If you're using a different OS, your installation will vary slightly. I am using a Fedora 32 VM to demonstrate this tool. You need to install libpcap (which is used for capturing the interface data in real time), as well as libncurses (an API used for building text-based interfaces independent of a terminal). Installationīefore you install the iftop tool, you need a few prerequisite packages. Let's look at the process of installing and using this practical tool. There is no problem, just an excess of activity on the interface. This can be incredibly efficient when you consider how long it might take you to come to that conclusion by troubleshooting the interface itself. When applied to the situation I described above, you can run the iftop command to see what is actually using the bandwidth across the data replication interface. Specifically, it monitors the bandwidth of active ethernet interfaces. Much like top and htop, the iftop command is used to resource usage on your system. The best troubleshooting techniques are the quick, effortless steps that you take to eliminate one of many potential outcomes.
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