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Read the Cloudflare post: ======= Cloudflare Radar shows a near complete loss of traffic from Rogers ASN, AS812, that started around 08:45 UTC (all times in t

by chx 4y ago

Read the Cloudflare post: ======= Cloudflare Radar shows a near complete loss of traffic from Rogers ASN, AS812, that started around 08:45 UTC (all times in this blog are UTC). What happened? Cloudflare data shows that there was a clear spike in BGP (Border Gateway Protocol) updates after 08:15, reaching its peak at 08:45. ======= BGP storm first, outage second.

maltalex 4y ago
If an internal route goes down, the information is propagated to adjacent networks via BGP. So the BGP storm could have been caused by routes becoming unreachable (possibly intermittently).
gruez 4y ago
>BGP storm first, outage second. Not really. If you overlay the two graphs you see that the outage happened almost in lockstep with the outage. While the two events are correlated, that doesn't imply causation. There could be a common cause factor that was behind both of them, for instance (which is what the parent poster was saying). https://i.imgur.com/OnP4Kcz.png https://i.imgur.com/OnP4Kcz.png