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Cisco Bug: CSCvu27487 - FXOS ASA race condition leading to cluster join failure and network outage

Last Modified

Sep 19, 2020

Products (1)

  • Cisco Firepower 9300 Series

Known Affected Releases


Description (partial)

In rare cases, when a new device is joining the cluster, the data interfaces may be brought up when the application thinks that they are down.  The result is that traffic may get black-holed for a period of time (less than 60 seconds) and the application may fail to join the cluster with an interface health check failure.

Cisco Firepower running FXOS 2.4.1 and ASA configured as a cluster member.  May occur after an upgrade or other time when adding a device back to the cluster.
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