Cisco Broadband Cable Command Reference Guide

option
option
Syntax Description
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Cisco Broadband Cable Command Reference Guide
Chapter 2 Cisco Cable Modem Termination System Commands
To create a DOCSIS configuration file that specifies vendor-specific information fields, or other options
that are not available through the other cable config-file commands, use the option command in cable
config-file configuration mode. To remove the entry for this option, use the no form of this command.
option n [instance inst-num] {ascii string | hex hexstring | ip ip-address}
no option n
Defaults No default behaviors or values
Command Modes Cable config-file configuration
Command History
n Specifies the configuration file option code. Valid range is 5 to 254.
Note Certain values between 5 and 254 are not allowed. See Table 2-11 for
more information.
instance inst-num (Optional) Specifies the instance of this option, so that you can give the same
option multiple times. Valid range is 0 to 255.
ascii string Specifies that the data is a network verification tool (NVT) ASCII string. If
the string contains white space, you must surround it with quotation marks.
hex hexstring Specifies the data as a raw hexadecimal string. Each byte in the hexadecimal
string is two hexadecimal digits—each byte can be separated by a period,
colon, or white space. A maximum of 254 bytes can be specified.
Note The hex option must be used to specify the data in the DOCSIS
Type/Length/Value (TLV) format when using the vendor-specific
option (option 43).
ip ip-address Specifies an IP address.
Release Modification
12.1(2)EC1 This command was introduced.
12.2(4)BC1 Support was added to the Release 12.2 BC train.
Usage Guidelines The DOCSIS specification provides for a great many options and parameters in the DOCSIS
configuration files. In particular, it allows unspecified vendor-specific options that can vary from vendor
to vendor and from model to model. To create a DOCSIS configuration file that references these options,
use the option command.
The option command allows you to specify configuration file parameters that are not defined by the
other cable config-file options. These options are defined in the DOCSIS Radio Frequency (RF)
Interface Specification. However, certain options are not allowed because they are either reserved for
DOCSIS use or because they are specified using other cable config-file commands.
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