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Build your first computer from hardware scratches
Wow- if you do it first time and have some asset of time in your disposition – then go ahead and purchase motherboard, your favorite processor, memory, video card (probably it is better to purchase it external for advanced quality). You will also...
If You Had Problems in the Past with a Computer Virus, Then You'll Want to Know How Easy it is to Setup Firewall Protection
“If You Had Problems in the Past with a Computer Virus, Then You'll Want to Know How Easy it is to Setup Firewall Protection” By Steven Presar You know the basics of computer virus protection -- don't open email attachments' from senders that you...
Improving SQL Performance
How do you know how much hardware is really needed by your applications? And what do you do when your applications are overloading your system? The answer lies with improving your SQL performance. You have to tune your hardware SQL server and...
Is your Computer Infected with Spyware?
Is your computer running slower than it should be? Do you find that de-fragmentation and extra memory doesn't help? Do you think it could be a virus? What do you do in situations like these? I suppose you'd run your antivirus software. But what...
The Seamless Internet
http://www.enfish.com/ The hype over ubiquitous (or pervasive) computing (computers everywhere) has masked a potentially more momentous development. It is the convergence of computing devices interfaces with web (or other) content. Years ago -...
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Cisco CCNA / CCNP Home Lab: Why You Need An ISDN Simulator
ISDN is a vital topic for today's CCNA and CCNP candidates, especially for the ICND and Intro exams - you've got to know ISDN inside and out to pass those exams. Naturally you want to include it in your home lab.
What many candidates don't realize is that you can't connect two Cisco routers directly via their Basic Rate Interface (BRI) interfaces you've got to have another device between them called an ISDN simulator.
An ISDN simulator is not one of those software programs pretending to be routers ("router simulators") this is a piece of hardware that acts as the telephone company in your home lab. Older simulators come with preprogrammed phone numbers and SPIDs, where newer ones let you program the phone numbers you want to use. Either way, an ISDN simulator is great for your CCNA/CCNP home lab, because you can practice dial scenarios that actually work. And you get to troubleshoot the ones that don't, which is also important to learn!
You don't need any special cables or connectors you just connect both of your routers' BRI interfaces to the ISDN simulator with a straight-through cable and you're ready to go.
In years past, this was a major problem for 640-801, 811, and 821 studies, because the simulators used to be so expensive. New ones can still be pricey ($600 and up), but with the sudden influx
of used ISDN simulators on ebay and Cisco resellers, you can get a used one that will do the job for you.
Why are there suddenly so many ISDN simulators on the market? Cisco recently removed ISDN from the CCIE R&S exam, so a lot of CCIE rack resellers as well as private individuals are selling their simulators. There's never been a better time to add ISDN to your home lab. If taken care of (kept out of extreme heat), they can last for quite a few years. The one I purchased for my IE home lab is still working well.
If you choose to purchase a new simulator, you can run a Google search to find vendors. I've made two purchases from www.vconsole.com over the last few years and both of those simulators have worked beautifully.
As I said earlier, there's never been a better time to add ISDN to your home lab. Don't just settle for trying to memorize theory - get your hands on the real deal, practice and fix your configurations, and you'll be amazed at what you learn and how well you do on your CCNA and CCNP exams!
About the Author
Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage, home of FREE CCNA & CCNP tutorials. For a FREE copy of my latest e-books, "How To Pass The CCNA" or "How To Pass The CCNP", request one at chris@thebryantadvantage.com!
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| Tom's Hardware |
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| HardwareCentral - Your source for in-depth computer hardware info. |
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| Ace Hardware |
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| Computer hardware - Wikipedia, the free encyclopedia |
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| en.wikipedia.org |
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| Hardware - Wikipedia, the free encyclopedia |
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| Open Directory - Computers: Hardware |
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| Microsoft Hardware – Home Page |
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| AnandTech: your source for hardware analysis and news |
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| Supplier of new and refurbished networking hardware and approved and compatible network accessories. Located in the United Kingdom. |
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| Slashdot: News for nerds, stuff that matters |
| From the article: "Although the news caused barely a ripple of reaction in the audience of software and hardware engineers, there are industry analysts who ... |
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| InformationWeek HardwareTech Center |
| Our hardware coverage ranges from mobile computers and PDAs to servers and supercomputers, and the infrastructure issues enterprises deal with every day. ... |
| www.informationweek.com |
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| What is hardware? - A Word Definition From the Webopedia Computer ... |
| This page describes the term hardware and lists other pages on the Web where you can find additional information. |
| www.webopedia.com |
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| Google Directory - Computers > Hardware |
| Hardware Central - http://www.hardwarecentral.com/ Computing-centric community providing vital information, support, tools and interaction facilities for ... |
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| Gifts: Unique Gifts & Gift Ideas at Restoration Hardware |
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| HwB: The Hardware Book |
| HwB provides you with circuits, pinouts, cable/adapter descriptions and other technical information. |
| www.hardwarebook.net |
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| Reg Hardware: Product News and Gadget Reviews from The Register |
| More Gadgets Stuff. 5th December 2006 12:09 GMT. Author: Reg Hardware ... 27th November 2006 15:31 GMT. Author: The Hardware Widow ... |
| www.reghardware.co.uk |
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| red hat hardware compatibility lists |
| hardware.redhat.com/ - Similar pages |
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| TrueValue.com |
| Here's our tip to hang strands of lights with ease. Jeanenne & Jim Tucker Plantation True Value Hardware Richmond, TX ... |
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| A complete illustrated Guide to the PC Hardware |
| A complete illustrated Guide to the PC Hardware, Logic and Architecture. 500 easy-read articles about the modern PC. Understand the basic architecture of ... |
| www.karbosguide.com |
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