Getting Modem Statistics to Cacti

I’ve been having problems with a flaky DSL connection from CenturyLink. My modem would frequently ‘retrain,’ that is, disconnect and reconnect the DSL session. This is rather annoying, and since I use VoIP for most phone calls when I’m at home, very irritating.

I wanted a method to log the modem’s statistics and see if I could find any correlation with the drops. One of the unfortunate realities with consumer level equipment is the lack of standard monitoring capabilities. Most enterprise level equipment support SNMP, which allows various software programs to request information.

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CFML Custom Function – URLExists

One of the updates I had to make today at work was to check if an item exists at a certain URL. Since this was going to be repeated, I wrote my own ColdFusion function to perform this task.