Router Modes

Router Modes
Router> --------------->User mode
Router# ---------------->Privileged mode
Router(config)# -------->Global configuration mode
Router(config-if)# ------>Interface mode
Router(config-subif)#--->Subinterface mode
Router(config-line)#----->Line mode
Router(config-router)#--->Router configuration mode

Global Configuration Mode
Router>------->In this mode you cannot make changes
Router>enable
Router#------->You can see the configuration and move to make changes.
Router#configure terminal
Router(config)#

Configuring a Router Name
Router(config)#hostname RTA
RTA(config)#

Configuring Passwords
Router(config)#enable password runcisco
Router(config)#line console 0
Router(config-line)#password thewayofccie
Router(config-line)#login
Router(config)#line vty 0 4
Router(config-line)#password telnet
Router(config-line)#login

Configuring a Serial Interface
Router(config)#interface s0/0
Router(config-if)#description Link to RTA---->(Optional command)
Router(config-if)#ip address 172.16.0.1 255.255.0.0
Router(config-if)#clock rate 64000------->Assigns a clock rate for the interface (The command is used only on a serial interface that has a DCE cable plugged into it.)
Router(config-if)#no shutdown----->Turns interface on

Configuring a Fast Ethernet Interface
Router(config)#interface fastethernet 0/0
Router(config-if)#description Sales LAN------>(Optional command)
Router(config-if)#ip address 192.168.101.1 255.255.255.0
Router(config-if)#no shutdown--------->Turns interface on

Saving Configurations
Router#copy running-config startup-config
Saves the running configuration to local NVRAM
Router#copy running-config tftp
Saves the running configuration remotely to a TFTP server
Router#erase startup-config
Deletes the startup configuration file from NVRAM