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show controllers cable-modem
The show controllers cable-modem 0 all command displays extensive information about the current
Note
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
more information, see the Broadcom documentation for the BCM3300 chip.
Table 6-4
Field
BCM3300 unit
idb
ds
regaddr
reset_mask
station address
default station address
PLD VERSION
MAC State
Prev States
MAC mcfilter
data mcfilter
DS
US
Tuner: status
Rx: tuner_freq
symbol_rate
local_freq
snr_estimate
ber_estimate
lock_threshold
qam_mode
Tx: tx_freq
power_level
symbol_rate
TFTP server
TOD server
Security server
Cisco Broadband Cable Command Reference Guide
6-72
describes the significant fields shown by the show controllers cable-modem command. For
show controllers cable-modem Field Descriptions
Description
Unit number of this BCM3300 chip.
Interface description block number.
Downstream channel.
Indicates the start of the BCM3300 registers.
Indicates the bit to hit when resetting the chip.
MAC address of this router's cable interface.
Default MAC address assigned by the factory for this router.
PLD version of the BCM3300 chip.
Current MAC state of the router.
Number of states that have previously existed since initialization.
MAC control filter for MAC messages.
MAC control filter for data.
Downstream Broadcom receiver chip number and ID.
Upstream Broadcom transmitter chip number and ID.
Current status of the tuner.
Downstream frequency (in Hz) that the router searched for and found.
Downstream frequency in symbols per second.
Frequency on which the transmitter and the tuner communicate.
Estimate of signal-to-noise ratio (SNR) in dB multiplied by 1000.
Estimate of bit error rate (always 0).
Minimum signal-to-noise ratio (SNR) that the router will accept as a valid
lock.
The modulation scheme used in the downstream direction.
Upstream frequency sent to the router by the CMTS in the UCD message.
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.
Upstream frequency in symbols per second.
IP address of the TFTP server at the CMTS.
IP address of the time-of-day server at the CMTS.
IP address of the security server at the CMTS.
Chapter 6
Cable CPE Commands
OL-1581-07
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