Question 1

What happens if a standby link triggers a blackhole instead of the active port?

Accepted Answer

Traffic drops globally across all points of view rather than isolating the single congested port. This collapse occurs because receiving more-specific paths forces the network into one viewpoint, affecting sixty-two point five percent of valid traffic.

Question 2

Why is relying on IRR data for blackhole validation considered dangerous in 2026?

Accepted Answer

Legacy IRR relies on arbitrary unsigned data that lacks cryptographic proof of path authority. Operators trusting these unverified entries risk silencing legitimate flows while global traffic routed via valid paths only reached sixty-two point five percent coverage.

Question 3

How does active path verification prevent unintended censorship by middle ASNs?

Accepted Answer

Verification ensures only the customer ASN holding the best path can trigger traffic drops. Without checking the active next hop, middle ASNs might suppress traffic globally, ignoring that valid path coverage sits at just sixty-two point five percent.

Question 4

What specific routing condition causes a network to collapse to a single point of view?

Accepted Answer

Receiving more-specific paths from a standby link often forces the entire network to collapse to one viewpoint. This architectural fragility means blackholing happens everywhere instead of the active port, impacting the sixty-two point five percent of validated traffic.

Question 5

Is RPKI-valid-of-more-specific checking safer than standard community string validation?

Accepted Answer

Yes, checking RPKI validity on more-specifics respects the actual forwarding state and source intent. This method prevents collateral damage better than static filters, especially since global traffic on valid paths is only sixty-two point five percent.

Source on Wirez

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