[outages] 3556 problems

Jörg Kost jk at ip-clear.de
Sun Aug 30 12:58:17 EDT 2020


Stable,

latest statement (Flowspec):

Summary: On August 30, 2020 10:04 GMT, CenturyLink identified an issue 
to be affecting users across multiple markets. The IP Network Operations 
Center (NOC) was engaged, and initial research identified that an 
offending flowspec announcement prevented Border Gateway Protocol (BGP) 
from establishing across multiple elements throughout the CenturyLink 
Network. The IP NOC deployed a global configuration change to block the 
offending flowspec announcement, which allowed BGP to begin to correctly 
establish. As the change propagated through the network, the IP NOC 
observed all associated service affecting alarms clearing and services 
returning to a stable state.

On 30 Aug 2020, at 18:33, Tim Choe via Outages wrote:

> According to Centurylink tweet, their service has been restored.  Can 
> someone help me confirm that this is true before I start shifting the 
> traffic back?
>
>
>
> From: Outages [mailto:outages-bounces at outages.org] On Behalf Of 
> Stephen Flynn via Outages
> Sent: Sunday, August 30, 2020 8:41 AM
> To: outages at outages.org
> Subject: Re: [outages] 3556 problems
>
>
>
> Latest update from CenturyLink
>
>
>
> Notes History:
>
>
>
> 08/30/2020 15:31:25 GMT - The IP NOC continues to observe service 
> affecting alarms clearing as the configuration that was deployed 
> continues to propagate through the affected devices. Once affected 
> services have been confirmed restored and stable, a final notification 
> will be provided.
>
>
>
> 08/30/2020 14:46:29 GMT - The IP NOC with the assistance of the 
> Operations Engineering team confirmed a routing issue to be preventing 
> BGP sessions from establishing correctly. A configuration adjustment 
> was deployed at a high level, and sessions began to re-establish with 
> stability. As the change propagates through the affected devices, 
> service affecting alarms continue to clear.
>
>
>
> Due to the nature of this outage, it may be necessary to reset your 
> services locally at your equipment, or manually reset your BGP 
> session. If after that action has been performed a service issue 
> prevails, please contact the CenturyLink Repair Center for 
> troubleshooting assistance.
>
>
>
> 08/30/2020 13:19:02 GMT - The IP NOC has isolated multiple Border 
> Gateway Protocol (BGP) issues causing service impacts across multiple 
> markets. Cooperative escalated  investigation efforts with CenturyLink 
> leadership are underway to isolate and troubleshoot the issue and 
> expedite service restoral.
>
>
>
> 08/30/2020 12:14:09 GMT - The IP NOC advises cooperative escalated 
> investigation and troubleshooting efforts remain ongoing this time.
>
>
>
> 08/30/2020 11:36:30 GMT - The IP NOC is engaged in cooperative 
> escalated investigations to isolate and troubleshoot the fault at this 
> time.
>
>
>
> 08/30/2020 10:48:38 GMT - On August 30, 2020 10:04 GMT, CenturyLink 
> identified a market wide. As this network fault is impacting multiple 
> clients, the event has increased visibility with CenturyLink 
> leadership. As such, client trouble tickets associated to this fault 
> have been automatically escalated to higher priority.
>
>
>
> The NOC is engaged and investigating in order to isolate the cause. 
> Please be advised that updates for this event will be relayed at a 
> minimum of hourly unless otherwise noted. The information conveyed 
> hereafter is associated to live troubleshooting effort and as the 
> discovery process evolves through to service resolution, ticket 
> closure, or post incident review, details may evolve.
>
>
>
>
>
>
>
> Regards,
>
> Stephen Flynn
> Atlantic.Net
> Direct: (321) 206-1390
> sflynn at staff.atlantic.net <mailto:sflynn at staff.atlantic.net>
> www.atlantic.net <http://www.atlantic.net/>
>
>
>
> From: Outages <outages-bounces at outages.org 
> <mailto:outages-bounces at outages.org> > On Behalf Of Dylan Ebner via 
> Outages
> Sent: Sunday, August 30, 2020 11:00 AM
> To: Michael McDonald <mmcdonald at liquidweb.com 
> <mailto:mmcdonald at liquidweb.com> >
> Cc: outages at outages.org <mailto:outages at outages.org>
> Subject: Re: [outages] 3556 problems
>
>
>
>
>
>
> CAUTION: This email originated from outside of the organization. Do 
> not click links or open attachments unless you recognize the sender 
> and know the content is safe.
>
>
>
> Here is their latest update:
>
>
>
>
>
> The IP NOC with the assistance of the Operations Engineering team 
> confirmed a routing issue to be preventing BGP sessions from 
> establishing correctly. A configuration adjustment was deployed at a 
> high level, and sessions began to re-establish with stability. As the 
> change propagates through the affected devices, service affecting 
> alarms continue to clear.
>
>
>
> Due to the nature of this outage, it may be necessary to reset your 
> services locally at your equipment, or manually reset your BGP 
> session. If after that action has been performed a service issue 
> prevails, please contact the CenturyLink Repair Center for 
> troubleshooting assistance.
>
>
>
> Next update by: 2020-08-30 15:50 GMT
>
>
>
> This notification is sent from an unmonitored email account.  Please 
> click the link below to reply:
>
>
>
> mailto:SMC at CenturyLink.com?subject=RE%3A%20CenturyLink%20Ticket%20#:%2019545403, 
> <mailto:SMC at CenturyLink.com?subject=RE%3A%20CenturyLink%20Ticket%20#:%2019545403,&body=Customer%20Reply%3A%0D%0A> 
> &body=Customer%20Reply%3A%0D%0A
>
>
>
> Notes History:
>
>
>
> 08/30/2020 14:46:29 GMT - The IP NOC with the assistance of the 
> Operations Engineering team confirmed a routing issue to be preventing 
> BGP sessions from establishing correctly. A configuration adjustment 
> was deployed at a high level, and sessions began to re-establish with 
> stability. As the change propagates through the affected devices, 
> service affecting alarms continue to clear.
>
>
>
> Due to the nature of this outage, it may be necessary to reset your 
> services locally at your equipment, or manually reset your BGP 
> session. If after that action has been performed a service issue 
> prevails, please contact the CenturyLink Repair Center for 
> troubleshooting assistance.
>
>
>
> 08/30/2020 13:19:02 GMT - The IP NOC has isolated multiple Border 
> Gateway Protocol (BGP) issues causing service impacts across multiple 
> markets. Cooperative escalated  investigation efforts with CenturyLink 
> leadership are underway to isolate and troubleshoot the issue and 
> expedite service restoral.
>
>
>
> 08/30/2020 12:14:09 GMT - The IP NOC advises cooperative escalated 
> investigation and troubleshooting efforts remain ongoing this time.
>
>
>
> 08/30/2020 11:36:30 GMT - The IP NOC is engaged in cooperative 
> escalated investigations to isolate and troubleshoot the fault at this 
> time.
>
>
>
> 08/30/2020 10:48:38 GMT - On August 30, 2020 10:04 GMT, CenturyLink 
> identified a market wide. As this network fault is impacting multiple 
> clients, the event has increased visibility with CenturyLink 
> leadership. As such, client trouble tickets associated to this fault 
> have been automatically escalated to higher priority.
>
>
>
> The NOC is engaged and investigating in order to isolate the cause. 
> Please be advised that updates for this event will be relayed at a 
> minimum of hourly unless otherwise noted. The information conveyed 
> hereafter is associated to live troubleshooting effort and as the 
> discovery process evolves through to service resolution, ticket 
> closure, or post incident review, details may evolve.
>
>
>
>
>
> From: Michael McDonald <mmcdonald at liquidweb.com 
> <mailto:mmcdonald at liquidweb.com> >
> Sent: Sunday, August 30, 2020 9:56 AM
> To: Dylan Ebner <dylan.ebner at crlmed.com 
> <mailto:dylan.ebner at crlmed.com> >
> Cc: Jay Ashworth <jra at baylink.com <mailto:jra at baylink.com> >; 
> outages at outages.org <mailto:outages at outages.org>
> Subject: Re: [outages] 3556 problems
>
>
>
> Not on that ticket, so thanks a ton for the update! Execs are asking 
> questions about what's going on and it's nice to give them feedback!
>
>
>
> On Sun, Aug 30, 2020 at 10:52 AM Dylan Ebner via Outages 
> <outages at outages.org <mailto:outages at outages.org> > wrote:
>
> For those who aren't on the master CL ticket, here is the latest from 
> CL. Ticket number: 19545403
>
>
>
>
>
>
> 08/30/2020 13:19:02 GMT - The IP NOC has isolated multiple Border 
> Gateway Protocol (BGP) issues causing service impacts across multiple 
> markets. Cooperative escalated investigation efforts with CenturyLink 
> leadership are underway to isolate and troubleshoot the issue and 
> expedite service restoral.
>
>
>
>
>
>
>
> -------- Original message --------
>
> From: Jay Ashworth via Outages <outages at outages.org 
> <mailto:outages at outages.org> >
>
> Date: 8/30/20 9:36 AM (GMT-06:00)
>
> To: outages at outages.org <mailto:outages at outages.org>
>
> Subject: [outages] 3556 problems
>
>
>
> Okay, it's pretty clear that they're having trouble. :-) Let's limit 
> it now to actual tickets and reports of clearance.
> -- 
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>
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