Cisco UBR904 Troubleshooting Guide - Page 19

show controllers cable-modem, Table 2, Show Controllers Cable-Modem Field Descriptions, Field

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show controllers cable-modem ds_data_dma_ctrl=0x98, ds_mac_dma_ctrl=0xD8 ds_dma_data_index=0x0007, ds_dma_msg_index=0x0000 upstream dma: us_bd_base=0x001FB8, us_pd_base=0x002038 us_dma_ctrl=0x80, us_dma_tx_start=0x00 Global control and status: global_ctrl_status=0x00 interrupts: irq_pend=0x0008, irq_mask=0x00F7 Table 2 briefly describes some of the fields shown in the display. For more information, see the Broadcom documentation for the BCM3220 chip. Table 2 Show Controllers Cable-Modem Field Descriptions Field BCM3220 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 Description The unit number of this BCM3220 chip. Interface description block number. Downstream channel. Indicates the start of the BCM3220 registers. Indicates the bit to hit when resetting the chip. MAC address of this uBR904 cable modem interface. Default MAC address assigned by the factory for this uBR904 cable modem. PLD version of the BCM3220 chip. Current MAC state of the cable modem. 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 uBR904 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 X 1000. Estimate of bit error rate (always 0). Minimum signal-to-noise ratio (SNR) that the uBR904 will accept as a valid lock. The modulation scheme used in the downstream direction. Upstream frequency sent to the uBR904 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 0 mac state command to see the power level in dBmV. Upstream frequency in symbols per second. IP address of the TFTP server at the headend. IP address of the time-of-day server at the headend. IP address of the security server at the headend. Troubleshooting Tips for the Cisco uBR904 Cable Modem 19

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show controllers cable-modem
Troubleshooting Tips for the Cisco uBR904 Cable Modem
19
ds_data_dma_ctrl=0x98, ds_mac_dma_ctrl=0xD8
ds_dma_data_index=0x0007, ds_dma_msg_index=0x0000
upstream dma:
us_bd_base=0x001FB8, us_pd_base=0x002038
us_dma_ctrl=0x80, us_dma_tx_start=0x00
Global control and status:
global_ctrl_status=0x00
interrupts:
irq_pend=0x0008, irq_mask=0x00F7
Table 2 briefly describes some of the fields shown in the display. For more information, see the
Broadcom documentation for the BCM3220 chip.
Table 2
Show Controllers Cable-Modem Field Descriptions
Field
Description
BCM3220 unit
The unit number of this BCM3220 chip.
idb
Interface description block number.
ds
Downstream channel.
regaddr
Indicates the start of the BCM3220 registers.
reset_mask
Indicates the bit to hit when resetting the chip.
station address
MAC address of this uBR904 cable modem interface.
default station address
Default MAC address assigned by the factory for this uBR904 cable modem.
PLD VERSION
PLD version of the BCM3220 chip.
MAC state
Current MAC state of the cable modem.
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 uBR904 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 X 1000.
ber_estimate
Estimate of bit error rate (always 0).
lock_threshold
Minimum signal-to-noise ratio (SNR) that the uBR904 will accept as a valid lock.
qam_mode
The modulation scheme used in the downstream direction.
Tx: tx_freq
Upstream frequency sent to the uBR904 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 0 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 headend.
TOD server
IP address of the time-of-day server at the headend.
Security server
IP address of the security server at the headend.