Enabling Pre-Equalization; Forcing The Fragmentation Of Large Upstream Packets - Motorola BSR 2000 Configuration And Management Manual

BSR 2000 Configuration and Management Guide
-or-
Use the cable upstream physical-delay command in Interface Configuration mode to
set the fixed value for an upstream channel:
MOT (config-if)# cable upstream <NUM> physical-delay <10-1600>
where:

Enabling Pre-equalization

Use the cable upstream pre-equalization command to enable the pre-equalization
adjustment function on the upstream port, which includes sending pre-equalization
coefficients in a ranging response to a CM to compensate for impairment over the
transmission line in Interface Configuration mode:
Note: Not all CMs support the pre-equalization adjustment. If you enable the
pre-equalization adjustment for an upstream port and the CM does not
support this adjustment, the cable interface may not receive valid upstream
data from the CM.
MOT (config-if)# cable upstream <NUM> pre-equalization
where:
If you need to disable the pre-equalization adjustment, use the no cable upstream
pre-equalization command.

Forcing the Fragmentation of Large Upstream Packets

The cable upstream force-frag command is used as a traffic shaping tool. When a
CM sends a request to the cable interface for a large data grant that exceeds the
configured minislot threshold, the cable interface grants the CM the configured
minislot threshold, which forces the CM to make another data grant request for the
remaining data, thereby causing the data packets to be fragmented by the CM.
Use the cable upstream force-frag command to force CMs to fragment large
upstream packets in Interface Configuration mode:
6-80
200-1600 is the maximum upstream physical delay in microseconds. The default
value is 1600 microseconds.
NUM is the upstream port number.
10-1600 is the fixed upstream physical delay value in microseconds.
NUM is the upstream port number.
MGBI
Release 1.0
526360-001-00 Rev. B