https://blog.cloudflare.com/cloudflares-view-of-the-rogers-c...
Not much technical details from the Rogers CEO:
> "We now believe we've narrowed the cause to a network system failure following a maintenance update in our core network, which caused some of our routers to malfunction early Friday morning,"
https://www.cbc.ca/news/business/rogers-outage-interac-debit...
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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.
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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).
That raises other questions about their ability to recover from what isn’t an entirely unique situation (bad routes).
The real issue is, it took Rogers engineers so long to diagnose and address the problem, allowing incorrect route maps to propagate to deep and far corners of the internet.
Anecdotally, a friend in Greece roaming with a Canadian Rogers SIM card was unable to use her phone. Perhaps other Canadian Rogers subscribers, traveling on far continents can confirm?
My guess (pure speculation) is Roger’s TTL values have been dramatically decreased by now, which will increase the bandwidth requirements for network state management. This is also not great news for Rogers customers and peer networks.
I've heard this from several individuals. It makes sense: Rogers, being totally dark, couldn't authenticate any roaming sessions.
I wonder how fast a roaming provider boots you off their network though. Roaming usually tunnels your traffic to your home provider, so I could see data halting immediately. Maybe local calls work for a while.
This effect sunk in when they said they couldn't receive any SMS 2FA. Even people with a local SIM SIM setup (highly recommended!) still need to slide in their home SIM to log into some things.
It was an extended family of 14 people and there are plenty of cell phone towers of various sorts that reach where we were.