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Clustering Solutions and Zero Downtime Hosting Pitfalls
Title: Clustering Solutions and Zero Downtime Hosting Pitfalls Author: Godfrey Heron Email: info@irieisle-online.com Word Count:1452 Copyright: © 2005 by Godfrey Heron Article URL:www.irieisle-online.com/zero-downtime-hosting.htm Publishing...
Exchange Disaster Recovery with SANRAD V-Switch Planning Guide
Introduction
Designing a disaster recovery system requires planning and
consideration of the available options that will best fit your
company's needs, SLA and budget. This guide will help you design
an Exchange Disaster Recovery ...
Firewall Protection - Does Your Firewall Do This?
The first thing people think about when defending their computers and networks is an up-to-date antivirus program. Without this most basic protection, your computer will get a virus, which could just slow it down or potentially bring the pc to a...
How to change, upgrade or remove and IDE hard drive
Hard drives - Hard drives are a little more complicated. First off, you have to know what you want to do with the hard drive. By this, I mean either you want it set to either SLAVE or MASTER. If you want to boot from the hard drive (load windows or...
WiFi Range: What are the Limits?
Because of the fact that the WiFi networking standard uses very
high frequency (2.4 GHz) radio signals to transmit data, its
access range is usually quite limited. How limited, of course,
depends on the type of WiFi hardware being used.
A...
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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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| Computer hardware - Wikipedia, the free encyclopedia |
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| Hardware - Wikipedia, the free encyclopedia |
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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. ... |
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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. |
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| Google Directory - Computers > Hardware |
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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. |
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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 ... |
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| red hat hardware compatibility lists |
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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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