Cisco Broadband Cable Command Reference Guide

show controllers cable
2-402
Tx Backoff End 16, Modulation Profile Group 1
part_id=0x3137, rev_id=0x01, rev2_id=0xFF
nb_agc_thr=0x0000, nb_agc_nom=0x0000
Range Load Reg Size=0x58
Request Load Reg Size=0x0E
Minislot Size in number of Timebase Ticks is = 8
Minislot Size in Symbols =8
Bandwidth Requests = 0x0
Piggyback Requests = 0x0
Invalid BW Requests= 0x0
Minislots Requested= 0x0
Minislots Granted = 0x0
Minislot Size in Bytes = 2
UCD Count = 0
DES Ctrl Reg#0 = C00C0C43, Reg#1 = 0
Cisco Broadband Cable Command Reference Guide
Chapter 2 Cisco Cable Modem Termination System Commands
Table 2-28 describes the fields shown in the show controllers cable upstream display.
Table 2-28 show controllers cable upstream Command Field Descriptions
Field Description
Cable Slot number/port number indicating the location of the Cisco cable
interface line card.
Upstream is up/administratively
down
Indicates the administrative state of the upstream (whether it is
shutdown or not).
Frequency Transmission frequency of the RF upstream channel.
Note Cisco cable interface line cards always program the
upstream’s center frequency in 16 KHz increments, and
this is the frequency displayed by the lines added to the
router’s configuration and by the show controllers cable
upstream command. For example, if you use the cable
upstream frequency command to specify a center
frequency of 27 MHz (cable upstream x frequency
27000000), the actual center frequency will be 27.008
MHz, which is the next highest 16 KHz boundary.
Channel Width Indicates the width of the RF upstream channel.
QPSK Symbol Rate Indicates the modulation technique for upstream transmission.
Spectrum Group 4 Indicates the spectrum group associated with this slot and port.
SNR Indicates an estimate for the overall signal-to-noise ratio (SNR) for
the upstream.
Note In Cisco IOS Release 12.1(10)EC1 and Cisco IOS Release
12.2(4)BC1b, the algorithm for calculating the SNR
estimate was refined for a more accurate value. Depending
on the plant characteristics, the new SNR estimate could be
up to 6 dB lower than the values shown in earlier software
releases. This value is only an estimate—for the most
accurate value, use a spectrum analyzer or use the show
controllers cable upstream spectrum command with the
Cisco uBR-MC16S cable interface line card.
Nominal Input Power level Indicates the desired power level coming into the receiver.
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