Command Syntax Conventions

Command Syntax Conventions

The conventions used to present command syntax in this book are the same conventions used in the Cisco IOS Command Reference, as follows:

  • Boldface indicates commands and keywords that are entered literally as shown. In examples (not syntax), boldface indicates user input (for example, a show command).

  • Italics indicates arguments for which you supply values.

  • Square brackets ([ and ]) indicate optional elements.

  • Braces ({ and }) contain a choice of required keywords.

  • Vertical bars (|) separate alternative, mutually exclusive elements.

  • Braces and vertical bars within square brackets?for example, [x {y | z}]?indicate a required choice within an optional element. You do not need to enter what is in the brackets, but if you do, you have some required choices in the braces.