Designing a Reliable and Expandable Network Infrastructure, Schemes and Mind Maps of Network Programming

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Table of Contents

conceptual design in a network and assigns it a logical role in a within that framework. Its components consist of IP structures of the network (Craft, 2006). 2.2. User requirements for general network design

User requirements is that the set of requirements gathered or derived from user input and is what's needed by users to user the good network design (McCabe, 2003). Typically, when gathering requirements, everyone attached that network design is taken into account a potential user. Some of user requirements for general network design can be told as Interactivity, presentation quality, functionality, supportability and future growth. Thus, designing a network can be a challenging task. To design reliable, expendable internetworks, network designers must realize that components of an internetwork have distinct design to meet user requirements. From there, there are design and implement the networking project based on the specific user requirements below: Objects:  200 students  15 teachers  12 marketing and administration staff  5 higher managers including the head of academics and the programmer manager  3 computer network administrators Actual Resources: 50 student lab computers, 35 staff computers, and 3 printers. System structure: 3 floors, all system computers and printers are on the ground floor apart from the IT labs – one lab located on the first floor with 25 lab computers and another located on the second floor with 25 left computers. Prepare for design:  12 PCs  3 Printer  2 Router (1941)  3 Switch (2960)

computers on first and second floor, the others are set for different functions room in ground floor. And each switch is set for each floor. Particularly, there is setting network:  On first floor, Student Lab 1 has 2 computers, 1 switch. The reason why student Lab 1 has 1 switch is because one switch contains 24 port so that this can connect more computer to representing for 25 lab computers only with 2 lab computers.  On Second floor, Student Lab 2 has 2 computer, 1 switch. Switch connected 2 computer is enough for representing left 25 computer.  Staff room has 8 computers include: 2 for teacher room(representing for 15 teacher computers); 2 for Admin and marketing room(representing for 12 AD & MAR computers); 2 for Manager room(representing for 5 computers); 2 for Network admin room(representing for 3 computers) and 1 router, 1 switch , 3 printers.  Configure IP Address: In my logical network design I do not provide ip address for each computer as usual, but I give the address through DHCP server. Specifically, i configure one router(1941) with host name "R- Center". With the a router(R-center) configuration, it sets the full DHCP server implementation that assigns and manages IP

Figure 3: Configure Excuded addresses Figure 4:Configure IP helper addresses from specified address 3 pools within the router(R- Center) through GigabitEthernet ports to computers in 3 floors which use ip address supplied DHCP server. o Simultaneously, i also configured to allocate additional parameters such as the IP address of (DNS) server(which is set 192.168.11.5) and the default router is set to GigabitEthernet of each switch in 3 floors which support to provide ip addresses through DHCP. o I also performed the other task to define IP excluded addresses that the DHCP server ought to not assign to computers in 3 floors in my network design. The IP address configured on the router(R-center) be automatically excluded from the DHCP address pools. I do this task to exclude addresses from the pool if the DHCP server ought to not assign these IP addresses. o When I done configure and set up the router R-Center, most computers also still ignored the IP addresses from DHCP server. Therefore, I configured IP helper-address as a "middle man" in interface configuration mode on the router (R-Floor) that is connected to the 2 labs on 2 floor through 2 GigabitEthernet0/0 and 0/1 in which provide DHCP IP addresses. Configure an IP Helper address which pass through the serial 0/1/0 of R-center connecting to R-Floor to ensure that devices on that GigabitEthernet0/0 and GigabitEthernet 0/1 parts can receive DHCP IP address from the DHCP Server (R-Center).

o Doing separate the devices in in conformity with each floor according to requirements (first floor, second floor for lab students, ground floor for Teachers, Staffs, Managers-Marketing and Network Administrators). o On ground floor we have 8 PCs, 1 switch and 3 Printer. o On first Floor this network design has 2 PCs, 1 switch. o On second Floor this network design has 2 PCs, 1 switch and both first and second floor use together 1 router. Address Table There is the addressing table of the given diagrams above: Device Interface IP Address Subnet Mask R-CENTER Gigabit0/0 192.168.1.1 255.255.255. Se0/1/0 10.1.1.1 255.255.255. R-FLOOR Gigabit0/0 192.168.2.1 255.255.255. Se0/1/0 10.1.1.2 255.255.255. Because all computer in this network also get configure of receiving IP Address from DHCP server R- Center(in logical design). Thus, all IP address of each computer also automatically set by routing range. Althout the providing the address table is not too necessary, there are the table address above: Device IP Address Subnet Mask Default Gateway AD-MAR PC 1 192.168.1.7 255.255. .

AD-MAR PC 12 192.168.1.2 255.255.

TEACHER PC 1 192.168.1.5 255.255.

6. (^) Capable of pinging from LAB-PC50 to every devices of the devices connected to the switch Allowable

7. Capable of pinging all devices in ground floor Allowable 8. Capable of pinging from LAB pc 25 to R-Center Allowable Evaluatation of the network design: For my design of network can meet the user requirements, I designed and set it in the simple structure which is quite similar to Star topology structure. Designing it like that since this structure is not too complicated for me as far as ensuring the stability of connection between devices, adjusting when edit the network become convenient, the network can be adjusted to be expandable or narrowable in the scope of user computers. In addition, when I set up to this design of network, i realized that the system of network operates depend on the original fixed connection. The operating of network only need to the router R-center or R-floor and 3 switches which support supply IP have no problems and operate properly. So, even if in case these are networking computer devices around have an information node gets error, the network still operate as usual. Here are some Pros and Cons of of my network design based on user requirements:  Benefits: o The two main routers have high security. o Don't need to spend time to enter the IP address for each computer and network device because of having the function of provide IP address through DHCP. o Ping through each other fast and smoothly networks. Almost no request time out. o Expendable and narrowable.  Drawbacks: o The Internet connecting speed, network transfer nodes and IP address provider depend almost on the routing provider, there is no backup solution in case routing provider get some problems or trouble. o Having quite much cables used in network lead to the cost for equipment will rise

o Except 2 main router, network computers and others network devices still have weak security.  Some soltutions for enhance my network design: o Using wireless or other cheaper connection methods to decrease the cost of setting up network. o Configure the retriction of access rights for particular network devices. o Set up more backup service provider for averting case the main routing provider gets fails. o Usually examine and upgrade software and firmware of switch, router and any network devices. Test Plan: Test No. Test plan Description 1 Ping from Network Administrator pc to Teacher pc Open Network Administrator PC, click desktop then command prompt Use command “ping 192.168.1.5”(Teacher-pc’s IP) 2 Ping from Network Administrator to AD- MAR pc Open Network Administrator PC, click desktop then command prompt Use command “ping 192.168.1.7”(AD-MAR-pc’s IP) 3 Ping from Network Administrator to Manage pc Open Network Administrator PC, click desktop then command prompt Use command “ping 192.168.1.4”(MAN-pc’s IP) 4 Ping from Network Administrator to LAB pc 1 Open Network Administrator PC, click desktop then command prompt Use command “ping 192.168.2.2”(LAB-pc1’s IP) 5 Ping^ from^ LAB^ pc^ 1 to^ LAB^ pc^50 Open LAB pc 1, click desktop then command prompt Use command “ping 192.168.3.3”(LAB- pc50’s IP) 6 Ping^ from^ Teacher^ pc^ to^ MAN printer Open Teacher pc 1, click desktop then command prompt Use command “ping 192.168.1.13”(LAB-pc50’s IP)

7 Ping^ from^ LAB pc^25 to^ R- Center Open LAB pc 25, click desktop then command prompt Use command “ping 10.1.1.1”(R-center IP)

4. Implement a networked system

• Table of Contents............................................................................................................................................................................................
• 1. INTRODUCTION.................................................................................................................................................................................
• 2. LOGICAL/PHYSICAL DESIGN OF NETWORK SYSTEM.............................................................................................................
  • 2.1. The difference between Logical and Physical design..................................................................................................
  • 2.2. User requirements for general network design.............................................................................................................
    • Logical design based on user requirements...........................................................................................................................
    • Physical design based on user requirements.........................................................................................................................
    • Address Table....................................................................................................................................................................................
• 3. Evaluate the design......................................................................................................................................................................
  • TEST SCHEME for a general network..........................................................................................................................................
  • Evaluatation of the network design............................................................................................................................................
  • Test Plan...............................................................................................................................................................................................
• 4. Implement a networked system...............................................................................................................................................
     • Step-by-step how to configure networking devices and computers in the network.............................................
• 5. Document and analyse test results........................................................................................................................................
  • Implementation Process Document............................................................................................................................................
  • Test Results.........................................................................................................................................................................................
• 6. CONCLUSION...................................................................................................................................................................................
• References...............................................................................................................................................................................................
• TEACHER PC 15 192.168.1.3 255.255. -. - 192.168.1.
  • MANAGER PC 1 192.168.1.4 255.255. -. - 192.168.1.
• Figure 8: Perform test 2 Figure 7: Perform test