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Feature Descriptions MDM6000 Satellite Modem
14.11.2 BBF Encapsulation
This encapsulator inserts IP packets directly into BBF's.
The following picture shows the complete traffic flow through the encapsulation block in case of BBF
Encapsulation.
As is visualized in the figure, the incoming IP traffic is first classified by the classification rules. Once
the rules are applied traffic shaping is performed.
Traffic shaping is a mechanism to perform congestion control. Configure the shaping nodes in such
a way that the traffic capacity and the quality of service is respected according to the needs or
contracts of the customer. Shaped traffic is still in IP format and not ready yet to be modulated. The
channel and encapsulator configuration parameters are used to create baseband frames.
This is done by configuring the BBF header parameters.
By configuring the channels a logical pipe is defined that carries traffic coming from the shaping
nodes. The shaping nodes are linked to this particular channel.
Next to linking the shaping nodes to a channel, the nominal ModCod and whether or not ACM is
enabled is defined in the channel configuration.
In the encapsulator define the ISI (Input Stream Identifier) the frame type and the encapsulation
protocol that is used to put the payload into Baseband frames. Once the BBF header is completed
the traffic can be forwarded towards the modulator block.
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