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PodSnacks: Fibre Channel over Ethernet (FCoE)

In recent days, we've heard about Fibre Channel (FC) and Fibre Channel over IP (FCIP), both of which are technologies related to storage area networks (SAN). Today we look at a third technology in this set, one that has not yet completed the standards Read More...

PodSnacks: Fibre Channel over IP (FCIP)

We recently heard a PodSnack about Fibre Channel (FC), a networking technology commonly found in storage area networks (SAN). As storage has become more and more critical to organizations, many have sought ways to extend their storage capabilities across Read More...

PodSnacks: Fibre Channel (FC)

I do this series in the cracks of my professional life, and sometimes my personal life. Lately there haven't been a lot of cracks so I've been a bit remiss in my postings. But I'll make it up to you, faithful listener. This week the schedule Read More...

PodSnacks: Multiprotocol Label Switching (MPLS)

Well, we've been threatening to do this for a while, so today is MPLS day. Tune in as Michel explains the basic concepts. You can listen to (or download) the PodSnack by clicking here , or you can use the Flash player below. If you have an idea or Read More...

PodSnacks: Network Interface Layer

Today we go back to the world of network models and architectures, and we take a quick look at the lowest layer of the four-layer TCP/IP model: the Network Interface Layer . It's not the most exciting thing we could talk about, but it is, in essence, Read More...

PodSnacks: Cyclic Redundancy Check (CRC)

How do we know when things go bad? In a previous PodSnack we talked about the functions of the Data Link Layer , one of which is to detect bit errors in a transmission. But how is that accomplished? How does the transmitter provide enough information Read More...

PodSnacks: High-level Data Link Control (HDLC)

Have you ever studied languages? If you have, you may have heard reference to the so-called "romance" or "Latin" languages. These are all of the languages that descend from ancient Latin, and include English, French, and Spanish. In Read More...

PodSnacks: Link Aggregation

Today we're going to head back to the world of Ethernet and discuss a concept related to inverse multiplexing : link aggregation . The concept is fairly simple: make two or more Ethernet links between two devices act as one higher-speed link. Still, Read More...

PodSnack: Wi-Fi

Let's shift gears a bit. We've had some PodSnacks about the world of wireless . So let's take a look at a couple of Internet -related wireless technologies. Today, Mark is going to talk to you about Wi-Fi . You can listen to (or download) Read More...

PodSnacks: Cable Modem

Today we spend a little time in the world of the cable television industry, and we look at a piece of equipment you probably have in your home or business if you get voice, Internet , or transport data services from your local cable company . The device Read More...

PodSnacks: The Chained Layers

Back to the OSI Reference Model for a moment. You may sometimes hear reference to the chained_layers . This is a reference to the first three layers of the model, so named because chaining them together creates the fabric of an inter-network. In today's Read More...

PodSnacks: Virtual Circuit (VC)

Packet networks come in two basic flavors: datagram or virtual circuit . Today, Mark is going to walk you through the definition of a virtual circuit, and examples of places where you can find them. You can listen to (or download) the PodSnack by clicking Read More...

PodSnacks: Asynchronous Transfer Mode

A few weeks ago, we looked at Frame Relay. I suppose it makes sense to take a bit of time and explore asynchronous transfer mode (ATM). In today's PodSnack, Mark walks you through the basics. You can listen to (or download) the PodSnack by clicking Read More...

PodSnacks: Virtual LANs (VLAN)

Hill Associates' instructors are famous for defining the word "virtual" as "whatever follows it is a lie." Enter the virtual LAN . Apparently the LAN part is a lie. In today's PodSnack, Michel explains it to you. You can listen Read More...

PodSnacks: Data Over Cable Service Interface Specification (DOCSIS)

The title of our PodSnack for today is a mouthful, but the concept is not so complex. When the cable companies decided to use their video networks to deliver other services, they needed new technology. Specifically, they needed the protocols and equipment Read More...
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