Cisco Bug: CSCut08663 - Both ASAs in failover use the same MAC address
Apr 13, 2018
- Cisco ASA 5500-X Series Firewalls
Known Affected Releases
8.4(7) 9.0(4) 9.1(2) 9.1(4) 9.1(5.21) 9.1(6) 9.3(2)
Symptom: - If manually configured the "mac-address mac_address [ standby mac_address ]" within the physicall interface, bot ASAs active and standby will use the same active MAC address disrupting the traffic. - If the "mac-address" command is used within the subinterface then both ASAs will negotiate properly the MAC address based on the failover state. Conditions: ASAs in failover with an interface using subinterfaces.
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