need difference between service flow and service class

Hi!

A service class is how you specify what packets that should be treated by a service flow. Call the class a filter.

UsPacketClass
{
ClassifierRef 2;
ServiceFlowRef 3; <----- We're sending this type of traffic to Service Flow 3 (see below)
ActivationState 1;
IpPacketClassifier
{
DstPortStart 5060; <--------- Selecting packets with destination port 5060 (SIP signaling)
DstPortEnd 5060;
}
}

UsServiceFlow
{
UsServiceFlowRef 2; <------- This SF has no classifier, so all traffic not selected by another classifier will be served by this class
QosParamSetType 7; <--------- Has to be 7 (7 is the only valid value!)
MaxRateSustained 10485760;
MaxTrafficBurst 28000;
MaxConcatenatedBurst 28000;
SchedulingType 2;
TrafficPriority 2;
}
UsServiceFlow
{
UsServiceFlowRef 3; <--------- Here is where the SIP signaling traffic goes
QosParamSetType 7;
TrafficPriority 4;
SchedulingType 2;
}
DsServiceFlow
{
DsServiceFlowRef 1;
QosParamSetType 7;
MaxRateSustained 52428800;
MaxTrafficBurst 28000;
TrafficPriority 2;
}

DCS, Downstream Channel Set, is a list of downstream (DS) channels that a DOCSIS 3.0 modem can listen to. Each downstream periodically sends this list to all modems so they can bond with multiple DS channels if allowed, configured and available. It is similar to UCD, Upstream Channel Descriptor, that is instead a list of available upstream channels.

SSC - no idea!

A good way to learn more is to look through this forum to see what people are asking questions about.

/Fredrik