Brian, I have used Ethereal, and it looks OK, but I haven't tracked any real problems with it. I have noticed the large number of IPX broadcasts (along with ATP broadcasts, but we have fewer of those) on my local network. I have been told that IPX doesn't negotiate an optimum window size for for bulk packet transfers, it sends one packet at a time, which can be pretty inefficient. Is everything switched, or do you have some hub segments? If you do have some larger collision domains, are the problems located there (or downstream from there)? Just stirring things up, and wishing you good luck! Troy >>> lxy at cloudnet.com 02/27/02 10:23AM >>> As our network grows and our laziness takes over, bad things start to happen. We're running in a Novell/NT hybrid environment and we've isolated down some issues that we think equates to some nasty congestion on the network. When 8:00 hits, the network slows to a crawl in parts of the net. I'd like to set up a linux laptop to watch our network for some things that should not be. Specifically: Protocols (shouldn't be anything other than TCP/IP and IPX) Frame types (Ethernet 802.2 only) What software would you suggest using for such a project? I know linux kicks Microsoft where it hurts when it comes to tracking down these problems, but I don't know what applications to use. Thanks! -Brian _______________________________________________ Twin Cities Linux Users Group Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.mn-linux.org/mailman/listinfo/tclug-list