Apologies if this has been posted already - I found this interesting: https://blog.cloudflare.com/analysis-of-todays-centurylink-level-3-outage/ Hagen Miller Senior Systems Engineer Computer Services, Inc. -----Original Message----- From: Outages <outages-bounces@outages.org> On Behalf Of Rodriguez, Alfredo via Outages Sent: Monday, August 31, 2020 12:43 PM To: outages@outages.org Subject: Re: [outages] 3556 problems WARNING: This email is from an external source. Do not click links or attachments unless you recognize the sender and know the content is safe. Randy, I'm almost wondering if the FlowSpec didn't inadvertently target control plane or MP-BGP traffic inadvertently causing the undulating and unrecoverable flapping of their network. Alfredo Rodriguez PS: Good to see a PSC staffer here (from a former CMU student and 'Burgh resident). -----Original Message----- From: Outages <outages-bounces@outages.org> On Behalf Of Randy Bush via Outages Sent: Sunday, August 30, 2020 1:14 PM To: outages@outages.org Subject: Re: [outages] 3556 problems Sabre Email Notification: This email is from an EXTERNAL source. Please use caution when clicking on links or opening attachments from an unknown or suspicious sender.To report a suspected phishing email, browse to: help.sabre.com > Risk & Security > Report a Security Issue ______________________________________________________________________
initial research identified that an offending flowspec announcement prevented Border Gateway Protocol (BGP) from establishing
opsec paranoid here wonders about the content of the flowspec announcement and whence it originated. randy _______________________________________________ Outages mailing list Outages@outages.org https://urldefense.proofpoint.com/v2/url?u=https-3A__puck.nether.net_mailman... _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages ________________________________ This e-mail and any files transmitted with it are the property of Computer Services, Inc. and/or its divisions, are confidential, and are intended solely for the use of the individual or entity to whom this e-mail is addressed. The sender does not accept any responsibility for any loss, disruption or damage to your data or computer systems that may occur from content of any sort contained in, transmitted with, or added to this e-mail. If you are not a named recipient or otherwise have reason to believe that you have received this message in error, please notify the sender and delete this message immediately from your computer. Any other use, retention, dissemination, forwarding, printing, or copying of this e-mail is strictly prohibited.