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CCNA 2 v3.1 Module 7 Distance Vector Routing Protocols

CCNA 2 v3.1 Module 7 Distance Vector Routing Protocols. Purpose of This PowerPoint. This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.1. It was created to give instructors a PowerPoint to take and modify as their own. This PowerPoint is:

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CCNA 2 v3.1 Module 7 Distance Vector Routing Protocols

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  1. CCNA 2 v3.1 Module 7 Distance Vector Routing Protocols

  2. Purpose of This PowerPoint • This PowerPoint primarily consists of the Target Indicators (TIs) of this module in CCNA version 3.1. • It was created to give instructors a PowerPoint to take and modify as their own. • This PowerPoint is: • NOT a study guide for the module final assessment. • NOT a study guide for the CCNA certification exam. • Please report any mistakes you find in this PowerPoint by using the Academy Connection Help link.

  3. To Locate Instructional Resource Materials on Academy Connection: • Go to the Community FTP Center to locate materials created by the instructor community • Go to the Tools section • Go to the Alpha Preview section • Go to the Community link under Resources • See the resources available on the Class home page for classes you are offering • Search http://www.cisco.com • Contact your parent academy!

  4. Objectives

  5. Distance Vector Updates

  6. Problem: Routing Loops • Routing loops can occur when inconsistent routing tables are not updated due to slow convergence in a changing network.

  7. Problem: Counting to Infinity

  8. Solution: Defining a Maximum for Infinity

  9. Solution: Split Horizon

  10. Solution: Route Poisoning

  11. Solution: Triggered Updates

  12. Solution: Holddown Timers

  13. Key Characteristics of RIP

  14. RIP Commands • Using router rip and network commands to Enable RIP • Enabling RIP on an IP-addressed network • Monitoring IP packet flow using the show ip protocolcommand • The show ip routecommand

  15. Configuring RIP

  16. Using the ip classless Command

  17. The show ip protocols Command

  18. The show ip route Command

  19. Troubleshooting RIP Update Issues • debug ip rip • show ip protocols {summary} • show ip route • debug ip rip {events} • show ip interface brief

  20. Preventing Routing Updates through an Interface

  21. Load Balancing with RIP

  22. Administrative Distance

  23. Integrating Static Route with RIP • A router running RIP can receive a default route via an update from another router running RIP. • Another option is for the router to generate the default route itself. • The administrator can override a static route with dynamic routing information by adjusting the administrative distance values.

  24. Integrating Static Route with RIP • Static routes that point out an interface will be advertised by the RIP router that owns the static route and propagated throughout the internetwork. This is because static routes that point to an interface are considered in the routing table to be connected and thus lose their static nature in the update. If a static route is assigned to an interface that is not defined in a network command, a redistribute static command must be specified in the RIP process before RIP will advertise the route.

  25. IGRP Features

  26. IGRP Commands • Using router igrp and network commands to enable IGRP • Enabling IGRP on an IP-addressed network • Monitoring IP packet flow using the show ip protocol command • The show ip interfaces command • The show ip route command • The debug ip rip command

  27. IGRP Metrics • Bandwidth – The lowest bandwidth value in the path • Delay – The cumulative interface delay along the path • Reliability – The reliability on the link towards the destination as determined by the exchange of keepalives • Load – The load on a link towards the destination based on bits per second

  28. IGRP Routes: Interior, System, & Exterior

  29. Holddowns, Split horizons, & Poison-reverse updates IGRP Stability Features

  30. Configuring IGRP

  31. Migrating RIP to IGRP • Verify existing routing protocol (RIP) on the routers to be converted. • Configure IGRP on RouterA and RouterB • Enter show ip protocols on RouterA and RouterB • Enter show ip route on RouterA and RouterB

  32. Migrating RIP to IGRP

  33. Verifying IGRP Configuration • Some commands for checking IGRP configuration are as follows: • show interface interface • show running-config • show running-config interface interface • show running-config | begin interface interface • show running-config | begin igrp • show ip protocols

  34. Troubleshooting IGRP • The following commands are useful when troubleshooting IGRP: • show ip protocols {summary} • show ip route • debug ip igrp events IGRP protocol events • debug ip igrp transactions IGRP protocol transactions • ping • traceroute

  35. Summary

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