TTG is a small command line utility that displays current throughput
(bandwidth usage) on an interface of a remote device such as router/
switch, over SNMP (v1). You can think of TTG as command line version
of STG or a high-interval/ad-hoc query/test tool for MRTG, etc. The
output is very similar to ping(1) command. You can use it to quickly
check/measure traffic before waiting 5 minute cycle, or when
configuring MRTG.

Get it here: http://www.tenox.tc/out#ttg

Regards