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Questions and Answers

What is the total number of Core Routers in the MPLS network?

  • 120
  • 129 (correct)
  • 140
  • 150

    • Which of the following cities is NOT categorized under Node type A1?

  • Kolkata
  • Pune (correct)
  • Delhi
  • Chennai

    • What is the type of interface used to connect Layer - 1 nodes to Edge routers?

  • Fast Ethernet
  • Gigabit Ethernet (correct)
  • STM-64
  • T1Interface

    • What is the total number of Edge Routers in the MPLS network?

    <p>459</p> Signup and view all the answers

    Which Node type has the highest number of cities?

    <p>A4</p> Signup and view all the answers

    What is the function of the MPLS network?

    <p>To provide reliable routes to cover all possible designations</p> Signup and view all the answers

    What is the type of router used in Node type A4?

    <p>Juniper M40</p> Signup and view all the answers

    What is NIB-II setup by BSNL for?

    <p>To provide world class infrastructure for value added services</p> Signup and view all the answers

    What is the architecture of the Project 1 network?

    <p>2-layer centrally managed IP backbone</p> Signup and view all the answers

    What is the chapter on BSNL Data Network addressing?

    <p>Different projects for Data Network and Network Architecture</p> Signup and view all the answers

    What does MNG PAN stand for?

    <p>Multiplay Network Gateway for PAN India</p> Signup and view all the answers

    What is the significance of Project 1 and Project 3?

    <p>They are part of the projects for Data Network</p> Signup and view all the answers

    What is the goal of BSNL's Data Network?

    <p>To accelerate the Internet revolution in India</p> Signup and view all the answers

    What is Multiplay Broadband?

    <p>A value added service provided by BSNL</p> Signup and view all the answers

    How many chapters are there in the JTO Phase II DNIT?

    <p>13</p> Signup and view all the answers

    What are the three services provided to the customer in a triple play service?

    <p>Data, Voice, and Video</p> Signup and view all the answers

    What is the function of the Broadband Network Gateway (BNG)?

    <p>Connects Multiplay Network to NIB2 Backbone</p> Signup and view all the answers

    What is the total number of Metro Core Routers implemented as part of the Metro Ethernet Project?

    <p>12 routers implemented at 6 locations</p> Signup and view all the answers

    What is the purpose of the RPR Tier-1 Switch?

    <p>Provides connectivity from BNG to RPR Tier-2 Switch</p> Signup and view all the answers

    What is the function of the DSLAM?

    <p>Connects the broadband network to the customer premises</p> Signup and view all the answers

    What is the significance of the content network in the broadband multiplay project?

    <p>It provides various services like VOD, IPTV, and VOIP</p> Signup and view all the answers

    What is the type of router used at the A1 location of NIB2?

    <p>12410 and 12416</p> Signup and view all the answers

    What is the purpose of the L3PE in the broadband multiplay project?

    <p>It is the MCR/PE Router of NIB-2 Project 1 supplied by HCL</p> Signup and view all the answers

    What is the primary function of the Network Operation Center (NOC)?

    <p>To provide a single view of the entire network services being delivered countywide.</p> Signup and view all the answers

    How many Messaging and associated Storage systems will be set up in the 5 cities?

    <p>5</p> Signup and view all the answers

    What is the purpose of the Intrusion Detection System?

    <p>To detect and prevent unauthorized access to the network.</p> Signup and view all the answers

    What is the connection type used to connect the servers for the NOC?

    <p>Gigabit Ethernet link</p> Signup and view all the answers

    Where is the main NOC located?

    <p>Bangalore</p> Signup and view all the answers

    What is the benefit of the billing system?

    <p>It provides electronic versions of bills to customers over the Internet.</p> Signup and view all the answers

    What is the purpose of the Firewall?

    <p>To prevent unauthorized access to the network.</p> Signup and view all the answers

    What is the significance of the phased approach in the proposed system?

    <p>It enables the system to be upgraded in phases as the user base increases.</p> Signup and view all the answers

    What is the primary function of the Messaging Solution?

    <p>To set up a robust and scalable messaging system</p> Signup and view all the answers

    What is the purpose of the Storage Area Network (SAN)?

    <p>To store user mailboxes and billing data</p> Signup and view all the answers

    What is the architecture of the Messaging Solution?

    <p>High Availability architecture with no single point of failure</p> Signup and view all the answers

    What is the purpose of the LDAP servers?

    <p>To provide directory services for the messaging system</p> Signup and view all the answers

    What is the requirement for the storage devices used in the Storage Area Network (SAN)?

    <p>They should be compatible with servers from major companies such as HP, IBM, SUN, Dell etc.</p> Signup and view all the answers

    What is the purpose of the Messaging Servers?

    <p>To handle email messaging</p> Signup and view all the answers

    What is the benefit of the Storage Area Network (SAN) designed with an 'End to End High Performance Switched Architecture Fiber Channel SAN'?

    <p>It provides fast, reliable, and scalable storage</p> Signup and view all the answers

    What is the purpose of the Address Book Servers?

    <p>To provide address book services for the messaging system</p> Signup and view all the answers

    What is the purpose of the Firewall Appliances in the system?

    <p>To ensure security of the system from unauthorized access</p> Signup and view all the answers

    What is the function of the Network Operation Center (NOC)?

    <p>To centrally manage the network and provide end-to-end provisioning of multiple services</p> Signup and view all the answers

    How many Messaging and associated Storage systems will be set up in the cities?

    <p>5</p> Signup and view all the answers

    What is the primary function of the Layer-2 Edge network?

    <p>To enforce QoS and administrative policies</p> Signup and view all the answers

    What types of access does the Layer-2 Edge network provide to customers?

    <p>Both dedicated and broadband access</p> Signup and view all the answers

    What is the connection type used to connect the servers for the NOC?

    <p>Gigabit Ethernet link</p> Signup and view all the answers

    What is the purpose of the Load Balancers in the system?

    <p>To distribute workload evenly across multiple systems</p> Signup and view all the answers

    What technology does the network support for IP networking?

    <p>BGP/MPLS</p> Signup and view all the answers

    What is the significance of the MPLS-based IP network?

    <p>To integrate smaller open networks and sub-networks</p> Signup and view all the answers

    What is the benefit of the billing system?

    <p>It provides flexible billing depending upon the use of service</p> Signup and view all the answers

    What type of VPNs does the network support?

    <p>Both Layer-2 and Layer-3 VPNs</p> Signup and view all the answers

    Where is the main NOC located?

    <p>Bangalore</p> Signup and view all the answers

    How are Edge routers in cities connected to the Core layer?

    <p>Through either Gigabit Ethernet interfaces or dual homed STM-16/STM-1 links</p> Signup and view all the answers

    What is the purpose of the Intrusion Detection System?

    <p>To detect intrusions in the system</p> Signup and view all the answers

    What is the primary objective of setting up the MPLS-based IP network?

    <p>To provide convergent services integrating data, voice, and video</p> Signup and view all the answers

    What does the network provide to other domains?

    <p>Both peering interfaces and Internet Exchange</p> Signup and view all the answers

    What type of access does Direct Ethernet Access Services provide?

    <p>Always-on internet access</p> Signup and view all the answers

    What is the primary benefit of MPLS-based networks?

    <p>It enhances customer networking quality in a cost-effective way</p> Signup and view all the answers

    What is the primary function of the Layer 1 network in the Core Network?

    <p>High-speed packet forwarding between the core nodes</p> Signup and view all the answers

    What is one of the end-to-end data security features provided by JTO Phase II?

    <p>Encryption Services</p> Signup and view all the answers

    What is the function of the service-provider edge router in an MPLS network?

    <p>It labels the packets and routes them through its MPLS core to the edge closest to destination</p> Signup and view all the answers

    What type of VPN services are used for point-to-point connectivity between corporate LAN sites?

    <p>Layer 2 MPLS VPN Services</p> Signup and view all the answers

    What is the link bandwidth used in the dual mesh configuration of nodes?

    <p>STM-64/16</p> Signup and view all the answers

    How many cities are initially covered by Project 1?

    <p>71 cities</p> Signup and view all the answers

    Where are the Data Centre Services located in JTO Phase II?

    <p>Bangalore, Delhi, and Mumbai</p> Signup and view all the answers

    What is the purpose of IP/TCP connectivity in Project 1?

    <p>To provide only one connection from the customer's office router to a service-provider edge router</p> Signup and view all the answers

    What is the link bandwidth of the full mesh configured between the five major nodes?

    <p>STM-64</p> Signup and view all the answers

    What type of infrastructure is used in Project 1?

    <p>MPLS-based IP Network infrastructure</p> Signup and view all the answers

    What is the primary function of the Network Address Translation (NAT) Services?

    <p>To enable private users to access public networks</p> Signup and view all the answers

    What is the role of the Provider Edge (PE) router in Project 1?

    <p>To label the packets and route them through its MPLS core to the edge closest to destination</p> Signup and view all the answers

    What is the architecture of the NIB-II network?

    <p>Integrated 2-layer IP and MPLS network</p> Signup and view all the answers

    What is the benefit of using Provider (P) routers and Provider Edge (PE) routers in Project 1?

    <p>It enhances customer networking quality in a cost-effective way</p> Signup and view all the answers

    What is the primary function of the Layer-1 Core network in the MPLS network?

    <p>To provide high-speed backbone connectivity</p> Signup and view all the answers

    What type of interface is used to connect Layer-1 nodes to Edge routers?

    <p>Gigabit Ethernet</p> Signup and view all the answers

    What is the primary function of the Edge routers in the MPLS network?

    <p>To interface with customer networks</p> Signup and view all the answers

    What is the architecture of the Project 1 network?

    <p>A 2-layer centrally managed IP backbone network</p> Signup and view all the answers

    What is the significance of Node type A1 in the MPLS network?

    <p>It is used for high-speed backbone connectivity</p> Signup and view all the answers

    What is the primary function of the MPLS network?

    <p>To provide reliable routes to cover all possible designations within the country</p> Signup and view all the answers

    What is the significance of the Core routers in the MPLS network?

    <p>They are used for high-speed backbone connectivity</p> Signup and view all the answers

    What is the significance of the Edge routers in the MPLS network?

    <p>They are used for customer network connectivity</p> Signup and view all the answers

    What is the primary function of MNG-PAN switches?

    <p>To collect customer traffic and hand it over to the IP-MPLS core network</p> Signup and view all the answers

    What is the link bandwidth configuration of the remaining 9 nodes?

    <p>STM-64/16</p> Signup and view all the answers

    What technology is used in MNG-PAN for transport network of telecom services?

    <p>MPLS-TP (MPLS-Transport Profile)</p> Signup and view all the answers

    What is the reliability of MNG-PAN switches?

    <p>99.999%</p> Signup and view all the answers

    What is the primary benefit of MPLS-based IP networks?

    <p>Cost-effective way to enhance customer networking quality</p> Signup and view all the answers

    What type of routers are used to provide IP/TCP connectivity?

    <p>Provider (P) routers and Provider Edge (PE) routers</p> Signup and view all the answers

    Which of the following is a feature of MNG-PAN switches?

    <p>All of the above</p> Signup and view all the answers

    What is the purpose of labeling packets in an MPLS network?

    <p>To route packets through the MPLS core</p> Signup and view all the answers

    From which networks do MNG-PAN switches collect customer traffic?

    <p>MSAN, DSLAM, FTTx, Broadband Wireless Access, and 3/4G mobile network base stations</p> Signup and view all the answers

    How are MNG-PAN switches managed?

    <p>Centrally from the EMS deployed at NOC/DR-NoC</p> Signup and view all the answers

    What type of network infrastructure is initially covering 71 cities?

    <p>MPLS-based IP network infrastructure</p> Signup and view all the answers

    What is the purpose of the service-provider edge router?

    <p>To label and route packets through the MPLS core</p> Signup and view all the answers

    What type of traffic can MNG-PAN switches handle?

    <p>Both IPv4 and IPv6 traffic</p> Signup and view all the answers

    What is the purpose of MNG-PAN switches in the core network?

    <p>To aggregate and hand over traffic to the IP-MPLS core network</p> Signup and view all the answers

    What is the initial city-wise categorization of nodes based on?

    <p>Node type</p> Signup and view all the answers

    What is the goal of Project 1?

    <p>To deploy a MPLS-based IP network infrastructure</p> Signup and view all the answers

    What is the primary function of the MNG-PAN Aggregation Network?

    <p>To aggregate traffic from all nodes and hand over to the IP-MPLS core</p> Signup and view all the answers

    What is the significance of MPLS-TP in the network?

    <p>It enables internetworking between MPLS-TP and IP/MPLS domains</p> Signup and view all the answers

    What is the function of the COAU switch in the MNG-PAN architecture?

    <p>To connect to BNG or MPLS routers</p> Signup and view all the answers

    What is the purpose of the OC-PAN ring in the MNG-PAN architecture?

    <p>To aggregate traffic from all nodes and hand over to the MNG-PAN ring</p> Signup and view all the answers

    What is the benefit of using MPLS-TP in the network?

    <p>It enables internetworking between MPLS-TP and IP/MPLS domains</p> Signup and view all the answers

    What is the primary function of the PAN-COAU switch?

    <p>To aggregate traffic from all nodes and hand over to the IP-MPLS core</p> Signup and view all the answers

    What is the significance of the MNG-PAN architecture?

    <p>It supports future bandwidth up-gradation and enhancement in redundancy of the aggregation layer</p> Signup and view all the answers

    What is the function of the MPLS-TP packet aggregation network?

    <p>To aggregate traffic from all nodes and hand over to the IP-MPLS core</p> Signup and view all the answers

    What does the term 'Triple Play' refer to in the context of broadband services?

    <p>Providing data, voice, and video services to customers</p> Signup and view all the answers

    What is the function of the Broadband Network Gateway (BNG) in the broadband multiplay project?

    <p>To connect the multiplay network to the NIB2 backbone</p> Signup and view all the answers

    What is the purpose of the RPR Tier-1 Switch in the broadband multiplay project?

    <p>To provide connectivity from the BNG to the RPR Tier-2 Switch</p> Signup and view all the answers

    What is the role of the Metro Core Routers in the broadband multiplay project?

    <p>To provide access to the broadband multiplay network at A1 and A2 locations of NIB2</p> Signup and view all the answers

    What is the significance of the content network in the broadband multiplay project?

    <p>It provides various services like VOD, IPTV, and VOIP through specific content servers</p> Signup and view all the answers

    What is the function of the L3PE in the broadband multiplay project?

    <p>MCR/PE router supplied by HCL as part of the NIB-2 project 1</p> Signup and view all the answers

    What is the purpose of the DSLAM in the broadband multiplay project?

    <p>To provide connectivity to customers over digital subscriber lines</p> Signup and view all the answers

    What type of network does the broadband multiplay project use?

    <p>MPLS network</p> Signup and view all the answers

    What is the primary reason for bottleneck at aggregation network layer?

    <p>Heavy traffic from Access Network Layer</p> Signup and view all the answers

    What is the purpose of MNG-PAN?

    <p>To increase redundancy and capacity of the network</p> Signup and view all the answers

    What is the current uplink connectivity from RPR T1 to BNG?

    <p>1GE</p> Signup and view all the answers

    What is the issue with the RPR?

    <p>Low power issue</p> Signup and view all the answers

    What is the benefit of using MNG-PAN?

    <p>Stability in the network</p> Signup and view all the answers

    What is the current limitation of the RPR?

    <p>Only 1GE RPR at most places</p> Signup and view all the answers

    What is the reason for augmenting more uplinks between RPR T1 and BNG?

    <p>Limited number of ports at BNG</p> Signup and view all the answers

    What is the result of heavy traffic from Access Network Layer to Aggregation Network?

    <p>Bottleneck at aggregation network layer</p> Signup and view all the answers

    What is the primary function of the Core Network in the NIB-II architecture?

    <p>To enable high-speed packet forwarding between core nodes</p> Signup and view all the answers

    What type of services are provided by the Layer 2 MPLS VPN Services?

    <p>Point-to-point connectivity between corporate LAN sites</p> Signup and view all the answers

    What is one of the security features provided to customers in the NIB-II network?

    <p>Firewall Services</p> Signup and view all the answers

    What is the purpose of the Network Address Translation (NAT) Services in the NIB-II network?

    <p>To enable private users to access public networks</p> Signup and view all the answers

    What type of access is provided by the Direct Ethernet Access Services?

    <p>Broadband 'always-on-internet' access using Fiber-to-the-building</p> Signup and view all the answers

    What is the architecture of the NIB-II network?

    <p>Integrated 2-layer IP and MPLS network</p> Signup and view all the answers

    What is the function of the Core routers in the NIB-II network?

    <p>To enable high-speed packet forwarding between core nodes</p> Signup and view all the answers

    What type of nodes are configured in a full mesh with link bandwidth of STM-64 in the NIB-II network?

    <p>Nodes at Mumbai, Bangalore, Delhi, Kolkata and Chennai</p> Signup and view all the answers

    What is the primary function of the Layer-2 Edge network in the IP backbone network?

    <p>To enforce QoS and administrative policies</p> Signup and view all the answers

    What type of access does the Layer-2 Edge network provide to customers?

    <p>Dedicated and broadband access</p> Signup and view all the answers

    What technology does the network support for IP networking?

    <p>BGP/MPLS</p> Signup and view all the answers

    What type of VPNs does the network support?

    <p>Layer 2 and Layer 3 MPLS VPNs</p> Signup and view all the answers

    What is the significance of the MPLS-based IP network?

    <p>To provide a common IP infrastructure for smaller networks and sub-networks</p> Signup and view all the answers

    How are Edge routers in cities connected to the Core layer?

    <p>Through Gigabit Ethernet interfaces locally</p> Signup and view all the answers

    What is the role of the Layer-2 Edge network in providing QoS features?

    <p>To provide traffic shaping and traffic engineering features</p> Signup and view all the answers

    What is the primary objective of setting up the MPLS-based IP network?

    <p>To provide a common IP infrastructure for smaller networks and sub-networks</p> Signup and view all the answers

    What is the primary function of the Network Operation Center (NOC) in the proposed system?

    <p>To centrally manage the entire network services being delivered countywide.</p> Signup and view all the answers

    What is the key benefit of the billing system in the proposed system?

    <p>It offers flexible billing depending upon the use of service.</p> Signup and view all the answers

    What is the primary function of the Load Balancers in the proposed system?

    <p>To distribute network traffic across multiple servers.</p> Signup and view all the answers

    What is the significance of the phased approach in the proposed system?

    <p>It allows for the proposed user base to increase in a phased manner.</p> Signup and view all the answers

    What is the purpose of the Firewall Appliances in the proposed system?

    <p>To provide firewall security to the network.</p> Signup and view all the answers

    What is the connection type used to connect the servers for the NOC?

    <p>Gigabit Ethernet link</p> Signup and view all the answers

    Where are all customer databases residing centrally in the proposed system?

    <p>Centrally at NOC.</p> Signup and view all the answers

    What is the primary function of the Intrusion Detection System in the proposed system?

    <p>To detect and prevent intrusion attempts into the network.</p> Signup and view all the answers

    What is the primary purpose of the MPLS-based IP network in Project 1?

    <p>To provide reliable routes to cover all possible designations within and outside the country</p> Signup and view all the answers

    What type of interfaces are used to connect Layer-1 nodes to Edge routers in the Core Network?

    <p>Gigabit Ethernet interfaces</p> Signup and view all the answers

    What is the key characteristic of the Layer-1 Core network in Project 1?

    <p>It uses high-speed backbones (STM-64)</p> Signup and view all the answers

    What type of routers are used in Node type A4?

    <p>Juniper M40</p> Signup and view all the answers

    What is the architecture of the Project 1 network?

    <p>A 2-layer centrally managed IP backbone network</p> Signup and view all the answers

    What is the purpose of the Edge routers in the Project 1 network?

    <p>To provide access to customers</p> Signup and view all the answers

    What is the significance of the MPLS-based IP network in Project 1?

    <p>It provides reliable routes to cover all possible designations</p> Signup and view all the answers

    What is the primary function of the Core Network in Project 1?

    <p>To provide high-speed backbones</p> Signup and view all the answers

    What is the primary advantage of MPLS-based IP network in terms of customer networking quality?

    <p>Reduced cost due to fewer point-to-point circuits</p> Signup and view all the answers

    Which type of routers provide IP/TCP connectivity to customers in the MPLS network?

    <p>Provider (P) routers and Provider Edge (PE) routers</p> Signup and view all the answers

    What is the link bandwidth configuration for the remaining 9 nodes in the network?

    <p>STM-64/16</p> Signup and view all the answers

    What type of network architecture is used in Project 1?

    <p>MPLS-based IP network architecture</p> Signup and view all the answers

    What is the primary function of the edge router in the MPLS network?

    <p>To label packets and route them through the MPLS core</p> Signup and view all the answers

    What is the significance of the MPLS-based IP network in terms of customer connectivity?

    <p>Provides a single connection from the customer's office router to the service-provider edge router</p> Signup and view all the answers

    What is the network infrastructure covered under Project 1?

    <p>MPLS-based IP network infrastructure covering 71 cities</p> Signup and view all the answers

    What is the primary advantage of the MPLS-based IP network in terms of network management?

    <p>Simplified network management through a single connection</p> Signup and view all the answers

    Study Notes

    BSNL Data Network

    • Objectives of this chapter: understand different projects for Data Network, Network Architecture, Project 1 and Project 3, Multiplay Broadband, and MNG PAN.

    Network Architecture

    • Node types: A1, A2, A3, and A4, with different numbers of cities and specific devices (Core router - Cisco 12416, Edge Router - Cisco 7613, etc.)
    • MPLS network has 129 Core Routers and 459 Edge Routers.
    • 2-layer centrally managed IP backbone network designed to provide reliable routes.

    Network Architecture of Project 1

    • Layer - 1 Core network (A1, A2, and A3 cities) has high-speed Backbone (STM-64) and high-end fully redundant Core routers.
    • Layer - 1 nodes consist of high-end fully redundant Core routers and are interfaced to Edge routers through Gigabit Ethernet interfaces.
    • The system supports provisioning, billing, customer care, accounting platform, and billing for the complete range of IP-based services.

    Messaging Solution

    • Components: Messaging, DNS, AAA, MMP, LDAP, SMTP IN & OUT, Messaging Servers, Address Book Servers, etc.
    • Salient aspects: setting up a proven, robust, scalable Messaging Solution with best-in-class security components.

    Storage Platform

    • Components: SAN Switch & SAN Storage, Tape Library, Staging Servers, etc.
    • Fast, Reliable & Scalable storage devices are required for storing user mailboxes, billing data, etc.
    • Storage device should be compatible with servers from major companies like HP, IBM, SUN, Dell, etc.

    System Dimensioning

    • User base will be serviced through 5 Messaging and associated Storage systems in 5 cities.
    • Associated messaging system will be upgraded in phases correspondingly.

    Billing System

    • Capable of providing electronic versions of bills to customers over the Internet.
    • Creation/modification of service, processing Service requests in real-time and non-real-time, and accounting in real-time.

    Security Systems

    • Load Balancers, Firewall Appliances, Intrusion Detection System, Antivirus system, etc.

    Network Operation Center (NOC)

    • Provides facility for centralized Network Management and end-to-end Provisioning of multiple services.
    • The NOC shall have a single view of the entire network services being delivered country-wide.
    • The servers for the NOC shall be connected through a Gigabit Ethernet link from Core router with three zones of firewall within the Centre.

    Multiplay Broadband

    • Triple play service provides Data (Internet), Voice (VoIP), and Video.
    • Components: L3PE (MCR / PE Router), BNG (Broadband Network Gateway), RPR Tier-1 Switch, RPR Tier-2 Switch, OC LAN Tier-2 Switch, DSLAM, and DSL Tester.

    Metro Core Routers

    • Providing access to the Broadband Multiplay NW at A1, A2 locations of NIB2.
    • Total 12 routers implemented as Metro Ethernet Project.
    • 2 routers each at 6 locations (Bangalore, Chennai, Kolkata, Pune, Hyderabad, and Ahmedabad).

    JTO Phase II (DNIT) Overview

    • JTO Phase II (DNIT) is a data network and IT project that provides a comprehensive network infrastructure for BSNL data network.
    • The project aims to provide a common IP infrastructure that supports all smaller networks and sub-networks.

    Network Architecture

    • The network architecture consists of a 2-layer IP and MPLS network.
    • The Core Network (Layer 1) is a high-speed backbone network that provides packet forwarding between core nodes.
    • The Edge Network (Layer 2) provides customer access, enforces QoS, and supports MPLS edge functionality.

    Services

    • Direct Ethernet Access Services: provides broadband "always-on-internet" access using Fiber-to-the-building.
    • Layer 2 MPLS VPN Services: provides point-to-point connectivity between corporate LAN sites.
    • Layer 3 MPLS VPN Intranet and Extranet Services: provides LAN interconnectivity between multiple corporate LAN sites.
    • Managed Customer Premises Equipment (CPE) Services: provides managed CPE services to customers.
    • Value Added Services: includes encryption, firewall, and network address translation (NAT) services.

    Data Centre Services

    • Data centre services are available at Bangalore, Delhi, and Mumbai.

    Network Infrastructure

    • The network infrastructure is designed to provide IP network access, both on retail and wholesale basis, to DSL and leased access customers.
    • The network supports data, voice, and video applications over Layer 2 and Layer 3 MPLS VPNs.
    • The network provides a common IP infrastructure that supports all smaller networks and sub-networks.

    Node Configuration

    • There are 4 types of nodes: A1, A2, A3, and A4, each with different capabilities and configurations.
    • The nodes are configured in a full mesh with link bandwidths of STM-64.
    • The Edge routers in cities are connected to the Core layer either locally through Gigabit Ethernet interfaces or remotely through dual homed STM-16/STM-1 links.

    Messaging Services

    • The messaging services are provided through 5 messaging and associated storage systems that will be set up in 5 cities.
    • Each city is connected through the IP backbone.

    Security Systems

    • The security systems include load balancers, firewall appliances, intrusion detection systems, and antivirus systems.

    Network Operation Center (NOC)

    • The NOC provides a centralized network management and end-to-end provisioning of multiple services.
    • The NOC is connected to the Core router through a Gigabit Ethernet link with three zones of firewall within the Centre.
    • The NMS of NIB-II project 1 is the comprehensive NMS for entire NIB-II, including NIB-I, MPLS VPN.

    Service Level Agreement (SLA)

    • The network supports SLA, which ensures a certain level of service quality and performance.

    Project 1 Overview

    • Project 1 is an MPLS-based IP network infrastructure that initially covers 71 cities along with associated NMS, PMS, firewall, and caching platforms.
    • The project provides a cost-effective way to enhance customer networking quality by providing a single connection from the customer's office router to a service-provider edge router.

    JTO Phase II Data Network & IT

    • JTO Phase II (DNIT) Version 1.0 was released in Sep 2021 and is for restricted circulation.

    MNG-PAN

    • MNG-PAN (MPLS-Based Next Generation Packet Aggregation Network) incorporates MPLS-TP (MPLS-Transport Profile) technology for transport network of telecom services.
    • It is an advanced packet aggregation network solution designed for efficient multi-service aggregation of voice, video, and data traffic from various access technologies.
    • MNG-PAN collects customer traffic from different access broadband networks (e.g., DSL, FTTH, MSAN, 3G Node B, Wi-Max) and hands it over to the IP-MPLS core network.
    • The equipment supports bridging functionality between MPLS-TP and IP/MPLS domains.

    MNG-PAN Architecture

    • The typical architecture of MNG-PAN consists of PAN-COAU (Packet Aggregation Network – Central Office Aggregation Unit) switch and OC-PAN (Other City Packet Aggregation Network) switch.
    • The PAN ring aggregates traffic from all nodes and hands it over to the upper MNG-PAN ring.
    • The COAU switch of the PAN ring aggregates traffic from all PAN nodes and hands it over to the IP-MPLS core.

    Project 1

    • Project 1 involves deploying an MPLS-based IP network infrastructure covering 71 cities along with associated NMS, PMS, Firewall, and Caching platforms.
    • The initial city-wise categorization of nodes under NIB-II Project 1 is given in Table.

    Limitations of Existing Network

    • The existing network has bottlenecks at the aggregation network layer due to heavy traffic from access network layer (e.g., cascaded DSLAMs, BSNL OLTEs, Third Party OLTEs, RNC Node-B, WiFi hotspots, ILLs, etc.) to aggregation network.
    • Heavy traffic of OCLANs, cascaded OCLANs, and connected access network layer NEs aggregating to RPR also contributes to the bottleneck.

    Why MNG PAN

    • MNG PAN addresses the limitations of the existing network by:
      • Increasing redundancy and capacity of the network
      • Bandwidth up-gradation from 1GE to 10GE or 100GE with more number of uplinks to BNG
      • Rings of access network equipment are also possible
      • Stability in the network
      • Large network area coverage

    Broadband Multiplay Project Components

    • L3PE (MCR / PE Router of NIB-2 Project 1 – Supplied by HCL)
    • BNG – Broadband Network Gateway-Connects Multiplay Network to NIB2 Backbone (Project 1)
    • RPR Tier-1 Switch -Provides connectivity from BNG to RPR Tier-2 Switch
    • RPR Tier-2 Switch
    • OC LAN Tier-2 Switch
    • DSLAM
    • DSL Tester

    Metro Core Routers

    • Total 12 routers implemented as Metro Ethernet Project
    • 2 routers each at 6 locations:
      • Bangalore (A1) – 112416 and 112410
      • Chennai (A1) – 112416 and 112410
      • Kolkata (A1) – 112416 and 112410
      • Pune (A2) – 2*12410
      • Hyderabad (A2) – 2*12410
      • Ahmedabad (A2) – 2*12410

    JTO Phase II (DNIT) Overview

    • JTO Phase II (DNIT) is a data network and IT project that provides a comprehensive network infrastructure for BSNL data network.
    • The project aims to provide a common IP infrastructure that supports all smaller networks and sub-networks.

    Network Architecture

    • The network architecture consists of a 2-layer IP and MPLS network.
    • The Core Network (Layer 1) is a high-speed backbone network that provides packet forwarding between core nodes.
    • The Edge Network (Layer 2) provides customer access, enforces QoS, and supports MPLS edge functionality.

    Services

    • Direct Ethernet Access Services: provides broadband "always-on-internet" access using Fiber-to-the-building.
    • Layer 2 MPLS VPN Services: provides point-to-point connectivity between corporate LAN sites.
    • Layer 3 MPLS VPN Intranet and Extranet Services: provides LAN interconnectivity between multiple corporate LAN sites.
    • Managed Customer Premises Equipment (CPE) Services: provides managed CPE services to customers.
    • Value Added Services: includes encryption, firewall, and network address translation (NAT) services.

    Data Centre Services

    • Data centre services are available at Bangalore, Delhi, and Mumbai.

    Network Infrastructure

    • The network infrastructure is designed to provide IP network access, both on retail and wholesale basis, to DSL and leased access customers.
    • The network supports data, voice, and video applications over Layer 2 and Layer 3 MPLS VPNs.
    • The network provides a common IP infrastructure that supports all smaller networks and sub-networks.

    Node Configuration

    • There are 4 types of nodes: A1, A2, A3, and A4, each with different capabilities and configurations.
    • The nodes are configured in a full mesh with link bandwidths of STM-64.
    • The Edge routers in cities are connected to the Core layer either locally through Gigabit Ethernet interfaces or remotely through dual homed STM-16/STM-1 links.

    Messaging Services

    • The messaging services are provided through 5 messaging and associated storage systems that will be set up in 5 cities.
    • Each city is connected through the IP backbone.

    Security Systems

    • The security systems include load balancers, firewall appliances, intrusion detection systems, and antivirus systems.

    Network Operation Center (NOC)

    • The NOC provides a centralized network management and end-to-end provisioning of multiple services.
    • The NOC is connected to the Core router through a Gigabit Ethernet link with three zones of firewall within the Centre.
    • The NMS of NIB-II project 1 is the comprehensive NMS for entire NIB-II, including NIB-I, MPLS VPN.

    Service Level Agreement (SLA)

    • The network supports SLA, which ensures a certain level of service quality and performance.

    Project 1 Overview

    • Project 1 is an MPLS-based IP network infrastructure that initially covers 71 cities along with associated NMS, PMS, firewall, and caching platforms.
    • The project provides a cost-effective way to enhance customer networking quality by providing a single connection from the customer's office router to a service-provider edge router.

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    Related Documents

    W4_JTO_Ph2_Datacom_IT-part-1.pdf

    Description

    Index of JTO Phase II Data Network & IT chapters covering topics such as BSNL Data Network, MPLS Technology, and more. Test your knowledge of these chapters!

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