexer. The antenna is typically a CATV dish, 2.4 - 3.8 meters in diameter (for C-band), or 0.6 -1.8 meters (for Ku-band).

DVB – DVB/IP Routing : 

DVB – DVB/IP Routing

DVB - Adaptability : 

DVB - Adaptability

DVB – DVB Card : 

DVB – DVB Card

Media : 

Media Wired Twisted Pair – UTP Coaxial Fiber Wireless Microwave Satellite

Twisted Pair : 

Twisted Pair Two wired wrapped in a twisted fashion Designed to reduce cross-talk due inductance Still subject to interference from stray signal Primarily used for local loop connections and LANs Comparatively narrow bandwidth

UTP – Unshielded Twisted Pair : 

UTP – Unshielded Twisted Pair Pair 1 White/blue Blue Pair 2 White/Orange Orange Pair 3 White/Green Green Pair 4 White/Brown Brown RJ45 Connector

UTP – Straight Cable : 

UTP – Straight Cable Wo/O Wg/B Wb/G Wbr/Br

UTP – Cross Cable : 

UTP – Cross Cable Wg/G Wo/B Wb/O Wbr/Br

UTP - Category : 

UTP - Category

Coaxial : 

Coaxial Center lead conducts the signal Protected by insulation and braded wire Used mostly for television and connections to antenna Larger Bandwidth but large in size

Fiber Optical : 

Fiber Optical Signal transmitted by photos rather than electrons Dramatically higher bandwidth Used mostly for backbone communication connections, very high speed LANs and fast network connections

Microwave – Antenna (1) : 

Microwave – Antenna (1) Omni 2.4GHz 8dBi

Microwave – Antenna (2) : 

Microwave – Antenna (2) Sectoral 14dBi 180deg

Microwave – Antenna (3) : 

Microwave – Antenna (3) Sectoral 17dBi 90deg

Microwave – Antenna (4) : 

Microwave – Antenna (4) Direct (Grid) 2.4 GHz 24dB

Microwave – Power AMP : 

Microwave – Power AMP

Satellite - Broadband : 

Satellite - Broadband

Media Comparison : 

Media Comparison

Multiplexer : 

Multiplexer HUB Switch Bridge Router

Hub versus Switch : 

Hub versus Switch Hub provide connection to all ports (i.e. in one port and out all other ports). Passive hub – no signal regeneration Active hub – provide signal regeneration Switch direct the message from appropriate port (directs a message from the input port to the desired output port). More expensive but better bandwidth utilization

Hub versus Switch : 

Hub versus Switch

LAN Hub device : 

LAN Hub device

Hub : 

Hub

LAN Switch device : 

LAN Switch device

Switch : 

Switch

Bridge – Access Point (WLAN) : 

Bridge – Access Point (WLAN)

Router : 

Router Connecting different segment Have different interfaces (Ethernet, WAN-Serial, Fiber, etc) Table Routing

Router : 

Router

Slide 47: 

Samar Singh Patel Technical Trainer of IACM samar.patel2@gmail.com 09200973200