XUMUC is a large online university in the Eastern United States. The university has an enrollment of 90,000 students, mostly online. The students do not live on campus and are scattered around the...

Background Information for the Campus Network Design Project
XUMUC is a large online university in the Eastern United States. The university has an enrollment of 90,000 students, mostly online. The students do not live on campus and are scattered around the globe. XUMUC offers courses in the fields of arts and humanities, business, social sciences, mathematics, computer science, the physical sciences, and health sciences. Many of the professors are working professionals with jobs in the business community, and only 5% of the 3,000 faculty have offices on the main campus. Due to the opening of new online universities in the DC metropolitan area, the university has had a difficult time attracting new students. The college wishes to attract and retain more students, many of whom leave the state to attend more prestigious colleges. Because of these reasons and others, the State advisory board expanded the Shady Grove campus of XUMUC. Nine states colleges open their
anches at Shady Grove location. XUMUC’s management board now wishes to consolidate management functions at its Shady Grove location.
The president of XUMUC formed an Advisory Group whose mission was to consolidate IT functions and implement a state of the art network to attract prospective students. The
Advisory Group was also to determine why prospective students do not select XUMUC. The group determined that many prospective students do not select XUMUC because they perceive the computer facilities at XUMUC to be inadequate. In addition to the computer applications used by the students and professors, the college administrative personnel use the College Management System, which is a Novell NetWare client/server application that keeps track of class registrations and student records.
The Cu
ent Network at Shady Grove Campus:
The Shady Grove campus hosts 9 independent universities, working independently. The campus has three main buildings and fiber optic cable is used for backbone connections. The campus diagram is shown below.
U N I V E R S I T Y
Building-2Building-1Building-3
XUMUC Shady Grove Campus
Towson
UB
Bowe
UMCP
Class Rooms
Labs
SE
UMES
UMBC
Class Rooms
UMUC
Li
ary
Class Rooms
UMB
Labs

Each building is connected by fiber optic cable. Because most of the students that attend XUMUC do so on a part-time basis, and because many of the faculty members have other jobs, the assumption in the past has been that many of the students and professors use computing resources at home or at work and do not depend on the XUMUC network. The cu
ent network is shown in Figure -1.
Fig:-1
Internet
Internet
Internet
Internet
Towson 4WS
UB 5WS
Bowe 5WS
UMCP 8WS
Class Rooms
and Labs
ES 4WS
UMES 8WS
UMBC 12WS
UMUC20WS
Li
ary 25 WS
Class Rooms
UMB 15WS
Cu
ent Network Topology ShadyGrove
All the LANs at this site use 10-Mbps Ethernet although they can be upgraded to 100 Mbps. Every building is equipped with Category-5 cabling and wall plates in the various offices, classrooms, and labs, though the cabling and wall-plates are not used in some of the buildings. To support users in Building-3, multi-mode fiber-optic cabling was pulled through cabling conduits to Building-1 and Building-2. At the Shady Grove campus, XMUC uses the services of 4 ISPs for internet connections.
The college provides 10 Macintoshes and 25 PCs in the Computing Center (in Building-1) for student use. A LAN switch in the Computing Center connects hubs, servers, printers, and the router that connects to the Internet. Shady Grove campus does not have its own web server. For security, packet filtering firewall is used on some routers. The routers have default routes to the Internet and do not run routing protocols. Based on the advice of the Community Advisory Group, the president started the “Upgrade XUMUC Project” with the goal of upgrading the computer and networking facilities. The three network administrators and the Director of Operations for XUMUC formed the Project Task Force.
Table:-1 Shady Grove Inventories
    Subnets
    Devices
    Comment
    UMUC
    20
    Work Stations
    UMES
    8
    Work Stations
    UMCPTowson
    8
    Work Stations
    Towson
    4
    Work Stations
    UB
    5
    Work Stations
    UMB
    15
    Work Stations
    Eastern Shore
    4
    Work Stations
    UMBC
    12
    Work Stations
    Bowe
    5
    Work Stations
    Class Rooms
    150
    Work Stations
    Shady Grove Administrations
    50
    Application server, Data server, and SAN
    Route
    4
    2600 series, Slow processing powe
    Switches
    10 switches
    All switches are without port security. No technology to reduce convergence time.
    Patch Panel
    4
    
    Hubs
    5
    
    Printers
    5
    Commercial Type in Copy Centre
    Network Printers and departments Printers
    25
    
Voice Network:
Shady Grove campus has 200 telephones on a separate voice network. IP telephony is used for internal purposes. PSTN (the Phone Company) is used to dial out. The logical diagram is shown below.
PBX Switch
200 Capaity
Call ManagerPSTN NetworkInternetIP Data NetworkIP Voice Network
Shady Grove Voice Network
Security:
The site recently experienced an increase in network attacks (DoS). The network was recently unavailable for a considerable time because of an attack. IT staff suspect that these attacks are coming from a
oad range of spoofed IP addresses, but are unable to prevent these attacks. They have suggested installing a NID so that they can monitor the network more closely and stop an attack while it is happening. Network availability is crucial for the university because their revenue depends on availability of network.
Web server:
The director of the site wants to host a web site to increase revenue and share resources among all the universities located at this location. His main concern is that a hacker can access the internal network through a compromised web server.
RFP
The state government has funded this project on actual cost basis to upgrade XUMUC’s computer labs and campus network. Even though the project is funded on actual cost basis, the challenge with the network design is that the school’s budget does not call for more money to be spent on network administration as needed, so the new design has to be manageable and simple. The project task force issued the following RFP to upgrade the network.
Business and Technical Goals
The University Advisory Group identified the following business goals for the Project:
· Increase the enrollment from to 400 to 500 students by the year 2011
· Reduce the attrition rate from 30 to 15 percent by the year 2011
· Attract students who leave the state to attend colleges with more technological advantages
· Provide more and bigger computer labs on campus
· Allow students to attach their notebook computers to the campus network to reach campus and Internet services
· Reduce telephone costs
· Provide faster services
· Maintain (or reduce, if...