[j-nsp] CoS Configuration Assistance

[IPGN J-NSP]

I am running into garbled voice that would seem to be caused by delayed or 
out of sequence packets.

I apologize for not including the full configuration but the schedulers are 
defined.

forwarding-classes {
    queue 0 best-effort;
    queue 1 expedited-forwarding;
    queue 2 assured-forwarding;
    queue 3 network-control;
}

schedulers {
    voice-t1-ef {
        transmit-rate percent 30;
        priority strict-high;
    }
    voice-t1-be {
        transmit-rate percent 55;
        priority low;
    }
    voice-ef {
        transmit-rate percent 30;
        priority strict-high;
    }
    voice-af {
        transmit-rate percent 5;
        priority low;
    }
    voice-nc {
        transmit-rate percent 5;
        priority high;
    }
    voice-be {
        transmit-rate percent 60;
        priority low;
    }
    voice-t1-af {
        transmit-rate percent 10;
        priority low;
    }
    voice-t1-nc {
        transmit-rate percent 5;
        priority high;
    }
}

Thanks


>
> -----Original Message-----
> From: Harry Reynolds [mailto:harry at juniper.net]
> Sent: Friday, January 20, 2006 3:05 PM
> To: IPGN J-NSP; juniper-nsp at puck.nether.net
> Subject: RE: [j-nsp] CoS Configuration Assistance
>
> Hello,
>
> I do not see the definition of any schedulers in your config. If not
> defined the default bandwidth is 95/5 for queue 0 and 3 respectively.
>
> Here I a sample scheduler definition stanza:
>
> [edit class-of-service]
> lab at San_Jose# show schedulers
> be-scheduler {
>    transmit-rate 1m exact;
>    priority low;
>    drop-profile-map loss-priority low protocol tcp drop-profile
> low-red;
>    drop-profile-map loss-priority high protocol tcp drop-profile
> high-red;
> }
> ef-scheduler {
>    transmit-rate 20m;
>    buffer-size temporal 200000;
>    priority high;
> }
> nc-scheduler {
>    transmit-rate percent 5;
>    priority low;
> }
>
> HTHs
>
>
>> -----Original Message-----
>> From: juniper-nsp-bounces at puck.nether.net
>> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of IPGN J-NSP
>> Sent: Friday, January 20, 2006 12:57 PM
>> To: juniper-nsp at puck.nether.net
>> Subject: [j-nsp] CoS Configuration Assistance
>>
>> I am attempting to prioritize voip traffic to/from T1
>> customers for our specific application.  I would like to know
>> if anyone sees any problems with the configuration below
>> because I am running into a few quality issues.
>> Thank you in advance for any advice you can provide.
>>
>> Basically, I have firewall filters (mf classifier) that match
>> input traffic patterns from T1 customers as well as input
>> from the FastEthernet port that connects the softswitch.
>> These filters place the traffic into the appropriate queue
>> which is basically expedited-forwarding for voip and
>> best-effort for everything else.  Then I have a
>> rewrite-marker on the interfaces that set specific dscp
>> values per each queue and dscp classifiers that assign the
>> appropriately tagged dscp packets to their respective queue.
>>
>>
>>
>> > show configuration class-of-service
>> classifiers {
>>     dscp ipgn-dscp {
>>         forwarding-class expedited-forwarding {
>>             loss-priority low code-points ef;
>>             loss-priority high code-points cs4;
>>         }
>>         forwarding-class best-effort {
>>             loss-priority high code-points be;
>>             loss-priority low code-points cs1;
>>         }
>>         forwarding-class assured-forwarding {
>>             loss-priority high code-points af11;
>>             loss-priority low code-points af12;
>>         }
>>         forwarding-class network-control {
>>             loss-priority high code-points nc1;
>>             loss-priority low code-points nc2;
>>         }
>>     }
>> }
>>
>> rewrite-rules {
>>     dscp ipgn-rewrite {
>>         forwarding-class expedited-forwarding {
>>             loss-priority low code-point ef;
>>             loss-priority high code-point cs4;
>>         }
>>         forwarding-class best-effort {
>>             loss-priority high code-point be;
>>             loss-priority low code-point cs1;
>>         }
>>         forwarding-class network-control {
>>             loss-priority high code-point nc1;
>>             loss-priority low code-point nc2;
>>         }
>>         forwarding-class assured-forwarding {
>>             loss-priority low code-point af12;
>>             loss-priority high code-point af11;
>>         }
>>     }
>> }
>>
>> scheduler-maps {
>>     map-ethernet {
>>         forwarding-class best-effort scheduler best-effort;
>>         forwarding-class expedited-forwarding scheduler
>> expedited-forwarding;
>>         forwarding-class network-control scheduler network-control;
>>     }
>>     voice-t1-map {
>>         forwarding-class best-effort scheduler voice-t1-be;
>>         forwarding-class expedited-forwarding scheduler voice-t1-ef;
>>         forwarding-class network-control scheduler voice-t1-nc;
>>         forwarding-class assured-forwarding scheduler voice-t1-af;
>>     }
>> }
>> interfaces {
>>     t1-0/0/* {
>>         scheduler-map voice-t1-map;
>>         unit 0 {
>>             classifiers {
>>                 dscp ipgn-dscp;
>>             }
>>             rewrite-rules {
>>                 dscp ipgn-rewrite;
>>             }
>>         }
>>     }
>>     fe-1/3/0 {
>>         scheduler-map ethernet-map;
>>         unit 202 {
>>             classifiers {
>>                 dscp ipgn-dscp;
>>             }
>>             rewrite-rules {
>>                 dscp ipgn-rewrite;
>>             }
>>         }
>>     }
>> }
>>
>>
>> > show configuration interfaces t1-0/0/0:15
>> encapsulation ppp;
>> unit 0 {
>>     family inet {
>>         filter {
>>             input ipgn-cust-t1-input;
>>         }
>>         address 1.1.1.1/30;
>>     }
>> }
>>
>> > show configuration interfaces fe-1/3/0.202
>> vlan-id 202;
>> family inet {
>>     filter {
>>         input vipgn-mfc-in;
>>     }
>>     address 2.2.2.2/27;
>> }
>>
>>
>> /J
>>
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>>
>