Bandwidth Monitor for ur Debian
This is a small bandwidth monitor. Monitors up to 16 interfaces and shows totals at the same time.
Here is the installation in Debian.

#apt-get install bmw

This installs the tool and try the following command to try it.

#bmw

For more information, look in man pages. The output of the above command is as follows.

Bandwidth Monitor 1.1.0

Iface RX(KB/sec) TX(KB/sec) Total(KB/sec)

lo 0.000 0.000 0.000

eth0 0.327 0.326 0.653

eth1 0.000 0.000 0.000

Total 0.327 0.326 0.653

Hit CTRL-C to end.

See, It's really easy. Now you can check ur bandwidth with no trouble. Try it & feel it. Bye. C u.