Access-enable allows routers to create temporary access list entries in the Dynamic access list
Access-group applies access control lists (ACLs) to interfaces
Access-list defines a standard IP ACL
Access-template manually replace the temporary access list entry on the attached router
APPN send commands to the APPN subsystem
Atmsig Execute ATM Signaling command
B manually boot the operating system
Bandwidth set the bandwidth of the interface
Banner MOTD Specify date information banner
BFE set up burst event manual mode
The boot system specifies the system image that is loaded when the router starts
Calendar Set Hardware Calendar
Cd Change Path
CDP enable interface to run CDP protocol
Clear Reset function
Clear counters Clears interface counters
Clear interface to reboot the hardware logic on the interface
Clockrate sets the clock rate for serial hardware connections, such as the rate at which the network interface module and the interface processor can accept
CMT turn on/off FDDI connection management function
Config-register Modify Configuration Register settings
Configure allows access to existing configuration patterns, maintaining and saving configuration information on the central site
Configure Memory load configuration information from NVRAM
Configure Terminal manual configuration from a terminal
Connect open a terminal connection
Copy replication configuration or image data
Copy Flash TFTP backup system image file to 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 to a network TFTP server
Copy tftp Flash downloads a new image from the TFTP server to flash
Copy tftp running-config download configuration file from TFTP server
Debug using Debugging Features
Debug Dialer displays what number and such information the interface is dialing
Debug IP rip show RIP routing update data
Debug IPX Routing activity displays information about routing protocol (RIP) update packets
Debug IPX SAP Displays information about SAP (Business Notification Protocol) Update packet
The Debug ISDN q921 shows the access to the Data Link layer (layer 2nd) that occurred on the router D-Channel ISDN interface
Debug PPP shows the business and exchange information that occurs in the implementation of PPP
Delete Deletes files
Deny sets a condition for a named IP ACL
Dialer Idle-timeout
Specify 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 Specify how long it takes to wait for a carrier
Dialer-group access control by configuring interfaces that belong to a particular dial-up group
Dialer-list protocol defines a digital data receiver (DDR) dial table to control dialing through protocol or ACL and protocol combinations
Dir displays files on a given device
Disable off Concession Mode
Disconnect Disconnect an established connection
Enable Open Concession Mode
Enable Password determine a password to prevent unauthorized access to the router
Enable Password set local password control access at different privilege levels
Enable secret defines an additional layer of security for the Enable password command
Encapsulation Frame-relay boot Frame Relay Package
Encapsulation Novell-ether rules the Novell unique format used on the network segment
Encapsulation PPP set PPP to the encapsulation method used by the serial port or ISDN interface
Encapsulation SAP rules the Ethernet 802.2 format used on the network segment the Cisco password is SAP
End Exit Configuration mode
Erase Remove flash memory or configure cache
Erase Startup-config Delete the contents of the NVRAM
Exec-timeout configures the time that the EXEC command interpreter waits before it detects user input
Exit exits all configuration modes or closes an active terminal session and terminates an exec
Exit terminates any configuration mode or closes an active conversation and ends exec
Format formatting device
Frame-relay Local-dlci initiates a local management interface (LMI) for serial lines that use Frame Relay encapsulation
Help get the interactive assistance system
History View History
Hostname uses a host name to configure the router, which is used in the form of a prompt or default file name
Interface set interface type and input interface configuration mode
Interface Configure 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 set interface network logical addresses
IP address sets an interface and subnet mask and starts IP processing
Ip Default-network Establish a default route
Ip Domain-lookup allows routers to use DNS by default
IP host defines static host name to IP address mapping
Ip name-server specifies up to 6 server addresses for name-address resolution
Ip Route establish a static route
IP unnumbered The process of starting an Internet Protocol (IP) on a serial port in order to assign an explicit IP address to an interface
IPX Delay Set Point count
Ipx Ipxwan to start Ipxwan protocol on serial port
IPX Maximum-paths Set the number of equivalent paths used by Cisco IOS software when forwarding packets
IPX Network initiates routing of Internet Packet Exchange (IPX) on a specific interface and selects the encapsulated type (frame encapsulated)
The routing protocol used by the IPX router
IPX Routing Start IPX routing
IPX Sap-interval Set less frequent SAP (business AD Protocol) updates on slower links
The acceptance of IPX type-20-input-checks restrictions on the propagation of IPX20 packet broadcasts
ISDN SPID1 A Business profile number (SPID) that has been assigned to the B1 channel by an ISDN business vendor on the router
ISDN SPID2 A Business profile number (SPID) that has been assigned to the B2 channel by an ISDN business vendor on the router
ISDN Switch-type Specify the type of switch on the central office area on the ISDN interface
Keeplive for the serial line LMI (local management interface) mechanism using Frame Relay encapsulation
Lat Open lat Connection
Line to determine a specific route and start line configuration
Line Concole set console port lines
Line Vty provides a virtual terminal for remote console access
Lock the terminal console
Login initiated a password check during terminal session logon
Login is logged on as a user, allowing password verification at logon
Logout Exit EXEC Mode
Mbranch down-tracking multicast address routing to terminal
Media-type defines the type of media
Metric Holddown to isolate the new IGRP routing information from the IGRP routing information being used for a period of time
Mrbranch up resolution of multicast address routing to branch end
Mrinfo access to neighbor and version information from the multicast router
MSTAT displays statistics after multiple route tracking for multicast addresses
Mtrace Yuyuan to target tracking to resolve multicast address path
Name-connection name an existing network connection
Ncia turn on/off Ncia server
Network assigns a NIC-based address to a router that is directly connected to it to link the network to a IGRP routing process in IPX router configuration mode, to start the enhanced IGRP on the network
Network Specifies a network address segment that is directly connected to the router
Network-number a direct connection to a network of rules
No shutdown open a closed interface
Pad to open a x.29 pad connection
Permit set criteria for a named IP ACL
Ping sends ICMP response request packets to another node on the network to check the accessibility of the host and the connectivity of the network to diagnose the basic connectivity of the network
Ping sends echo requests to diagnose basic network connectivity
PPP starts IETF Point-to-Point protocol
PPP Authentication initiates Challenge Handshake Authentication Protocol (CHAP) or Password Authentication Protocol (PAP) or both, and sets the order of CHAP and PAP validation selected on the interface
PPP chap hostname Create a number of dial-up routers that appear to be the same host when using CHAP for authentication
PPP chap Password sets a password that is sent to the host command that authenticates the router limits the number of user names/passwords entering the router
PPP pap sent-username initiates remote PAP support on an interface and uses Sent-username and password in the process of Peer Request packet verification on PAP
Protocol defines an IP routing protocol, which can be RIP, internal Gateway Routing Protocol (IGRP), Open Shortest Path First (OSPF), or enhanced IGRP
PWD Display current device name
Reload shut down and perform cold boot; reboot the operating system
Rlogin Open an active network connection
Router the IP routing protocol defined by the first item as a routing process, for example: Router rip selection RIP as a routing protocol
Router IGRP initiates a IGRP route selection process
Router RIP selection rip as route selection protocol
Rsh Execute a remote command
SDLC Send SDLC Test frame
Send message on the TTY line
Service password-encryption Encryption of passwords
Setup runs the Setup command
Show shows running system Information
Show Access-lists Displays the contents of all current ACLs
Show buffers Display cache statistics
Show CDP entry displays information about adjacent devices listed in the CDP table
Show CDP interface display Open CDP interface information
Show CDP neighbors displays the results of the CDP lookup process
Show Dialer general diagnostic information for serial interfaces set up for DDR (digital data receiver)
Show Flash shows the layout and content information of flash memory
Show Frame-relay LMI displays statistics about the local management interface (LMI)
Show Frame-relay Map Displays the current mapping entry and information about the connection
Show Frame-relay PVC Displays statistical information about the permanent virtual circuit (PVC) of the Frame Relay interface
Show hosts cache list of host names and addresses
Show interfaces displays statistics for all interfaces set up on routers and access servers
Show interfaces shows the status of all interfaces configured on the router
Show interfaces serial displays information about a serial port
Show ip interface A summary of the IP information and status of an interface
Show IP interface lists the state and global parameters of the interface
Show IP protocols displays the parameters and current status of the active routing protocol process
Show IP route displays the current status of the routing table
Show ip router displays IP routing table information
Show IPX interface shows the status of the IPX interface set by Cisco IOS software and the parameters in each interface
Show IPX route displays the contents of the IPX routing table
Show IPX servers display list of IPX servers
Show IPX traffic shows the number and type of packets
Show ISDN Active displays information about the current call, including the called number, the time spent before the connection was established, the Automation control (AOC) charge unit used during the call, and whether AOC information was provided during and after the call
Show ISDN Ststus shows the status of all ISDN interfaces, or the status of a particular digital signal link (DSL) or the state of a particular ISDN interface
Show memory shows the size of the router's memory, including the amount of free memory
Show processes process for displaying routers
Show protocols protocol for display settings
Show protocols displays the configured protocols. This command shows the status of any configured layer 3rd protocol
Show Running-config Displays current configuration information in RAM
Show Spantree displays spanning tree information about a virtual local area network (VLAN)
Show stacks monitors and interrupts the use of the stack and shows why the system was last restarted
Show Startup-config Displays the startup configuration file in NVRAM
Show Ststus shows the current status of ISDN lines and two B channels
Show version shows the configuration of the system hardware, the version of the software, the name and source of the configuration file, and the boot image
Shutdown closes an interface
Telnet to open a telect connection
Term IP Specifies the format of the network mask for the current session
Term IP Netmask-format Specify the format that the network mask displays in the show command output
Timers basic controls how much time the IGRP sends update information
Trace Trace IP Routing
Username password The password used in the CHAP and PAP caller authentication process
Verify Inspection Flash File
Where shows active connections
Which-route OSI routing table lookup and display results
Write run configuration information to memory, network or terminal
Write Erase is now replaced by the copy startup-config command
X3 set X.3 parameters on pad
Xremote into Xremote mode