FCC: Staff Report on T-Mobile Outage on June 15 2020
sean at donelan.com
Thu Nov 12 17:35:38 UTC 2020
FCC Issues Staff Report On T-Mobile Outage
The outage was initially caused by an equipment failure and then
exacerbated by a network routing misconfiguration that occurred when
T-Mobile introduced a new router into its network. In addition, the outage
was magnified by a software flaw in T-Mobile’s network that had been
latent for months and interfered with customers’ ability to initiate or
receive voice calls during the outage.
44. While fiber link failures are common, PSHSB finds that these steps,
taken together, will reduce the likelihood that a fiber link failure could
result in the recurrence of a similar event in TMobile’s network because
traffic would be routed to an alternative path that could handle it.
Moreover, if such an event recurred on T-Mobile’s network, it would not
cause such a large service disruption because T-Mobile would have improved
its networks’ ability to manage congestion in the case of a similar event
and would have increased network capacity to maintain the network in a
working state even with an increased volume of traffic.
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