Cisco Systems UBR900 User Manual

 Configuring the Cisco uBR900 Series Cable Access Routers 107

Related Commands

tuner_freq

Indicates the current downstream frequency.

symbol_rate

Indicates the downstream symbol rate in symbols per second.

local_freq

Frequency on which the transmitter and tuner communicate.

snr_estimate

Signal to noise estimate in dB X 1000.

ber_estimate

Bit error rate estimate (always 0).

lock_threshold

Minimum signal-to-noise ratio (SNR) that the Cisco uBR900 series will accept as a valid 
lock.

QAM status

Indicates if QAM/FEC lock has been acquired and the modulation mode in use.

tx_freq

Upstream frequency sent to the Cisco uBR900 series by the CMTS in the UCD message.

power_level

Transmit power level as set in the hardware, given as a hexadecimal value. The units are 
unique to the hardware used. Use the show controllers cable-modem 0 mac state  
command to see the power level in dBmV.

symbol_rate

Indicates the upstream symbol rate in symbols per second that is negotiated 
between the CMTS and the cable access router.

Displays high-level controller information about a 
Cisco uBR900 series cable access router.

Displays information about the baseline privacy key 
management exchange between the Cisco uBR900 series and 
the  CMTS.

Displays information about the Data Encryption Standard 
(DES) engine registers.

.Displays the registers in the MAC hardware that are used for 
filtering received frames.

Displays the mini-slot lookup table inside a Cisco uBR900 
series.

Displays detailed MAC-layer information for a Cisco uBR900 
series.

Displays the contents of the registers used in the downstream 
physical hardware of the Cisco uBR900 series.