show controllers cable-modem tuner

 

Table 9

Show Controllers Cable-Modem Tuner Field Descriptions

 

 

 

 

 

Field

Description

 

 

 

 

 

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 uBR924 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 uBR924 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.

 

 

 

 

Related Commands

 

 

 

 

 

 

 

Command

 

Description

 

 

 

 

show controllers cable-modem

Displays high-level controller information about a Cisco

 

 

 

uBR924 cable access router.

 

 

 

 

show controllers cable-modem bpkm

Displays information about the baseline privacy key

 

 

 

management exchange between the Cisco uBR924 and the

 

 

 

CMTS.

 

 

 

 

show controllers cable-modem des

Displays information about the Data Encryption Standard

 

 

 

(DES) engine registers.

 

 

 

 

show controllers cable-modem filters

.Displays the registers in the MAC hardware that are used for

 

 

 

filtering received frames.

 

 

 

 

show controllers cable-modem

Displays the mini-slot lookup table inside a Cisco uBR924.

 

lookup-table

 

 

 

 

 

 

show controllers cable-modem mac

Displays detailed MAC-layer information for a Cisco uBR924.

 

 

 

 

show controllers cable-modem phy

Displays the contents of the registers used in the downstream

 

 

 

physical hardware of the Cisco uBR924.

 

 

 

 

Troubleshooting Tips for the Cisco uBR924 Cable Access Router 57

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Cisco Systems UBR924 manual Show controllers cable-modem