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Network Design Proposal Essay

1332 words - 6 pages

UMUC Frederick MD Network Proposal

UMUC Frederick MD Network Proposal

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UMUC Frederick MD Network Proposal

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The network IP addressing scheme for the Frederick MD building should be designed to
ease network management. A well thought out network subnet design enables administrators to
quickly locate computers by IP address by building floor and room, and whether the computer is
a server, a student computer, staff computer or instructor’s computer. A proper subnet design will
also minimize broadcast traffic that decreases network performance, by reducing the total
number of computers allowed in each broadcast domain. A proper subnet design will also
provide for efficient ...view middle of the document...

15.212.1-14/28 (second floor assigned host
addresses 10-15)
Student Computer Lab subnet and range – 10.15.120.1-62/26
Library Student computer subnet and range - 10.15.110.1-14/28
Library Staff computer subnet and range - 10.15.210.1-6/29
Lecture Classroom Instructors subnet and range - 10.15.212.17-32/28
Office Staff computer subnet and range – 10.15.242.1-6/29
Admissions Office Staff computer subnet and range- 10.15.250.1-6/29
Wireless computer subnet and range – 10.15.230.1-14/28 (ACLs applied to the VLAN for
security)

UMUC Frederick MD Network Proposal

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CAT6 UTP will be installed in a star topology because a star topology is less expensive to
manage and is lower cost than a ring (using Token Ring Protocol) and bus (using RG6 and RG58
coax cable). The Admissions Office and Classroom directly above the Admissions office is over
300 feet (the Ethernet limit) from the server room and a diagonal pull through the ceiling (258
feet plus a 30 foot drop best case) could be complicated by power line interference and possible
obstructions), so these two rooms will require fiber optic cabling rather than CAT 6 UTP.
Wireless media access will be protected using WPA2 security with AES 256 encryption
and a pre-shared key to prevent eaves dropping.
The network will use the Hewlett Packard Procurve switches because of their high
performance, low cost relative to other brands (such as Cisco) and their lifetime warranty. The
Hewlett Packard E5406zl switches are can support up to 144 gigabit network connections
(10/100/1000baseT Ethernet) and one will be installed on each floor in their repective Server
Rooms. The switches will be configured with a VLAN (Virtual Local Area Networks) for each
subnet. The network access will be secured using Active Directory single sign-on, and IP
addresses centrally managed using DHCP (with DHCP relay enabled on the switches). An HP
Procurve E3500yl 24 port switch will be installed as the network core to which the HP 5406zl
switches on each floor will be connected. All switches will be configured to use the OSPF (Open
Shortest Path First) protocol to facilitate routing traffic between VLANs, and STP (Spanning
Tree Protocol) will be enabled to prevent network loops, which can cause poor performance
and/or disable the network. The switches will be connected in a partial mesh to minimize single
points of network failure. An HP E-802.11N series wireless access point will connect into the HP
network, providing VLAN support and 104 Mbps network access speed. A Cisco 5505 ASA

UMUC Frederick MD Network Proposal

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firewall security appliance will be installed to protect the private network from the Internet and
provide IPSec VPN connectivity to the main UMUC office.
Dell PowerEdge T310 server hardware with the Windows Server 2008 operating system
will be installed for the Active Directory and Microsoft Exchange servers and as dedicated file
servers for each lab. This hardware includes...

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