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300-410 Practice Question: Drag and drop the steps to troubleshoot route…
Drag and drop the steps to troubleshoot route summarization adjacency or connectivity failures into the correct order, from first to last.
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Verify the summarization router has a null0 route
Start by verifying that the summarization router has a route to the null0 interface to prevent loops. Then, confirm that the summary route is being advertised to neighbors using show ip route. Next, check that the neighbor router receives the summary in its routing table. After that, examine the neighbor's routing table for the specific summarized prefix. Finally, test end-to-end connectivity using ping or traceroute to ensure the summary works.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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