A network management assembly is disclosed for managing a flow of network management traffic across a network containing a plurality of discrete network domains. The catalyzed inlet zone has a porosity that is at least \u2153 the porosity of a wall of the ceramic honeycomb that does not have a catalyst in the wall. To the extent there is a frame-wide change, the pixel characteristic in interpolated frames is accommodated by the frame-wide change. A sliding fit or seat is formed between the longitudinal portions or sections of the floor rail and the intermediate profile.