You can use the iftop rpm package from DAG repository. Just download of el5 package for your arch from http://dag.wieers.com/rpm/packages/iftop/
Dear All Can you please do me favor and let me know what is the equivalent of "iftop" command on CentOS 5.2 ? Please be informed that I couldn't find an rpm package for "iftop" on the www.pbone.net . Let me thank you in advance