Wan Technology (Metro Ethernet,VSAT, 3G/4G,MPLS,ISDN,)

Wan Technology:-                             

                                                               Metro Ethernet

A Metropolitan Area Network (MAN) that uses High-speed Ethernet Connections

Characteristics:-

Ø  A MAN Technology

Ø  Based on Ethernet

Ø  Typically uses Fiber Optics

v  Advantages

Ø  Easily Connect with LANs

Ø  Less Expensive than Alternatives (like SONET)

v  Speed

Ø  10 Gbps

Ø  40 Gbps

Ø  100 Gbps

                                             VSAT

Very Small Aperture terminal (VSAT):- A WAN Technology that uses small satellite dishes installed at network locations for two-way communication via a Satellite

  Characteristics

Ø  Two-way satellite communication

Ø  Satellite dishes is less than 3 meters

Ø  Useful for location that cannot have wired internet connection

Ø  Data rates typically in the range of 56 Kbps – Mbps

Ø  Data experience more Delay

Ø  Sensitive to weather condition

Cellular 3G and 4G

The 3^rd and 4^th Generation of Cellular Phone technology that can transmit and receive the data

Characteristics

Ø  G = Generation

Ø  Standards define by the International Telecommunication Union Radio Communication Sector(ITU-R)

Ø  Long Term Evolution (LTE) is commonly offered as a “4G” Technology

Ø  Can provide Internet access to Mobile and Stationary Devices

 

MPLS

Multiprotocol Label Switching (MPLS):- Makes forwarding Decisions based on 20-bit Label and 32-bit Header

ISDN

Integrated Service Digital Network: - is a Digital Circuit Technology where a circuit is divided into logical B Channel (which Carry Voice, Video, Data) and D Channel (which carry Signaling Protocols)

	BRI	PRI
B Channel	2 -64 Kbps	T1 = 23 - 64  Kbps E1 = 30 - 64 Kbps
D Channel	1 – 16 Kbps	1 - 64 Kbps

Ø  BRI (Basic Rate Interface):- An ISDN circuit that contains two (64Kbps) B Channel and one (16 Kbps) D Channel

Ø  PRI (Primary Rate Interface):- :- An ISDN circuit that contains 23 (64Kbps) B Channel and One (64Kbps) D Channel on a T1,  or 30Kbps  B Channel and one D Channel E1

Ø  Q.921:- ISDN’s Layer 2 Signaling Protocols

Ø  Q.931:-ISDN’s Layer 3 Signaling Protocols