cable service-class docsis1.1 registered with cable qos enforce

Unanswered Question
Jul 19th, 2010

Dear all,

recently i'm successfully managed to bring cable modem to docsis 1.1 qos, via cm config file.

and then already config cable service-class to match with cm config file.

the problem is cable modem still able online without matchin the cable service class configuration.

And i was unable to config cable qos enforce (cable service-class registered)... cause the cable modem registered with random generated service-class.

How can i be able to use the cable qos enforce in cable service-class docsis 1.1 environment ??

the documentation is in :


Budi L

I have this problem too.
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Chieh Yu Fri, 08/27/2010 - 15:01

Hi Budi,

In my experience the Service Class name TLV in the US Flow must match exactly with the "cable service-class xxx name yyy" in the CMTS configuration otherwise you will get a modem in reject(c) state.

Can you double check that the cable modem is indeed provisioned in D11 mode? The command for that is "show cable modem mac".

Just a side note - please make sure your D11 config file for the US and DS service flows has the Service class name, the QosParamSet, and the service flow ID.

Here's an example of a working D11 config file snippet and my CMTS:

Cfg file snippet:

        UsServiceFlowRef 10;
        QosParamSetType 7;
        ServiceClassName "UP-A";

        DsServiceFlowRef 20;
        QosParamSetType 7;
        ServiceClassName "DOWN-A";


cable service class 100 name UP-A
cable service class 100 upstream
cable service class 100 sched-type 2
cable service class 100 max-rate 128000
cable service class 100 max-burst 1522
cable service class 100 priority 3
cable service class 200 name DOWN-A
cable service class 200 downstream
cable service class 200 max-rate 128000
cable service class 200 max-burst 1522
cable service class 200 priority 3




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