System information

BSR 64000 Configuration and Management Guide
6-34
where:
NUM is the upstream port number.
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, as shown below:
MOT(config-if)#cable upstream <NUM> force-frag <0-255>
where:
NUM is the upstream port number.
0-255 is the threshold number of minislots without fragmentation for large data
grants.
Disabling an Upstream Port
Follow these steps to administratively shut down an upstream port:
1. To determine if an upstream port is activated or deactivated, use the show
interface cable command in Privileged EXEC
mode, as shown below:
MOT#show interfaces cable 0
2. To disable an upstream port, use the cable upstream shutdown command in
Interface Configuration mode, as shown below:
MOT(config-if)#cable upstream <NUM> shutdown
where:
NUM is the upstream port number.