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Chapter 2
Cisco CMTS Configuration Commands
cable dci-upstream-disable
To configure a cable interface so that it transmits a DOCSIS 1.1 Upstream Transmitter Disable (UP-DIS)
message to a particular CM, use the cable dci-upstream-disable command in cable interface
configuration mode. To remove that configuration and return to the default configuration, use the no
form of this command.
Syntax Description
mac-address
enable
disable
Defaults
The Cisco CMTS does not transmit UP-DIS messages to any CMs.
Command Modes
Interface configuration (cable interface only)
Command History
Release
12.1(4)CX
12.2(4)BC1
Usage Guidelines
The DOCSIS 1.1 specification (revision SP-RFIv1.1-I05-000714 and above) allows a CMTS to transmit
an Upstream Transmitter Disable (UP-DIS) message to a CM. If the CM supports the UP-DIS message,
it responds by immediately disabling its upstream transmitter circuitry. The CM must be power-cycled
before it can begin transmitting on the upstream again.
Examples
The following example shows the cable dci-upstream-disable command being used to enable the UP-
DIS message for the CM with the MAC address of 0123.4567.89ab.
Router# configure terminal
Router(config)# interface c6/0
Router(config-if)# cable dci-upstream-disable 0123.4567.89ab enable
Router(config-if)# exit
Router(config)# exit
Router#
OL-1581-08
cable dci-upstream-disable mac-address [enable | disable]
no cable dci-upstream-disable mac-address [enable | disable]
Description
This command was introduced for DOCSIS 1.1 operation.
Support for this command was added to the Release 12.2 BC train.
Specifies the MAC physical layer address for a particular CM.
Enables the UP-DIS message for the particular CM, so that when the
CM sends a DCI-REQ message, the CMTS responds by sending an
UP-DIS response.
Disables the sending of UP-DIS messages to a particular CM.
Cisco Broadband Cable Command Reference Guide
cable dci-upstream-disable
2-35
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