
2-33
Cisco Broadband Cable Command Reference Guide
OL-1581-08
Chapter 2 Cisco CMTS Configuration Commands
cable dci-response
cable dci-response
To configure how a cable interface responds to DCI-REQ messages for CMs on that interface, use the
cable dci-response
command in cable interface configuration mode.
cable dci-response
[
success
|
ignore
|
reject permanent
|
reject temporary
]
Syntax Description
Defaults
The Cisco CMTS responds to DCI-REQ messages from all CMs by sending a DCI-RSP response with
the confirmation code of Success (0).
Command Modes
Interface configuration (cable interface only)
Command History
Usage Guidelines
The Device Class Identification (DCI) messages are part of the Media Access Control Specification
section of the DOCSIS 1.1 specification (revision SP-RFIv1.1-I05-000714 and above). A CM can
optionally use the DCI-REQ message to inform the CMTS of certain capabilities, such as whether it is
a CPE-controlled cable modem (CCCM).
The CMTS then responds with one of the following confirmation codes:
•
Success—Allows the CM to continue with the registration process.
•
Reject Permanent—Instructs the CM to abort its registration process on this downstream channel.
The CM must try all other available downstream channels before attempting to register on this
downstream channel again.
success
Configures the interface so that the Cisco CMTS responds to DCI-
REQ messages from CMs on the interface by sending a DCI-RSP
response with the confirmation code of Success (0).
ignore
Configures the interface so that the Cisco CMTS ignores DCI-REQ
messages from CMs on the interface. It does not send any DCI-RSP
responses.
reject permanent
Configures the interface so that the Cisco CMTS responds to DCI-
REQ messages from CMs on the interface by sending a DCI-RSP
response with the confirmation code of Reject Permanent (4).
reject temporary
Configures the interface so that the Cisco CMTS ignores the first four
DCI-REQ messages from a CM on the interface, but on the fifth DCI-
REQ message, the CMTS responds with a DCI-RSP response with
the confirmation code of Reject Temporary (3). The CMTS then
continues to ignore the next seven DCI-REQ messages and then
restarts this process when it receives the twelfth DCI-REQ message.
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.