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9. Which IOS release is recommended?

The first IOS to support TACACS+ is 10.3, but accounting was not supported until 11.0(3). Radius is first supported in 11.1. IOS 11.2 supports more attributes, and in IOS 11.3 the implementation of both protocols was further completed.

However, IOS 11.3 is still quite young, so it's a bit dangerous to generally deploy it now (1998-04-01). My personal preference is IOS 11.2(12). With few exceptions, the later releases of a major release (e.g. 11.2(12)) are always better and more stable than earlier ones (e.g. 11.2(2)).


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