BroadBand NSW

8/13/2019 BroadBand NSW

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INTRODUCTION TO BROADBAND

Networking Basics

Overview Of NIB

Broadband Network

Installations Overview


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NETWORKING BASICS


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Computer Network

Computer network connectstwo or more autonomous

computers.

The computers can begeographically located

anywhere.


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Types of Networks

LAN, MAN, WAN

Network in small geographical Area (Room, Buildingor a Campus) is called LAN (Local Area Network)

Network in a City is call MAN (Metropolitan AreaNetwork)

Network spread geographically (Country or acrossGlobe) is called WAN (Wide Area Network)


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LAN - MAN


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WAN


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Network Topology


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Network Architecture

Peer-to-peer network


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Server-based network


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Client-based network


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Network Hardware

Network Interface Card

Ethernet NICs

10/100 NICs

100/100/1000 NICs


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Network Hardware

HUB

Hubs or repeaters


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Network Hardware

SWITCH

Types : L2 Switches, L3 Switches


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Network Hardware

REPEATERS


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Network Hardware

Bridge


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Network Hardware

ROUTER

Connect two or more networks

Forward data packets between Decision taking Device


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Network Hardware

Gateways

A gateway is like a super-intelligent router.

Gateways are designed to connect radically

different networks. Slower than a bridge or router

Perform complex functions such as interpreting both

protocol and bandwidth conversion Example - Messaging gateway, which converts

messages between different protocols.


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Overview ofNIB


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21

A1 + A2 + A3 POPsIP MPLS Core Network

STM - 16 Link

Cisco 12416 Router

Delhi

Kolkatta

Chennai

Bangalore

Mumbai

Lucknow

Patna

Core A3

Core A2

Core A3

Jullunder

Jaipur

Ahmedabad

Ernakulam

Mangalore

Core A3

Indore

Pune

Core (P)

Core A2 Cisco 12410 Router


Hyderabad

Core A3

Core A3

Core A1

Core A3

Core A1

Core A1

Core A2

Core A1

Core A2

Core A1


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A1 + A2 + A3 + A4 POPs

IP MPLS Core Network

STM - 16 Link

Cisco 12416 Router

Delhi

Kolkatta

Chennai

Bangalore

Mumbai

Lucknow

Patna

Core A3

Core A2

Core A3

Jullunder

Jaipur

Ahmedabad

Ernakulam

Mangalore

Core A3

Indore

Pune

Core (P)



Bhubaneshwar

Coimbatore

Hyderabad

Core A4

Core A4

Core A4

Core A4

Ranchi

GuwahatiCore A3

Core A3

Core A4

Allahabad

Core A1

Core A4

Core A3

Core A1

Core A4

Core A1

Core A2

Core A4

Nagpur

Chandigarh

Core A1

Core A4

Raipur

Core A2

Core A4

Vijayawada

Core A4 Juniper M40e Router

Core A1

STM - 1 Link


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Layer-2 Edge Network (Customer Interface)

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Edge routers in 71 cities connected to the core layer either

locally through the Gigabit Ethernet interfaces or remotely

through dual homed STM-1 links.

A1 Cities- Chennai ,Mumbai, Bangalore, Delhi and

Kolkata.

A2 Cities- Hyderabad, Pune and Ahmedabad.A3 Cities- Lucknow, Jullundhar, Jaipur, Indore, Ernakulam

and patna.

A4 Cities- Coimbatore, Chandigarh, Allahabad, Guwahati,

Ranchi,Bhubaneshwar, Raipur, Mangalore,Nagpur and Vijayawada.

B1 Cities- 21nodes (Vizag in A.P.)

B2 Cities- 26nodes (Rajamundry, Tirupati in A.P.)


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Devices in A1 Cities:

Edge Router ------------ Cisco 7613

Core Router ------------ Cisco12416

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Devices in A2 & A3 Cities:



Devices in A4 Cities:Core Router ------------ Juniper M40


Devices in B1&B2 Cities:Edge Router ------------ Cisco 7613


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Core A1 P Router

Remote

PERemote

PE

Remote

PE

B1/B2 PEB1/B2 PEB1/B2 PE

IDC

Edge

PE (M40e)Local

PE(IPTAX)

STM-1

STM-1

STM-1

STM-1

GE

L4-L7Sw

IntlGW

FEL

ink

NIB I

RASRAS

IXP FE Link

L3 Switch

NIB-1 POP

MPLS

IP Network

Area 0

Interne

t

BRAS

GE

GE

Customer

Edge

FE link

GE link

STM-1 Link

STM-16

BSNL NIB-2 Project1 Connectivity for A1 Cities (Chennai,Mumbai)

GE

GE

RR


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26

NIB-II Node Layout for B1 & B2 cities

Edge

router

RAS

Network

Interface (STM-1)

FE

E1s

To PSTN

exchanges

NIB -I

router

To leased line

customers


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Security Solution

AntiVirus Solution

Notification

Network Intrusion detection System

Control System

Self-protection

Resource protectionRights delegation

Program Controls

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NIB- II DSL Broadband deployment


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NIB II DSL Broadband deployment

BB

Broadband

RAS

480 Port

DSLAM

SDH RINGLayer 2 GigEAggregation

SW

GigE

GigE

GigE

LAN Switch

NOTE: Items indicated in dotted

line boxes are not part of Project 2.2

Core

router

Gig E & FE

FE FE

FE

B1 city B2 city

120 Port

DSLAM

48 Port

DSLAM

ADSL

terminals ADSL terminalsADSL

terminals

FE

64 Port

DSLAM

GE

240 Port

DSLAM

ADSL

terminals

FE

24 Port

DSLAM

FE

Content

Server

SSSS

FE


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Overview ofNIB


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A1 + A2 + A3 POPsIP MPLS Core Network

STM - 16 Link

Cisco 12416 Router

Delhi

Kolkatta

Chennai

Bangalore

Mumbai

Lucknow

Patna

Core A3

Core A2

Core A3

Jullunder

Jaipur

Ahmedabad

Ernakulam

Mangalore

Core A3

Indore

Pune

Core (P)



Hyderabad

Core A3

Core A3

Core A1

Core A3

Core A1

Core A1

Core A2

Core A1

Core A2

Core A1


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A1 + A2 + A3 + A4 POPs

IP MPLS Core Network

STM - 16 Link

Cisco 12416 Router

Delhi

Kolkatta

Chennai

Bangalore

Mumbai

Lucknow

Patna

Core A3

Core A2

Core A3

Jullunder

Jaipur

Ahmedabad

Ernakulam

Mangalore

Core A3

Indore

Pune

Core (P)



Bhubaneshwar

Coimbatore

Hyderabad

Core A4

Core A4

Core A4

Core A4

Ranchi

GuwahatiCore A3

Core A3

Core A4

Allahabad

Core A1

Core A4

Core A3

Core A1

Core A4

Core A1

Core A2

Core A4

Nagpur

Chandigarh

Core A1

Core A4

Raipur

Core A2

Core A4

Vijayawada

Core A4 Juniper M40e Router

Core A1

STM - 1 Link


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Layer-2 Edge Network (Customer Interface)

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Edge routers in 71 cities connected to the core layer either

locally through the Gigabit Ethernet interfaces or remotely

through dual homed STM-1 links.

A1 Cities- Chennai ,Mumbai, Bangalore, Delhi and

Kolkata.

A2 Cities- Hyderabad, Pune and Ahmedabad.A3 Cities- Lucknow, Jullundhar, Jaipur, Indore, Ernakulam

and patna.

A4 Cities- Coimbatore, Chandigarh, Allahabad, Guwahati,

Ranchi,Bhubaneshwar, Raipur, Mangalore,Nagpur and Vijayawada.

B1 Cities- 21nodes (Vizag in A.P.)

B2 Cities- 26nodes (Rajamundry, Tirupati in A.P.)


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Devices in A1 Cities:



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Devices in A2 & A3 Cities:



Devices in A4 Cities:Core Router ------------ Juniper M40


Devices in B1&B2 Cities:Edge Router ------------ Cisco 7613


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Core A1 P Router

Remote

PERemote

PE

Remote

PE

B1/B2 PEB1/B2 PEB1/B2 PE

IDC

Edge

PE (M40e)Local

PE(IPTAX)

STM-1

STM-1

STM-1

STM-1

GE

L4-L7Sw

IntlGW

FEL

ink

NIB I

RASRAS

IXP FE Link

L3 Switch

NIB-1 POP

MPLS

IP Network

Area 0

Interne

t

BRAS

GE

GE

Customer

Edge

FE link

GE link

STM-1 Link

STM-16

BSNL NIB-2 Project1 Connectivity for A1 Cities (Chennai,Mumbai)

GE

GE

RR


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36

NIB-II Node Layout for B1 & B2 cities

Edge

router

RAS

Network

Interface (STM-1)

FE

E1s

To PSTN

exchanges

NIB -I

router

To leased line

customers

NIB- II DSL Broadband deployment


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p y

BB

Broadband

RAS

480 PortDSLAM

SDH RINGLayer 2 GigEAggregation

SW

GigE

GigE

GigE

LAN Switch

NOTE: Items indicated in dotted

line boxes are not part of Project 2.2

Core

router

Gig E & FE

FE FE

FE

B1 city B2 city

120 Port

DSLAM

48 Port

DSLAM

ADSL

terminals ADSL terminalsADSL

terminals

FE

64 Port

DSLAM

GE

240 PortDSLAM

ADSL

terminals

FE

24 Port

DSLAM

FE

Content

Server

SSSS

FE


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Security Solution

AntiVirus Solution

Notification

Network Intrusion detection System

Control System

Self-protectionResource protectionRights delegationProgram Controls

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Network structure of BB


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Broadband = High Speed, High Capacity DataCommunication

Technologies -

DSL,Cable Modem,Ethernet,Fixed Wireless Access,Optical Fiber,W-LAN,V-SAT

Broadband Technologies



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Existing infrastructure

DSL over Copper loopCable Modem over Cable TV network

Power Line Broadband Access

New Infrastructure

Fiber To The Home (FTTH)

Hybrid Fiber Coaxial (HFC)

Wireless Infrastructure

Fixed Wireless Access (FWA)

Wireless LAN (Wi-Fi) (802.11)

V-SATIMT-2000 (3G Mobile)

High speed WLL


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xDSL

Digital Subscriber Line

Copper Loop Technology

What is DSL?


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Digital Subscriber Line (DSL)

Modem-like technology

Allows transmission of voice, video anddata over existing Copper telephone linesat Megabit Speeds.

Copper Lines - Local loop or the lastmilefrom the Exchanges.

What is DSL?

TYPES OF DSL


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DSL comes in several different varieties, which areknown collectively as xDSL.

ADSL (Asymmetric Digital Subscriber Line)

SDSL (Symmetrical Digital Subscriber Line)

HDSL (High bit-rate Digital Subscriber Line)

IDSL (ISDN Digital Subscriber Line)

VDSL (Very high bit-rate Digital Subscriber Line)

TYPES OF DSL


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Comparison of xDSL Systems

System Bandwidth

Up stream Down Stream

ADSL 16-640kbps 2-9 Mbps

HDSL 2-9 Mbps 2-9 Mbps

SDSL 2-9 Mbps 2-9 Mbps

VDSL 2-9 Mbps 13-53 Mbps

RADSL 128kbps-1 Mbps 600kbps-7 Mbps

What is ADSL ?


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Asymmetric Digital Subscriber Line - UsesG.dmt

Up to 8 Mbps bandwidth downstream and up to

1 Mbps upstream.Asymmetrical - Ideal for Internet/Intranet surfing,

video-on-demand and remote local area network(LAN) access.

Typically Download is more than Upload.

What is ADSL ?

ADSL DMT M d l ti


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ADSL DMT Modulation

Upstream

Frequency (KHz)

DownstreamVoice

0 4

256 frequency bands of sub-carriers of

4 KHz bandwidth and spacing of 4.3 KHz.

Each sub carrier can support maximum15 bits/Hz. Depending on signal to noise

Ratio for that sub carrier a decision is taken

How many bits that particular sub carrier can

Support. Each carrier can carry 0-15 bits/sec/Hz

Carriers 1-6 for voice and guardband

25 138 139

No

ofBits

15

1104

6 37

16

69 kHz

Upstream

Pilot Tone

64

276 kHz

Downstream

Pilot Tone

38 255

What is ADSL ?


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Splitter

To Separate Voice and Data

Enables the Voice and Data simultaneously.

Full rate ADSL - Maximum range of 18,000 feet (about3.4 miles, or 5.5 km) from the telecommunicationprovider company's central office to the end-user.

What is ADSL ?

B fit f ADSL


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Benefits of ADSL

Always on

Simultaneous Usage of Phone and Internet.

Speed Upto 9 Mbps

Dedicated Connection.

Connection is highly Secure, compared to shared-

media Cable Modem.


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Broadband Components DSL CPEs

DSL AM

LAN Switches : Tier-1 & Tier-2

BRAS RADIUS and LDAP

SSSS

Provisioning System

Broadband Network Interconnectivity Network elements


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Internet

TIER-1

TIER-2

DSLAMCPE

BRAS

SSSS

MULTIMODE FIBER

SINGLEMODE FIBER

UTP Cable

EMS

SSSC

CISCO S/WPMS

TIER-2

DSLAMCPE

Broadband Network Interconnectivity Network elements


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BSNL Broadband

MDF

CPE

LE

DSLAM

Splitter

Telephone

PC

230V

TV

STB

OFC


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Typical Connectivityfrom DSLAM

DSLAM

Splitter

ADSL eqpt.

Telephone

Broadband Access using ADSL


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21

Broadband Access using ADSL

INTERNET

PSTN

RouterDSLAM

CONTENT

PROVIDER

VIDEO ON

DEMAND SERVER

VIDEO ON

DEMAND SERVER

PHONE

INTERNET ACCESS

VIDEO ACCESS

ATM

SW


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DSLAM

MA5300 MA5105


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DSLAM

DSLAM: DSL Access Multiplexer.

- Built in splitter

- Voice - Normal conventional path through exchange

- Data is aggregated and up linked through

Ethernet Port(Gigabit Ethernet for 480 port and

Fast Ethernet for lower DSLAM)

TIER 1 and TIER 2 SWITCH


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TIER 1 and TIER 2 SWITCH

T 1 Switch

S8016

T 2 Switch

S6506R


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Tier SwitchSFC : Switching Fabric Cards

Data switching & clock1:1 Hot backup

E4GC : 4 nos.of GE optical

ports in each cards

: 7 nos. of such cards

EGFT : 16 nos.of FE optical

ports in each cards

: 2 nos. of such cards


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Broadband RASSFU :

Service Forwarding Unit

- Interface Card in slot 1&2 nos.each with 2 nos. of GE ports

( Tx 0dB; Rx25dB )

- Service Processing Unit (SPU )

in slot 3

SPU :System Processing Unit card in

slot 3

SMU :

Service Management Unit 2 nos.

( 1+1 ) hot standby in slot 9&10

Power supply

50v, D.C. 1000W

BRAS


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BRAS

Supports termination of DSL customers.

Allotment of IP address to customer

Bandwidth control using rate limiting

Act as an edge router for terminating VPNtraffic.

Protocols: OSPF, BGP, MP-BGP and LDP

Supports Lawful interception andmonitoring

BRAS Architect re


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BRAS Architecture

Deployed at the edge of the NIB-II network

Installed in all the A sites (except Mumbai).

Total 23

Capacity of 8 Gbps (in A1 sites) and 4 Gbps

(in other A sites)

Can handle 480000 concurrent sessions (A1

sites)

Broadband by BSNL


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Broadband by BSNL

480

BRAS

Tier 1

Tier 2

(Durgapur)

DSLAM240 120 64

GE

FE

CPE

Cu

CInternetSatellite TV

VoD server

1 11

GE FE FE

GEGEGE

Cu Cu Cu

GE

TX room

Switch room

STM Ring

FE

64

FE

Cu

FE

TIER-1 & TIER-2 LAN SWITCH CONNECTIVITY OF PUNE


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MKR

CHD

MHS

HDP

A2+A3 Nodes - 9

SiSi

SiSiSiSi

SiSi

SiSi

GE

Interface

GE

InterfaceGE

Interface

GE

Interface

Tier-1 LAN

Switch MKR

TIER-2

SWITCH

TIER-2

SWITCH

TIER-2

SWITCH

TIER-2

SWITCH


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CTO

A2+A3 Nodes - 9

SiSi

FE

Interface

FE

Interface

FE

Interface

FE

Interface

TIER-2

SWITCH

MHS(480 P)

Bhawani Peth(480 P)

CTY (480 P)

CANT(480 P)

DARK FIBER


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Customer Premises Installation


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Customer Premises Installation

Splitter ADSLRJ 11 RJ 11

RJ 11

RJ 11

RJ 45

Line

Single User withVoice and Data

Splitter ADSL

STB

RJ 11 RJ 11

RJ 11 RJ 45 RJ 45

RJ 45

AV Port

Single User withVoice, Data and Video

Line RJ 11

Splitter ADSL

Switch

Multi user Business

Customer

Line

RJ 11 RJ 11

RJ 11

RJ 45


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highpass

filter LINEDSL

lowpass

filter

TELE

Circuit Diagram of A POTS Splitter

Splitter

Separates the 300 Hz to 3500 Hzvoice channel from upstream anddownstream channels

Consists of a lowpass filter (LPF) forPOTS and a highpass filter (HPF) forupstream/downstream channels

Passive device

Contains lighting protection circuitry

CPE Installation


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CPE Installation

BRAS

CPE

PPPoE Session

T2 SwitchT1 Switch

Bridge Mode

DSLAM

IP Address is allocated

to PC By BRAS

Router Mode

BRAS

CPE

PPPoE Session

T2 SwitchT1 Switch

IP Address is

allocated to CPE

By BRAS

IP Address is

allocated

to PC By CPE

NATDSLAM

Multi User Customer


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Multi User Customer

BRAS

CPE

T2 Switch

T1 Switch

Bridge Mode

DSLAM


to PCs By BRAS

Mul ti User Customer

I f a user is allowed to login mul tiple sessions withBRAS with same password, every machine establ ishes

a separate PPPoE Session wi th BRAS. Every machine

Gets fu ll bandwidth f or that account provided CPE -

DSLAM L ink supports that.

Switch

ADSL Port on DSLAM Should

allow that many MAC addresses

CYBER CAFE


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CYBER CAFE

Router Mode

BRAS

CPE

T2 SwitchT1 Switch

DSLAM


to PCs By CPE

Mul ti User Customer

I n th is mode PPPoE is conf igur ed on CPE and only

One session i s establ ished between CPE and BRAS.

CPE gets I P Address from BRAS. DHCP in CPE

Allocates IP addresses to machines. I n thi s case all

The machines share the bandwidth all owed for that

Account. CPE has to do NAT also.

SwitchPPPoE Session

NAT


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Summary

Networking Basics

Overview Of NIB

Broadband Network



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Documents

BroadBand NSW