E2-E3 E&WS NIB-OVERVIEW

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1 E2-E3 E&WS NIB-OVERVIEW

2 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 You can also visit the Digital library of BSNL to see this topic.

3 AGENDA Introduction NIB Features NIB Projects NIB-II P1: Network Core Architecture NIB-II P2.2: Broadband Access Network Broadband Multiplay NIB II P3

4 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.

5 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

6 Broad Band Services NIB-Features 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- , 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)

7 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

8 Name of Project NIB-I (1997) MPLS PILOT Project (2002) NIB-II (2004) Project 3 Project 1 Project 2.1 Project 2.2 Broadband Multiplay (2006) Rural Broadband (2007) NIB Projects Description 10 city based PILOT project based on MPLS-VPN having Juniper routers 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) MPLS based IP Infrastructure (The backbone consisting of Core & Edge Routers) in 71 cities initially+ (NMS) + (PMS) (Assigned to STP) Vendor- HCL infosystems Narrowband Access (Dialup Remote Access) (Assigned to MH Circle) (71 cities) Vendor-UTStarcom Broadband Access(DSL Access) Gateway Platform(Assigned to Karnataka Circle) (198 cities initially) vendors Huwaei & UTStarcom Augmentation of NIB-II Project 2.2 services and elements. (Assigned to Karnataka Circle)vendors UtstarCom(Dec2006), Siemens, ZTE, HFCL etc Project based on requirement of rural areas(assigned to Karnataka Circle). vendors ZTE, Siemens etc.

9 NIB-I Started in 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

10 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.

11 NIB-II Project Server/NOC NIB2-PROJECT-3 OPERATIONS / BUSINESS SUPPORT SYSTEM & MESSAGING Backbone NIB2-PROJECT-1 MPLS CORE (MPLS-VPN, Internet) Access NIB2-PROJECT- 2.1 NARROWBAND RAS (Dialup Access) NIB2-PROJECT- 2.2 BROADBAND RAS (DSL) 11

12 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.

13 NIB-II A1 Connectivity

14 NIB-II Core Router A1,A2,A3 &A4 Connectivity A1 Nodes - 5 A2+A3 Nodes - 9 Chandigarh Si Allahabad Si A4 Nodes - 10 Lucknow Si Jullundar Patna Guwahati Jaipur Si Noida Ranchi Si Ahmedabad Manglore Indore Mumbai Kolkata Si Bhubneshwar LEGENDS Si Nagpur Pune Banglore Chennai Si Coimbtore STM-16 LINK Ernakulam CISCO ROUTER Si Si JUNIPER/CISCO ROUTER (Existing with BSNL) Si Vijaywada Hyderabad Raipur 14

15 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

16 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

17 NIB II Generalized Node Layout for A cities

18 Typical Connectivity

19 NIB-II P2.2: Broadband Access Network

20 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.

21 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.

22 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.

23 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.

24 CPE: Customer Premises Equipment - Any xdsl equipment (modem) provided by the customer at their premises. ADSL Variant Standard Year Data Rates (Download) ADSL G June 1999 Upto 8Mb/s ADSL2 G July 2002 Upto 12Mb/s ADSL2+ G May 2003 Upto 26Mb/s

25 Frequency spectrum of ADSL The ADSL transmit signal consist of a large number ( up to 256) of sub-carrier located at spacing of 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 (138<f,1104Khz) for downlink

26 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

27 Enhancements are done in following segments Access-ADSL2+,VDSL2,SHDSL, wifi and FTTH and DSLAMs Core Distribution/Aggregation-RPR

28 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

29 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

30 Mega POP Broadband Multiplay A cities MPLS Nation wide Core MPLS Layer Regional Server Edge Server STM-16 Edge Server 10 G RPR 10 G RPR RPR Aggregation Layer GE PE Router Broadband Network For internal circulation of Gateway BSNL only (BNG) Tier 1 Sw Tier 2 Sw

31 Network Architecture in Other Cities Core router BNG BB GigE Tier 1 LAN Switch RPR FE SDH RING OC city OC city To nearest A/B cities with BNG Ethernet on Dark fibre Tier 2 OCLAN Switch GE X-ge C GE X-ge D X-ge A X-ge B ADSL terminals ADSL terminals

32 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

33 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

34 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

35 Continuous expansion Expansion is a continuous process hence many new sites/ services are keep getting added.

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