Common configuration commands for Cisco routers (1)

This document lists frequently-used configuration commands for Cisco routers in alphabetical order.

Access-enable allows the router to create a temporary Access list entry in the dynamic Access list
Access-group: Apply the Access control list (ACL) to the interface.
Access-list defines a standard IP ACL
Access-template manually replaces the temporary Access list entry on the connected vro
Appn sends commands to the APPN Subsystem
ATM sig executes ATM signaling commands
B. Manually boot the Operating System
Bandwidth: Set the Bandwidth of the interface.
Banner motd
Bfe emergency manual mode
Boot system specifies the system image loaded when the vro starts.
Calendar
Cd change path
Cdp enable allows interfaces to run CDP protocol
Clear Reset Function
Clear counters Clear interface counters
Clear interface component logic on the restart interface
Clockrate: set the clock rate of the serial port hardware connection, such as the acceptable rate of the network interface module and interface processor.
Cmt enables/disables FDDI connection management
Config-register modify configuration register settings
Configure allows you to enter the existing configuration mode and maintain and save the configuration information on the central site.
Configure memory load configuration information from NVRAM
Configure terminal manual configuration from the terminal
Connect
Copy configuration or image data
Copy flash tftp back up system image files to the TFTP Server
Copy running-config startup-config stores the current configuration in RAM to NVRAM
Copy running-config tftp stores the current configuration in RAM on the network TFTP Server
Copy tftp flash download new image from TFTP server to Flash
Copy tftp running-config download the configuration file from the TFTP Server
Debug debugging
Debug dialer displays the number of interfaces and other information.
Debug ip rip display RIP route selection update data
Debug ipx routing activity displays information about route selection protocol (RIP) Update packets
Debug ipx sap displays SAP Business announcement protocol) Update packet information
Debug isdn q921 shows the access process of layer 2nd of the data link layer on the D-channel ISDN interface of the router.
Debug ppp displays the business and exchange information during the implementation of PPP
Delete File
Deny is used to set conditions for a named ip acl.
Dialer idle-timeout specifies the length of idle time before the line is disconnected.
Dialer map sets a serial interface to call one or more locations
Dialer wait-for-carrier-time specifies how long it takes to wait for a carrier
Dialer-group configures the interfaces of a specified dial-up group to control access.
Dialer-list protocol defines a digital data receiver DDR) the dial-up table controls dialing through a combination of protocols or ACLs and protocols
Dir: displays files on a specified device.
Disable
Disconnect
Enable
Enable password: determine a password to prevent unauthorized access to the vro.
Enable password: Set a local password to control access at different privileged levels
Enable secret defines an additional layer of security for the enable password command (mandatory security, non-plaintext display of the password)
Encapsulation frame-relay
Encapsulation novell-ether specifies the unique format of Novell used on the network segment
Encapsulation PPP sets PPP as the Encapsulation method used by the serial port or ISDN Interface
Encapsulation sap specifies that the Ethernet 802.2 format Cisco password used on the network segment is sap
End exit Configuration Mode
Erase deletes flash memory or configures Cache
Erase startup-config Delete content in NVRAM
Exec-timeout: specifies the time that the EXEC command interpreter has waited before user input.
Exit to Exit all configuration modes or to close an active Terminal session and terminate an EXEC
Exit to terminate any configuration mode or close an active dialog and end EXEC
Format formatting Device
Frame-relay local-dlci is used to start the local Management Interface (LMS) for a serial line encapsulated by Frame relay)
Help for an interactive Help system
History View History
The Hostname uses a host name to configure the router. The host name is used at a prompt or by default file name.
Set the Interface type and enter the Interface configuration mode.
Interface Configuration Interface Type and enter Interface Configuration Mode
Interface serial Select Interface and Input Interface Configuration Mode
Ip access-group controls access to an interface
Ip address: sets the logical network address of the interface.
Set an interface address and subnet mask for Ip address and start IP address processing.
Ip default-network creates a default route
Ip domain-lookup allows the router to use DNS by default
Ip host defines the ing between static host names and Ip addresses
Ip name-server specifies up to 6 server addresses for name-Address Resolution
Ip route creates a static route
Ip unnumbered starts the Internet Protocol IP address on the serial port when a clear Ip address is assigned to an interface.