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https://www.criticalvoid.com/2021/10/04/massive-facebook-outage-caused-by-bgp/
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title
Anomalous BGP announcements and the massive Facebook outage - Critical Void
excerpt
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Earlier today, Facebook experienced a 6 hour long outage that took out several services including Facebook, WhatsApp and Instagram. This is the not the first time that Facebook has had a significant outage, in 2015, Instagram’s TLS certificate expired, a software bug caused an outage in 2016 and in 2019, a server misconfiguration caused a massive outage that was only fully resolved 24 hours later. The internet is a network of networks, which require the use of protocols like Border Gateway Protocol (BGP) so that these networks can tell other networks to how to route traffic to and from them. Providers use BGP to determine which networks their traffic is routed through taking into account cost and speed. The root cause of this outage was a BGP mishap that started at roughly 15:30 UTC when the first set of BGP announcements for various prefixes were made, at 15:39 UTC a series of BGP announcements were observed including various route withdrawal requests and at 15:42, a ...
author
Jared Naude
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1769170209
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