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Cisco Broadband Cable Command Reference Guide
OL-1581-07
Chapter 6 Cable CPE Commands
show controllers cable-modem
Note
The
show controllers cable-modem 0 all
command displays extensive information about the current
state of the modem and its MAC-layer and PHY-layer registers and buffers. You need to open a capture
buffer on your terminal or Telnet software to log this information before you give this command.
Table 6-4
describes the significant fields shown by the
show controllers cable-modem
command. For
more information, see the Broadcom documentation for the BCM3300 chip.
Table 6-4
show controllers cable-modem Field Descriptions
Field
Description
BCM3300 unit
Unit number of this BCM3300 chip.
idb
Interface description block number.
ds
Downstream channel.
regaddr
Indicates the start of the BCM3300 registers.
reset_mask
Indicates the bit to hit when resetting the chip.
station address
MAC address of this router’s cable interface.
default station address
Default MAC address assigned by the factory for this router.
PLD VERSION
PLD version of the BCM3300 chip.
MAC State
Current MAC state of the router.
Prev States
Number of states that have previously existed since initialization.
MAC mcfilter
MAC control filter for MAC messages.
data mcfilter
MAC control filter for data.
DS
Downstream Broadcom receiver chip number and ID.
US
Upstream Broadcom transmitter chip number and ID.
Tuner: status
Current status of the tuner.
Rx: tuner_freq
Downstream frequency (in Hz) that the router searched for and found.
symbol_rate
Downstream frequency in symbols per second.
local_freq
Frequency on which the transmitter and the tuner communicate.
snr_estimate
Estimate of signal-to-noise ratio (SNR) in dB multiplied by 1000.
ber_estimate
Estimate of bit error rate (always 0).
lock_threshold
Minimum signal-to-noise ratio (SNR) that the router will accept as a valid
lock.
qam_mode
The modulation scheme used in the downstream direction.
Tx: tx_freq
Upstream frequency sent to the router by the CMTS in the UCD message.
power_level
Transmit power level as set in the hardware, expressed as a hexadecimal
value. The units are unique to the hardware used. Use the
show controllers
cable-modem mac state
command to see the power level in dBmV.
symbol_rate
Upstream frequency in symbols per second.
TFTP server
IP address of the TFTP server at the CMTS.
TOD server
IP address of the time-of-day server at the CMTS.
Security server
IP address of the security server at the CMTS.