When you first power-on a newly purchashed Cisco device, it will perform a power-on self-test (POST) to discover the hardware components and verify that all components work properly. If the POST is successful, the device will enter the setup mode. This mode presents a step-by-step dialog to help you configure some basic parameters, such as the device hostname, passwords, interface IP address, etc. To enter the setup mode, power on your device and type yes when prompted to make a selection:
--- System Configuration Dialog --- Would you like to enter the initial configuration dialog? [yes/no]: yes At any point you may enter a question mark '?' for help. Use ctrl-c to abort configuration dialog at any prompt. Default settings are in square brackets ''. Basic management setup configures only enough connectivity for management of the system, extended setup will ask you to configure each interface on the system Would you like to enter basic management setup? [yes/no]: yes Configuring global parameters: Enter host name [Router]: R1 The enable secret is a password used to protect access to privileged EXEC and configuration modes. This password, after entered, becomes encrypted in the configuration. Enter enable secret: secret The enable password is used when you do not specify an enable secret password, with some older software versions, and some boot images. Enter enable password: cisco The virtual terminal password is used to protect access to the router over a network interface. Enter virtual terminal password: cisco Configure SNMP Network Management? [no]:no Current interface summary Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 unassigned YES manual administratively down down GigabitEthernet0/1 unassigned YES manual administratively down down GigabitEthernet0/2 unassigned YES manual administratively down down Vlan1 unassigned YES manual administratively down down Enter interface name used to connect to the management network from the above interface summary: GigabitEthernet0/2 Configuring interface GigabitEthernet0/2: Configure IP on this interface? [yes]: yes IP address for this interface: 192.168.0.1 Subnet mask for this interface [255.255.255.0] : The following configuration command script was created: ! hostname R1 enable secret 5 $1$mERr$5jbOD5lHVUWxAAsNOD6eO/ enable password cisco line vty 0 4 password cisco ! interface Vlan1 shutdown no ip address ! interface GigabitEthernet0/0 shutdown no ip address ! interface GigabitEthernet0/1 shutdown no ip address ! interface GigabitEthernet0/2 no shutdown ip address 192.168.0.1 255.255.255.0 ! end  Go to the IOS command prompt without saving this config.  Return back to the setup without saving this config.  Save this configuration to nvram and exit. Enter your selection : 2 Building configuration... [OK] Use the enabled mode 'configure' command to modify this configuration. Press RETURN to get started!
The wizard guides you through the initial configuration of your device and will create an initial configuration file. The setup mode is useful when you are unfamiliar with the IOS CLI, but once you learn the basics of CLI, you probably won’t use this mode ever again.
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