While Linux has "brctl show" command, I cannot find any similar for AIX.
Question: How can we show AIX bridge settings?
On a VIOS as padmin user, you can show all SEA adapters via lsmap -all -net and you can see their defined attributes via lsdev -dev <devicename> -attr. For the current running configuration, you can see the status and much more via entstat -all <devicename>.
For information on how to create a SEA using VIOS command line, see Configuring a Shared Ethernet Adapter with the Virtual I/O Server command-line interface
For help on the commands see the VIOS man pages in infocenter
What are you looking for in particular?
lsattr -E -l <device>orlsdevgive any result ? (you have to figure out lsdev opt, I don't have an AIX at hand.