2. Conventions and Definitions

This section preserves the RFC text for the TACACS+ client YANG model, including RFC 9105 changes, TLS 1.3 support, the ietf-system-tacacs-plus module, credential references, NACM-sensitive nodes, IANA registrations, JSON examples, and the full tree.

Original RFC Text

2.  Conventions and Definitions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

   Some examples in this document contain long lines that are wrapped as
   described in [RFC8792].

   The terminology for describing YANG data models is defined in
   [RFC7950].

   The document uses the terms defined in Section 2 of [RFC9887] and
   Section 3 of [RFC8907].

   'client' refers to a TACACS+ client, while 'server' refers to a
   TACACS+ server.

2.1.  Tree Diagrams

   The tree diagrams used in this document follow the notation defined
   in [RFC8340].