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http:\\ciscocertifications.info
To use a TFTP server you must specify the TFTP server's hostname or IP address and the name of the
file.
To view the configuration in NVRAM:
show startup-config
To view the current running configuration:
show running-config
To re-execute the configuration commands located in NVRAM:
configure memory
To erase the contents of NVRAM:
erase startup-config *Keypoints:If NVRAM is erased or corrupted and a new IOS is reloaded, the router will start in setup mode.In Setup Mode, the default settings will appear in squared brackets ([ ] ).Use show startup-config to display the backup configuration.The back-up configuration info is stored in NVRAM.Passwords, Identification, and BannersPasswords
There are five different password that can be used when securing your Cisco Router; Enable Secret,
Enable Password, Virtual Terminal Password, Auxiliary Password, and Console Password.
Enable Secret
This is a cryptographic password which has precedence over the enable password when it exists. Can
be set up during setup mode or from global config.
Router(config)# enable secret <password>
This is the Password required to enter Priv EXEC mode.
Enable Password
Used when there is no Enable Secret or when you are using older software. Can be set up during setup
mode or from global config.
enable password <password>
The enable and enable secret password cannot be the same.
Virtual Terminal Password
Used for Telnet sessions to the Router. Must be specified or you will not be able to log in to the router.
Can be set up during setup mode or from global config.
line vty 0 4loginpassword <password>
Sets the telnet login password. Line vty 0 4 specifies the number of Telnet sessions allowed in the
router.