Motorola BSR 2000, Руководство по настройке и управлению

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BSR 2000 Configuration and Management Guide Release 1.0
6-208 MGBI 526360-001-00 Rev. B
Viewing the Timing Adjustments for CMs
Each CM manufacturer uses a different initial timing offset value. The BSR stores the
initial timing values based on the CM manufacturer. The true timing offset that each
CM uses is read by the CM using SNMP.
The timing offset stored in the CM is the collection of all the timing adjustments sent
to the CM. The BSR cannot determine the timing offset at which a particular CM
starts. The CM starts at an initial timing offset based on its internal delays. The values
stored and displayed by the BSR are the summary of the CM initial timing offset
adjustments.
The show cable modem timing-offset command allows the user to select which CMs
are displayed based on their timing offset value.
■
Use the show cable modem timing-offset below command in Privileged EXEC
mode to identify all CMs with a timing offset below the entered number:
MOT#
show cable modem timing-offset below {<
0-500000
>} [<
X/Y
>]
where:
0-500000
is the timing offset value that displays all CMs below this timing
offset value.
X
is 0.
Y
is the port number.
■
Use the show cable modem timing-offset above command in Privileged EXEC
mode to identify all CMs with a timing offset above the entered number:
MOT#
show cable modem timing-offset above {<
0-500000
>} [<
X/Y
>]
where:
MOD type mod Upstream modulation type
Preambl length Length of the preamble
Profile (1-16) Modulation profile group
Scrambl Scramble enabled indication
Scrambl seed Seed of the scrambler
Table 6-23 show cable modulation-profile Fields
Field Identification