CAM table for bridge domian interface

[jamesma01]

                 when configuring BDI on router, and assigning several ports in the same service instance, will a CAM table be built for each service instance? if not, I guess the ethernet frames will be flooded to all ports in the same service instance except the incoming port?

your comments are much appreciated. 

[jamesma01]

Just for whoever cares, I found a good article as below explaining how it works.

https://supportforums.cisco.com/docs/DOC-21299

it seems if it is p2p, there is no MAC leaning, but if there are multiple ports in BDI, there is CAM table.