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For internal circulation of BSNLonly

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NIB OverviewNIB Overview


The turnkey implementation of “NationalInternet Backbone-Phase II” involved thefollowing projects

• Project-1 :

• MPLS based IP Infrastructure

• Project-2.1 :

• Narrowband Access (Dialup Remote Access)

• Project-2.2:

• Broadband Access (DSL Access)

• Project-3 :

• Messaging, Storage, Provisioning, Billing, Security, OrderManagement, Enterprise Management, AAA, Help Desk andInventory Management.

NIB II Project details


NIB-II envisages four projects

� MPLS based IP Infrastructure in 100 cities (29 city STM-16 core).

� Access Gateway platform Narrow band (Augmentation of existing Dial up Internet capacity.

� Access Gateway Platform Broadband in 235 cities (Based on ADSL Technology)

� Services Platform consisting of messaging, Provisioning, billing, customer care, enterprise management system and Data centres.

NIB-II

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

that will 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)

• It also offers SLA Reports including security, Qos and

any to any connectivity.

• Offers fully managed services to customers.

• It offers services like bandwidth on demand etc. over

the same network.

Objective of NIB-II



� 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

� The routers support value added services

such as VPNs, Web and content hosting,

Voice over IP, Multicast etc.

Objective of NIB-II


� Value Added Services

-Encryption Services

-Firewall Services

-Multicast Services

-Network Address Translation (NAT)

(Service that will enable private users toaccess public networks)

� Messaging Services

� Internet Data Centre Services atBangalore, Delhi and Mumbai.

Objective of NIB-II


� 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

Objective of NIB-II


M P L S I P

I N F R A S T R U C T U R E

( P r o j e c t 1 )


NIB-II CORE ROUTER A1 CITIES

Noida

For internal circulation of BSNLonly 10

Jullundar

Jaipur

Pune

Ahmedabad

Indore

Lucknow

Patna

Noida

Kolkata

Chennai

Banglore

Mumbai

ErnakulamHyderabad

NIB-II CORE ROUTER A1,A2,A3 CONNECTIVITY DIAGRAM

STM-16 LINK

A1 Nodes - 5

A2+A3 Nodes - 9A1 Router Cisco 12416

A3 Router Cisco 12410

A2 Router Cisco 12410


CORE ROUTER A1,A2,A3 &A4 CONNECTIVITY DIAGRAM

STM-16 LINK

STM-1 LINK

SiSi

CISCO ROUTER

JUNIPER ROUTER

(Existing with BSNL)

LEGENDS

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


Noida

CORE ROUTER A1,A2,A3 &A4 CONNECTIVITY DIAGRAM


•Edge routers in 100 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 Ahmadabad.

• 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 • B2 Cities- 26nodes

Edge Network (Customer Interface)


NIB-II A1,A2,A3,A4,B1& B2 ROUTER CONNECTIVITY DIAGRAM

A1 Nodes - 5

A2+A3 Nodes - 9

A4 Nodes - 10

B1 + B2 Nodes - 47

Jullundar

Jaipur

Pune

Ahmedabad

Indore

Lucknow

Patna

Noida

Kolkata

ChennaiBanglore

Mumbai

Ernakulam

Hyderabad

Chandigarh

Manglore

SiSi

Bhubneshwar

SiSi

Ranchi

Allahabad

SiSi

Coimbtore

Madurai

Trichy

Palghat

Trivandrum

Trichur

Kalikat

SiSi

Vijaywada

Rajmundary

Vizag

Tirupati

Durgapur

Siliguri

Dimapur

SiSi

Guwahati

Kalyan

Panjim

Aurangabad

Kolhapur

Nashik

SiSi

Nagpur

Bhopal

Gwalior

Mehsana

Ambala Faridabad Gurgaon

Meerut

Agra

Dehradun

Ludhiana

Ferozpur

Shimla

Amritsar

SiSi

SiSi

AjmerJodhpur

MysoreHubli

Jamshedpur

Surat

Vadodara

Rajkot

Jabalpur

Shilong

GhaziabadNoida

VaranasiKanpur

Pondicherry

Belgaum

SiSi

Raipur

SiSi


Devices in A1 Cities:

� Core Router ------------ Cisco12416

� Edge Router ------------ Cisco 7613

Devices in A2 & A3 Cities:

� Core Router ------------ Cisco12410


Devices in A4 Cities:

� Core Router ------------ Juniper M40e (Replaced by

Cisco12410)


Devices in B1&B2 Cities:


Routers at different locations


P RouterB1/B2 PE

IDC Edge

Local PE

(IPTAX)

STM-1

STM-1

STM-1

STM-1

GE

Intl GW

FE

Lin

k

RASRAS

IXP FE Link

NIB-1 POP

NIB I

Internet

BRAS

GE

GE

Customer Edge Router

FE link

GE link

STM-1 Link

STM-16

NIB-2 Project-1 Connectivity for A1,A2 & A3 Cities

GE

GE

RR

Core A1

NIB I

L4-L7 Switch

GE

GE

Tier 1Switch

NIB I &NIB II (2.1)

VPN/Leased Line

NIB IIProject 2.2Local PE

E1

7613 PE

B1/B2 PE

B1/B2 PE

B1/B2 PE

NIB IIProject 2.1 RAS

Switch

NIB IIProject 1

Customers

Leased Line Customers


NIB-2 Project-1 Connectivity for A4 Cities

FE Link

GE Link

STM-1

B1/B2 PEB1/B2 PE

7613 PE

STM-1

GE

FE

Lin

k

RASRAS

IXP

NIB-1 POP

Customer Edge RouterNIB I

NIB I &NIB II (2.1)

VPN

E1

BRAS

GE

GE

GE

Tier 1Switch

NIB IIProject 2.2

Core A4

Customers

Leased Line Customers

NIB IIProject 2.1 RAS

NIB IIProject 1

Switch


NIB II Node Layout for A1, A2 & A3 cities

Core

router

BB

BB RAS

RAS

METRO SDH RING

International

G/W router

IXPGWIn (A1Cities)

INTERNET

SW

STM -1

Tier 1 GigEAggregation

SW

GigEAdditional Edge

Router in city

Edge Router inB1 or B2 city

STM –1`

Core Network

Web

Cache

Internet Data centreat 3 places

IDC Routerat 3 places

GigE

GigEGigE

GigE

FE

FE

-

To leased lineCustomers

To ISPs

To Metro

Ethernet Fibre

network

FE

FE

RAS

NIB – 1router

RAS

NIB – 1router

E1s To PSTNExchanges


To leased line VPN customers



ADM

ADM ADM

ADMADM

E1s

NIB-I/NIB-II(2.1)To leased line customers

NIB-I/NIB-II(2.1)

FE

International Gateway

Edge router


NIB-II Node Layout for A4 cities

CoreRouter

Broadband RAS

METRO SDH RING

Edgerouter

STM -1

GigE

Additional EdgeRouter in city

Edge Router in

B1 or B2 city GigE

GigE

FE

-

To leased line customers To Metro

Ethernet Fibre network

FE

FE

RAS

RAS NIB-I/2.1



NIB – 1router

Tier 1 GigEAggregation

SW

Core Network



ADM

ADMADM

ADM


STM -1CE

To leased line customers

NIB – I/NIB-II(Project2.1)

NIB-I/NIB-II(2.1)

BB

FEFE

NIB-IIProject 2.2

RAS



NIB-II Node Layout for B1 & B2 cities

Edge

router

RAS

FE

-

To leased line Customers

Core Network

interfaces


Leased Lines& VPNs (E1s)

Customr’s edgerouter

NIB-I/NIB-II (2.1)


�Narrowband band Remote Access Server

(Total Control 1000 from M/S UT Strarcom)

�LAN Switch (3Com 4400 switch)

�eMS Server Common element Manager)

Components of Narrow Band Access Network


�Broad band Remote Access Server(BBRAS)

�Gigabit and Fast Ethernet Aggregation Switches (LAN Switches).

�Digital Subscriber Line Access Multiplexers (DSLAMs)

�SSSS/SSSC (Subscriber Service Selection System/ Centre)

�Servers for AAA, LDAP at NOC.

�Provisioning and configuration management at NOC.

�DSL-CPEs (MODEM)

Components of Broad Band Access Network


NIB-II Broadband DSL Deployment

ALTTC/DX/NIB-II Overview 25

Broadband RAS

480 PortDSLAM

SDH RINGGigE

GigE

GigE

Tier2 LAN Switch

NOTE: Items indicated in dottedline boxes are not part of Project 2.2

Corerouter

Gig E & FE

FE FE

FE

B1 city

120 Port DSLAM

48 Port DSLAM

ADSL terminals ADSL terminals ADSL

terminals

FE 100M

64 Port DSLAM

GE240 PortDSLAM

ADSL terminals

FE

24 Port DSLAM

FE

BB•

•ContentServer

•

SSSS

FE

B2 city

Core Network

Splitter

ADSL

From MDFMax 10/20 KMDark fiber

Tier1 Layer2GigE Aggregation

Switch


�The DSLAMs will in general be collocated with existing PSTN exchanges whichprovide last mile access to customers over copper wire up to average spanlengths of 3 kms.

�All DSLAMs will be aggregated through a FE interface except 480 port DSLAM,Which will be aggregated through Gigabit Ethernet Interface.

�The 240 port DSLAM will have two number of FE interface.

�The FX or GBIC module in DSLAM and LAN switch should be capable ofdriving upto 10km on a single mode fibre.

�The SX or GBIC module in LAN Switch used for connecting Tier2 to Tier1 willsupport 40km.

�In bigger cities like A1, A2, A3 and A4,one BBRAS per city will be deployedinitially.

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

�The DSLAMs in B1.B2 and other lower hierarchical cities will be aggregatedthrough Layer 2 switches, and will be connected to the nearest BBRAS of A citieson Ethernet over SDH.

�The BRAS shall terminate the PPP sessions initiated by the customer andextend the connection further to MPLS VPN/ Internet as desired by the thecustomer.

Architecture


BRAS Classification

Back plane Capacity

Processing Capacity TEC GR Reference

BRAS at A1 sites

8 Gbps full

duplex 15 Million PPS GR/RAS-03/01 OCT 03-High End

BRAS at A2 sites

4 Gbps full

duplex7 Million PPS

GR/RAS-03/01 OCT 03-Medium

End

BRAS at A3 sites

BRAS at A4 sites

3 Gbps full

duplex 3 Million PPS GR/RAS-03/01 OCT 03-Low End

BRAS classification


DSLAM

�The DSLAM will provide Access from 128Kbps to 8Mbps

�The DSLAM will support for QOS features such asCommitted Access Rate between CPE and DSLAM,T rafficPolicing per port

�The DSLAM will work satisfactory without any degradation inperformance and without using any repeater/regenerator overa distance for various access speeds for 0.5mm copper pair.

4.0 Kms1 Mbps

3.5 Kms2 Mbps

1.5 Kms6 Mbps

DistanceDownstream bit rate


�All the customer’s profile shall be storedcentrally.

�The SSSS/SSSC will act as a portal into theNetwork, where advertisements, automaticProvisioning, and Service registration will takeplace.

�The SSSS/SSSC will allow real time subscriberprovisioning and usage collection data.

�The SSSC will allow service provider to definenew services, modify the existing one and evendelete the offered services under authorised username and password.

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