NBN Co Network Design Rules

NBN Co Network Design Rules
3.7 Aggregation Domain
The Aggregation Domain performs fanout and aggregation of media between the Access Seekers
and the Access Domain for both the Fibre and Wireless Access Services. Aggregation Domain
network elements are exclusively deployed in Points of Interconnect sites (POIs).
For the Fibre Access Service, the majority of metropolitan Fibre Access Node (FAN) sites will also be
POI sites, where Access Seekers can connect their network equipment into the NBN Co – via the
External Network-to-Network Interface (E-NNI) – to service all end-users hosted off the FANs
associated with that POI.
In regional areas where end-user densities are lower, it will be more common for FAN sites and POI
sites to be in separate physical locations.
For the Wireless Access service, the Aggregation Domain connects locally at the POI to the Wireless
Access Domain.
The Aggregation Domain network elements are:
The Ethernet Aggregation Switch (EAS)
The Ethernet Fanout Switch (EFS)
The Ethernet Combined Switch (ECS)
1.1.22. Ethernet Aggregation Switch (EAS)
This platform is used to aggregate a number of Access Domain network interfaces and provide traffic
forwarding towards other Aggregation Domain network elements such as the EFS, or another EAS.
To support Access Domain network interface resiliency, EAS are deployed in pairs.
The EAS node is connected to its paired EAS node and to the EFS nodes using N × 10Gbps direct fibre
links, where N is 1 to 5.
EAS
EFS
N × 10Gbps
N × 10Gbps
N × 10Gbps
EAS
EFS
Figure 29 Aggregation Domain interfaces on the EAS
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