Are Broadcasts Contributing to Comcast Slowness?
April 2nd, 2007
I’ve been getting reports about Comcast slowness in this area for several weeks. Taking a closer look,a quick speed test confirmed that performance is awful. A look at the cable modem revealed that quite a bit of traffic was inbound without anything else plugged into the modem. A sniffer trace revealed that nothing was attacking the modem. Instead, all of the traffic is broadcast traffic coming from the Cadant Cable Modem Termination Device sitting on the Comcast network.
The Cadant device has broadcast storm protection, so perhaps the device is misconfigured or over-configured? Time to kick this over to Comcast support. Stay tuned.
