Cisco uBR10012 Software Configuration Manual page 60

Supported Software Features for the Cisco uBR10012 Router
The CMTS administrator defines and pushes DHCP and DOCSIS configuration files to appropriate
servers so that each CM or CM in an STB on the network, when initialized, can transmit a DHCP request,
receive its IP address, obtain its TFTP and ToD server addresses, and download its DOCSIS
configuration file (and updated software image, if needed).
For additional information, refer to the
Cisco.com.
Connecting DOCSIS 1.0-Based CMs
DOCSIS 1.0-based CMs cannot connect to the broadband network until the following processes occur:
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Initial and station maintenance management messages are sent to maintain communications between
CMs and the CMTS. The following example displays CM reinitialization:
6d17h:580447.276 CMAC_LOG_DRIVER_INIT_IDB_RESET
6d17h:580447.280 CMAC_LOG_LINK_DOWN
6d17h:580447.282 CMAC_LOG_RESET_FROM_DRIVER
6d17h:580447.284 CMAC_LOG_STATE_CHANGE
wait_for_link_up_state
6d17h:580447.286 CMAC_LOG_LINK_UP
6d17h:580447.290 CMAC_LOG_STATE_CHANGE
ds_channel_scanning_state
6d17h:580447.416 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
81/453000000/855000000/6000000
6d17h:580447.420 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
82/93000000/105000000/6000000
6d17h:580447.424 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
83/111025000/117025000/6000000
6d17h:580447.428 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
84/231012500/327012500/6000000
6d17h:580447.432 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
85/333025000/333025000/6000000
6d17h:580447.436 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
86/339012500/399012500/6000000
6d17h:580447.440 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
87/405000000/447000000/6000000
6d17h:580447.444 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
88/123012500/129012500/6000000
6d17h:580447.448 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
89/135012500/135012500/6000000
6d17h:580447.450 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
90/141000000/171000000/6000000
6d17h:580447.454 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
91/219000000/225000000/6000000
6d17h:580447.458 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
92/177000000/213000000/6000000
6d17h:580447.462 CMAC_LOG_WILL_SEARCH_DS_FREQUENCY_BAND
93/55752700/67753300/6000300
Cisco uBR10012 Universal Broadband Router Software Configuration Guide
1-40
The CM initializes and ranges through available frequencies until it finds the first frequency that it can
use to communicate to the CMTS—known as scanning for a downstream channel.
The CM obtains upstream parameters and performs ranging.
The CM goes through the DHCP server process and establishes IP connectivity, ToD, and security
(optional). At this point, the CM cannot determine if it is communicating on the correct channel.
The CM receives a DOCSIS configuration file from the TFTP server. One of the parameters in the
DOCSIS configuration file tells the CM which channel it can use.
The CM registers with the CMTS.
If the network supports DOCSIS BPI or other secure data sets, encryption/decryption processes are
initialized.
The CM is ready for normal operations. Once initialized and operational, CMs send requests to initiate
data transmission to the CMTS.
The CMTS system administrator or customer service representative ensures that appropriate databases
are updated to activate and support the new subscriber account in the provisioning, billing, or network
management systems in use for the network. Each CM or STB serial number and MAC address is
typically stored in the billing and administrative system.
Chapter 1 Overview of Cisco uBR10012 Universal Broadband Router Software
Cisco Cable Modem Termination System Feature Guide on
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