1. Networks for e-Gov Projects Shatrunjay Rawat IIIT, Hyderabad

2. Design Steps Requirement Analysis Technology Options Available Constraints Making Design Choice

3. Requirement Analysis Purpose of the Network  Data Only  Data and Voice  Data, Voice and Video

4. Requirement Analysis Purpose of the Network  On-line application  Off-line application  Combination of on-line and off-line application Is work scheduling possible?

5. Requirement Analysis Purpose of the Network  Internal Operations  Interface with citizens For disseminating information Two way  Connecting Multiple Departments/ Institutes  Dealer Network

6. Requirement Analysis Network Availability  Fixed Duration Office hours  24 hours

7. Requirement Analysis User Information  Number of Users  Concurrency  Peak load, average Load  User side infrastructure  User skills

8. Requirement Analysis Bandwidth Requirements  Known  Approximately known  Unknown, Open ended  Symmetric OR Asymmetric traffic?

9. Requirement Analysis QoS Requirements  Up-time  Disaster State  Delay, Jitter  Call acceptance/rejection rate Can user wait? How long?

10. Requirement Analysis User Mobility  Fixed  Mobile within a known boundary  Mobile within populated area  Absolute mobility – anywhere on earth  Or beyond earth!!

11. Technologies Available Connectivity - LAN  Ethernet  Frame Relay  ATM  WiFi  L2, L3 Switching

12. Technologies Available Connectivity - WAN  PSTN, ISDN, Wired Broadband  Wireless Broadband - WiMax  2G, GPRS, SMS, MMS  Fixed Leased Lines  MPLS  Satellite Communication VSAT, INMARSAT, Iridium

13. Technologies Available Security  Firewall Packet Filtering, Stateful, Application Proxy Hardware, Software  IDS, IPS  VPN  UTM  Content Screening Gateways Virus, Spyware, User Data

14. Technologies Available Security  Authentication Open LDAP, Active Directory, etc  NAC  VLAN  Cryptography PKI

15. Technologies Available Protocols  IPv4, IPv6  TCP, UDP  Unicast, Multicast  IPSec, SSL

16. Constraints Budget Implementation timelines Organisational capacity Institutional Guidelines  Procurement Manual, etc Legal Requirements  Taxation System, Equal Opportunity, etc International Treaties – WTO, etc

17. Few Example Network APSWAN INFINET Sardar Sarovar Automation Stock Exchange Indian Railways Airport Authority of India Load Dispatch System India Post