Frame Relay [rss]

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: Frame

Sometimes, I am amazed at the number of very basic concepts that we simply have not talked about in this series. One of those jumped out at me as I was doing some update work on our wiki . We use the term frame all of the time, but we have never really Read More...

PodSnacks: PVC vs. SVC

We have several packet network technologies that work on the virtual circuit model. These include both frame relay and ATM . In these networks we distinguish between permanent virtual circuits (PVC) and switched virtual circuits (SVC). Today's PodSnack Read More...

PodSnacks: Excess Information Rate

A couple of days ago we talked about the committed information rate (CIR) that is assigned to a frame relay virtual circuit (VC). There is another parameter assigned to the VC: the excess information rate (EIR). This parameter controls the burst tolerance Read More...

PodSnacks: Frame Relay Access Device

We've spent a couple of PodSnacks on frame relay , but we've never really taken a look at the customer end of the frame relay user-to-network interface (UNI). The device that is placed out there is generically referred to as a frame relay access Read More...

PodSnacks: FECN vs. BECN

Staying with the theme of frame relay , today we're going to spend a bit of time on congestion notification and congestion management. Specifically, we're going to look at the notification component, which can be accomplished using the Forward Read More...

PodSnacks: Committed Information Rate

OK - so I got sick of themes for one day! I looked through my little library of PodSnacks and found I had a few on frame relay . Now you might be tempted to say that this is a waste of time because frame relay is a legacy technology or service, but it Read More...

PodSnacks: Virtual Circuit

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...