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Validation Tips
To verify the tek life-time or grace-time values that have been set, enter the show cable privacy tek
command:
Troubleshooting Tips
If you are having trouble, make sure you have entered a valid value for grace time or life time.
Activate Baseline Privacy
After the kek and tek values have been set, you can activate encryption on the HFC network.
To activate baseline data privacy on the HFC network, use the following commands in global
configuration mode:
Step
1
2
Validation Tips
To verify if baseline privacy is activated, enter the cable privacy enable or cable privacy
mandatory command. By default, cable privacy is enabled and can only be disabled with the no
cable privacy command.
Troubleshooting Tips
If you are having trouble, make sure you have entered a valid value for grace time or life time for
kek and tek privacy.
Configure and Activate Frequency Agility
Frequency agility is a way to improve performance on upstream signal traffic and to compensate for
noise and interference. The spectrum manager monitors the upstream frequencies; if too much noise
or interference is detected in an upstream channel, the spectrum manager reassigns the upstream
channel to a different upstream frequency.
Frequency agility is configured and activated using spectrum groups. A spectrum group is a table of
frequencies that can be used by upstream ports to implement a frequency-hopping policy. There are
two types of policies, blind and scheduled, with two corresponding types of spectrum groups.
•
•
router# show cable privacy tek
Configured TEK life-time value = 56000
Command
cable privacy enable
cable privacy mandatory
Blind—The spectrum manager automatically assigns a new upstream channel frequency when
station maintenance (keep-alive) messages fail for approximately 2.5 minutes. This represents a
complete impairment of the upstream due to noise, plant, or equipment failure.
Scheduled—The spectrum manager automatically assigns a new upstream frequency at set times
during the day.
Purpose
Activate cable privacy. This is the default.
Activate cable privacy and do not allow access for any
unencrypted cable modem connections.
Configuring Cisco uBR7246 Universal Broadband Router Features VC-151
Activate Baseline Privacy