Subnetting

combine the material in this section with a great deal of practice and you will become an absolute subnetting surgeon. The concept of subnetting is simple enough. We’re simply  taking a block of IP addresses and cutting it up into smaller pieces. That’s really all there is to it. For those new tosubnetting, I’ve found […]

This lab is based on real world networking ,where some of the hubs were in major cities but some of the spooks were rural and the networking connections were not always the best. On this occasion we would make a decision to not use a routing protocol over a link to some of those spokes, […]

Time for us to see where load sharing can serve as a benefit as it usually does with RIP. We saw some load balancing going on and we chatted about it a little bit during our auto summarization lab and load balancing wasn’t working in our favor, but that was because auto summarization was left […]

The Dangers of Autosummarization RIP did ok by us in that previous lab, but one thing we did was we turned auto summarization off because I wanted us to concentrate on other things. If we left all of those summarization on, it was going to mess up our routes and I want you to see […]

Intro To Distance Vector Protocols RIP versian2 is a good way to get started with routing logic and going beyond the walkthrough as we did earlier and we will do plenty of debugging we’ll see RIP v2 in action in plenty of lab work here in the section. But first we need to go over […]

There are four different kinds of static routes: “regular” static routes Host static route (“host routes”) Floating static routes )floating on what?) Default static routes This is the network we’re going to use R1 is our hub router, and the IP addresses that are on the serial interface of all three routers belong to the […]

The Domain Name System does something wonderful and transparent for us: It takes the hostname we enter into a web browser – usually a website’s URL – and translate it into the IP address that’s actually needed to make the communication between host and website happen. A DNS Query is sent out asking for a […]

Before we head back to L3 and start work with routing protocols, let’s take a few minutes to go into more details about the going-on at the Transport Layer(OSI Layer4). TCP and UDP get the job done here, but they do so in wildly different styles. TCP: Guarantees delivery of segments. Performs error detection and […]

Auto negotiation Ports, Ports, Ports By default, Cisco Switch ports are set to automatically negotiate port speed and duplex with the connected partner. Basically the port and the connected device have a conversation about the highest level of speed and duplex each can support, and then come to an agreement about the speed and duplex […]