Juniper Networks G10 CMTS manual Configuration, State, and Alarm Data

Chassis Control Module

•Configuration, State, and Alarm Data

•	The Chassis Control Module stores configuration files for all DOCSIS Modules and itself.
•	When a module boots, the Chassis Control Module sends the appropriate configuration file to
•	that module. Configuration files are ASCII text in a format readable by the command-line
•	interface. Users can edit these files on the CMTS or on an external host with any standard
•	text editor (see the JUNOSg Software Configuration Guide: Getting Started and System
•	Management for more information on configuration). The Chassis Control Module also
•	provides configuration data to management applications.
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•	The Chassis Control Module polls each DOCSIS Module for state information, then stores that
•	data. This includes ranging and registration data on the cable modems and a backup of the
•	DOCSIS Modules’ memory and tables. Polling occurs at regular intervals to keep the data
•	current.
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•	The Chassis Control Module collects and stores events from itself and the DOCSIS Modules
•	within the local event log. It uses this information to control the LEDs and provides this data
•	to management applications.
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•	The Chassis Control Module monitors the power supplies for the failure and degraded
•	performance signals that they generate.
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•	The Chassis Control Module monitors the fans for failures. If a fan in any of the multifan trays
•	fails, the module sends a signal to increase the speed of the remaining fans and conditionally
•	generates an event.
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•Physical and Electrical Characteristics

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•	This section describes the physical dimensions, electrical characteristics, and components of
•	the front panel of the Chassis Control Module. See Table 11 through Table 14 on page 41.
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•	The Chassis Control Module installs into the chassis from the front. Midplane slots 6 and 7
•	are designated for this module. One module is required to manage the chassis.
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•	Each Chassis Control Module consumes 29 watts maximum power.
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40 JUNOSg 3.0 G10 CMTS Hardware Guide