CLI Miscellany 1

certskills
By certskills August 1, 2016 09:05

The CCENT and CCNA R&S certifications include many prominent features that need to be configured. VLANs. Trunking. Routing protocols. IPv4 addressing. IPv6 addressing. But there are also the occasional small topic or single command that might be forgotten. This lab examines a couple of those easily forgotten commands, just to give them a little attention in hope that it might make you better prepared on test day.

Requirements

This lab is direct and straightforward. The lab uses a single router with two interfaces, with a list of requirements. Your job: remember the command(s) to achieve each function, and write/type the command with the correct syntax. In the next post, you can check your answers. The specific rules for this lab are:

  • Configure ‘Router’ so that if you happen to misspell a command and then press enter, the command will not automatically try to do name resolution with a DNS server as if the misspelled command were a hostname
  • Configure the console line so that the router will synchronize the output of log and debug messages versus solicited command output
  • Configure the console so it times out after 5 minutes of inactivity
  • Administratively disable both the GigabitEthernet0/1 and 0/2 interfaces

 

Figure 1: Single Router Topology

 

Initial Configuration

Example 1 shows the beginning configuration state of Router.

 

Example 1: Router Config

 

Answer on Paper, or Maybe Test in Lab

Next, write your answer on paper. Or if you have some real gear, or other tools, configure the lab with those tools.

To test your solution if you happen to try it with VIRL or real gear, to check this one there are a few steps.

First, just type a badly misspelled word as a command. If you configured the lab correctly, IOS should not delay more than a second or so to give you a new command prompt. not getting a long lookup delay.

Next, to verify the console timeout, you can either verify the configuration in the running configuration, or by waiting five minutes to see if the console exits automatically.

Verifying whether message synchronization works is a little harder to do in lab, so the best way to confirm the feature is to check the configuration versus the answer post.

Finally, for the verification of the GigabitEthernet0/1 and 0/2 interface being disabled, issue the show ip interfaces brief command and verify that both interfaces are shown as administratively down.

 

Do this Lab with Cisco’s VIRL

You can do these labs on paper and still get a lot out of the lab. As an extra help, we have added files for the Virtual Internet Routing Lab (VIRL) software as well. The .VIRL file found here is a file that when used with VIRL will load a lab topology similar to this lab’s topology, with the initial configuration shown in the lab as well. This section lists any differences between the lab exercise and the .VIRL file’s topology and configuration.

Download this lab’s VIRL file!

All interfaces in topology match the lab figure.

NTP Client/Server 1
Answers: NTP Client/Server 1
certskills
By certskills August 1, 2016 09:05
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1 Comment

  1. Lester March 3, 08:05

    Mr. Odom, thank you very much, for writing this Lab Exercise for those students who are willing to learn. Every lecture matters when it come to learning. As well, it’s a excellent way to make practice as you keep reading through the book (Certification Guide)…

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