About this Guide This document pertains to the features and functionality that run on and/or that are related to the Cisco® ASR 5000 Chassis. This preface includes the following sections: • Conventions Used • Contacting Customer Support • Additional Information Conventions Used The following tables describe the conventions used throughout this documentation. Icon Notice Type Description Information Note Provides information about important features or instructions. Caution Alerts you of potential damage to a program, device, or system. Warning Alerts you of potential personal injury or fatality. May also alert you of potential electrical hazards. Electrostatic Discharge (ESD) Warns you to take proper grounding precautions before handling ESD sensitive components or devices. Typeface Conventions Description Text represented as a screen display This typeface represents text that appears on your terminal screen, for example: Login: Text represented as commands This typeface represents commands that you enter at the CLI, for example: show ip access-list This document always gives the full form of a command in lowercase letters. Commands are not case sensitive. Text represented as a command variable This typeface represents a variable that is part of a command, for example: show card slot_number slot_number is a variable representing the desired chassis slot number. Text represented as menu or sub-menu names This typeface represents menus and sub-menus that you access within a software application, for example: Click the File menu, then click New. Command Syntax Conventions Description { keyword or variable } Required keywords and variables are surrounded by braces. They must be entered as part of the command syntax. [ keyword or variable ] Optional keywords or variables that may or may not be used are surrounded by brackets. | Some commands support alternative variables. These “options” are documented within braces or brackets by separating each variable with a vertical bar. These variables can be used in conjunction with required or optional keywords or variables. For example: { nonce | timestamp } OR [ count number_of_packets | size number_of_bytes ] Contacting Customer Support Go to http://www.cisco.com/cisco/web/support/ to submit a service request. A valid Cisco account (username and password) is required to access this site. Please contact your Cisco account representative for additional information. Additional Information Refer to the following guides for supplemental information about the system: • Command Line Interface Reference • Statistics and Counters Reference • Thresholding Configuration Guide • SNMP MIB Reference • Web Element Manager Installation and Administration Guide • Product-specific and feature-specific administration guides • Release notes that accompany updates and upgrades to StarOS