Page 1395 - 5G Basics - Core Network Aspects

Signalling aspects 3

Annex C

Scenarios and requirements of BNG event and status notification
to the service platform

(This annex forms an integral part of this Recommendation.)

C.1 Scenarios and requirements of BNG event and status notification to the service platform
Network services and the service platform have the requirement of knowing what is happening in the BNG.
Based on the running status of the BNG, network services do their specific service handing.
The event and status notifications to the service platform may be reported in a reactive or proactive way. In
the reactive way, only when the request from the service platform is received, will the BNG send the
notifications. On the other hand, in the proactive way, the BNG keeps on sending the notification to the
service platform whether it is requested or not.

The event and status notification are categorized into three types: resource notifications, failures/faults
notifications, and statistics notifications. The following clauses elaborate each of these in detail.
C.1.1 Resource notifications

Resources within the BNG are composed of general resources of IT, such as CPU, RAM, storage, etc. As a
network entity, BNG resources include ports, bandwidth between the BNG and service platform, capacity of
forwarding rules, line-card forwarding speed, capacity of access users, etc.
Most of the time, these resources remain the same. Resource notification only needs to be reported to the
service platform once.
These notifications properly fall into the reactive way.

C.1.2 Failure/faults notifications

The failure/faults are of all levels of BNG malfunctions, such as port down or up, link down or up, unsupported
rules, exceeding the capacity, line-card dump, etc. All these events are essential to specific network services.

For example, the link down or up notifications are crucial to the network topology discovery service. Based
on the notification, the topology can be closely in accordance with the real network topology.

The failure and faults should to be handled promptly, and then these notifications should be in the proactive
way.
C.1.3 Statistics notifications

The BNG acts according to the actions from the service platform and network services. The BGN can be
configured to do some statistics. The statistics may include port rate, bandwidths consumed, link utilization,
current CPU usage, percentage of forwarding rules consumed, etc.
When the BNG receives the statistics requests, and in case this kind of statistics are enabled by the
configuration, the statistics will be reported to the service platform or the network service.
The statistics notifications are sent to the service platform only when they are requested. This is the reactive
way.

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