Last week our network was intermittently brought to it’s knees for short periods of time because of what appeared to be unicast packet storms. What we experienced looked almost exactly like this:
https://supportforums.cisco.com/discussion/12395006/packet-storm-c3750x Another person who saw the same thing pinpointed it to faulty Apple Thunderbolt Displays (which we do have plenty of on our network): https://discussions.apple.com/thread/6443650?start=0&tstart=0 I’ve tried to search for the garbage hardware addresses in our switch address tables, but the results come up blank. I don’t know why it comes up blank, but assume it has something to do with the nature/character of the packet storm to begin with. For instance, I *think* I read somewhere a long time ago that Netgear Smart switches will devolve to dumb hubs if they are spammed with too many hardware addresses in a short period of time. If that’s the case, I could see that contributing to the problem. Given the limitations of my Netgear Smart Switches what other tools and techniques would you use to try to track down the source of this kind of traffic? Any pointers are most appreciated! Gil _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
