TTG (SNMP Text Traffic Grapher)
TTG is a small command line utility that displays current throughput (bandwidth usage) on an interface of a remote device such as router, switch, firewall, etc., over SNMP. 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 when configuring MRTG, as a means of using the data in text form (eg. copy&paste in to an email or spreadsheet) or just a general purpose command line network administration aid.
Access TTG here.