Upload
others
View
2
Download
0
Embed Size (px)
Citation preview
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.
For internal circulation of BSNL only
For internal circulation of BSNL only
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.
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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)
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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.
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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 .
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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
For internal circulation of BSNL only
NIB II Generalized Node Layout for A cities
For internal circulation of BSNL only
Typical Connectivity
For internal circulation of BSNL only
NIB-II P2.2: Broadband Access Network
For internal circulation of BSNL only
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.
For internal circulation of BSNL only
Broad Band Access Network
• 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.
For internal circulation of BSNL only
Broad Band Access Network
• 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.
For internal circulation of BSNL only
Broad Band Access Network
• 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.
For internal circulation of BSNL only
• CPE: Customer Premises Equipment - Any xDSL
equipment (modem) provided by the customer at their
premises.
For internal circulation of BSNL only
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
For internal circulation of BSNL only
• 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”
For internal circulation of BSNL only
• Enhancements are done in following segments
• Access-ADSL2+,VDSL2,SHDSL, wifi and FTTH and
DSLAMs
• Core
• Distribution/Aggregation-RPR
For internal circulation of BSNL only
• 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
For internal circulation of BSNL only
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
For internal circulation of BSNL only
Broadband Multiplay A cities
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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
For internal circulation of BSNL only
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
For internal circulation of BSNL only
Continuous expansion
• Expansion is a continuous process hence many new
sites/ services are keep getting added.
For internal circulation of BSNL only
For internal circulation of BSNL only