In terms of functionality, and how ASA is using this information - nothing. Both commands will override hardware MAC address, and use this given one.
If I remember correctly, as of certain version of ASA code (I'm not sure exactly which one, maybe 9.5), if "failover mac" is used, you'll get a warning that this command will soon be deprecated, and that you should move to interface MAC command.
Either way, I would recommend using one or another option (I personally use one under interface, for some time now), as it is quite handy in case your primary unit fails, it can make your life bit easier ;)
Cisco is happy to announce their Fall release, FTD 6.7/ASA 9.15.1/FXOS 2.9, which consists of 104 features across 24 initiatives, addressing technical debt while staying true to our five core investment areas: Ease of Use and Deployment, Unified Policy an...
Hi Team, I have one exclusion provided by internal team which is Is it right way to exclude ? *\Program Files\XYZ\* , as per Cisco Docs i see its not recommended because it will create performance issue when we use * at starting , So...
Central Log Management using Cisco Security Analytics and Logging, December 2nd at 8am-9:30am PT
Cisco Security Analytics and Logging is Cisco’s Central Log Management solution for Network Operations and Security Outcomes. It is delivered both as a c...