Bandwidth Monitoring Tools for FreeBSD and Linux: iftop
Bandwidth represents the capacity of the connection. The greater the capacity, the more likely that greater performance will follow, though overall performance also depends on other factors, such as latency.
iftop is a free open-source tool to measure bandwidth utilization on the network interfaces on your systems. As the name predicts, iftop is what "top" utility is for CPU usage measurement.
To install iftop in CentOS, Fedora, RHEL ( make sure you have DAG repository enabled ):
# yum install iftop
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Bandwidth Monitoring Tools for FreeBSD and Linux: nload
Bandwidth in computer networking refers to the data rate supported by a network connection and it represents the capacity of the connection.
nload is a ncurse based network traffic analyser.
nload allow a system administrator to easily monitor the traffic going on its network. It provide both a graph of incoming and outgoing traffic as well as network data transfer statistics.
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