On March 5th at approximately 17:27 EST (GMT-5), a linecard on one of our core routers malfunctioned and began rapidly flapping ports. Two transit uplinks resided on this linecard, causing noticeable inbound traffic loss and eventually BGP dampening by our upstream neighbor. Once the linecard failure was detected by the switch and taken offline, the upstream dampening was lifted and traffic returned to normal without manual intervention.
Alex Forster
Network Engineer, Linode