How to monitor network bandwidth using Iftop
Monitoring Network Bandwidth by using Iftop
Iftop is defined as an Interface Top. It is a command-line system monitoring tool that produces a frequently-updated list of network connections. It is a real time network bandwidth monitoring tool that displays a quick overview of network activities.
To Install Iftop
[root@linuxhelp Desktop]# yum install iftop
Loaded plugins: aliases, changelog, fastestmirror, kabi, presto, refresh-packagekit, security, tmprepo,
: verify, versionlock
Loading support for CentOS kernel ABI
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: centos.webwerks.com
* extras: centos.webwerks.com
* rpmforge: mirror.oscc.org.my
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Installing : iftop-1.0-0.pre3.el6.rf.x86_64 1/1
Verifying : iftop-1.0-0.pre3.el6.rf.x86_64 1/1
Installed:
iftop.x86_64 0:1.0-0.pre3.el6.rf
Complete!
Run the iftop command to monitor the network bandwidth.
[root@linuxhelp Desktop]# iftop
Press option ‘ S’ to view the port number of the source host.
Press option ‘ D’ to view the port number of the destination host.
To display both source and destination port number press ‘ p’ .
To Pause iftop press ‘ P’ .
To hide the source host ip address press ’ s’ .
To hide the destination host ip address press ‘ d’ .
To hide the statistics bar press ‘ b’ .
To display the cumulative totals press ‘ T’ .
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