High Throughput Configurations
In cases that require lesser levels of redundancy, a system of SBRCs can be configured with a more standalone approach to provide scaling. The separation of authentication and accounting paths can be made when the RADIUS accounting (especially, the start) carries all the information that needs to be contained within the session state.
When the advanced cryptography load sufficiently outweighs the resource-allocation work (for concurrency and IP address allocation through the SSR), load-balancing the cryptography over multiple machines while doing the resource allocation in a central way can provide a total throughput increase.