Since many users do not
reside on the same metro or regional ring, the ability to interconnect rings is an important
evolution of the solution.
In addition vendors are providing mechanisms for scaling RPR rings beyond 10Gbps.
The availability and cost of 40Gbps components and the complexity of switching at
those speeds is limiting, for now, the introduction of faster rate connections. However,
the vendor community is using bonding technologies to aggregate 10 Gpbs rings so that
it is now possible to create N ?— 10 Gbps RPR rings for high bandwidth applications.
Resilient Packet Ring (RPR) 361
With this capability service providers can now create rings with very high aggregate
data rates. This capability will be important in dense urban environments where millions
of customers are aggregated and in high bandwidth research applications that are
required by business, government, and scientific applications.
Economic Assessment
The models shown below demonstrate how the RPR performs financially compared to
alternatives based on different network criteria. These business models are representative
of actual network results. Every network is unique and the flexibility of an RPR
based ring means that its??™ actual benefits are best calculated using specific data from
real networks.
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