Transcript Document 7624592

Threaded Case Study - Acacia
(Nick Effler, Brian Ford, Cindy Coultas & Teresa Duchardt)
April-May, 2000
 Project Goals
• Implement WAN Access to connect all the
schools within the district
• Internet Access to all users
• Two LANs (Administration and Curriculum)
• Allow for growth rate of 1000% in the LAN and
100% in the WAN over a 7-10 year life
Technical Specifications
 Routers at each school to filter traffic
 TCP/IP and Novell IPX Protocols
 10 mbps access to all users
 Fast Ethernet (Cat5)
 Extended Star topology
 Desktops will have a 10/100 NIC Card
Technical Specifications (cont)
 Fiber Optic Backbone
 4 UTP runs of Cat 5 to each classroom
 1 Cisco 2924 24-port switch located in each
classroom.
 1 Cisco 2924 24-port switch located in IDF
room
 1 Dedicated Line from the switch for LAN
Access for Administration
Equipment Needs
 44 Cisco 2924 switches (1 in each
classroom and located in the IDF)
 2924 switch in IDF needs fiber module
 Cisco Catalyst 6509 Switch located in MDF.
Has a supervisor and RSM (routing)
modules. 48 port blades. Starting out we
will utilize 3 10/100 48 port blades.
Additional 48 port blades can be added to
accommodate growth rate.
Equipment Needs (Cont.)
 Routing is done through the RSM module of
the Cisco 6509 switch. Purchase the fiber
ports module. An additional 1601 Cisco
router will be needed for Frame Relay
 Access lists will be used for permitting and
denying access
 RSM module - each interface has its own IP
address. Each interface assigned
necessary access lists
Addressing Scheme
 Class A address to be obtained from ISP for
the WAN 30.40.32.0
 Multiple subnets such as:
•
•
•
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subnet for the cisco switches
subnet for administrators
subnet for each classroom
Additional subnets to be added as needed for
growth
Servers
 DNS
 Email
 Admin
 Application
 Library
 Webserver
 DHCP
Servers (Cont)
 Administration Workgroup
 Student Workgroup
 All Servers will be located in the MDF Room
 Additional Workgroup Servers can be
added as growth rate requires.
Security
 All users will have a network logon ID and
Password.
 All users will be forced to change their
password every 30 days
 Access Lists will be set up on the routers to
permit/deny appropriately
Router Configuration
 Design layout
Administration
Students
Server
Closet
Switch
Switch
District Office
MDF
IDF
Switch
Students
Administrative
Justifications
 Cisco 2924 24-port switch located in each
room. Each port has its on bandwidth and is
its own collision domain.
 Cisco 2924 24-port switch located in the IDF
room with a purchased fiber module to run
between IDF and MDF.
 A Cisco 6509 switch located in the MDF.
Accommodates a lot of room for growth.
Justifications (cont.)
 Switching will be used to provide
segmentation
 Fragment Free switching selected to
reduce latency
 VLANs used to provide a cost-effective and
ease of administration solution.
Truncating VLANs keeps management down
by setting them up on the 6509 switch only
Justifications (Cont.)
 Access Lists are used to control the traffic
as necessary between the LAN segments
 Fiber used between MDF and IDF to provide
secure 100 mbps for the backbone
Justification (cont.)
 Cat 5 UTP to servers between Full duplex
100 mbps devices for high-speed dedicated
bandwidth
 Asymmetrical switching to meet the 10
mbps user access
 Extended Star Topology provides ease of
maintenance as the growth rate occurs
Analysis
 Strengths
• Simple topology with ease in maintenance
• Ease in administration
• Broadcast Domains are nicely sized (Vlans)
 Weaknesses
• Cabling set at Cat5 limits our bandwidth
• Length of cable runs can be a weakness to
accommodate growth rates