show mac-address-table not working on ASA5512

[John N Smith]

Hi,

I'm unable to excute "show mac-address-table" on an ASA5512, running 9.1(1). The output is: 

asa-test# show mac-address-table
                 ^
ERROR: % Invalid input detected at '^' marker.

Has the command changed for this model / version? It works fine on ASA5505's running 8.4(5).

Thanks for your time,

John

[Peter Paluch · Accepted solution]

Hi John,

I am actually surprised that there is anything like show mac-address-table on an ASA box, as this command is more common on switches that maintain the MAC-to-switchport table. Did you perhaps mean show arp instead?

Best regards,
Peter

[John N Smith]

Ah, Peter, the smaller ASA5505 contains a built-in switch that the ASA5512 does not - "show mac-address-table" must be querying that. 

Thanks for your help,

John

[cadet alain]

Hi,

this command would indeed work on another ASA platform if this firewall was in transparent mode.

As you said the ASA 5505 is a little bit special because the interfaces are L2 switchports and so this command is also working in routed mode on this platform.

Regards

Alain