Threaded Case Study
on RE Miller
By
Aidan Coleman
Paul Guilfoyle
Presentation Outline
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Objective
User Requirements
LAN/WAN Design Considerations
Servers/Internet Access
ACL’s
Equipment List
Advantages / Disadvantages
Objective
• The Washington School District is designing a
district wide computer network for the
purpose of providing online automation of
administrative and curricular functions
between all of the schools and administrative
offices in the network.
• The LAN/WAN design will need to meet the
requirements of growth, functionality, security
and cost.
User Requirements
• Network Functional Life: 7-10 years
• Anticipated Growth:
LAN - 100 times
WAN - 2 times
District Internet Connectivity – 10 times
• Speed: To workstations - 1 Mbps
To Servers- 100 Mbps
• Protocols: TCP/IP
• Internet Access: Frame Relay
LAN Requirements
• LAN Infrastructure – Two LAN’s
• LAN infrastructure based on Ethernet LAN
switching.
• 1.0 Mbs will be provided to any host and
100 Mbs to any server host
• Will use Extended Star Topology
Classroom Requirements
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24 Student workstations
1 Teacher’s workstation
Lockable Closet for patch panel and hubs
4 Cat 5 UTP drops to each classroom from
MDF/IDF
Servers
• Enterprise Servers for
Master DNS
Administrative Database
Email /Internet Server
File/Print Server
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Workgroup Servers for
Administration Server
Library Server
Application Server’s
Richard E. Miller
S ing le P o rt a b le C la s s ro o m
S ing le P o rt a b le C la s s ro o m
Cat 6 Cablin g To Po rtable C lassroom s
IDF
D o ub le P o rt a b le C l as s r o o m
D o ub l e P o r ta b le C la s s ro o m
D o ub le P o rt a b le C l a ss r o o m
D o ub le P o rt a b le C l a ss r o o m
S i ng le P or t a b le C la s s r o o m
M e d ia C e nt e r
S o ut h B u ild in g
N o rt h B u ild in g
IDF
IDF
M ul ti- P ur p o s e B uild i ng
Fiber O ptic C abling Betw een M ain Build in gs
M DF
Wiring Scheme
• The Richard E. Miller campus consists of four
permanent buildings and seven portable
classroom buildings.We will have one MDF
and three IDF’s.
• The MDF and POP are located in the MultiPurpose Building
• Fiber optic cable will connect each IDF to the
MDF.
• Four Cat5 UTP cable runs to each room to
support 24 student computers and 1 teacher
computer.
Addressing
• Class C Address in District Office
• Require 250 Addresses for Students and 75
for teachers/administration
• Static Addressing for Teachers/Admin
• Dynamic for Students (using DHCP)
• Use NAT for internal addressing
Addressing cont’d
• Assume RE Millers is 200.200.1.10
• We use Network Address Translation to
convert for the internal addresses
• Use Class A Addresses Internally
10.10.1.0
Teachers
10.10.2.0
Admin
10.10.3.0
Students
Security
• Access from Internet is denied, using
access lists
• Unauthorised addresses will be
prohibited
• Separate VLAN’s for students,teachers
and administration
Security cont’d
• Will use Access Control Lists to secure site from
external access – Apply to Router Interface
connecting to WAN
• ACL’s to allow staff perform certain tasks
e.g Allow IT team to telnet
Access-list 101 permit telnet
10.10.2.0 0.0.0.255 10.10.2.0 0.0.0.255 eq 23
• Also use ACL’s to deny students access to
unauthorised websites – Apply to Router
Interfaces connecting to LAN
Equipment Required
Details
Router
48 Port Switch
24 Port Switch
8 Port Hubs
Fiber
CAT5
Quantity
1
4
2
120
1,400 ft
20,000 ft
Advantages
• Room for future growth in LAN and WAN
• Hubs can be replaced by switches to
increase bandwidth
• Enhanced seurity through use of both
VLANs and ACL’s
Disadvantages
• No redundancy in cable layout
• Possible areas for traffic congestion
• DIFFICULT ASSIGNMENT
References
• http://home2.swipnet.se/~w-23545/cisco/
• http://www.cisco.michaelbarrett.org/
• http://stumedia.csi.edu/students/gpb5765/CI
SCO
CaseStudy%5Cciscothreadedcasestudy.ppt
• http://csplinux.saultc.on.ca/~pmoody/CISC
O/TCS.html