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Kedare
Asked: 2012-10-31 00:48:48 +0800 CST

What could cause our enterprise network to be more loaded at night?

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I've setup a network monitoring using Observium but I see something really strange, on 3 buildings (2 Production laboratories and 1 office) (There are no servers connected on those switchs), the network is more loaded at night than at day .

Here are the graphs (one per building, this is the global traffic on the whole switch) :

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On those swith are connected :

  • Desktops (should be shutdown at night)
  • Wyse client (same thing)
  • CCTV
  • Printers
  • Environment monitoring

Have you any idea of what can this be ?

Thank you

networking

2 Answers

  1. Backups? Windows updates? pr0n? - Is this a problem?

    I think this depends more on your environment and your users' activities more than anything else. We can't necessarily tell you what's happening in your infrastructure.

    Observium is a good start. You could probe the network, perhaps set up Wireshark or Ntop on a span port on the switch... That can help you analyze traffic. Do you have any insight into firewall/internet traffic during those times of higher activity?

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  2. Best Answer

    We just found it was the CCTV network that uses more data by night

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