CCNA ROUTER COMMANDS

Enter privileged exec mode  -                                                                                          enable
Leave privileged exec mode and go back to user mode                                                 disable
Log out of the router, end the console session, same as exit command                       exit

yourname#config ?

confirm      -Confirm replacement of running-config with a new config file
memory    -Configure from NV memory
network   -Configure from a TFTP network host
overwrite-network  - Overwrite NV memory from TFTP network host
replace Replace       -the running-config with a new config file
terminal    - Configure from the terminal

yourname(config)#interface ?

Async                  Async interface
BVI                      Bridge-Group Virtual Interface
CDMA-Ix           CDMA Ix interface
CTunnel              CTunnel interface
Dialer                  Dialer interface
FastEthernet      FastEthernet IEEE 802.3
Group-Async      Async Group interface
Lex                        Lex interface
Loopback             Loopback interface
MFR                      Multilink Frame Relay bundle interface
Multilink               Multilink-group interface
Null                        Null interface
Port-channel          Ethernet Channel of interfaces
Serial                     Serial
Tunnel                    Tunnel interface
Vif PGM                 Multicast Host interface
Virtual-PPP            Virtual PPP interface
Virtual-Template    Virtual Template interface
Virtual-TokenRing  Virtual TokenRing
range                         interface range command