22-09-2020, 03:30 PM
ABMJR: really? Why should it be self signed by the ISP? The manufacturer and cable modem certificate are chained with the Docsis Root-Certificate. This Docsis Root-Certificate is installed at the CMTS. If the ISP is using a "self signed" certificate for the cable modem he has to update the Manufacturer and cable modem certificate on the cable modem. This is not a easy part, besides the fact it's not standardized by the Docsis specification.