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Cisco Bug: CSCun48868 - ASA changes to improve CX throughput and prevent unnecessary failovers

Last Modified

Apr 16, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

100.8(0.1) 9.0(1) 9.1(1)

Description (partial)

An ASA with a Next-Gen Firewall (CX) Module might experience the following problems when the CX module is inline with the traffic flow.

1) If the ASA is part of a failover pair, it might detect that the CX module is down, which could trigger a failover of the ASAs. This problem might occur intermittently.
2) The performance of connections through the CX module might be degraded. This is noticed most often when performing single-flow TCP throughput testing.

To encounter this problem, the CX must have a CX module and be passing traffic to the module for inspection.

Related Community Discussions

Cisco ASA/CX module cxsc experienced a data channel
I am experiencing an issue with Cisco ASA CX module, which is throwing the below error very frequently.   module cxsc experienced a data channel communication failure data channel is down " " module cxcs data channel communication is UP " these errors continuously coming in ASA seems it look like bug or hw failure   ASA version CX version   Please help.
Latest activity: Feb 25, 2015
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