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Showing posts with label Day 17. Show all posts

Day 17 — BGP ORIGIN: IGP, EGP and Incomplete Without the Common Misconceptions

Day 17 — BGP ORIGIN: IGP, EGP and Incomplete Without the Common Misconceptions

September 13, 2026

Learning objective Interpret the ORIGIN attribute correctly, explain the preference order IGP < EGP < incomplete in Cisco best-path s...

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Day 59 — RPKI Route Origin Validation: ROAs, Valid, Invalid and NotFound

1. Opening RPKI Route Origin Validation answers a narrow but powerful question: is the origin AS in this BGP route authorized by the addres...

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