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Does a DOCSIS 1.1 configuration file work in 2.0 mode?

April 26, 2017configuration docsis file mode

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Does a DOCSIS 1.1 configuration file work in 2.0 mode?

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A. Any DOCSIS 1.1 configuration file works in 2.0 mode. Even a DOCSIS 1.0 configuration file works. There is one special type, length, value (TLV) field that prevents the modem from working in a 2.0 mode, even if it is capable. DOCSIS 2.0 has nothing to do with QoS, it is only a new physical layer (PHY) chip. Therefore, the MAC version determines whether the cable modem is capable of doing 1.0/1.1 or 2.0. At 2.0-capable modem should come up automatically in a 2.0-provisioned environment, because the TLV 39 field must equal 1. If the TLV 39 field is left blank, then it defaults to value of 1 and registers in 2.0 mode. You must set the TLV 39 field to 0 in order to prevent the 2.0-capable modem from coming up in 2.0 mode. Then, it is forced to come up in 1.x mode.