the lazy mans HW research

morning gentle people. i find myself in need of a multiport (8-16) 1 Gig ethernet HUB. or a switch smart enough to do transparant port mirroring to at least four ports. some kind soul pointed me here, http://www.dlink.com/products/?pid=337 but its not clear if this will actually perform as desired. suggest to the suggestable listener? --bill