1. Digital Transmission Lecture o5 Advanced Computer Networks (ACN) 545
Mr. Thilak de Silva.
BSc. Eng., MSc, CEng, FIE(SL), FIET(UK), CITP(UK), MBCS(UK), MIEEE (USA)
M.Sc. in IT - Year 1 Semester II

2. Today's Agenda A brainstorming session Concept Paper
M.Sc. in IT - Year 1 Semester II

3. Session Outcomes
At the end of this session you will understand the requirements of setting up a Network for a new company, budgeting and creation of Concept Paper.
M.Sc. in IT - Year 1 Semester II

4. What to consider when developing a new Network ? - Brainstorming
Analyze the requirements of the company.
Allocated budget.
Geographical locations of the network.
Technical capabilities of the staff of the company.
Number of sub-networks
Security of the Network
M.Sc. in IT - Year 1 Semester II

5. What to consider when developing a new Network ? - Brainstorming
Selection of the venders and service providers.
Type of data/information transported through the network.
Bandwidth Requirements.
Type of organization - academic/commercial
Routing Protocols used.
Company's future plans.
M.Sc. in IT - Year 1 Semester II

6. What to consider when developing a new Network ? - Brainstorming
IPV4 or IPV6
Is VPN required?
Centralized or De-Centralized?
What is the Back-up plan?
Required time line.
M.Sc. in IT - Year 1 Semester II

7. Preparing the concept paper
Step 1 : Identify automation areas.
Web portal ,
Other applications
Billing, Inventory control, HR, Finance, VOIP, vedio conferencing
or ERP
M.Sc. in IT - Year 1 Semester II

8. Preparing the concept paper
Step 2 : Physical locations to be networked
WAN , LAN
For example identify,
Switches for each floor of
the building
Fiber connections
Structured caballing
L3 switches for VLANs
Source :
M.Sc. in IT - Year 1 Semester II

9. Preparing the concept paper
Step 3 : Can connect other existing systems
For example identify,
Number of users per application
Step 4 : Methodology of maintaining the network – Network Management System
M.Sc. in IT - Year 1 Semester II

10. Preparing the concept paper
Step 5 : Draw Network diagram
For Example,
Identify number of buildings and number of floors per each location.
Example :- An organization has,
Headquarters with 4 buildings and 5 floors each
Provincial offices.
Branches
Regional officers
Remote officers
Customer service points.
Different number of buildings and floors
M.Sc. in IT - Year 1 Semester II

11. Preparing the concept paper
Example :- Headquarters has,
For each level get a generic model, because finding buildings, floors and users in every office is time consuming.
Building
Floor
Users 1 20 2 30 ..
M.Sc. in IT - Year 1 Semester II

12. Preparing the concept paper
Step 6 : List the physical devices
For example identify,
24 port L2 switches, L3 switches
Router per center
Firewall
Servers for web portal ,
DNS server, DHCP server
Virus guard server
Network management server
M.Sc. in IT - Year 1 Semester II

13. Preparing the concept paper
Step 6 : List the physical devices
For example identify,
24 port L2 switches, L3 switches
Router per center
Firewall
Servers for web portal ,
DNS server, DHCP server
Virus guard server
Network management server
M.Sc. in IT - Year 1 Semester II

14. Preparing the concept paper
Step 7 : Caballing
Structured caballing per floor
Step 8 : Identify software requirements
Eg:- Software for servers, ITIL software
Step 9 : WAN connectivity
Step 10 : Identify operational cost
Eg :- Software license cost
Maintenance cost
WAN fee
M.Sc. in IT - Year 1 Semester II

15. Preparing the concept paper
By taking these into consideration we prepare the budget.
Using it we prepare the concept paper.
We can present the cost phase wise.
M.Sc. in IT - Year 1 Semester II

16. Thank You…
M.Sc. in IT - Year 1 Semester II