My Netgear CM1000 modem only connects at 100 Mbps (Amber light) and not it's usual 1000 Mbps (green light). I've tried different CAT 5e and CAT 6 cables, no change. Using a Netgear R7000 router immediately behind the modem. Any help would be greatly appreciated. Seems a sad shame to be paying for this bandwidth and only receiving 1/10th of the possible download speed.
What do the modem's signal stats look like ? Try getting them here; http://192.168.100.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.