The Ethernet connection on a newly-installed Hitron CGNM-2250 on a Shaw 150 account is always showing 100 Mb/s (green occasionally flashing) and never 1000 Mb/s (blue flashing) as indicated in Hardware Information - Hitron CGNM-2250 DOCSIS 3.0 Wi-Fi Modem. The Ethernet is connected to a Linksys EA3500 modem in Bridge mode with three Raspberry Pis attached; each show only 30 Mb/s download and 15 Mb/s upload, i.e. 1/3rd of 100 Mb/s upload.
How do I get the Hitron to output 1000 Mb/s Ethernet? The Linksys and all the Pis are 1000 Mb/s-capable.