Discover unkown client on network consuming 50% bandwidth on 3rd shift

Unanswered Question
Aug 26th, 2010

I am seeing a bandwidth spike at around 2:40am every morning that lasts for about 10 mintues but I can't remember how to find what the device is that is causing it. I have a Fluke Optiview II network analyzer connected to the network but it only shows me the top hosts on the current vlan. It has been a few years since I did this and just need a refresher on how to configure the port on the switch so it sees all traffic from all vlans and switches so I can identify the culprit. I am pretty sure it was a debug command.

I have this problem too.
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Panos Kampanakis Fri, 09/03/2010 - 12:17

You course also leverage Netflow to get information about connections and thus find top talkers and where the bw is spent.

I hope it helps.



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