Installation guide

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Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
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Chapter 5 Troubleshooting the System
Using Cable Interface debug Commands
debug cable modems Command
This command activates debugging of cable modems. When this command is activated, messages from
cable modems on the HFC network are displayed on the Cisco uBR7100 series router console. The
format for the command follows:
CMTS01# debug cable modems
To deactivate debugging of cable MAC messages, use the following command:
CMTS01# no debug cable modems
debug cable phy Command (Messages)
This command activates debugging of messages generated in the cable PHY—the physical layer where
upstream and downstream activity between the Cisco uBR7100 series router and the HFC network is
controlled. When this command is activated, messages generated in the cable PHY are displayed on the
Cisco uBR7100 series router console. The format for the command follows:
CMTS01# debug cable phy
To deactivate debugging of the cable PHY, use the following command:
CMTS01# no debug cable phy
debug cable qos Command
This command activates debugging of QoS. When this command is activated, messages related to QoS
parameters are displayed on the Cisco uBR7100 series router console. The format for the command
follows:
CMTS01# debug cable qos
To deactivate debugging of QoS, use the following command:
CMTS01# no debug cable qos
debug cable range Command (Ranging Messages)
This command activates debugging of ranging messages from cable interfaces on the HFC network.
When this command is activated, ranging messages generated when cable interfaces request or change
their upstream frequencies are displayed on the Cisco uBR7100 series router console. The format for the
command follows:
CMTS01# debug cable range
To deactivate debugging of cable interface ranging, use the following command:
CMTS01# no debug cable range