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Cisco Broadband Cable Command Reference Guide
OL-1581-08
Chapter 2 Cisco CMTS Configuration Commands
cable privacy tek
cable privacy tek
To set traffic encryption keys (TEKs) grace-time and life-time values for baseline privacy on an HFC
network, use the
cable privacy tek
command in cable interface configuration mode. To restore the
default value, use the
no
form of this command.
cable privacy tek
{
grace-time
[
seconds
] |
life-time
[
seconds
]}
no cable privacy tek
{
grace-time
|
life-time
}
Note
This command is applicable only on images that support BPI or BPI+ encryption.
Syntax Description
Defaults
The
grace-time
option is set to 600 seconds (10 minutes), and the
life-time
option to 43200 seconds
(12 hours).
Command Modes
Interface configuration (cable interface only)
Command History
Usage Guidelines
Baseline privacy on an HFC network is configured with key encryption keys (KEKs) and traffic
encryption keys (TEKs). The encryption is based on 40-bit or 56-bit data encryption standard (DES)
encryption algorithms.
The TEK is assigned to a CM when its KEK has been established. The TEK is used to encrypt data traffic
between the CM and the Cisco CMTS. TEKs can be set to expire based on a grace-time or a life-time
value.
The
grace-time
keyword is used to assign a temporary key to a CM to access the network. The
life-time
keyword is used to assign a more permanent key to a CM.
A CM that has a grace-time or life-time key assigned by the Cisco CMTS requests a new key before the
current one expires.
grace-time
seconds
(Optional) Length of traffic encryption grace-time in seconds. Valid range
is 60 to 1800 seconds. Default is 600 seconds (10 minutes).
life-time
seconds
(Optional) Length of the traffic encryption life-time in seconds. Valid
range is 180 to 604,8000. Default is 43,200 seconds (12 hours).
Release
Modification
11.3 XA
This command was introduced.
12.1(4)CX,
12.2(1)XF1,
12.2(4)BC1
The valid range for both options was changed to support DOCSIS 1.1 and
BPI+ encryption.
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