This deprecated read-write object set one blanket disposition for an entire bundle of IEEE bridge-group control protocols, including BPDU (spanning tree), PAUSE flow control, LACP, LACP Marker, EFM OAM, and 802.1x port authentication, along with reserved MAC addresses 01:80:C2:00:00:04 through 0F. An administrator would have used it as a single group-wide policy before individual per-protocol disposition objects, like cmPortCpdProfileBPDUDispType and cmPortCpdProfileLACPDispType, existed. For example, modern configurations should use the specific per-protocol objects instead, since this deprecated group setting can no longer distinguish between, say, wanting to peer LACP while dropping 802.1x on the same port.