Cisco cBR 8 Configuration Guide

cable service class 3 max-rate 30000000
cable service class 3 max-concat-burst 8000
For the cable modem to achieve maximum US thoroughput, provide a large value to the max-concat-burst
keyword in the cable service class command.
The following example shows sample cable service class commands on the Cisco CMTS router that configure
new QoS parameters for identified subscribers to limit bandwidth using the max-rate parameter. These service
classes correspond to the enforced service classes configured by the service-class enforced command for the
QoS enforce rules shown later in this example:
cable service class 102 name BEUS-1
cable service class 102 upstream
cable service class 102 max-rate 48888
cable service class 102 max-burst 3044
cable service class 102 max-concat-burst 8000
cable service class 103 name BEDS-1
cable service class 103 downstream
cable service class 103 max-rate 988888
cable service class 103 max-concat-burst 8000
The following example shows configuration of the corresponding enforce-rules for upstream and downstream
monitoring, which identifies the registered and enforced service classes:
cable qos enforce-rule US-1
monitoring-basics legacy docsis11
penalty-period 10
service-class registered BE-STM-US-1
service-class enforced BEUS-1
duration 10 avg-rate 1 sample-interval 10 up enf
enabled
!
cable qos enforce-rule DS-1
monitoring-basics legacy docsis11
penalty-period 10
service-class registered BE-STM-DS-1
service-class enforced BEDS-1
duration 10 avg-rate 1 sample-interval 10 do enf
enabled
Example: Downstream Configuration
The following example shows a typical enforce-rule configuration for traffic in the downstream direction:
!
cable qos enforce-rule downstream-rule
monitoring-basics legacy docsis11
penalty-period 10
service-class registered class5
service-class enforced class99
duration 30 avg-rate 1 sample-interval 10 downstream enforce
enabled
Example: Upstream Configuration
The following example shows a typical enforce-rule configuration for traffic in the upstream direction:
!
cable qos enforce-rule upstream-rule
monitoring-basics legacy docsis11
penalty-period 10
service-class registered class5
service-class enforced class99
Cisco cBR Series Converged Broadband Routers Quality of Services Configuration Guide for Cisco IOS XE
Fuji 16.7.x
140
Subscriber Traffic Management
Example: Downstream Configuration

Cisco cBR 8 Specifications

General

Brand	Cisco
Model	cBR 8
Category	Network Router
Language	English