Les Mikesell wrote: > On Thu, Feb 7, 2013 at 10:53 AM, <m.roth at 5-cent.us> wrote: >> >> >>> Have you actually configured the switch, or did you just plug it in and >>> get running? >> >> Unfortunately, *we* don't control these switches. They're from the >> networking division, which actually controls networking throughout the >> campus. We've had them in, they claim they looked at the switches >> remotely, and everything's wonderful.... We'll see what happens next >> week, >> when I do the next offline backups. >> >> Btw, we are on our own VLAN. The switch is on it. > > Is the traffic in question to something directly connected to this > switch and just appearing mirrored to the wrong port or perhaps > broadcast to all of them? Or is the actual destination on some other > switch where this one shouldn't even be in the path? If you want to > track the problem down you need to look backwards from the target and > figure out why the switches in between did not learn the correct path. > It is not likely to be related to the traffic bandwidth unless some > intermediate link is flooded to the point that nothing works. Let's try ASCII art: (campus net)->[vlan]->[new switch in rm. 1]-> server 1 \ -> server 3 \->[switch in rm. 2]->server 2 And he was seeing traffic between 1 and 2 on 3. And he tried another server in rm. 1, and saw it. Does that make it clearer? mark