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Blackholes are acceptable when it comes to broken attributes. Blackholes spreading is not.
by wbl 1y ago
Blackholes are acceptable when it comes to broken attributes. Blackholes spreading is not.
- ExoticPearTree 1y agoIf you just drop malfromed attributes, there is no blackhole spreading.
- vbernat 1y agoIf the attribute says "encapsulate this", dropping just the attribute will create a blackhole as you will attract traffic that should be encapsulated and packets following this route will be dropped it if not.
- ExoticPearTree 1y agoI guess you're referring to RFC9012. Yes, but then again since you have logs of why it was dropped (like I suggested in my first post, to log everything dropped), you can easily troubleshoot the problem. A much better outcome than flapping a BGP session for no good reason and creating route churn and network instability.
- wbl 1y agoOr just drop the announced route (not the session) with the attribute you can't work with