Discussion

Configuration mode has two basic components:
commands
Use to perform actions within the router’s configuration
statements
The actual keywords that define the configuration
To create or modify the router’s configuration, use the commands that are available
in configuration mode to add statements to the configuration that define the behavior
of the router. If you type a ? at the top level of configuration mode, you see the
broad types of commands you can use while configuring the router:
[edit]
aviva@router1# ?
Possible completions:
activate
annotate
commit
copy
deactivate
delete
edit
exit
help
insert
load
quit
rename
rollback
run
save
set
show
status
top
up
wildcard
Execute this command
Remove the inactive tag from a statement
Annotate the statement with a comment
Commit current set of changes
Copy a statement
Add the inactive tag to a statement
Delete a data element
Edit a sub-element
Exit from this level
Provide help information
Insert a new ordered data element
Load configuration from ASCII file
Quit from this level
Rename a statement
Roll back to previous committed configuration
Run an operational-mode command
Save configuration to ASCII file
Set a parameter
Show a parameter
Show users currently editing configuration
Exit to top level of configuration
Exit one level of configuration
Wildcard operations
When creating or modifying a configuration, you primarily use the edit and set
commands to control which configuration statement to include. Use the edit command
to move to the portion of the configuration you want to modify (this is similar
to using the Unix cd command to move to a different directory) and use the set command
to configure a specific item. The up command moves up one hierarchy level,
and the top command returns to the top of the hierarchy, [edit] (this command is
similar to the Unix cd / command). At the top level, use the exit or quit command
to return to operational mode.
4 | Chapter 1: Router Configuration and File Management
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