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Here is a useful command for initial setup on Cisco router.
Save setup
Router# copy running-config startup-config
You need to execute it after changed setup. Otherwise it will be gone after router restarted.
Date & Time
Router# clock set 12:34:56 october 15 2009
Router# show clock
Host name
Router(config)# hostname name
Buffer setup for logging (Log can be saved in buffer.)
Router(config)# logging buffered
Reject access from web browser
Router(config)# no ip http server
If you would like to enable it again,
Router(config)# ip http server
Create a speed command by user
Router(config)# alias exec speed-command original-command
For example,
Router(config)# alias exec sr show running-config
Show message when logging in
Router(config)# banner motd # message #
Kill inquiry to DNS when inputting wrong command
Router(config)# no ip domain lookup
Kill auto disconnection from console or telnet (10mins)
To keep remote session,
Router(config)# line vty 0 4
Router(config-line)# exec-timeout 0 0
To keep local session,
Router(config)# line console 0
Router(config-line)# exec-timeout 0 0
Or you can input no exec-timeoue.
(Default is exect-timeout 10 0)
Kill status message breaking in the line while inputting command
Sometimes the router status message makes your inputting cursor move to somewhere. To prevent this,
Router(config)# line console 0
Router(config-line)# logging synchronous
Always enable password mode
For console,
Router(config)# line console 0
router(config-line)# privilege level 15
For telnet,
Router(config)# line vty 0 4
router(config-line)# privilege level 15
Change the page length
The default setup is 24 lines for one page. This is how to show all in the screen at once.
Router(config)# line console 0
Router(config-line)# length 0