Threaded Case Study - RE Miller (Nick Effler, Brian Ford, Cindy Coultas & Teresa Duchardt) April-May, 2000

1. Threaded Case Study - RE Miller(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

2. 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

3. 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 each IDF room • 1 Dedicated Line from the switch for LAN Access for Administration

4. Equipment Needs • 43 Cisco 2924 switches (1 in each classroom and located in each of the IDF) • 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.

5. 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

6. Addressing Scheme • Class A address to be obtained from ISP for the WAN 30.30.32.0 • Multiple subnets (including the following): • subnet for the cisco switches • subnet for administrators • subnet for each classroom • Additional subnets to be added as needed for growth

7. Servers • DNS • Email • Admin • Application • Library • Webserver • DHCP

8. 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.

9. 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

10. Router Configuration • Design layout

11. Justifications • A Cisco 2924 24-port switch located in each room. Each port has its on bandwidth and is its own collision domain. • A cisco 2924 24-port switch located in each of the IDF rooms 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.

12. 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

13. 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

14. Justification (cont.) • Cat 5 UTP Full duplex 100 mbps to servers between 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

15. 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