Cisco CCENT / CCNA Certification Exam Tutorial: Logging Synchronous And Exec-Timeout Commands

Cisco CCENT / CCNA Certification Exam Tutorial: Logging Synchronous And Exec-Timeout Commands

Throughout my CCENT and CCNA exam tutorials, you'll notice these two curious commands on the console port:

line con 0

exec-timeout 0 0

logging synchronous

I've been recommending these commands for years to CCNA and CCNP candidates putting their own home labs together, but they can come in handy on the job as well. Let's take these commands one at a time, starting with the logging synchronous command.

When the router wants you to know something, it wants you to know right now. If the router sends a message to the console while you're entering a config, by default the router will interrupt your work to show you that message.

In the following example, I opened a Serial interface, which will always result in at least two messages relating to the physical and logical state of the interface. I started typing a sentence immediately after I opened the interface to show you what happens. I've bolded the sentence I was entering.

R1(config)#int s0

R1(config-if)#no shut

R1(config-if)#^Z

R1#so here i am

4d04h: %SYS-5-CONFIG_I: Configured from console by consoletyp

4d04h: %LINK-3-UPDOWN: Interface Serial0, changed state to uping and

4d04h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to upi've been interrupted quite badly!

4d04h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down

This may seen trivial, but when you have a long command entry interrupted by a console message, you'll wonder how to prevent that from happening. (After you stop yelling at the router, that is.) By configuring the logging synchronous command on the console port, you're telling the router to hold such messages until it detects no input from the keyboard and no other output from the router, such as a show command's output.

R1(config)#line console 0

R1(config-line)#logging ?

synchronous Synchronized message output

The second command I always enter on the console port of a home lab router or switch is exec-timeout 0 0. This disables the default inactivity timeout of 5 minutes and 0 seconds. If you want to change that timer rather than disabling it, the first number represents the number of minutes in the inactivity timer and the second number is the number of seconds.

R1(config)#line con 0

R1(config-line)#exec-timeout ?

<0-35791> Timeout in minutes

R1(config-line)#exec-timeout 0 ?

<0-2147483> Timeout in seconds



R1(config-line)#exec-timeout 0 0 (disables the inactivity timer)


This command can also be configured on the VTY lines to set or disable the inactivity timer for Telnet and SSH users. Here, we'll set the VTY line inactivity timer to 10 minutes.

R1(config)#line vty 0 4

R1(config-line)#exec-timeout ?

<0-35791> Timeout in minutes

R1(config-line)#exec-timeout 0 ?

<0-2147483> Timeout in seconds



R1(config-line)#exec-timeout 10 ?

<0-2147483> Timeout in seconds



R1(config-line)#exec-timeout 10 0

Some network admins hate these commands, and I personally don't like to disable my router's Telnet and SSH inactivity timers. They're great commands for your present or future home lab, and I also recommend you know them for your CCENT and CCNA exams!

by Chris Bryant, CCIE #12933
Keyword : Cisco CCENT / CCNA Certification Exam Tutorial: Logging Synchronous And Exec-Timeout Commands

Laptop Battery Memory

Laptop Battery Memory

When we buy a laptop, it comes to us in a so called "discharged condition." It needs to be charged before usage. To have the maximum capacity, it is advised that the battery is charged at least 2-3 times. The first time you charge the batteries of the laptop, it would indicate that the charge is complete say after 10-15 mins. This, as indicated by several experts is the normal procedure to charge batteries. All you need to do is to remove the batteries and charge them again. You must always remember that the battery should be fully used before it is charged again. If this is not adhered to, then it shortens the life of the battery. The task of discharging the battery is simple. Run the laptop till such time the battery is fully exhausted or till such time you get a message, "Low battery, kindly recharge."

You must however make sure that you use the battery as frequent as possible. Failing to do so, it is wise to store in a dry and cool place. Do not get alarmed to find the battery becoming warm while it is being charged. Remember, a battery which is charge will for sure lose its charge in the long run, if it is not used. Therefore, it is better to charge the battery even after it is stored.

The so called run-time depends on the need for power by the equipment. For example, notebook computers make the use of monitors and the hard drive exhausts the battery, thereby reducing the run time of the battery.

There are several do's and don't which should be adhered to when it comes to battery performance. You should charge or discharge especially for the first three cycles when it is new. You should make sure that the battery and the contact terminals are clean. Be sure that you do not expose the battery to heat and cold. Make sure you use up the battery as the battery may wear of if it is not used for a longer period of time. You can make use of the accessories which come along with the laptop. Recondition the battery after a specific period.

There are however several don't which also should be kept in mind. You must take good care of the battery and not even drop or play around with it. Avoid putting the plug into the wrong socket. Never try and expose the contents of the cell and they may just be harmful. Make sure you do not expose the battery to external problems like water or moisture. Finally throw the used battery away. It cannot be recycled so make sure you know which trash can it needs to be thrown into.

by Frank Vanderlugt
Keyword : Laptop Battery Memory

Clean Registry Regularly For Better Speed

Clean Registry Regularly For Better Speed

Clean registry of your Windows based computer at regular intervals. Cleaning registry regularly will keep the registry trim and up to date.

Before we start discussing the need to clean registry for better understanding of the subject and faster computing, let us take a look at what registry is and what is its importance? Registry is a file in which all the hardware and software configurations are stored for the system to function properly. Registry is a typical feature of Windows operating system. That means you will find a registry in each and every computer that runs a Windows OS. More precisely since the Windows 95 version, Microsoft adopted this technique of storing the system configuration through a registry. Earlier, that is before Windows 95, these details were stored in the INI files that used to be stored throughout the hard disc in a scattered way, making the system inefficient and slow.

With the introduction of registry, all the system settings are stored in a single file that helps the system to access these data as and when required within less time. So, registry in a way makes the system run faster. You must be wondering that if registry is helping the system to function smoothly then, why should you clean registry? Before we answer that, let's take a deeper look at the functioning of registry or to be correct, Windows registry.

As we have already mentioned, registry keeps the configuration of the computer and settings of the systems, it also creates a log for every change that you make to your computer. Whenever you install or uninstall any software, add or remove any hardware device, or make any changes to the settings of the system, a log is generated in the registry. The worst part is that the previous log is never automatically deleted, and you need to clean registry to do that. But then what's wrong with the entries? What if we do not clean Windows registry and let all the entries remain as it is?

It is important to clean registry from time to time as to keep the registry up to date. With so many entries that are cluttered in the Windows registry, the system becomes slower and vulnerable to frequent malfunctioning. With registry clean software you can easily clean the Windows registry of all the outdated and unwanted entries. It will always keep your registry up to date and ensure better and faster computing. So, if you want problem free computing experience, do clean your PC registry regularly.

by Arvind Singh
Keyword : Clean Registry Regularly For Better Speed

Computer Rental Company

Computer Rental Company

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We offers top quality equipment from the major manufacturers such as apple, canon Cisco, Compaq, Dell, IBM, Panasonic, Sony, Toshiba and more. Rentfusion is a leader in providing computer and audiovisual rental services to corporate America, delivering professional services from offices in Chicago, Orlando, Las Vegas, New York and New Jersey.

Our equipment arrive on time and we configured to suit to your requirements. We have vast experience in computer rental services & offers complete customized configuration of all computer equipment.

BENEFITS OF RENTING

1) Availability of all the required equipments 2) Uniquely customized to meet your requirements 3) Trained professionals for maintenance & service 4) Low capital investments 5) Zero maintenance costs 6) Less Hassle

Why rent a computer? Outright purchase of computer equipments for short tem projects is expensive. Renting fulfills your requirement at a fraction of the cost.

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Most companies are confused whether rent or buy computer equipment. Often, clients purchase equipment thinking it will help the company immensely. This is true for some companies but for the most of them renting is the most beneficial alternative. For any temporary purposes renting is the best option. A renting is lower as oppose to capital purchase.

Corporate events Whether you're launching a training program or hosting conference for special purpose rental companies provides services to meet your corporate technological needs.

by Jenish Shah
Keyword : Computer Rental Company