Network Design

Topics: IP address, Dynamic Host Configuration Protocol, Subnetwork Pages: 5 (1434 words) Published: November 2, 2014
UMUC’s new building in Adelphi, MD will have to provide networking connectivity to students, professors, and staff. In order to begin the process of planning the new network, we will begin by planning the network IP addressing scheme. It is very important that the network IP addressing scheme be clearly defined in order for IT administrators to locate computers promptly. Also, in order to make it easier for the administrators, DHCP (Dynamic Host Configuration Protocol) will be used to assign IP addresses. The organization of the subnet layout will assist the IT administrators as well as making effective use of IP addresses.

In order to differentiate between students, staff, and instructors, we will place them on different subnets. Also, the instructors subnet will begin with a “1” in the third octet, the staff subnet will begin with a “3”, and the students subnet will begin with a “4” or “5” in the third octet of the IP addresses. Lastly, the second digit of the third octet will assign the floor for each subnet. An even number in the second digit will mean that the computer or device on the subnet is located on the first floor and an odd number means that it is located on the second floor. Network IP Addresses

First Floor
Subnet mask: 255. 255. 240. 0
Lecture Instructors
Network address: 10. 110. 16. 0
Subnet and range: 10. 110. 16. 2 – 10. 110. 16. 6
Staff (Library)
Network address: 10. 110. 32. 0
Subnet and range: 10. 110. 32. 2 – 10. 110. 32. 6
Admissions Staff
Subnet and range: 10. 110. 34. 2 – 10. 110. 34. 6
Office Staff (3)
Subnet and range: 10. 110. 36. 2 – 10. 110. 36. 4
Students (Library)
Network address: 10. 110. 48. 0
Subnet and range: 10. 110. 48. 2 – 10. 110. 48. 11
Second Floor
Students
Computer Lab #1: 10. 110. 49. 1 – 10. 110. 49. 23
Computer Lab #2: 10. 110. 49. 25 – 10. 110. 49. 47
Computer Lab #3: 10. 110. 49. 50 – 10. 110. 49. 72
Computer Lab #4: 10. 110. 49. 75 – 10. 110. 49. 97
Computer Lab #5: 10. 110. 49. 100 – 10. 110. 49. 122
Computer Lab #6: 10. 110. 49. 125 – 10. 110. 49. 147
Student Computer Lab: 10. 110. 51. 1 – 10. 110. 51. 31
Instructors Computer Labs: 10. 110. 18. 1 – 10. 110. 18. 6 Office Staff (3): 10. 110. 37. 2 – 10. 110. 37. 4

The network topology that will be used in the Adelphi building will be the star topology. The benefit of using the star topology is that even if one node goes down, the rest of the network will continue to be up and running. Also, even though it requires more cabling than other topologies, it’s easier to add or remove computers to the network. In order to connect the computers and network devices to each other, we will be using Cat6 UTP cables. Cat6 cables provide faster speeds than Cat5 or Cat5e cables and support distances up to 100 meters. The only exceptions will be the Admissions office and classroom #6 (above Admissions office), which are right outside the range of Cat6 cable maximum lengths. For the classroom #6 and the admissions office we will use multi-mode fiber optic cables with an SC-type connector that will connect to a StarTech 1000 Mbps Gigabit Multi Mode Fiber Ethernet converter.

The network will include a Cisco Small Business 200 Series Gigabit Switches in each of the instructional computer lab servers (six total). The switch contains 24 ports, 2 uplink ports, and supports speeds of 10/100/1000Mbps. It also provides support for VLAN, which can be used to group instructors and/or staff together. For the student computer lab additional ports are required and therefore we will use a Cisco Catalyst 2960-48TT switch. The switch contains 48 ports and supports the same speeds of the switches that will be installed in the instructional computer lab servers. One of the benefits of the Cisco catalyst is the network security through different methods such as ACLs (access control lists) and admission controls based on users, ports, and MAC addresses. Lastly, the server on the first floor will have a...

References: 1000 Mbps Gigabit Multi Mode Fiber Ethernet Media Converter SC 550m. (n.d.). Retrieved
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Beal, V. (n.d.). Star Network. Retrieved October 3, 2014, from
http://www.webopedia.com/TERM/S/star_network.html
http://netsecurity.about.com/od/quicktip1/qt/qtwifistaticip.htm
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