Cisco CCNA Certification: Five Key Combinations You Should Know

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When you get started studying for your CCNA and CCNP exams, you will be presented by many novels with a massive collection of shortcuts for use on Cisco routers. You really have to become hands-on experience to master them, while the 640-801, 811, and 821 examinations might ask you about a couple of these. Better still, there are a number of combinations which Cisco routers cite, but don’t tell you exactly what they are! Let us look at some of the more helpful key combinations, and complete with the”key” way to prevent a ping or traceroute.

The up arrow on your keyboard is fantastic for repeating the previous command you have typed. Let us say you mis-enter an access-list. Rather than typing it simply hit your arrow to replicate that, and then repair the issue.

CTRL-A takes the cursor to the start of a typed line. You know that can be a very long control, if you’ve written an elongated ACL, and one you probably don’t need to retype. Use your arrow to repeat your control, if you buy a carat indicating there is a problem with the line. Use the cursor to move to the start of the line, if you find the error is near the start. CTRL-E takes the cursor to the end of a line.

You’ve got a few alternatives, to move the cursor via a line without erasing characters. You might also utilize CTRL-B to return and forth CTRL-F to proceed, although Personally, I like to use the right and left arrows.

Finally, there’s the mix that Cisco cites to you once you run traceroute or ping, however they do not tell you what it is! If you don’t understand this one if you send an elongated ping or a traceroute, you could be looking at asterisks for a long time. In the following example, a traceroute is failing:

R2#traceroute 10.1.1.1

Type escape sequence to abort.

Tracing the path to 10.1.1.1

1 * *

2 *

The challenge is that you’re likely to get 30 rows of these asterisks, which is time-consuming and frustrating at the time. Be aware the router console message”Type escape sequence to abort”. That is helpful – but what’s it?

This is: Just type CTRL-SHIFT-6 two times. The traceroute will end, although you won’t see anything on the router .

R2#traceroute 10.1.1.1

Type escape sequence to abort.

Tracing the path to 10.1.1.1

1 * *

2 * *

R2#
The traceroute was terminated. This mix works for pings as well, both regular and stretched. Of all the keystrokes you can learn, this one is the very valuable!