DSLstats started off to monitor line stats for the Huawei HG612 in a linux environment.  It has come a long way since its early days and now supports a long list of Broadcom based routers in Linux and Windows environments. 

DSLstats has a feature rich interface providing intricate details about your line conditions, recording details for both ADSL and VDSL (fibre) connections. The list of information it can display about your line is practically endless, yet it is still relatively easy to set up.  This is a definite 'must have' if you own one of the supported routers and have connection problems.

Features: Accesses BusyBox shell Line stats & other telnet data Customisable graphs Saves daily graphs as .png Saves data in xml Ability to restore xml graph data Monitors & Graphs: SNR Margin Connection Speed Attenuation CRC/FEC Errors Bit loading & Bit swaps QLN HLog Bandwidth traffic (beta)

Routers known to work with:- Most Broadcom based routers with access to the shell.
Includes, Belkin, Billion, D-Link, Dynalink, Huawei, Netgear, Thomson and more.  See here for specific model info