Separating RADIUS Authentication and Accounting functionality

Network RADIUS marketing at
Wed Dec 1 15:33:02 CET 2021

** Why you should separate RADIUS Authentication and Accounting functionality (sometimes)
Many ISP networks have Authentication and Accounting handled by the same databases. This configuration works for many situations, especially small and low-load systems. There are times, however, when it is beneficial to separate the functions of Authentication and Accounting. Doing so can increase performance, and scalability.

Accounting requests can slow down authentication

ISP customers expect to be able to access the network quickly and reliably. To provide a good customer experience, ISPs need the Authentication and Authorization functions to be extremely responsive to user requests. However, Accounting queries to do monthly billing statements can have an enormous impact if they are competing for resources with the Authentication queries.

The solution here is to split the functionality in two. We recommend that ISPs deploy at least two separate RADIUS servers at each site. There should be a clear division of responsibilities between the servers.

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