Chapter 1-15 Commands Commands: access-enable Enables the router to create a temporary access list entry in a dynamic access list. access-template Manually places a temporary access list entry on a router to which you are connected. appn Sends a command to the APPN subsystem. atmsig Executes ATM signaling commands. b Boots the operating system manually. bandwidth Sets a bandwidth value for an interface. banner motd Specifies a message-of-the-day banner. bfe Sets manual emergency modes. boot system Specifies the system image that the router loads at startup. calendar Manages the hardware calendar. cd Changes the current device. cdp enable Enables Cisco Discovery Protocol on an interface. clear Resets functions. clear counters Clears the interface counters. clockrate Configures the clock rate for the hardware connections on serial interfaces, such as network interface modules and interface processors to an acceptable bit rate. cmt Starts or stops FDDI connection management functions. configure Allows you to enter changes to an existing configuration and maintain and store configuration information at a central site. configure memory Loads configuration information from nonvolatile random-access memory. config-register Changes the configuration register settings. configure terminal Configures the terminal manually from the console terminal. connect Opens a terminal connection. copy Copies configuration or image data. copy flash tftp Copies the system image from Flash memory to a tftp server. copy running-config tftp Stores the current configuration in RAM on a network TFTP server. copy running-config startup-config Stores the current configuration in RAM into NVRAM. copy tftp flash Downloads a new image from tftp server to Flash memory. copy tftp runnig-config Loads configuration information from a network TFTP server. debug Uses debugging functions. debug ip rip Displays RIP routing updates as they are sent and received. delete Deletes a file. dir Lists the files on a given device. disable Turns off privileged commands. disconnect Disconnects an existing network connection. enable Turns on privileged commands. enable password Sets a local password to control access to various privilege levels. enable secret Specifies an additional layer of security over the enable password command. erase Erases Flash or configuration memory. erase startup-config Erases the content of NVRAM. exit Exits any configuration mode, or closes an active terminal session and terminates the EXEC. format Formats a device. help Gets a description of the interactive help system. history Enables the command history function. interface Configures an interface type and enters interface configuration mode. ip address Assigns an address and a subnet mask and starts IP processing on an interface. ip default-network Establishes a default route. ip domain-lookup Enables name-to-address translation in the router. ip host Makes a static name-to-address entry in the router's configuration file. ip name-server Specifies the addresses for up to six name servers to use for name and address resolution. ip route Establishes static routes. lat Opens a LAT connection. line Identifies a specific line for configuration and starts the line configuration command collection mode. lock Locks the terminal. login Logs in as a particular user. Enables password checking at login. logout Exits from EXEC mode. mbranch Traces down a branch of a multicast tree for a specific group. media-type Specifies the physical connection. mrbranch Traces up a branch of a multicast tree for a specific group. mrinfo Requests neighbor and version information from a multicast router. mstat Shows statistics after multiple multicast traceroutes. mtrace Traces the path from a source to a destination branch for a multicast distribution tree. name-connection Names an existing network connection. ncia Starts/stops the NCIA server. network Assigns a Network Information Center-based address to which the router is directly connected. no shutdown Restarts a disabled interface. pad Opens an X.29 PAD connection. ping Sends an echo request; diagnoses basic network connectivity. ppp Starts the IETF Point-to-Point Protocol. pwd Displays current device. reload Halts and performs a cold return; reloads the operating system. rlogin Opens an rlogin connection. router Starts a routing process by first defining an IP routing protocol. For example, router rip selects RIP as the routing protocol. rsh Executes a remote command. sdlc Sends SDLC test frames. send Sends a message over tty lines. service password-encryption Enables the password encryption function. setup Enters the setup command facility. show buffers Provides statistics for the buffer pools on the network server. show cdp entry Displays information about a neighbor device listed in the CDP table. show cdp interface Displays information about the interfaces on which CDP is enabled. show cdp neighbors Displays the results of the CDP discovery process. show flash Displays the layout and content of Flash memory. show hosts Displays a cached list of host names and addresses. show interfaces Displays statistics for all interfaces configured on the router. show ip interface Displays the status and global parameters associated with an interface. show ip protocols Displays the parameters and current state of the active routing protocol process. show ip route Displays the contents of the IP routing table. show memory Shows statistics about the router's memory, including memory-free pool statistics. show processes Displays information about the active processes. show protocols Displays the configured protocols. This command shows the status of any configured Layer 3 protocol. show running-config Displays the current configuration in RAM. show stacks Monitors the stack use of processes and interrupt routines and displays the reason for the last system reboot. show startup-config Displays the saved configuration, which is the contents of NVRAM. show version Displays the configuration of the system hardware, the software version, the names and sources of configuration files, and the boot images. shutdown Disables an interface. telnet Logs into a host that supports telnet. term ip Specifies the format of network masks for the current session. trace Determines a path that packets will take when traveling to their destination. verify Verifies the checksum of a Flash file. where Lists active connections. which-route Does OSI route table lookup and displays results. write Writes the running configuration to memory, a network, or a terminal. write erase The erase startup-config command replaces this command. write memory The copy running-config startup-config command replaces this command. x3 Sets X.3 parameters on PAD. xremote Enters XRemote mode.