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Cisco Certifications Importance and Guidelines.
Cisco is a Corporation that provides an impressively vast array of certifications for those who are practically and technically minded or for those who wish to specialise in hardware and networking. When going for a Cisco Certificate you should know that there are basically three levels of certification, ranging from Associate to Professional to Expert. ...Read Complete Article
The Importance of CCNP Certifications.
Cisco Certified Network Professional (CCNP) certifies comprehension and expertise require installing, configuring and troubleshooting converged local and wide area networks with 100 to 500 or more nodes. (CCNP) Prerequisite is Cisco Certified Network Associate (CCNA). With these two certifications in your resume you are well on your way to become master in networking. ...Read Complete Article
CCNA Books - 5 Things You Must Know Before You Buy
If you're reading this, I assume that you have decided to go for the most cost-effective (cheapest) way to study for and pass the challenging CCNA exam. This is very possible - I did it - and so have many others. With the hundreds of books available, how do you choose? Below are 5 things you must know before you whip out your credit card and make a purchase: ...Read Complete Article
How Valuable Is A Cisco Certification?
If you were thinking of obtaining a Cisco certification, to give you a pat on the back. You're on your way to make a good decision and execution of a report that indicates the highest level of professionalism in the IT industry. ...Read Complete Article
Cisco Certification Course for Professional Success
If you are an Information Technology professional and want to reach new heights in your career then you should opt for Cisco Certification Course. Cisco certified courses have a huge reputation in the industry and people with Cisco certifications are in huge demand. ...Read Complete Article
The use of "host" and "any" confuses some newcomers
to ACLs, so let's take a look at that first.
It is acceptable to configure a wildcard mask of all ones or all zeroes. A
wildcard mask of 0.0.0.0 means the address specified in the ACL line must be
matched exactly a wildcard mask of 255.255.255.255 means that all addresses
will match the line.
...Read Complete Article
Distance Vector Command Review
Here's a review of some very important distance vector and static routing commands you need to know, along with their proper usage and console output. ...Read Complete
Frame Relay - End to end keepalives
One of the first things you learned about Frame is that the LMI also serves as a keepalive, or a heartbeat - and if three consecutive LMIs are missed, the line protocol goes down. There's a limitation to LMI as a keepalive, though. The LMI is exchanged only between the DTE and the closest DCE. The LMI is therefore a local keepalive that does not reflect any possible issues on the remote end of the virtual circuit. ...Read Complete
Frame Relay DLCIs And Mappings
Passing the CCNA is tough, and one of the toughest parts is keeping all the acronyms straight! Frame Relay has plenty of those, and today we're going to examine what DLCIs do and how they're mapped on a Cisco router. ...Read Complete
To pass your CCNA exam and earn this coveted certification, you must understand the details of port-based authentication. This knowledge has a great deal of value in production networks as well, since this authentication scheme is regularly implemented. Let's take a look at this particular CCNA skill. ...Read Complete
Split Horizon And Hub-and-Spoke Networks
Split horizon exists for a very good reason - routing loop prevention. The rule of split horizon states that a router cannot send an advertisement for a route out the same interface that it came in on. Split horizon is on by default on all interfaces running RIP, IGRP, and EIGRP. ...Read Complete
Variance And Unequal Cost Load Balancing
Using the variance command is the easy part - it's getting the metric that's the hard part with IGRP. With EIGRP, you just look in the topology table and that's it. With IGRP, you've got to run a debug to get the right metric. ...Read Complete
More CCNA and CCNP candidates than ever before are
putting together their own home labs, and there's no better way to learn about
Cisco technologies than working with the real thing. Getting the routers and
switches is just part of putting together a great CCNA / CCNP home lab, though.
You've got to get the right cables to connect the devices, and this is an
important part of your education as well. After all, without the right cables,
client networks are going to have a hard time working!
...Read Complete