modem is authorized by the CMTS for use on the network, and configures itself according to parameters that are passed to it from a provisioning server. This sequence of events occurs automatically without user involvement. The process of initializing a DOCSIS 3.0 modem on a HFC network is divided into the followingphases:
(1) Once the cable modem is powered up, it scans the network for both a downstream and upstream channel that supports the transfer of data.
(2) After locating the channels is complete, the cable modem informs the headend of its presence on the broadband network by sending a variety of parameters back to the CMTS.
(3) Once the cable modem has been assigned to the network topology, it needs to be authenticated. This typically requires the cable modem to send a digital certificate, which is installed during manufacturing, to the CMTS for validation. Once validated a series of keys are generated and used to encrypt the data transferred across the network.
(4) After the modem is connected to the cable network, it must invoke DHCP mechanisms to obtain an IP address, which is part of the operators authorized address space. Note that DOCSIS 3.0 allows IPTV network administrators to configure cable modems for both IPv4 and IPv6 address formats.
(5) Once the modem receives an IP address, it downloads a configuration file that has parameters the cable modem needs to configure itself. Time of day information is also downloaded to the modem.
(6) Once the modem has been configured and authorized, the CMTS authorizes resources at the MAC layer and the cable modem can use the network like any standard Ethernet network device.
(1) Once the cable modem is powered up, it scans the network for both a downstream and upstream channel that supports the transfer of data.
(2) After locating the channels is complete, the cable modem informs the headend of its presence on the broadband network by sending a variety of parameters back to the CMTS.
(3) Once the cable modem has been assigned to the network topology, it needs to be authenticated. This typically requires the cable modem to send a digital certificate, which is installed during manufacturing, to the CMTS for validation. Once validated a series of keys are generated and used to encrypt the data transferred across the network.
(4) After the modem is connected to the cable network, it must invoke DHCP mechanisms to obtain an IP address, which is part of the operators authorized address space. Note that DOCSIS 3.0 allows IPTV network administrators to configure cable modems for both IPv4 and IPv6 address formats.
(5) Once the modem receives an IP address, it downloads a configuration file that has parameters the cable modem needs to configure itself. Time of day information is also downloaded to the modem.
(6) Once the modem has been configured and authorized, the CMTS authorizes resources at the MAC layer and the cable modem can use the network like any standard Ethernet network device.
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