Learning by Doing: CISCO Certified Network ... - SCN Research

matt#copy run start
Be very careful to type this in exactly. Sometimes I get typing too quickly and I
type copy runs tart and hit enter quickly without looking at what I am doing.
Voila poof! I have totally wrecked my files and the operating system needs to be
totally re-loaded. You can see why speed can kill. CISCO has many versions of
its operating system. The one you are using is probably a derivative of version
12. Some of the older commands from previous versions still work with version
12 but do not show up in your help menus. One really helpful command that
duplicates the copy run start is the “write memory” command. All you have to
type is “wr” and the router automatically copies the running configuration file
over the start configuration file. Now you have no change of messing up the
router operating system with misspelled copy commands.
matt#wr
21. Thought you were done with prompts? Nope. One other type of prompt is called
the “global mode prompt.” From here we make changes to various parts of the
router. For example, when we want to configure an interface we first must be in
the “interface global mode prompt.” I know, lots of jargon. It really makes more
sense after you have done it a couple of times. Let’s look at the various types of
global mode prompts and the sequence from the user mode prompt we took to get
here(you do not have to type these in…just look at them):
matt>
matt>en
matt#config t
matt(config)#
Interface matt(config)#interface e0/0
matt(config-if)#
Sub-interface
Router
matt(config)#interface e0/0.1
matt(config-subif)#
matt(config)#router rip
matt(config-router)#
Console line matt(config)#line vty 0 4
matt(config-line)#
Your interface name and number can vary with your model. For example the
2500 routers use “e0” for the first Ethernet. The 2610 and 2611’s use “e0/0” and
the 2620 and 2621’s use “fa0/0.” Just learn by doing. You can also use the show
interface command (be sure you are not in config mode) too.
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