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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.

To install nload in CentOS, Fedora, RHEL ( make sure you have DAG repository enabled ):

# yum install nload

To install nload in FreeBSD:

# cd /usr/ports/net/nload
# make install clean

To install nload in Ubuntu/Debian:

# sudo apt-get install nload

Start nload by typing the following command:

# nload if

where if is the network interface.

Example:

# nload rl0

nload traffic monitoring