SWAN

The Uttarakhand State Wide Area Network is in operation since 2008-2009. It is serving as a state information high way for various departments of Government of Uttarakhand. ITDA is planning to upgrade the network to more robust and secure network. The Upgraded Uttarakhand State Wide Area Network aims to provide more reliable and secure network services to Government offices by providing WAN services using MPLS technology within the network and that of the bandwidth service provider and LAN services in important Government buildings. The vision of the project is to establish a State Information Network Highway by setting up a single unified cost-effective with redundancy framework that can be remotely managed, monitored centrally. The technology implemented would help in bandwidth load balancing for optimal use and sharing of available Bandwidth. The upgraded UKSWAN needs to be secure and reliable State Wide Area Network and Local Area Network so as to bring the advantages of a connected Government to its citizens regardless of their location in the state and to make the working of the Government more efficient and transparent. UKSWAN upgraded network will connect entire state through dedicated links of BSNL and secondary link from alternative service providers and is envisaged as the backbone network for data, voice and video communications across the state. The project should be able to enable “Secure and always Connected Government” that would transform the way the Government interacts with its citizens.

The broad objectives of the Project are:

  • To create a plug and play/connect environment for all Government departments/ Boards.
  • To provide a highly reliable, robust and secure communication network.
  • To facilitate Governments to go for centralised architecture for their e-Government applications so as to decrease total cost of ownership.
  • To create single unified effective Intranet and secure internet facilities for the Government thereby facilitating effective communication and creating less paper environment.
  • To facilitate electronic delivery of Government services to citizen (G2C), Government to Businesses services (G2B), Government to Government (G2G) and Government to Government Employees (G2E).
  • To provide connectivity to all the e-Governance applications of the State.
  • To provide reliable, cheap & alternate means of communication during normal time and at the time of any kind of disaster.
  • To provide a backbone for video conferencing solutions for interaction of Government with Government functionaries during normal and at the time of any kind of disaster.
In future all GoUK applications hosted in the State Data Centre will be connected through UKSWAN Upgraded Network for faster and quicker access to government offices across the state and would have primarily and a redundant secondary internet link with the existing one from NKN.

Overview UK State Wide Area Network is in operation since 2009. It is serving as state information high way for various departments of Government of Uttarakhand, providing data services. The SWAN provides primary backbone for communication of data throughout the state and is an effective tool for implementation of e-Governance Projects. IT Department GoUK has implemented the UKSWAN project, a Network infrastructure under NeGP scheme of MeitY. The operations of UKSWAN spread over the SHQ at Dehradun, 13 DHQ and 119 Nos THQ/BHQ centers all over Uttarakhand. Each of the above mentioned PoP centers has IT infrastructure consisting of Networking Devices, ISP Provider Lines, Modems, UPS, Air Conditioners & Generators. The network backbone is through BSNL dedicated leased line and connectivity at DHQ through NKN(L2 VPN). Present connectivity is hierarchical i.e. Blocks/Tehsils (BHQs/THQs) are connected to District Headquarters (DHQ) and districts are connected to State headquarters (SHQ). The user departments are connected horizontally to each PoP at respective level (called remote offices).

THE EXISTING UKSWAN NETWORK ARCHITECTURE The existing SWAN is network has been logically divided into two parts namely: 1. Vertical connectivity: SWAN Backbone 2. Horizontal connectivity/ POP LAN Extension : User Departments Connectivity

The Vertical Connectivity of UKSWAN connects the SHQ level to DHQ level & subsequently DHQ level to THQ / BHQ level through lease circuits as appropriate for individual level. The Network has single point Gateway of adequate capacity to connect to Internet. The Horizontal Connectivity: connects all designated government offices to their respective center (SHQ/DHQ/THQ/BHQ). The connectivity to the end user is based on either one or more of standard technologies like leased circuits, Radio frequency circuits, OFC or using Ethernet ports as appropriate for the individual offices. Network Architecture: Leased lines under the current UKSWAN network is managed by ITDA UK. The Network is divided into 3 Tiers i.e. Primary Tier1, Primary Tier2, & Primary Tier3 with each layer representing following segments in case of leased line: Primary Tier1 = Consisting of SHQ that has Core Routers, Switches & other devices Secondary Tier2= Consisting of DHQs having Distribution/Access Routers & other devices at District HQ PoP’s Tertiary Tier3 = Consisting of THQs/BHQs having Access Routers & other devices at SDHQ & Block PoP’s at SDHQs / BHQs Currently State Head Quarter PoP is located at Dehradun, the State Capital. The SHQ Centre comprise of SHQ aggregation point as well as offices within the notified SHQ premises. The SHQ is located at Secretariat building, Dehradun and it also serves as Network Operation Center (NOC) for the current network. The SHQ is the primary component of the UKSWAN thus the availability of SHQ is highly critical. This tier also connects to various offices of GoUK located at Dehradun with UKSWAN and provide data services. All DHQs are connected to SHQ with 10 Mbps and 34/100/1000 Mbps link through NKN with a provision of expansion at all levels. The co-located and remote offices in the districts will be connected to respective DHQ. In

current architecture the traffic from DHQ to SHQ is routed through NKN as primary link (because of higher bandwidth) and BSNL P2P as secondary. THQs/BHQs are responsible for its upward connectivity to DHQ with 10/34/50/100 Mbps, with a provision of expansion.

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Last Update: 18/02/2021