CMIT265 Network Design Paper Finished P

Topics: IP address, Subnetwork, Network switch Pages: 14 (2562 words) Published: November 20, 2014


The University has recently leased a building in Adelphi, Maryland to house offices, classrooms, library, and computer labs. The goal of this proposal is to design a network for these facilities. The Student computers are to be on a separate network from the staff computers. The facility will share one Internet connection (T-1 link from Verizon). With a T-1 link the network will be able to function with the speed of 1.544 mbps over 24 channels each running 64 kbps (Labsim). Security is always a big concern and has been taken into consideration. Additional considerations for each floor/classroom/lab/office include printing capabilities and the WiFi (Wireless Access) in the Student Lobby.

The network design plan requested by UMUC for the newly acquired building in Adelphi, Maryland is required to deliver an IP addressing scheme for efficient IT administration and also allow for scalability for future expansion. The use of subnetting or breaking the network down into smaller subnets, will minimize the broadcast traffic that each network node must process and also increase the performance of the network. For the network infrastructure devices including switches, servers, router, and printers, a static IP address should be selected by the network administrator. The subnets that were chosen for the network proposal are broken down into five different subnets. One being used for the six instructional computer labs, one for the student computer lab, one for the six different offices, one for the library, and one for the five lecture class rooms. The network address given by UMUC of 10.11.0.0 is a class A network address that will be used in creating six total subnets for the network. The IP address ranges for the different subnets being used on this network are proposed below. The subnets can be defined by the table below:

Location
Subnet
Subnet Mask
IP Address Range
Devices on Subnet
6 Instructional Computer Labs
10.11.0.0/16
255.255.254.0
10.11.0.1 – 10.11.0.254
120 Student Computers
6 Servers
6 Staff Computers
Student Computer Lab
10.11.1.0/16
255.255.254.0
10.11.1.1 – 10.11.1.254
30 Computers
1 Server
6 Various Offices
10.11.2.0/16
255.255.254.0
10.11.2.1 – 10.11.2.254
10 Computers
Library
10.11.3.0/16
255.255.254.0
10.11.3.1 – 10.11.3.254
10 Student Computers
5 Staff Computers
5 Class Rooms
10.11.4.0/16
255.255.254.0
10.11.4.1 – 10.11.4.254
5 Computers

After reviewing the Universities requirements it is apparent that the Staff and Student networks require separation and for this the use of VLANs or virtual local area networks will provide a way of structuring growth logically and also for the security between the students and staff. Even though the staff and students computers will be wired to the same switch the use of the separate VLANs will allow the student and staff to be logically separated from each other. Since security is a big concern of the University, separating systems that have sensitive data such as the staff, from the rest of the network decreases the chances that the students will gain access to unauthorized data. With the University also using different departments such as the lecture rooms, offices, library, and computer labs the use of VLANs to separate these different departments is also suggested. In order to “create a VLAN using most switches simply by logging into the switch via Telnet and entering the parameters for the VLAN (name, domain and port assignments). After you have created the VLAN, any network segments connected to the assigned ports will become part of that VLAN. While you can have more than one VLAN on a switch, they cannot communicate directly with one another on that switch. If they could, it would defeat the purpose of having a VLAN, which is to isolate a part of the network (Tyson 1).” Different VLANs will be implemented to separate each subnet and to separate broadcast...

References: Cisco. (2014, September). Cisco AnyConnect Secure Mobility Solution – Cisco AnyConnect Secure Mobility Client and Cisco ASA 5500 Series (SSL-IPsec VPN Edition) Datasheet. Retrieved September 28, 2014, http://www.cisco.com/c/en/us/products/collateral/security/asa-5500-series-next-generation-firewalls/product_data_sheet0900aecd80402e3f.html
Cisco. (2014, September). Cisco SLM2048 48-Port Gigabit Smart Switch. Retrieved September 28, 2014, from Cisco.com: http://www.cisco.com/c/en/us/products/collateral/switches/slm2048-48-port-gigabit-smart-switch-sfps/data_sheet_c78-500603.html
Tyson, J. (2001, January 24). HowStuffWorks.com. Retrieved September 29, 2014, from How LAN Switches work: http://computer.howstuffworks.com/lan-switch16.htm
Wikipedia. (2014, Sept 29). Retrieved Sept 29, 2014, from Wikipedia.com: http://en.wikipedia.org/wiki/Category_6_cable
XMultiple. (n.d.). Retrieved Sept 29, 2014, from Xmultiple Technologies Inc: http://www.xmultiple.com/xwebsite-forum24.htm
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