Cisco uBR924 Dokumentacja Pobierz pdf (Strona 30)

cable-modem downstream saved channel

Cisco IOS Release 12.0(5)T

cable-modem downstream saved channel

To modify the saved downstream channel setting and upstream power value on a cable access router

interface, enter the cable-modem downstream saved channel command from interface

conﬁguration mode. Use the no form of this command to remove the saved settings, which will be

resaved at the next initialization cycle.

cable-modem downstream saved channel ds-frequency us-power

no cable-modem downstream saved channel ds-frequency us-power

Syntax Description

Defaults

Enabled

Command Modes

Interface conﬁguration

Command History

Usage Guidelines

This command is auto-generated by theoperation of the cable MAClayer process. The DOCSIS RFI

speciﬁcation requires that cable modems remember the downstream frequency and upstream power

of the last successfully ranged session. These parameters are called up as the ﬁrst downstream

frequency and upstream power to use the next time the cable modem is booted. This operation

dramatically speeds up the channel search.

Use the no cable-modem downstream saved channel ds-frequency us-power command to remove

the saved frequency and power setting from the running conﬁguration, which will be resaved at the

next initialization cycle.

Cisco recommends that this command NOT be used by end users of the Cisco uBR924 cable access

router.

Examples

The following example shows how to remove the downstream frequency of 91000000 Hz and the

upstream power level of 33 dBmV from the running conﬁguration of a cable-modem interface,

starting from global conﬁguration mode.

uBR924(config)# interface cable-modem 0

uBR924(config-if)# no cable-modem downstream saved channel 91000000 33

uBR924(config-if)#

ds-frequency Downstream channel frequency in Hz, which can be from 91000000 to 860000000.

us-power Upstream power level in decibels per millivolt (dBmV), which can be from 8 to 61.

Release Modiﬁcation

11.3 NA This command was ﬁrst introduced.

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