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Most Popular Monitored Item For 2017 Is Bandwidth Monitoring

In 2017, I have encountered lots of request to do bandwidth monitoring.  When the network is slow or congested, IT managers would usually look to monitor the bandwidth.  Bandwidth monitoring can be done in two ways. 1. Via SNMP SNMP, or Simple Network Management Protocol, allows IT manager to monitor bandwidth consumption of devices at port level.  The pros of this method is that it is easy to setup.  The cons is that what is seen is bandwidth utilisation out of the port only. IT managers won't be able to identify where it is going or coming from. 2. Via Flow technology Some switches and routers have Flow technology installed.  Flow technology allows to identify more details of the bandwidth consumption. IT managers can see which application is using the bandwidth, Top Talkers (Uploaders), Top Listeners (Downloaders), etc.  Depending on the brand, Flow technology comes in different names, ie Cisco - netFlow, HP - sFlow, Juniper - jFlow, Huawei - hFlow.  Pros - Provides more detailed information of bandwidth consumption. Cons - Configuration can be a challenge as IT managers need to know how to configure to point the flow information from the device to the flow analyser.

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