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Cisco Bug: CSCup45328 - ASA failover sync issue when monitoring interface on module 1 ports

Last Modified

Feb 19, 2018

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases


Description (partial)

An ASA taking over the Active role due to an interface failure of any port in Module 1 may get stuck in a failover synchronization loop. This will cause a traffic outage as the unit that should be Active will get stuck in a failover loop, and the other unit will be in the Standby state.

This only occurs if interface monitoring if the onboard ports are used on the device in module 1. It is primarily observed  if the card in module 1 is only used for ports but not for services (ie. CX, IPS, etc)
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