On November 10th, 2020, at 21:20 UTC, Linode Network Operations Team responded to alerts of networking issues occurring in our Newark data center. Upon investigation, it appeared a secondary core switch had rebooted unexpectedly. These switches are in a redundant pair. Unfortunately, this reboot resulted in the primary switch entering a suspended state to protect itself from a split-brain scenario. This was not expected nor desired behavior, and we are currently working with the switch vendor to better understand and explain why this occurred. The normal behavior during a failure like this should be the continued operation of the primary switch. During the outage, the NetOps team identified the issue and monitored the recovery of the primary switch. A deeper investigation revealed a failed line card on the secondary switch. This card has been replaced.