Bogon
Day 63 — Bogon, Special-Purpose and Source-Address Filtering at the Internet Edge
1. Opening 'Bogon filtering' is often taught as a static list of prefixes that should never appear. That model ages badly. IPv4 all...
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Prefix Ownership Reconciliation: IRR
Day 62 — Prefix Ownership Reconciliation: IRR, RPKI and Customer Authorization
1. Opening Customer onboarding often produces three different prefix lists: what the customer says it owns, what an IRR says it will announ...
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IRR
Day 61 — IRR, RPSL, Route Objects and AS-SET Based Filtering
1. Opening Internet Routing Registries exist so operators can publish routing-policy information in a structured form. That information can...
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BGP
Day 60 — RPKI-to-Router (RTR) Deployment and Cisco Origin-AS Validation
1. Opening Routers do not normally crawl the global RPKI repositories themselves. A relying-party validator validates signed objects and ex...
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Invalid and NotFound
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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