1. WASHINGTON SCHOOL PROJECT WAN DESIGN PROPOSAL This is a sample project completed by previous students. You may look at this, but in NO way copy or use any part in any way. SAMPLE SAMPLE SAMPLE SAMPLE SAMPLE

2. WAN Requirements  Washington School District  Connect all school and administrative offices with the district office  Reliable  Scalable  Optimize bandwidth  Minimize cost

3. TWO – LAYER HIERARCHICAL MODEL  Hierarchical  Method for controlling data traffic patterns  Two – layer design  Three regional hubs  Fast WAN core

4. TWO-LAYER HIERARCHICAL

5. DATA TRAFFIC FLOW  Controlling traffic flow with layer 3  Router path determination  Layer 3 addressing  Flows up hierarchy only as far as it needs  Conserves bandwidth

6. WAN TRAFFIC FLOW

7. WAN CORE  Fast WAN Core  Each Regional hub connected via 4 T1 lines  School locations connected to closest Regional Hub with T1 line  Access to Internet –Thru District Office –Double Firewall –Frame Relay WAN link –No other connections

8. WAN CORE

9. WAN Equipment  Hub routers –Cisco 7576 –Multiprotocol –Router A – slots 0 thru 5 –Router B – slots 8 thru 12 –Dual power possible –Console port –Auxiliary port for DSU/CSU –500,000- to 1,000,000 packets per second

10. Hub Routers – front view

11. Hub Routers – rear view

12. Hub Routers Quantity Part NumberProduct DescriptionPrice Total 3 CISCO7513/4Cisco 7513 13-Slot, Dual Bus, 1RSP4, 1 PS28581 8574300 VIP2 Port and Service Adapters 18 PA-4T+4 Port Serial Port Adapter, Enhanced4781 8605800 Total: 1718010 0

13. School Location Routers  Cisco 2651  37,000 packets per second  Expandable for scalability  Port options –Serial – asynch or synch –ISDN PRI or BRI –T1/E1 connections –ethernet  Multiprotocol  modular

14. School Location Routers Quantity Product DescriptionPrice Total 33 Cisco 2651 Router334500 11038500 Total: 11038500

15. CSU/DSU  Channel Service Unit/Data Service Unit  Like high powered modem  Both ends of T – 1 connection  24 for 4 T-1 lines from each hub router  64 for T-1 lines to each school  1 for Frame relay connection

16. CSU/DSU

17. WAN CORE

18. CSU/DSU COST Quantity Product DescriptionPrice Total 91 Adtran, inc DSU TSP1345 122395 Total: 122395

19. Modems  For dial backup Quantity Product DescriptionPrice Total 36 US ROBOTICS 56K/14.4K V.92 W/RAPIDCOMM FAX/DATA SW 7500270000 Total: 270000

20. Cisco Secure PIX Firewall 525  Tracks source and destination addresses  TCP sequence numbers, port numbers, and additional TCP flags Quantity Product DescriptionPrice Total 1 CISCOADVANTAGE FIREWALL PIX 525 UNRESTRICTED BUNDLEPIX-525-UR-BUN 159571595700

21. Total WAN Equipment Price  $ 302,066.95

22. PPP  WAN data link –layer protocol  Encapsulate datagrams  Link Control Protocol –Establishing, configuring, testing data-link connection  Network Control Protocols –Establishing and configuring network – layer protocols

23. PPP Session Establishment  Link establishment  Link quality determination(optional) –Authentication – CHAP –Repeated after link established  Network – layer protocol configuration negotiation  Link termination

24. Sample CHAP Configuration District_Office> District_Office > enable District_Office# config t District_Office(config)# username Shaw_Butte password “password” District_Office(config)# interface s0/0 District_Office(config-if)# encap PPP District_Office(config-if)# PPP authentication CHAP District_Office(config-if)# exit District_Office(config)# exit District_Office# exit District_Office>

25. PPP

26. IGRP Routing Protocol Distance-Vector Interior Routing Protocol Each router sends all or a portion of its routing table in a routing update message at regular intervals to each of its neighboring routers. IGRP uses a combination Network delay, bandwidth, reliability, and load for its metrics. Allows for various metric settings in networks with widely varying performance characteristics.

27. IGRP Setup As an example: The IGRP Setup for the District office is: District_Office(config)# router igrp 109 District_Office(config-router)# network 10.0.0.0

28. Routing Updates Network Updates will be sent according to the default setting of 90 seconds Will flow from the school sites to the closest regional hub and then flow from the WAN core regional hub to the District Office

29. COMMUNITY ELEMENTARY SCHOOL  Remote location  Infrequent need for connectivity  ISDN BRI connection to WAN core  Usable bandwidth 128 kbps  DDR establishes and releases circuit  Connected via Shaw Butte Hub  Reduced cost

30. COMMUNITY SCHOOL

31. Frame Relay

32.  Internet connection  Virtual circuit over point to point connection  CIR 1.54 mbps  HDLC encapsulation  Cost benefits over T1  Speed - no error checking  DLCI # for virtual circuit from Provider  LMI type for Cisco IOS 11.1 and earlier from Provider

33. IP Addressing - WAN Core IP Address: 10.0.0.0 Subnet Mask: 255.255.255.0 Masked Bits: 24 Host Bits: 8 Number of Subnets: 65536 Hosts per Subnet: 254

34. IP Addressing - LAN IP Address: 172.16.0.0 Subnet Mask: 255.255.254.0 Masked Bits: 23 Host Bits: 9 Number of Subnets: 128 Hosts per Subnet: 510

35. IP Addressing Scheme

36. Private Addressing  Unregistered address ranges  Unusable on public domain  CLASS A: 10.0.0.0 thru 10.255.255.255  CLASS B: 172.16.0.0 thru 172.31.255.255  CLASS C: 192.168.0.0 thru 192.168.255.255

37. NAT  On Firewall NAT enabled and configured one valid registered IP address  Translation Table  Maps addresses to port numbers  PAT - Port Address Translation or overloading  Static versus Dynamic

38. NAT and PAT Source Computer Source IP Address Source Port NAT Router IP Address NAT Router Port Number Lorie172.16.94.82400200.1.1.221 Georgene172.16.94.55502200.1.1.222 Mike172.16.94.54388200.1.1.223 Will172.16.94.48344200.1.1.224

39. NAT

40. NAT and PAT  Benefits –Administration Server Increasing ranges –Security No external initiated traffic Web services No knowledge of Company –Cost Cox

41. NAT

42. Server Placement  DNS hierarchical –Master Server on backbone –Regional hubs –School locations  EMAIL on Master Server and School Locations  WEB Server on backbone

43. Server Placement

44. Connectivity Backup  Out-of Band Network Management  Auxiliary port with attached Modem  Asynchronous dial in  Set aux password –line aux 0 –Password cisco  Modem autohangup

45. Connectivity Backup