Cisco MC16S Instrukcja Użytkownika Pobierz pdf (Strona 19)

Configuring Spectrum Management on an Upstream Cable Interface

Cisco uBR7200 Series MC16S Cable Modem Card Spectrum Management 19

cable spectrum-group

Frequency agility is conﬁgured and activated using spectrum groups that are controlled by the

spectrum manager. You can create from 1 to 32 spectrum groups for each cable modem card

upstream port.

To create spectrum groups, specify a list of upstream frequencies and nominal power levels that each

spectrum group can use when an upstream frequency change is necessary. Each spectrum group

should have its own list of upstream frequencies. At 1.6 MHz, the valid range is –10 dBmV to

25 dBmV. The power level value should only be changed if you want to change only the power level

as part of spectrum management. The standard power level is 0 dBmV.

Note You must repeat this command for each frequency or power level that you want to add to a

spectrum group’s list of valid values.

After you have created one or more spectrum groups for your cable network, you can add

characteristics to them, providing you with more deﬁnitive control over frequency usage and

frequency hopping.

Note The cable interface will not operate until you either create and conﬁgure a spectrum group or

set a ﬁxed upstream frequency. See the “cable upstream hopping blind” section on page 26.

cable spectrum-group group number parameter value

no cable spectrum-group group number

Syntax Description

group number Speciﬁes the spectrum group for which you are specifying a parameter value or speciﬁes

the number of the spectrum group you wish to remove from your router conﬁguration.

Valid range is from 1 to 32.

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Cisco MC16S Instrukcja Użytkownika Strona 19