Del Mar College ITNW 1392-Beginnging Router Configuration Instructor:Michael P. Harris
Sem2Les6

Semester 2, Lesson 6 Notes:

The Router User Interface and Modes

1. Distinguish between 'user mode' and 'privileged mode'. "User mode" allows you to check router status; "privileged mode" allows you to actually change the router's configuration.

2. In "Cisco IOS", what is the 'user mode' prompt and what is the 'privileged mode' prompt? The '>' is the user prompt; the '#' is the privileged mode prompt.

• From the "privileged level", you can also access "global configuration mode" and the other specific configuration modes. These include 'interface', 'subinterface', 'line', 'router', 'route-map', and several additional configuration modes.

3. What must you type at the user or privileged mode prompts to display a list of commonly used commands?

(User-Mode Command List) You must type a "?" to display the list of commonly used commands.

4. When in user mode, what must do to enter privileged mode? Type "ena" or "enable" and then a password.

5. If you are unsure of the 'syntax' or 'arguments' for a command, what feature can be of great help to you?

If you guess at the command syntax and arguments, the "Cisco IOS" "context-sensitive help" will 'highlight' your errors and suggest corrections. Additionally, by adding a 'space' and then the question mark "?" after a partial command, you will get hints about how to proceed.

To log out of the router, type "exit".

Press Control-P (or up arrow) to repeat the previous command entry auotmatically.

The "caret symbol" (^) and help responce indicate an error. To list the correct syntax, re-enter the command up to the point where the error occured, and then enter a question mark (?). Note that the user interface provides syntax checking by placing a (^) where the error has occured. The caret symbol character appears at the point in the command string where you have entered an incorrect command, keyword, or argument. The error location indicator and interactive help system allow you to find and correct syntax errors easily.

"Editing Commands" Automatic scrolling of long lines

<Ctrl><A>     Move to the beginning of the command line 
<Crtl><E>     Move to the end of the command line 
<Esc><B>      Move back one word 
<Ctrl>><B>    Move back one character 
<Esc><F>      Move forward one word 

When the cursor first reaches the end of the line, the line is shifted ten spaces to the left and redisplaced. The dollar sign ($) indicates that the line has been scrolled to the left. Each time the cursor reaches the end of the line, the line is again shifted ten spaces to the left.

<Ctrl><P>             Last (previous) command recall 
<Ctrl><N>             More recent command call 
	 
	 
Router>show history            show command buffer 
Router>terminal history size   set command buffer size 
Router>no terminal editing     disable advanced editing 
featured 
Router>terminal editing        re-enable advanced editing 
<TAB>                          entry completion 

By default, command history is enabled and the system records ten command lines in its history buffer. The maximum number of commands is 256.

Ctrl-Z backs you out of configuration mode.

User-Mode Command List:

Router> ?
Exec commands:
access-enable	  Create a temporary Access-List entry
atmsig		  Execute ATM Signalling Commands
cd		  Change current device
clear		  Reset functions
connect		  Open a terminal connection
dir		  List files on given device
disable		  Turn off privileged commands
disconnect	  Disconnect an existing network connection
enable		  Turn on privileged commands
exit		  Exit from EXEC
help		  Description of the interactive help
 		  system
lat		  Open a lat connection
lock		  Lock the terminal
login		  Log in as a particular user
logiut		  Exit from EXEC
mrinfo		  Request neighbor and version information from
		  a multicast router
mstat		  Show statistics after mutiple multicast traceroutes
mtrace		  Trace reverse multicast path from dsetination to
		  source
name connection	  Name an existing network connection
pad		  Open a X.29 PAD connection
ping		  Send echo messages
ppp		  Start IETF Point-to-Point Protocol (PPP)
pwd		  Display current device
resume		  Resume an active network connection
rlogin		  Open an rlogin connection
ahow		  Show runnign system infromation	
slip		  Start Serial-line IP (SLIP)
systat		  Display infromation about terminal lines
tn3270		  Open a TN3270 connection
traceroute	  Trace route to destination
tunnel		  Open a tunnel connection
where		  List active connections
x3		  Set X.3 parameters on PAD
xremote		  Enter XRemote mode

Privileged-Mode Command List:

Router>era
Password:
Router# ?
Exec commands:
access-enable	     Create a temporary Access-List entry
access-template	     Create a temporary Access-list entry
appn		     Send a command to the APPN subsystem
atmsig		     Execute ATN Signaling Commands
bfe		     For manual emergency modes setting
calendar	     Manage the hardware calendar
cd		     Change current device
clear		     Reset functions
clock		     Manage the system clock
cmt		     Start to stop FDDI Connection Managements
		     functions
configure	     Enter configuration mode
connect		     Open a terminal connection
copy		     Copy configuration or image data
debug		     Debugging functions (see also 'undebug')
delete		     Delete a file
dir		     List files on a given device
disable		     Turn off privileged commands
disconnect	     Disconnect an existing network connection
enable		     Turn on privileged commands
erase		     Erase flash or configuration memory
exit		     Exit from the EXEC
format		     Format a device
help		     Description of the interactive help system
lat		     Open a lat connection
lock		     Lock the terminal
login		     Log in as a particular user
logout		     Exit from the EXEC
mbranch		     Trace multicast route down tree branch
mrbranch	     Trace reverse multicast route up tree 
		     branch
mrinfo		     Request neighbor and version information from
		     a multicast router
mstat		     Show statistics after multiple multicast 
		     traceroutes
mtrace		     Trace reverse multicast path from destination
		     to source
name-connection	     Name an existing network connection
ncia		     Start/Stop NCIA Server
no		     Disable debugging functions
pad		     Open an X.29 PAD connection
ping	             Send echo messages
PPP		     Start IETF Point-to-Point Protocol (PPP)
pwd		     Display current device
reload		     Halt and perform a cold restart
resume		     resume an active network connection
rlogin		     Open an rlogin connection
rsh		     Execute a remote command
sdlc		     Send SDLC test frames
send		     Send a message other tty lines
setup		     Run the Setup command facility
show		     Show running system information
slip		     Start Serial-line IP (SLIP)
squeeze		     Squeeze a device
start-chat	     Start a chat-script on a line
tarp		     TARP (Target ID Resolution Protocol)
		     commands
telnet		     Open a telnet connection
terminal	     Set terminal line parameters
test		     Test subsystems, memory and interfaces
tn3270		     Open a tn3270 connection
traceroute	     Trace route to destination
tunnel		     Open a tunnel connection
undebug		     Disable debugging functions (see also 'debug')
undelete	     Undelete a file
verify		     Verify checksum of a Flash file
where		     List active connections
which-route	     Do OSI route table lookup and display results
write		     Write running cinfiguration to memory, network
		     or terminal
x3		     Set X.3 parameters on PAD
 

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Lesson 5

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	viking.delmar.edu Last updated April 4			mpharris@surf.delmar.edu Copyright © 1999