The Codes of ICMP

In today’s post I wanted to talk about the widely used Ping command. Which is one of the best methods (I think) to begin network troubleshooting. When part of the network goes down it is sometimes hard to figure out why? When you issue the ping command or the extended ping command in a Cisco router several […]

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World IPv6 Day!!

So what is IPv6 day? Today major companies like Google, Facebook, Yahoo and ISPs (Internet Service Providers) test their IPv6 deployments. Why is this important? Well if you follow IPv4 news you might already know that IPv4 addresses have been exhausted and the need to move to different address space is critical, if new web services are […]

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Classful vs. Classless Routing

Before the internet and general networking become popular into what it is now, there were and still are routing protocols that only do classful routing. What is classful routing? When I was talking about Dynamic Routing earlier (See the post Dynamic Routing Protocols) I mentioned there was a difference between classful routing and classless routing. So […]

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Configure Static Routing

Plugging Cisco routers together and hoping they work out of the box is not something you should hope for. A router can learn about networks in two ways, manually from configured static routers which we will talk about today and dynamic routing protocols which will talk about on Wednesday. Let’s get started!

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Understanding AAA

The wonderful AAA which in the Cisco world means, Authentication, Authorization, and Accounting but what does that really mean? In today’s post that’s what we are going to be talking about. What is AAA and what are the benefits of using it along with what is it?

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