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Cisco Bug: CSCur55568 - Cluster NAT both sensors responding to ARPs from DNAT SNAT traffic

Last Modified

Apr 13, 2020

Products (42)

  • Cisco Firepower Management Center
  • Cisco FirePOWER Appliance 7050
  • Cisco FirePOWER Appliance 8120
  • Sourcefire 3D6500 Sensor
  • Cisco FirePOWER Appliance 8360
  • Cisco FirePOWER Appliance 8260
  • Sourcefire Defense Center 1000 Chassis
  • Cisco AMP 8150
  • Cisco FirePOWER Appliance 8130
  • Cisco AMP 7150
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Known Affected Releases 5.4.0 6.0.0

Description (partial)

Both the primary and secondary device of the cluster respond to the address resolution protocol (ARP) detected in matching traffic when only the primary device should respond.

If you configure your cluster of routed Series 3 managed devices with Cisco Redundancy Protocol (SFRP) and apply a
network address translation (NAT) rule.
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