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Cisco Router Basic Configuration

There are three mode in a router
 1. Exe mode
 2. Privilege mode
 3. Configuration mode
Exe Mode: Exe mode can be determined by seeing that the router in the following symbol:
  “router > " [indicating that router in exe mode],

Privilege Mode: By typing enable [router > enable / en] in the exe mode we can enter in to the privilege mode.  
router > enable / en
    router #                       [indicating privilege mode]

Privilege mode commands are given below:
# show / sh version
# show history
# show terminal
# show start
# show run
# show flash
# show int
# show ip int br
# show controller
# show ip route [to see the routing table]
# show int S0/0

Configuration Mode: To move from privilege mode to configuration mode we have to give the configuration terminal or config t command in the privilege mode.

Ex.  Router # configuration terminal / config t
 Router (config)#   [indicating the configuration mode]

Basic Configuration in a Cisco Router:

Router>enable
Router# config t (configure terminal)
Router(config)#hostname RouterA  [configure host name]
RouterA(config)#enable password 123  [configure enable password]
RouterA(config)#enable secret 123  [configure enable secret password ]

Console Password configuration:

RouterA(config)#line console 0
RouterA(config-line)#password 12345
RouterA(config-line)#login


RouterA(config-line)#exit
RouterA(config)#

Configure auxiliary password:
 

RouterA(config)#line aux 0
RouterA(config-line)#password 123456
RouterA(config-line)#login
RouterA(config-line)#exit

Configure Telnet:
 

RouterA(config)#line vty 0 4
RouterA(config-line)#password telnet
RouterA(config-line)#login
RouterA(config-line)#exit

For Save the Configuration

Press Ctrl+Z then write wr or copy run start then press enter

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