From Eric Chapman:
RS-UX for Linux (64-bit) is a program for monitoring a DSL connection for use with Broadcom-based modem or routers. It monitors the state of an ADSL or VDSL2 connection. They work with DSL routers using Broadcom chipsets, which have a fully functional telnet interface with access to the Broadcom CLI. All of the data is obtained from the CLI via telnet. Data is displayed in graphical form, and also can be seen in raw telnet CLI format. Some basic stats are displayed in the status bar at the bottom of the window You can start, pause recording, or stop recording.