[Core Network] Service Alert 5th February 2019
Posted by David Croft on 05 February 2019 12:37 PM
This is an incident notification regarding an outage on our core network.

Date: Tuesday, 5th February 2019
Start time: 11:00 GMT
End time: 11:13 GMT

Services affected:

Internet connectivity (external)


During this window packet loss and high latency were experienced to
multiple destinations by ISPs worldwide.

The root cause was multiple device failures at Tier 1 network service
provider CenturyLink.

The impact of this outage was not limited to our network and ISPs
worldwide were affected during reconvergence.

Connectivity to IP Voice services and directly peered networks was not impacted.

External notes appear below.


David Croft

02/05/2019 11:49:06 GMT - The IP NOC has engaged an equipment vendor,
Tier III Technical Support, and Operations Engineering to investigate
multiple devices that went down. Stability is being validated after
most of the devices recovered without any intervention.

02/05/2019 11:19:42 GMT - On February 05, 2018 at 11:00 GMT,
CenturyLink identified a service impact in between in all markets
network wide. The IP NOC is engaged and currently investigating the
suspected equipment issue. 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.

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