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Understanding Command Modes

Cisco 7100 Series VPN Configuration Guide

1-8

Understanding Command Modes

The Cisco IOS user interface is divided into many different modes. The commands

available to you at any given time depend on which mode you are currently in. Entering a

question mark (?) at the system prompt allows you to obtain a list of commands available

for each command mode.

When you start a session on the router, you begin in user mode, often called EXEC mode.

Only a limited subset of the commands are available in EXEC mode. To have access to all

commands, you must enter privileged EXEC mode (also called enable mode). Normally,

you must enter a password to enter privileged EXEC mode. From privilegedmode, you can

enter any EXEC command or enter global conﬁguration mode. Most of the EXEC

commands are one-time commands, such as show commands, which show the current

status of something, and clear commands, which clear counters or interfaces. The EXEC

commands are not saved across reboots of the router.

Router(config-controller)# cas-group 1 timeslots 1-24 type

e&m-fgb dtmf ?

dnis DNIS addr info provisioned

service Specify the type of service

<cr>

Router(config-controller)# cas-group 1 timeslots 1-24 type

e&m-fgb dtmf

In this example, the dtmf keyword

is entered. After you enter the dtmf

keyword, enter a ? to display what

you must enter next on the

command line. In this example, you

can enter the dnis or service

keyword to indicate the options

available for dtmf tone signaling.

When the system redisplays the

command, it indicates that you can

enter more keywords or press <cr>

to complete the command.

Router(config-controller)# cas-group 1 timeslots 1-24 type

e&m-fgb dtmf

Router(config-controller)#

In this example, enter a <cr> to

complete the command.

Table 1-1 How to Find Command Options (continued)

Command Comment

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 111 112

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