Explaintion of the Cisco router CCNA used command

Nov. 15, 2013 - PRLog -- During the set up some high-end Cisco 1921 router, often used in a variety of commands, each of which is a network must have knowledge, this paper introduces a commonly used commands: CCNA.

Because the command is too much, we have to sort by the letters.

A:

1, Access-enable: allows routers in the dynamic access to create a temporary access list listentrance;

2, Access-group: to the access control list (ACL) is applied to the interface;

3, Access-list: defines a standard IP acl;

I4, Access-template: in router connected to manually replace entrance temporary access list;

5, the Appn command is sent to the APPN subsystem;

6, Atmsig: implementation of ATM signaling command.

B:

1, Bandwidth set the interface bandwidth;

2, Banner MOTD: specified date information signs;

3, Bfe: set up emergency manual mode;

4, Boot system: designated router startup system image when loading.

C:

1, Calendar: set the hardware calendar;

2, Cd: change the path;

3, Cdp enable: allows running CDP protocol interface;

4, Clear: reset function;

5, Clear counters: clear interface counters;

6, Clear restart: interface hardware logic interface;

7, Clockrate: set the serial port hardware connection clock rate, rate such as network interfacemodule and interface processor can accept;

8, Cmt: open / close the FDDI connection management function;

9, Config-register: modify the configuration register settings;

10, Configure: allowed into the existing configuration mode, in the center site maintenance and save the configuration information;

11, Configure: memory from the NVRAM configuration information;

12, the Configure terminal manual configuration from the terminal;

13, Connect : open a terminal connection;

14, Copy: replication configuration or image data;

15, Copy flash TFTP: backup system image file to the TFTP server;

16, Copy running-config startup-config: RAM in the current configuration storage to NVRAM;

17, Copy running-config TFTP: RAM in the current configuration storage server to the networkTFTP;

18, the Copy TFTP flash from the TFTP server to download new image to Flash;

19, the Copy TFTP running-config to download the configuration file from the TFTP server.

D:

1, Debug: can use the debugging features;

2, the Debug dialer display interface in the dial any number and information and so on;

3, Debug IP rip display RIP routing update data;

4, Debug IPX routing activity display on the routing protocol (RIP) packet data update;

5, Debug IPX SAP display on SAP (business Announcement Protocol) to update the data packet information;

6, Debug ISDN q921 to display the data link layer in D channel ISDN interface on the router(layer second) access process;

7, Debug PPP occurs in PPP implementation of business and information exchange;

8, Delete to delete the file;

9, Deny is a named IP ACL set conditions;

10, Dialer Idle-Timeout provides a line disconnecting idle time before length;

11, the Dialer map is a serial interface to call one or more locations;

12, Dialer wait-for-carrier-time took a long time to wait for a carrier;

13, Dialer-group through the access control of belonging to a particular dial interface configuration;

14, the Dialer-list protocol defines a digital data receiver (DDR) to control the control dial dialcombination by agreement or ACL and protocol table;

15, Dir display of the given device file;

16, Disable to close the franchise mode;

17, Disconnect disconnect the connection has been established.

E:

1, Enable to open franchise mode;

2, Enable password set a password to prevent unauthorized access to the router;

3, the Enable password setting control different privilege level local password access;

4, the Enable secret enable password command defines an additional layer of security;

5, Encapsulation frame-relay start frame relay encapsulation;

6, Encapsulation novell-ether require the use of the network on the one and only Novell format;

7, Encapsulation PPP PPP set by the packaging method of serial or ISDN interface;

8, Encapsulation SAP require the use of the network segment on the Ethernet 802.2 formatCisco password is sap;

9, End to exit the configuration mode;

10, Erase delete data or configuration cache;

11, Erase startup-config to delete the contents of the NVRAM;

12, the Exec-timeout EXEC configuration command interpreter is detected in the user inputbefore the time to wait;

13, Exit quit all configuration mode or close an activation of the terminal session and termination of a EXEC;

14, Exit to terminate any configuration mode or off an active dialogue and finish EXEC.
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http://www.3anetwork.com/cisco-cisco1921-sec/k9-price_p21...