Motorola BSR 2000, Configuration And Management Manual

Page: 330 / 650

BSR 2000 Configuration and Management Guide Release 1.0
6-144 MGBI 526360-001-00 Rev. B
The following spectrum hopping rules apply:
■
No actions are taken if spectrum hopping rules are not defined. The rules include
the preferred frequency, modulation profile, channel-width parameters, and
power adjustment.
■
Multiple hopping rules with same type of action are allowed.
■
Each hopping rule can be assigned with different priorities.
■
Hopping rules are applied by priority and hopping rules with same priority are
applied in the order in which they are entered.
■
If each individual rule fails to apply, the spectrum manager attempts to apply
different combinations of the individual rules.
Follow these steps to configure spectrum hopping rules:
1. The default hop period is 300 seconds. Use the hop period command in Cable
Spectrum Group mode to prevent excessive frequency hops on an upstream port:
MOT(config-spcgrp:
<
WORD
>
)#
hop period <
30-3600
>
where:
WORD
is the spectrum group name.
30-3600
is the rate at which the frequency hop takes place, expressed in
seconds.
2. Use the hop action frequency command in Cable Spectrum Group mode to
determine the frequency hop for discrete center frequencies during the frequency
hop action:
MOT(config-spcgrp:
<
WORD
>
)#
hop action frequency
<
5000000-42000000
> [ priority <
1-25
5>]
where:
WORD
is the spectrum group name.
5000000-42000000
is the upstream frequency from 5000000 to 42000000 Hz
1-255
is the priority number of the upstream frequency hop action. When no
priority is assigned, the default priority is 128. The lower number takes
precedence.
For example, the following syntax determines that 28 MHz replaces the existing
upstream frequency when a hop action is triggered and defines the priority level
of the hop: