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Signalling aspects 3

7.2 Service configuration on the BNG

7.2.1 Message types
The service platform needs to configure the BNG. This is a basic requirement of the services, as well as the
openness of the BNG functionalities and capabilities. The detailed scenarios and requirements are stated in
Annex B.
The message types for the service configuration on the BNG are depicted in Figure 4.

Figure 4 – Service configuration message types on BNG

As illustrated in Figure 4, services on the service platform may have multiple configurations on the BNG. The
configuration message follows the request and response pairs, and the response message is optional.
For the two messages:
1) Configuration request: this message is used for conveying the service’s configurations;

2) Configuration response: this message is used by the BNG for confirming the service's configurations.
This message is optional. The services can configure the BNG to set its option.

The service configurations on the BNG are executed in the configuration request/response mode, and the
response is optional. For the message mode, two message types are defined. The services use the
configuration request (C-REQ) message to send the configurations to the BNG. The BNG sends the
configuration response (C-RSP) message to notify the services whether the configuration(s) have/has been
handled correctly or not.

The message composition of C-REQ and C-RSP is the same as clause 7.1.1, which is illustrated in Figure 3.
7.2.2 Message format

7.2.2.1 Network service configuration message

The network service configuration message is defined as the C-REQ message.
For either the static configurations or the runtime configurations, in the view of the message composition,
there is no difference.
All of the service configurations from the service platform to the BNG follow the format of the C-REQ
message.
The C-REQ message, indicated by the message type in the message header field, is sent by the services
deployed on the service platform to configure the BNG.
Message format:
< C-REQ-Message > ::= < Message Header >
{ Service-Platform-Id }
{ BNG-Id }
*{ Configuration-Type-Id }
*{ Configuration-Value }

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