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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

2.4(1.252)

Description (partial)

Symptom:
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.

Conditions:
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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