On Wed, Feb 6, 2013 at 11:19 AM, SilverTip257 <silvertip257 at gmail.com> wrote: > > If one of your hosts intermittently loses connectivity, the switch will > broadcast that traffic to all ports because it can't find the host's MAC > address. > > (And what Les said about the switch broadcasting traffic until it learns > MAC addresses.) Some spanning tree events will force the switch to re-learn MACs too. -- Les Mikesell lesmikesell at gmail.com