> About this Guide
> This document pertains to features and functionality that run on and/or that are related to the Cisco® ASR 5000 Chassis, formerly the Starent Networks ST40.
> Conventions UsedConventions UsedConventions 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.
> | Electro-Static Discharge (ESD) | Alerts you to take proper grounding precautions before handling a product.

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> Typeface Conventions | Description
> Text represented as a screen display | This typeface represents displays that appear on your terminal screen, for example: Login:
> Text represented as commands | This typeface represents commands that you enter, 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

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> Command Syntax Conventions | Description
> { keyword or variable } | Required keywords and variables are surrounded by grouped brackets. Required keywords and variables are those components that are required to be entered as part of the command syntax.
> [ keyword or variable ] | Optional keywords or variables, or those that a user may or may not choose to use, are surrounded by square brackets.
> | | With some commands there may be a group of variables from which the user chooses one. These are called alternative variables and are documented by separating each variable with a vertical bar (also known as a pipe filter). Pipe filters 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 ]

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> Contacting Customer SupportContacting Customer SupportContacting Customer Support
> Use the information in this section to contact customer support.
> For New Customers: Refer to the support area of http://www.cisco.com for up-to-date product documentation or to submit a service request. A valid username and password is required to this site. Please contact your local sales or service representative for additional information.
> For Existing Customers with support contracts through Starent Networks: Refer to the support area of https://support.starentnetworks.com/ for up-to-date product documentation or to submit a service request. A valid username and password is required to this site. Please contact your local sales or service representative for additional information.
> Important: For warranty and repair information, please be sure to include the Return Material Authorization (RMA) tracking number on the outside of the package.

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