These are a couple of Python scripts to collect statistics information from Virgin Media cable modems (originally SuperHub v1 and the SuperHub v3; I've never had a SuperHub v2) and pass the information into collectd. I no longer have a Virgin line, but I'm releasing these scripts, rough and ready as they are, in the hope they may be of use to others.
At present the configured upstream/downstream line rate and the per channel upstream/downstream power levels are logged, but the scripts could easily be extended to log more details if required. I found this useful to discover when Virgin had regraded my line to a higher speed, and track potential issues due to line quality problems.
To use with collectd you will need to put the scripts somewhere appropriate (I
went for /usr/local/lib/collectd/) - copy the appropriate version for your
cable modem as collectd_virgin_cm, possibly change URLBASE to point to the IP
address yours lives on (I was running it in modem mode) and edit
/etc/collectd/collectd.conf (assuming that's where your collectd config
lives) to ensure the
LoadPlugin python
line is uncommented. You will also need to add a configuration stanza:
<Plugin python>
ModulePath "/usr/local/lib/collectd"
Import "collectd_virgin_cm"
<Module collectd_virgin_cm>
</Module>
</Plugin>
Note on implementation: For the SuperHub v1 the script screen scrapes the web interface to obtain the appropriate information. There's a strong potential for this to break if Virgin change the firmware but I suspect there's not a lot of development going on for these devices (when they sent me a replacement v3 hub they did not want the v1 returned). The v3 interface offers a sort of SNMP over HTTP JSON interface, so I suspect is likely to be more stable (and is certainly easier to parse).