Installation guide

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Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide
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Chapter 3 Configuring the Cisco Cable Interface
Setting Quality of Service (QoS) for Higher Priority Traffic
Verifying a QoS Profile Assignment
Step 1 Load the Cisco uBR7100 series CMTS and wait for the CMs to come online as indicated by the
show cable modem command.
Notice that the CMs are getting their provisioned class of service as indicated by the
show cable modem and show cable qos profile commands.
Step 2 Configure any QoS profile at the CMTS with a specific index number (for example index 1) by using the
SNMP/CLI.
Step 3 Enter the global command cable qos permission enforce 1.
Step 4 Enter the clear cable modem all reset global configuration command to force the CMs to reregister with
the CMTS.
Notice that the CMs are assigned temporarily the CMTS-defined PRE_REGISTRATION QoS profile
with index 2 until the CMs register with the CMTS.
Step 5 Use the debug cable reg command to see that the provisioned QoS parameters of the CMs are
overwritten at the CMTS during registration. Notice that at the end of the registration, the CM gets the
user-enforced QoS profile as indicated by the show cable modem and show cable qos profile
commands.
Setting Quality of Service (QoS) for Higher Priority Traffic
This feature describes the software enhancements and procedures that support QoS for higher priority
traffic. These enhancements include improved support for:
• Delay/jitter requirements of higher priority traffic
• Increase in per-modem data throughput
• New MAC scheduler
• MAC messaging enhancements to better support real time responses to high priority service requests
Refer to the following procedures for setting QoS for higher priority traffic:
• “Configuring a QoS Profile for Higher Priority Traffic” section on page 3-46
• “Monitoring and Maintaining QoS for Higher Priority Traffic” section on page 3-47
Configuring a QoS Profile for Higher Priority Traffic
Perform these steps to configure a QoS modulation profile:
Command Purpose
Step 1
Router(config)# cable qos-profile n name
Assigns a name to the QoS profile.
Step 2
Router(config)# cable qos-profile n priority
Sets the upstream traffic priority.
Step 3
Router(config)# qos-profile n max-upstream
Sets the maximum upstream traffic rate.
Step 4
Router(config)# qos-profile n guaranteed-upstream
Sets the guaranteed upstream traffic rate.