In one embodiment, a method is provided. In the method of this embodiment, one operating mode of port circuitry may be selected from a plurality of operating modes of the port circuitry that may correspond to respective sets of one or more communication links via which the port circuitry may be capable of communicating when the port circuitry is operating in the respective operating modes. Each of the respective sets of one or more communication links may be different from each other. The method of this embodiment also may include selecting, based at least in part upon the one operating mode of the port circuitry, a set of filters. The port circuitry may be capable of determining, based at least in part upon the set of filters, whether to drop a packet that is received, or intended to be transmitted by the port circuitry.