Cisco Systems UBR904 manual Use Additional Troubleshooting Commands

Use Additional Troubleshooting Commands

Event 11—Enter the Maintenance State

As soon as the cable modem is completely up and running, it enters the operational maintenance state.

508178.322 CMAC_LOG_STATE_CHANGE maintenance_state

Use Additional Troubleshooting Commands

You can use other show controller and debug cable modem commands to troubleshoot different aspects of a cable modem. However, the most useful command is the show controller cable-modem 0 mac command.

To display additional controller information inside a cable modem, enter one or more of the following commands in Privileged EXEC mode:

Command	Purpose
show controller cable-modem	Displays high-level controller information.
show controller cable-modem bpkm	Displays privacy state information.
show controller cable-modem des	Displays information about the Data Encryption
	Standard (DES) engine registers.
show controller cable-modem filters	Displays information about the MAC and SID cable
	modem filters.
show controller cable-modemlookup-table	Displays the mini-slot lookup table inside a cable
	modem.
show controller cable-modem mac [errors hardware	Displays detailed MAC layer information.
log resets state]
show controller cable-modem phy	Displays physical layer information, such as receive
	and transmit physical registers.
show controller cable-modem tuner	Displays tuning information.

To debug different components of a cable modem, enter one or more of the following commands in Privileged EXEC mode:

Command	Purpose
debug cable-modem bpkm {errors events packets}	Debugs baseline privacy information.
debug cable-modem bridge	Debugs the bridge filter.
debug cable-modem error	Debugs cable interface errors.
debug cable-modem interrupts	Debugs cable modem interface interrupts.
debug cable-modem mac {log [verbose] messages}	Displays and debugs the MAC layer log entries in
	real time.
debug cable-modem map	Debugs map message processing information.

Troubleshooting Tips for the Cisco uBR904 Cable Modem 15