The Command Reference describes these conventions
as follows:
??? Boldface indicates commands and keywords that are entered literally as shown. In
actual con?¬?guration examples and output (not general command syntax), boldface
indicates commands that are manually input by the user (such as a show command).
??? Italics indicate arguments for which you supply actual values.
??? Vertical bars (|) separate alternative, mutually exclusive elements.
??? Square brackets [ ] indicate optional elements.
??? Braces { } indicate a required choice.
??? Braces within brackets [{ }] indicate a required choice within an optional element.
File Server
PC Router Workgroup
Switch
PIX Firewall
IP Phone VPN
Concentrator
Access
Server
Firewall
Cisco 5500
Family
Modem
DSLAM
xv
Introduction
Welcome to ISCW! In 2006, Cisco Press contacted Scott and told him, albeit very quietly, that
there was going to be a major revision of the CCNP certi?¬?cation exams. They then asked whether
he would be interested in working on a command guide in the same fashion as his previous books
for Cisco Press: the Cisco Networking Academy Program CCNA Command Quick Reference and
the CCNA Portable Command Guide. The original idea was to create a single-volume command
summary for all four of the new CCNP exams.
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