Cisco Broadband Cable Command Reference Guide

Chapter 2 Cisco Cable Modem Termination System Commands
cable dci-upstream-disable
Syntax Description
OL-1581-05
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.
cable dci-upstream-disable mac-address [enable | disable]
no cable dci-upstream-disable 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
mac-address Specifies the MAC physical layer address for a particular CM.
enable 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.
disable Disables the sending of UP-DIS messages to a particular CM.
Release Description
12.1(4)CX This command was introduced for DOCSIS 1.1 operation.
12.2(4)BC1 Support for this command was added to the Release 12.2 BC train.
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#
Cisco Broadband Cable Command Reference Guide
2-33