Threaded Case Study on RE Miller

ByAidan ColemanPaul Guilfoyle

Presentation Outline

• 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 timesWAN - 2 timesDistrict 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

• 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 forMaster DNS Administrative Database Email /Internet ServerFile/Print Server 

• Workgroup Servers forAdministration ServerLibrary ServerApplication Server’s

R ichard E . M iller

D o ub le P o rt a b le C la ss r o o m

D o ub le P o r ta 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

D o ub le P o rt a b le C las s r o o m

D o ub le P o rt a b le C la ss r o o m

S ing le P or t a b le C la s s r o o mM e d ia C e nt e r

M ul ti- P ur p o s e B uild ing

N o rt h B u ild in g

S o ut h B u ild in g

M D F

ID F

ID F

ID F

S ing le P o rt a b le C la s s ro o m

F ib e r O p tic C a b lin g B e t w e e n M a in B u i ld in g s

C a t 6 C a b l in g T o P o rt a b le C la ss r o o m s

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 Multi-Purpose 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 taskse.g Allow IT team to telnetAccess-list 101 permit telnet10.10.2.0 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 Quantity

Router 1

48 Port Switch 4

24 Port Switch 2

8 Port Hubs 120

Fiber 1,400 ft

CAT5 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/CISCO CaseStudy%5Cciscothreadedcasestudy.ppt

• http://csplinux.saultc.on.ca/~pmoody/CISCO/TCS.html