market scenario & bsnl status · lucknow patna noida kolkata banglore chennai mumbai ernakulam...

For internal circulation of BSNL only

E2-E3

E&WS

NIB-OVERVIEW

WELCOME

• This is a presentation for the E2-E3 Technical Module for

the Topic: NIB-Overview.

• Eligibility: Those who have got the Upgradation to E2 to

E3.

• This presentation is last updated on 21-3-2011.

• You can also visit the Digital library of BSNL to see this

topic.



AGENDA

Introduction

NIB Features

NIB Projects

NIB-II P1: Network Core Architecture

NIB-II P2.2: Broadband Access Network

Broadband Multiplay

NIB II P3

Introduction

• Core of BSNL’s Broadband service is National Internet

Backbone (NIB).

• NIB is a mission to build world-class infrastructure to

help accelerate the Internet revolution in India.

• It provides a diversified range of Internet access services

including support for VPN (Layer-2, Layer-3) and Dialup

and Broadband services.


NIB-Features

• Virtual Private Network(VPN) Services

– Layer2 MPLS VPN Services

• Ethernet over MPLS

• PPP over MPLS

• VPLS(Virtual Private LAN Service)

• Layer 2 any to any interworking

– Layer 3 MPLS VPN Services

• Intranet, Extranet Services

– Managed customer premises Equipment (CPE) Services

• Internet Access Services

– Dialup access services

– Leased access services-IP-VPN /MPLS-VPN based

– Digital Subscriber Line(DSL) access services

– Direct Ethernet access services


NIB-Features• Broad Band Services

Broadcast TV using IP Multicasting service Multicast video streaming services Interactive Distant learning using IP multicasting Services Video on demand Interactive gaming service

• Messaging Services-email, FTP etc.• Web Hosting & Content Hosting• Internet Data Centre Services at Bangalore, Delhi and

Mumbai.• Value Added Services

Encryption Services Firewall Services Multicast Services Voice Over IP Network Address Translation (NAT)

(Service that will enable private users to access public networks)


NIB-Features

• It also offers SLA Reports including security, QoS (quality

of service) and any to any connectivity.

• Offers fully managed services to customers.

• It offers services like bandwidth on demand etc. over the

same network.

• The network is capable of on-line measurement and

monitoring of network parameters such as latency,

packet loss, jitter and availability so as to support SLAs

with customers


NIB ProjectsName of Project Description

NIB-I (1997)

MPLS PILOT Project (2002)

10 city based PILOT project based on MPLS-VPN having Juniper routers

NIB-II

(2004)

Project 3 Services Platform consisting of Provisioning, Billing, Messaging, Customer care & Data Centres, Storage, Security, Order Management, Management, AAA, Help Desk and Inventory Management. (Assigned to BB Networks Circle)

Project 1 MPLS based IP Infrastructure (The backbone consisting of Core & Edge Routers) in 71 cities initially+ (NMS) + (PMS)(Assigned to STP) Vendor- HCL infosystems

Project 2.1 Narrowband Access (Dialup Remote Access) (Assigned to MH Circle) (71 cities) Vendor-UTStarcom

Project 2.2 Broadband Access(DSL Access) Gateway Platform(Assigned to Karnataka Circle) (198 cities initially) vendors – Huwaei & UTStarcom

Broadband Multiplay (2006)

Augmentation of NIB-II Project 2.2 services and elements. (Assigned to Karnataka Circle)vendors – UtstarCom(Dec2006), Siemens, ZTE, HFCL etc

Rural Broadband (2007)

Project based on requirement of rural areas(Assigned to Karnataka Circle). vendors –ZTE, Siemens etc.


NIB-I

• Started in 1997

• 6-Core Routers(A1-connected by 34 mbps)

fully meshed (A1 & A2 Cisco 7513-TierI)

• 8 A2 Routers-dual home to A1 by 4x2mbps

• B routers (Cisco 7507 in tier II) dual homed to A2 and

B/AI through 2x2mbps

• CI,CII,CIII – RAS cum Router by nx64kbps, usually

single link to B or A. Cisco AS 5800 Access Server (AAA)

• LAN Switch Catalyst Cisco 5500

• Servers-DNS,Billing,Proxy,Mail,FTP etc.

• E3(34 Mbps) gateway to VSNL at A1

• Help Desk at A(3 no) and B(1 No)locations


MPLS Pilot Project

• MPLS VPN network -10 cities

• Juniper Provider (P )Router M40e, Provider Edge (PE) M20.

• P or Core router connectivity at 5 cities Delhi, Mumbai,

Kolkata, Bangalore & Chennai.

• PE or Edge router acts customer network interface with

core routers.

• Customer Edge Router (CER) uses leased connection

extended through VMUX hops through various cities to

reach PE .


NIB-II Project

For internal circulation of BSNL only11

NIB2-PROJECT-1

MPLS CORE(MPLS-VPN,

Internet)

NIB2-PROJECT-2.1

NARROWBAND RAS

(Dialup Access)

NIB2-PROJECT-2.2

BROADBANDRAS

(DSL)

NIB2-PROJECT-3

OPERATIONS / BUSINESS SUPPORT SYSTEM & MESSAGING

Backbone

Access

Server/NOC

NIB-II P1:Network Core Architecture

• Cities in India have been classified in six types namely

A1, A2, A3, A4, B1, B2

• A1 – 5 Core cities

– Bangalore, Chennai, Mumbai, Delhi, Kolkatta

– Mesh Connected

• A2/A3 –3+6= 9 next level core cities

– Pune, Hyderabad, Ahmedabad, Ernakulam, Lucknow, Jaipur,

Indore, Jullundur, Patna

– Dual homed with A1

• A4 – 10 Major cities, dual homed with A1

• B1-21, B2-26= 47 in other cities.For internal circulation of BSNL only

NIB-II A1 Connectivity


NIB-II Core Router A1,A2,A3 &A4

Connectivity

For internal circulation of BSNL only 14

Jullundar

Jaipur

Pune

Ahmedabad

Indore

Lucknow

Patna

Noida

Kolkata

ChennaiBanglore

Mumbai

Ernakulam

Hyderabad

SiSi

Chandigarh

SiSi

Manglore

SiSi

Nagpur

SiSi

Vijaywada

SiSi

Raipur

SiSi

Coimbtore

SiSi

Bhubneshwar

SiSi

Ranchi

SiSi

Guwahati

SiSi

Allahabad

A1 Nodes - 5

A2+A3 Nodes - 9

A4 Nodes - 10

SiSi

JUNIPER/CISCO ROUTER

(Existing with BSNL)

CISCO ROUTER

LEGENDS

STM-16 LINK

NIB2 P1 Expansion & Year 2 Order Overview

• 29 locations added which makes the total cities to 100

• Core backbone is getting aligned to BSNL Transmission

(DWDM) network

• 24 City core network increased to 29

• All 29 city core network links are STM-16

• New 5 Cities are Belgaum, Dehradun, Rajkot, Jodhpur,

Jabalpur


Network Architecture

• IGW – International Gateway Router – Connectivity to

Internet is through this router

• IXP – Internet Exchange Point – ISP’s connect each

other through this router

• IDC – Internet Data Center – for connecting to BSNL

Data Centers

• B1 and B2 cities have only EDGE routers.

• All A cities locations have Core & colocated edge routers

• Primary Network Operating center at Bangalore and

Disaster Recovery is at Pune


NIB II Generalized Node Layout for A cities


Typical Connectivity


NIB-II P2.2: Broadband Access Network


Broad Band Access Network

• BBRAS: A Broadband Remote Access Server (BBRAS)

routes traffic to and from the digital subscriber line access

multiplexers (DSLAM) on an Internet service.

• First intelligent device in the whole chain. It terminates the

customer (PPP) session, authenticates, allots IP addresses

and keeps track of user session for billing alongwith RADIUS.

• It acts as an edge router for BB ADSL customers as well as

VPN traffic. IT carries out protocol conversions(labeling)

• BRAS will be installed in all the A sites.



• In bigger cities like A1, A2, A3 and A4, one BBRAS per

city will be deployed initially.

• There will be no BBRAS at B1 and B2 cities.

• The DSLAMs in B1.B2 and other lower hierarchical cities

will be aggregated through Layer 2 switches, and will be

connected to the nearest BBRAS of A cities on Ethernet

over SDH.

• The BRAS shall terminate the PPP sessions initiated by

the customer and extend the connection further to MPLS

VPN/ Internet as desired by the customer.



• Tier I/II Switch: Gigabit and Fast Ethernet Aggregation

Switches (LAN Switches).For aggregating multiple DSLAM

and providing a common uplink upto BRAS.

• Tier II LAN switch. The traffic from DSLAM’s is aggregated

by Tier II switches and is then further extended to Tier I

switch. The connectivity is on FE/GE.

• Tier I LAN switch, also called Giga bit aggregating switch,

aggregates traffic from Tier II switches & connects it to

BRAS

• Distance limit between DSLAM and Tier-II switch and Tier-II

to Tier-I switch is 10 Km and 40 Km respectively with dark

fibre.



• DSLAM: Digital Subscriber Line Access Multiplexer.

Specifically, a device that takes a number of ADSL

subscriber line and concentrates these.

• The DSLAMs will in general be collocated with existing

PSTN exchanges which provide last mile access to

customers over copper

• DSLAM has a built in splitter which splits voice and data.

• DSLAM’s of different capacities Viz 48 ports,128 ports

upto 480 ports etc & are aggregated towards Tier II LAN

switch using FE/GE on dark fiber.


• CPE: Customer Premises Equipment - Any xDSL

equipment (modem) provided by the customer at their

premises.


ADSL Variant

Standard Year Data Rates (Download)

ADSL G.992.1 June 1999 Upto 8Mb/s

ADSL2 G.992.3 July 2002 Upto 12Mb/s

ADSL2+ G.992.5 May 2003 Upto 26Mb/s

Frequency spectrum of ADSL


• The ADSL transmit signal consist of a large number ( up to 256) of

sub-carrier located at spacing of 4.3125 Khz.

• The channel 0 (0-4khz) is for POTS , Channel 1-5 are not used to

avoid interference between voice and data.

• POTS Channel - Separated by a POTS splitter

• Upstream/Downstream channels separated by either FDM using

LPF/HPF or a combination of FDM and echo cancellation . Echo

cancellation improves the BW throughput in the downstream.

•Chl 6-32 (30<f,138Khz) for uplink & Chl 33-256 (138<f,1104Khz) for

downlink

Broadband Multiplay

• Broadband Multi-Play focusses on the augmentation

of Broadband Access Network with planned capacity of

more than 6 millions supporting multi-play services like

Video on Demand, IP TV, VoIP, VPN service etc with

guaranteed control of critical parameters like latency,

throughput, jitter to ensure high grade delivery of real

time service, near real time, non real time and best

effort”


• Enhancements are done in following segments

• Access-ADSL2+,VDSL2,SHDSL, wifi and FTTH and

DSLAMs

• Core

• Distribution/Aggregation-RPR


• DATA BASED

– High Speed Internet access – Killer App.

– VPNs

• VIDEO BASED

– IP TV – BROADCAST

– VIDEO ON DEMAND- (Most Expensive to provide)

– Bandwidth on demand (User based / Service based)

– Conferencing

• VOICE BASED

– VOIP & NGN based


BW analysis

B.W. Requirement upto 480P DSLAM:

– Broadband traffic: 480 x 100 kbps = 50 Mbps

– VoD Traffic MPEG 4 (2 Mbps per Channel). 25% of the total

customer with 40% concurrency = 200 Mbps

– IPTV for 150 Channels with MPEG2 encoding (4 Mbps per

channel) = 600 Mbps

Total bandwidth required = 850 Mbps

Thus 1+1 GE is sufficient for upto 480P DSLAM

For 960P: 2+2 GE is taken


Broadband Multiplay A cities


MPLS

Nation wide

Core

Edge Server

RPR

Aggregation

Layer

MPLS

Layer

Broadband Network’

Gateway (BNG)

Tier 1 Sw

Tier 2 Sw

STM-16

Edge Server

10 G

RPR

10 G

RPR

PE Router

Mega POP

Regional Server

GE

Network Architecture in Other Cities


SDH RING

GE

OC city OC city

X-ge A

X-ge C

ADSL terminalsADSL

terminals

X-ge B

X-ge D

GE

Tier 1 LAN

Switch

BB

BNG GigE

Core

router

FE

Ethernet on

Dark fibre

Tier 2

OCLAN

Switch

RPR

To nearest A/B cities with BNG

Broadband Multiplay –New Elements

• RPR stands for Resilience Packet Ring• It combines the best of both worlds- Resilience and

performance of SDH rings & Traffic flexibility of Ethernet based packet networks

• Resiliency: 50 msec switchover• Better bandwidth efficiency

– Spatial Re-use – Statistical Multi Plexing – Better protection mechanism avoids wastes of resources.

• Quality of service– 3 traffic classes are supported, assuring that low latency services such

as voice and video are always given preferential treatment

• Better Fairness– Available bandwidth on the ring is distributed to all contributing source

stations

– Dynamic process reacting on actual traffic conditions


NIB-2 PROJECT-3 (Broad Scope)

• OSS (operations support system) for NIB-2 Project for:

– Service Fulfillment

– Service Assurance

– Service Billing

– Unified Security Framework for the OSS

– Automate the Business Processes

• MSS(Messaging Support System): to set up Network Elements

for offering

– Messaging with Anti-Virus and Anti-Spam

– Instant Messaging

– Web-Hosting & Web-Co-location Services

– Unified Prepaid/AAA Solution for IP Services

• BSS(Billing Support System): for common billing for

landline and broadband customers


Value Addition - Project-3

• Service Bundling

• Ability to offer innovative services

• Unified View of IP based Services (Pre & Postpaid)

• Single Window Service Provisioning for IP based services

• Automated End to End Provisioning

• Tracking Leads – Prospects – Customers

• Unified Support across services

• Unified Billing for IP Services


Continuous expansion

• Expansion is a continuous process hence many new

sites/ services are keep getting added.


market scenario & bsnl status · lucknow patna noida kolkata banglore chennai mumbai ernakulam...

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