Cisco Systems 1000 Series 用户手册

Means reader take note.

Means the following information will help you solve a problem. 

Means reader be careful. In this situation, you might perform an action that could result in equipment 
damage or loss of data.

Means the described action saves time. You can save time by performing the action described in 
the paragraph. 

For information on obtaining documentation, submitting a service request, and gathering additional 
information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and 
revised Cisco technical documentation, at:

Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed 
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free 
service and Cisco currently supports RSS version 2.0.

italic font

Document titles, new or emphasized terms, and arguments for which you supply 
values are in italic font.

[   ]

Elements in square brackets are optional.

{x | y | z }

Required alternative keywords are grouped in braces and separated by 
vertical bars.

[ x | y | z ]

Optional alternative keywords are grouped in brackets and separated by 
vertical bars.

string

A nonquoted set of characters. Do not use quotation marks around the string or 
the string will include the quotation marks.

courier

 font

Terminal sessions and information the system displays appear in 

courier

 font.

<   >

Nonprinting characters such as passwords are in angle brackets.

[   ]

Default responses to system prompts are in square brackets.

!, #

An exclamation point (!) or a pound sign (#) at the beginning of a line of code 
indicates a comment line.