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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. To reduce routing loops and counting to infinity, RIP uses the following: Defininginfinity Split horizon Route poisoning & poison reverse Triggered updates Holddown timers RIP Configuration Issues

  18. The show ip protocols Command

  19. The show ip route Command

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

  21. Preventing Routing Updates through an Interface

  22. Load Balancing with RIP

  23. Administrative Distance

  24. 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.

  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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