Specifications

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Cisco Cable Modem Termination System Feature Guide
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Chapter 3 Spectrum Management for the Cisco Cable Modem Termination System
Configuration Tasks
Note You must repeat the command described above for each frequency or power level that you want to add
to a spectrum group’s list of valid values.
Adding a Spectrum Band
To configure a spectrum band of frequencies in addition to frequency entries to support automatic
frequency tables, use one of the following commands in global configuration mode:
Setting Frequency Hop Threshold or Minimum Hop Period
To adjust the frequency hop threshold percentage or the minimum period between frequency hops, use
one of the following commands in global configuration mode:
Command Purpose
CMTS01(config)# cable spectrum-group group-number band
up-freq-hz up-freq2-hz [ power-level-dBmV ]
or
CMTS01(config)# cable spectrum-group group-number [time
day hh:mm:ss ] [delete] band up-freq-hz up-freq2-hz
[ power-level-dBmV ]
Adds a band of frequencies to the spectrum group. The
band is a range of center frequencies that the CMTS
can scan in order to find an acceptable channel to
which the spectrum group may hop.
Group-number specifies the spectrum group you are
adding or specifies the spectrum group you want
removed from your router configuration. Valid range is
from 1 to 32.
An upstream frequency has an associated upstream
input power level in dBmV. The power level value
should be changed only if you want to change the
power level as part of spectrum management. The
standard power level is 0 dBmV.
Adds a band at a particular time of day and day of the
week. The delete option deletes a band at a particular
time and day.
Note If the time option is configured, the frequency
setting or band is either made available or
deleted at the specified time.